WO2018068616A1 - Activated-carbon activation furnace and activated-carbon production method - Google Patents

Activated-carbon activation furnace and activated-carbon production method Download PDF

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Publication number
WO2018068616A1
WO2018068616A1 PCT/CN2017/102562 CN2017102562W WO2018068616A1 WO 2018068616 A1 WO2018068616 A1 WO 2018068616A1 CN 2017102562 W CN2017102562 W CN 2017102562W WO 2018068616 A1 WO2018068616 A1 WO 2018068616A1
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Prior art keywords
passage
furnace body
combustion passage
combustion
activated carbon
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PCT/CN2017/102562
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French (fr)
Chinese (zh)
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张西进
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张西进
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Publication of WO2018068616A1 publication Critical patent/WO2018068616A1/en
Priority to PH12019500765A priority Critical patent/PH12019500765A1/en

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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/30Active carbon
    • C01B32/312Preparation
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/30Active carbon
    • C01B32/39Apparatus for the preparation thereof

Definitions

  • the invention relates to the field of activated carbon production equipment and activated carbon production process, and more particularly to an activated carbon activation furnace and a method for producing activated carbon.
  • the physical method is to first prepare the activated carbon by placing the raw materials (high-quality coal, nut shell, charcoal, etc.) in a closed furnace body, smoldering and carbonizing, and then introducing an appropriate amount of steam to activate.
  • the raw material generally sawdust
  • a chemical agent phosphoric acid, zinc chloride, etc.
  • the production of activated carbon equipment by physical methods in China is generally a traditional vertical activation furnace, an external heat type converter, a liner rotary furnace, an internal heat positive pressure rotary furnace, and an internal heat direct combustion type activation furnace.
  • a heating furnace for an activated carbon production facility the application relates to a heating furnace for an activated carbon production facility, including a heating furnace body, a heating furnace The body comprises a casing, a furnace body axially disposed inside the casing, and an insulation layer disposed between the casing and the outer furnace body, the furnace body comprising an outer furnace body and an inner furnace body, and between the outer furnace body and the inner furnace body
  • the utility model comprises a closed cavity, wherein the cavity is provided with a plurality of heating components, one end of the inner furnace body is a feeding port, and the other end is a discharging port, and the heating furnace body is provided with
  • the setting of the heat insulation layer effectively reduces the heat loss of the heating furnace; the heating material is used to heat the raw material of the activated carbon in the inner furnace body, thereby avoiding problems such as excessive weight of the internal heat type heating furnace and excessive power consumption; and the heating assembly adopts several groups. Several heating components can achieve different temperature control of the heating temperature of the raw materials in the inner furnace body according to actual processing requirements.
  • the production capacity and quality of activated carbon are low: because the furnace body can not be sealed well, the combustible gas which is heated by the material is easy to be directly burned in the area where the material is placed, resulting in a large increase in the amount of carbonized material or activated carbon ablation.
  • the production capacity and quality of activated carbon increase the consumption of raw materials and energy consumption.
  • the existing activation furnace has a limited amount of feed per unit time, and the activated carbon production capacity cannot be further significantly improved, and the added raw materials are always accumulated in the lower part of the activation furnace due to gravity. It is difficult to fully contact with steam, resulting in poor activation and reducing the quality of activated carbon.
  • the invention provides an activated carbon activation furnace and a method for producing activated carbon.
  • the activated carbon activation furnace and the activated carbon production method of the invention can improve the safety of the activated carbon production process to a certain extent and improve the quality of the activated carbon produced.
  • the activated carbon activation furnace of the present invention comprises a furnace body, a material inlet device and a discharge mechanism, wherein the material inlet device is in communication with a feed port of the furnace body, and the discharge mechanism and the discharge of the furnace body
  • the mouth is connected, and the furnace body is provided with a combustion passage communicating with the inside of the furnace body.
  • the combustion passage is filled with air, the inside of the furnace body is in a negative pressure state and the air pressure in the combustion passage is lower than the inside of the furnace body.
  • the combustion passage is arranged along the length direction of the furnace body, the first end of the combustion passage is close to the feed inlet of the furnace body and communicates with the heat exchange mechanism through the pipeline, and the tail of the combustion passage The end is close to the discharge opening of the furnace body and its opening is provided.
  • the furnace body is internally separated by at least two material passages, the material passages are arranged along the length direction of the furnace body, and steam is passed through each material passage.
  • the furnace body comprises an outer cylinder body, and at least two sections of the sub-pillar support members are circumferentially arranged along the inner wall of the outer cylinder and enclose a combustion passage, and the adjacent two sections of the sub-tank support members A material passage is formed between the inner wall of the outer cylinder and the outer wall of the combustion passage.
  • each of the sub-storage support members includes a sub-storage support column and a sub-storage support plate, one end of the sub-storage support column is connected with the inner wall of the outer cylinder, and the sub-pillar support column is further One end is connected with the sub-storage support plate, the sub-storage support plate is a curved plate, and the sub-storage support plate disposed along the circumferential direction encloses a circular combustion passage with a radial cross-section at a central position inside the furnace body.
  • a section of the material passage is defined between two adjacent sub-station support columns, the inner wall of the outer cylinder and the outer wall of the combustion passage in the circumferential direction of the furnace body; a plurality of sub-tank support members are arranged along the length direction of the furnace body to form a sub-storage support Pieces.
  • a sub-female buckle is connected between two sub-station support members adjacent to each other in the circumferential direction of the furnace body and two sub-tank support members adjacent to each other along the longitudinal direction of the furnace body. Together, the joint gap between them is sealed with glue.
  • the end of the combustion passage is connected with a retaining ring, and the inner wall of the retaining ring is fixed to the outer wall of the combustion passage.
  • the first end of the combustion passage is sequentially connected to a steam generator, a dust remover and a chimney through a pipe, and the smoke inlet end or the smoke outlet end of the steam generator is provided with
  • the steam outlet of the steam generator is connected to the steam distribution mechanism through a pipeline
  • the steam distribution mechanism includes a plurality of steam nozzles, and at least one steam nozzle is connected in each material passage;
  • the mechanism includes a plurality of air tubes, the plurality of air tubes are distributed along the length of the combustion passage, and each of the air tubes is correspondingly communicated with the interior of the combustion passage through a branch support.
  • the material feeding device supplies material through a feeding mechanism
  • the discharging mechanism adopts a screw conveyor
  • the outer cylinder is driven to rotate by a transmission device thereon.
  • the first end of the combustion passage is provided with a rotary joint
  • two sides of the bottom of the outer cylinder are respectively provided with a support
  • the outer cylinder adjusts the relative heights of the two supports through the support adjusting device;
  • the inner wall of the outer cylinder is provided with an insulation layer and a refractory layer from the inside to the outside, and the refractory layer is made of a refractory castable;
  • the branch support is made of a composite material of silicon nitride and silicon carbide;
  • Each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with a temperature measuring device at different positions along the length direction, the steam flow valve, the air flow Both the valve and the temperature measuring device are connected to a computer.
  • the activated carbon production method of the invention preheats the rotary activation furnace before the start of the production of the activated carbon, and the activated carbon production comprises the following steps:
  • Step A providing a combustion passage and at least two material passages in the activation furnace, the at least two material passages are disposed around the combustion passage, and the combustion passage and the material passage are connected to the inside of the activation furnace;
  • Step B respectively, the materials are sent into the material passages through the material inlet device, and steam is respectively introduced into the respective material passages, and the materials are discharged after being activated by the discharging mechanism;
  • Step C opening the induced draft fan in communication with the combustion passage, so that the inside of the activation furnace is in a negative pressure state and the air pressure in the combustion passage is lower than that in the activation furnace, so that the evolved gas in each material passage is introduced into the combustion passage after being heated, and is combusted.
  • the air passing through the passage is mixed and burned;
  • Step D heat generated by combustion in the combustion passage, heat radiation, heat conduction to materials in each material passage;
  • Step E passing the flue gas generated by the combustion in the combustion passage into the steam generator, and after the heat exchange, the generated steam is subsequently used, and the remaining flue gas is discharged after being dusted;
  • step B, step C, step D, and step E are repeated until the production of activated carbon is completed.
  • the furnace body is provided with a combustion passage communicating with the inside of the furnace body, and the gas pressure in the combustion passage is lower than the furnace The inside of the body, so that the combustible gas which is thermally precipitated inside the furnace body is directly sucked from the inside of the furnace body into the combustion passage, and is mixed and burned with the air passing through the combustion passage, and on the other hand, the physical production of activated carbon in the furnace body is provided.
  • the gas pressure in the combustion passage is lower than the inside of the furnace body, the gas source from which the material is heated is continuously sucked into the combustion passage or burned or discharged, and the gas flows in one direction from the inside of the furnace body to the combustion passage.
  • the air passing through the combustion passage cannot reach the inside of the furnace body, so the area where the material inside the furnace body is placed is in an oxygen-deficient state, and the combustible gas which is thermally precipitated from the material cannot be directly burned in the area where the material inside the furnace body is placed, thereby avoiding the carbonized material.
  • the activated carbon is ablated, which improves the productivity and quality of the activated carbon, reduces the consumption of raw materials and energy consumption; and since the gas pressure in the combustion passage is lower than the inside of the furnace body, there is no need to worry that the flue gas in the combustion passage breaks into the interior of the furnace body. Contaminant material.
  • the inside of the furnace body is set to a negative pressure state, even if a high-temperature gas detonation phenomenon occurs due to a sudden rise in the gas pressure inside the furnace body, the detonation flame is difficult to escape from the furnace due to the buffering action of the negative pressure state inside the furnace body.
  • the body seal is sprayed and burned, which greatly avoids the safety accident caused by the burning of the furnace body seal.
  • the inside of the furnace body is divided into at least two material passages, and since the material passages are divided into a plurality of materials, the materials fed from the feed inlet of the furnace body are evenly distributed in the respective material passages, each The thickness of the material layer in the material channel is moderate and reasonable, and the activation furnace adopts low-incline rotation.
  • Each material channel is repeatedly rotated up and down, the number of times of material turning in the furnace is increased, the material is turned more fully, and the frequency and time of steam contact with the material. The increase is greatly improved, the optimal activation effect is achieved, and the quality of the activated carbon is improved.
  • the amount of the feed per unit time is greatly increased compared with the past, and the amount of the activated carbon is significantly increased. The capacity of activated carbon.
  • At least two sections of the sub-storage support members are circumferentially disposed along the inner wall of the outer cylinder and enclose a combustion passage, and are supported by the sub-pillar support members to form a combustion passage, and the adjacent two-stage sub-chamber support members and the outer cylinder body
  • the wall and the outer wall of the combustion passage enclose a material passage, and the combustion passage and the material passage surrounded by the above structure are adopted, wherein the combustion passage is supported between the plurality of material passages, and the structural stability is good.
  • each of the sub-storage support members is arranged and composed of a plurality of sub-storage support members along the length direction of the furnace body.
  • the joint gap between the adjacent two sub-tank supports is sealed with glue, clay
  • the activation furnace is used for the first time, it is thermally solidified to provide a good sealing effect.
  • each steam nozzle has a steam flow valve
  • each air tube is provided with an air flow valve
  • the furnace body is provided with a temperature measuring device at different positions along the length direction, and the steam flow valve
  • the air flow valve and the temperature measuring device are all connected with the computer, and the computer intelligent control system is used.
  • the temperature data of each section of the furnace body is adopted.
  • the measurement and control of the body speed and other data realizes the intelligent control management of the whole process of production.
  • the combustion passage is placed at the center of the furnace body, and the material passage is evenly distributed around the combustion passage, which is favorable for uniform radiation heating of each material passage, stabilizes the heating temperature of the material, and improves the activation effect of the material;
  • the high-temperature flue gas after combustion in the channel passes through the steam generated by the steam generator to meet the steam demand in the production process.
  • the entire production process does not require an external heat source, which greatly reduces the energy consumption.
  • the material evolved gas and then passed through the combustion. After heat exchange, dust removal and purification, it solves the pollution problem caused by the evolved gas and meets the green environmental protection standard.
  • FIG. 1 is a schematic structural view of an activated carbon activation furnace of Embodiment 1;
  • Figure 2 is a cross-sectional view showing the structure of the furnace body of Figure 1 in the radial direction;
  • Embodiment 3 is a schematic structural view of a single sub-station support member in Embodiment 2;
  • FIG. 4 is a schematic right side view of the outer cylinder body in the third embodiment
  • Fig. 5 is a flow chart showing a method for producing activated carbon of Example 4.
  • the activated carbon activation furnace of the embodiment includes a furnace body, a material inlet device 13 and a discharge mechanism 15, and the material inlet device 13 communicates with the feed port of the furnace body, and the discharge mechanism 15 and the furnace
  • the discharge port of the body is connected, and the combustion chamber 6 is provided with a combustion passage 6 communicating with the inside of the furnace body.
  • the combustion passage 6 is filled with air, the inside of the furnace body is in a negative pressure state and the air pressure in the combustion passage 6 is lower than the inside of the furnace body.
  • the level and method of the process cannot completely seal the area between the furnace bodies. Therefore, the combustible gas which is thermally precipitated by the material is likely to be directly burned in the area where the material is placed, thereby causing a large increase in the amount of carbonized material or activated carbon ablation, and reducing the activated carbon.
  • the production capacity and quality increase the consumption of raw materials and energy consumption, but in the present embodiment, the above problems are completely avoided, as follows:
  • the furnace body is provided with a combustion passage 6 communicating with the interior of the furnace body (the four walls of the combustion passage 6 divide the combustion passage 6 and the area where the material inside the furnace body are placed into two relatively independent regions), and the combustion passage
  • the gas pressure in the gas is lower than the inside of the furnace body, so that the combustible gas which is thermally precipitated inside the furnace body is directly sucked from the inside of the furnace body into the combustion passage 6, and is mixed with the air passing through the combustion passage 6, and burned.
  • the utility model provides a heat source for the production of activated carbon by the physical method inside the furnace body, specifically, heat radiation and heat transfer generated by combustion in the combustion passage 6 to the material; on the other hand, since the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, the material is thermally precipitated. The gas is continuously sucked into the combustion passage 6 or burned or discharged.
  • the gas flows unidirectionally from the inside of the furnace body to the combustion passage 6, so that the air passing through the combustion passage 6 cannot reach the inside of the furnace body, so the inside of the furnace body
  • the area where the material is placed is in anoxic state, and the combustible gas which is thermally precipitated from the material cannot be directly burned in the area where the material inside the furnace body is placed, avoiding carbonized material or active
  • the charcoal is ablated, which improves the productivity and quality of the activated carbon, reduces the consumption of raw materials and energy consumption; and since the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, there is no need to worry that the flue gas in the combustion passage 6 breaks into the interior of the furnace body. And the pollutants.
  • the change in the amount of gas generated may cause instability of the gas pressure (that is, the carbonization material may be heated unevenly, etc., causing a change in the gas production in the furnace, thereby causing instability of the gas pressure), and the sudden rise of the gas pressure may cause
  • the high-temperature gas deflagration causes safety hazards such as the burning of the furnace body seal.
  • the sealing performance at the rotary joint is relatively poor.
  • the inside of the furnace body is set to a negative pressure state, so even if a high temperature gas detonation phenomenon occurs due to a sudden rise in pressure inside the furnace body, the buffer of the internal negative pressure state of the furnace body is buffered. The flame of the detonation is difficult to be ejected from the seal of the furnace body, which greatly avoids the safety accident caused by the burning of the seal of the furnace body.
  • the combustion passage 6 is disposed along the longitudinal direction of the furnace body, the first end of the combustion passage 6 is close to the feed inlet of the furnace body and communicates with the heat exchange mechanism through the pipeline, and the tail end of the combustion passage 6 is close to the furnace body.
  • the discharge port and its opening are set.
  • the combustion passage 6 is disposed along the longitudinal direction of the furnace body, so that the combustion passage 6 heats the material inside the furnace body along the length direction of the furnace body, thereby improving the heating effect of the material; the first end of the combustion passage 6 passes through the pipeline and The heat exchange mechanism is connected to heat recovery of the high-temperature flue gas after combustion in the combustion passage 6, thereby improving energy utilization efficiency; the first end of the combustion passage 6 extends to the feed port of the furnace body, and the tail end of the combustion passage 6 extends to the furnace The discharge opening of the body, and the opening end of the combustion passage 6 is arranged, so that the combustible gas which is thermally precipitated inside the furnace body is collected in the direction in which the material moves, and then passes into the tail end of the combustion passage 6, which is beneficial to the flammable gas more smoothly. It is burned into the combustion passage 6.
  • the orientation of the first end and the trailing end of the combustion passage 6 can be reversed, and the collection of the combustible gas in the combustion passage 6 can also be achieved; and the head end of the combustion passage 6 can also be
  • the tail ends are respectively connected to the heat exchange mechanism through the pipeline, and cut or dig holes at a certain portion in the middle of the combustion passage 6 to form an opening for extracting the combustible gas, and the collection of the combustible gas in the combustion passage 6 can also be realized.
  • combustion passage 6 communicates with the inside of the furnace body, and the flue gas after combustion inside the combustion passage 6 passes through the heat exchange mechanism to recover heat, if the person skilled in the art is inspired by it,
  • the structural form and the embodiment similar to the technical solution are not creatively designed, and are all within the scope of protection of the present invention.
  • the furnace body is separated by at least two material passages 5, and the material passages 5 are arranged along the length direction of the furnace body, and steam is passed through each of the material passages 5.
  • the existing activation furnace has a limited amount of feed per unit time, so the activated carbon production capacity cannot be further significantly improved, and the added raw materials are always accumulated in the lower part of the activation furnace due to gravity, and it is difficult to fully contact with the steam, resulting in poor activation effect and reduced activated carbon. quality.
  • the inside of the furnace body is divided into at least two material passages 5, and the material passages 5 are arranged along the length direction of the furnace body, and the materials fed from the feed inlet of the furnace body are evenly distributed in the respective material passages 5.
  • the production capacity and quality of activated carbon can be significantly improved. The specific reasons are as follows: There is only one large material passage in the existing activation furnace, and the materials are added according to the specified amount. Although the activation furnace can rotate, a large amount of materials always accumulate due to gravity. In the lower part of the activation furnace, a thicker material layer is formed in the lower part of the activation furnace.
  • the above problem can be improved to some extent, as follows: the interior of the furnace body is divided into at least two material passages 5, and the material passages 5 are divided into a plurality of materials, which are fed from the feed inlet of the furnace body.
  • each material passage 5 The materials are evenly distributed in each material passage 5, and the thickness of the material layer in each material passage 5 is moderate and reasonable, and the activation furnace is rotated at a low inclination, and each material passage 5 is repeatedly rotated up and down, and the number of times the material is turned in the furnace Increase, material turnover The movement is more sufficient, the number and time of contact between the steam and the material is greatly increased, the optimal activation effect is achieved, and the quality of the activated carbon is improved.
  • the feeding amount per unit time is greatly increased compared with the past (because the material channel 5 is divided into a plurality of parts, under the same total feeding amount condition, The mixing of materials and steam is significantly improved, providing conditions for increasing the total amount of feed per unit time; although the feed amount of single material passage 5 is relatively small, the total amount of feed for all material passages 5 is relatively significantly increased), in theory
  • the interior of the furnace body is divided into The 8 material channels 5 have a total amount of feed per unit time of 2 to 3 times, which significantly increases the capacity of activated carbon.
  • the furnace body in the embodiment comprises an outer cylinder 1 which is rolled from a steel plate.
  • the inner wall of the outer cylinder 1 is provided with an insulation layer 2 and a refractory layer 3 from the inside to the outside, and the conventional activation furnace
  • refractory bricks are used as the refractory layer 3, and the refractory bricks will expand under high temperature conditions, and vibration will occur during the rotation of the activation furnace, which easily causes loosening of the refractory bricks and deformation of the furnace body.
  • the refractory layer 3 is made of refractory castable, so that the refractory layer 3 has excellent performances such as high temperature resistance and high strength, thereby improving the reliability and service life of the equipment.
  • the furnace body comprises an outer cylinder body 1, and at least two sections of the sub-chamber support member 4 are circumferentially arranged along the inner wall of the outer cylinder body 1 and enclose a combustion passage 6, two adjacent sections of the sub-chamber support member 4 and the outer cylinder body.
  • a material passage 5 is defined between the inner wall and the outer wall of the combustion passage 6. Referring to FIG. 2, in the present embodiment, the combustion passage 6 and the plurality of material passages 5 are surrounded by a plurality of sub-storage support members 4.
  • At least two sub-storage support members 4 are circumferentially disposed along the inner wall of the outer cylinder 1
  • the combustion passage 6 is supported by the sub-pillar support 4 to form a combustion passage 6, and the adjacent two-stage sub-station support 4, the inner wall of the outer cylinder 1 and the outer wall of the combustion passage 6 enclose a material passage 5, which is surrounded by the above structure.
  • the combustion passage 6 and the material passage 5 are formed, wherein the combustion passage 6 is supported between the plurality of material passages 5, and the structural stability is good.
  • the multi-segment sub-station support member 4 constituting the combustion passage 6 and the material passage 5 can be an integrated structure, which is integrally formed and molded at one time, and is convenient to manufacture.
  • the first end of the combustion passage 6 is connected to the steam generator 10, the dust remover 11 and the chimney 12 through a pipeline, and the air inlet end and or the smoke outlet end of the steam generator 10 are provided with an induced draft fan 9 (specifically, this embodiment)
  • An inlet fan 9 is disposed on the inlet end and the outlet end of the steam generator 10, and the induced draft fan 9 disposed at the inlet end of the steam generator 10 is mainly used to make the inside of the furnace body a negative pressure state and the combustion passage 6
  • the air pressure is lower than the inside of the furnace body, and the induced draft fan 9 disposed at the cigarette end of the steam generator 10 is mainly used for discharging the flue gas after the heat exchange, and the steam outlet of the steam generator 10 is connected to the steam distribution mechanism 7 through the pipeline.
  • the steam distribution mechanism 7 includes a plurality of steam nozzles, and at least one steam nozzle is introduced in each material passage 5; in this embodiment, after combustion in the combustion passage 6
  • the high-temperature flue gas passes through the steam generated by the steam generator 10 to meet the steam demand in the production process, and the entire production process does not require external heat energy, which greatly saves production cost and reduces energy consumption; and the high-temperature flue gas passes through the steam generation.
  • Heat, dust collector emissions purification 11 solve the problem of smoke pollution on the environment, to achieve the environmental protection standards.
  • the air distribution mechanism 8 includes a plurality of An air tube, a plurality of air tubes are distributed along the length of the combustion passage 6, and each air tube is correspondingly communicated with the interior of the combustion passage 6 through a sub-tank support member 4, thereby solving the seal caused by the air tube passing through the rear end of the combustion passage 6. , bending deformation, maintenance difficulties and other issues.
  • the supply of air at different positions in the combustion passage 6 can be controlled to adjust the intensity of the flame in the combustion passage 6, thereby adjusting the temperature distribution in the furnace to better meet the needs of the production process and improve product quality.
  • the material feeding device 13 supplies material through the feeding mechanism 14, the discharging mechanism 15 adopts a screw conveyor, and the outer cylinder 1 is driven to rotate through the transmission device 16 thereon.
  • the first end of the combustion passage 6 is provided with a rotary joint 18, and the outer cylinder
  • the two sides of the bottom of the body 1 are respectively provided with a support, and the relative heights of the two supports are adjusted by the support adjusting device 17.
  • the support near the inlet of the furnace body is higher than the feed away from the furnace body.
  • the support at the mouth and the relative height of the two supports are arranged such that the outer cylinder 1 is inclined as a whole, so that the material is gradually pushed into the discharge mechanism 15 in the outer cylinder 1 with the rotation of the outer cylinder 1.
  • Each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with temperature measuring devices, steam flow valves, air flow valves and temperature measuring at different positions along the length direction.
  • the devices are all connected to a computer.
  • the computer intelligent control system is used to measure and control the temperature data of each section of the furnace body, the quantity of the in-furnace material, the steam flow rate, the air flow rate, and the rotational speed of the outer cylinder body 1 according to different types of materials produced by the activated carbon. The intelligent control management of the whole process of production has been realized.
  • the activated carbon activation furnace of the present embodiment has the same structure as that of Embodiment 1, and further:
  • each of the sub-station support members 4 includes a sub-storage support column 401 and a sub-storage support plate 402.
  • One end of the sub-storage support column 401 is connected to the inner wall of the outer cylinder body 1, and the other end of the sub-storage support column 401 is divided into points.
  • the warehouse support plates 402 are connected, the sub-storage support plates 402 are curved plates, and the sub-storage support plates 402 disposed along the circumferential direction enclose a circular combustion passage 6 in a radial horizontal direction at the inner center position of the furnace body, along the circumferential direction of the furnace body
  • a pair of adjacent sub-storage support columns 401, an inner wall of the outer cylinder 1 and an outer wall of the combustion passage 6 enclose a section of a material passage 5;
  • a plurality of sub-tank support members 4 are arranged along the length of the furnace body and form a section.
  • the warehouse support member 4 specifically, in the embodiment, the length of the combustion passage 6 is set to 12 to 20 meters, the inner diameter is set to 0.4 to 1.0 meters, and the height of the material passage 5 is set to 0.2 to 0.5 meters.
  • the combustion passage 6 is placed at the center of the furnace body, and the material passage 5 is evenly distributed around the combustion passage 6, which is favorable for uniform radiation heating of the material passages 5, stabilizes the heating temperature of the material, and improves the activation effect of the material;
  • the high-temperature flue gas after combustion in 6 is steamed by steam generator 10 to meet the steam demand in the production process.
  • the entire production process does not require an external heat source, which greatly reduces energy consumption.
  • the material evolved gas after combustion Through heat exchange, dust removal and purification, the problem of environmental pollution caused by the evolved gas is solved, and the green environmental protection standard is reached.
  • the inventor Since the metal material has good sealing performance without severe deformation, the inventor initially tends to use the metal material to make the combustion passage 6 or the material passage 5, but in the actual use of the activation furnace, the inside of the furnace body is 900. High temperature around the temperature, after a period of use, almost all metal materials (such as high temperature stainless steel) Both the material channel 5 and the combustion channel 6 have problems such as bending, deformation, cracking, gas leakage, and fracture, which are difficult to meet the needs of use. How to find a high-temperature resistant metal material suitable for the internal use of the activation furnace is a key research topic in the early stage of the inventor, but the inventors did not find a suitable high temperature resistant metal material after investing a lot of manpower and material resources.
  • the sub-storage support member 4 is made of a composite material of silicon nitride and silicon carbide, and has the properties of high temperature resistance, high strength, good toughness, good oxidation resistance and thermal conductivity, and greatly improves the reliability of the device. Service life.
  • each of the sub-storage support members 4 is arranged and arranged along the length direction of the furnace body by a plurality of sub-storage support members 4, and adopts such a modular (fragmented) structure form, and there are adjacent modules.
  • the better deformation buffer can prevent the assembled material passage 5 and the combustion passage 6 from being broken due to deformation, greatly improving the structural stability and reliability of the material passage 5 and the combustion passage 6, and greatly improving the reliability of the equipment. Sex and age.
  • the two sub-station support members 4 adjacent to the circumferential direction of the furnace body are connected by a female snap ring and the joint gap between them is sealed by a glue, and the adjacent two bins can be separated by the sub-female buckle.
  • the support members 4 are relatively fixed together, and even when a relatively severe thermal expansion and contraction occurs, the female snap fasteners can form a certain buffer to prevent the two adjacent split support members 4 from falling off due to stress deformation or
  • the connection gap between the adjacent two sub-station supports 4 is sealed by a glue, and the cement is thermally solidified when the activation furnace is used for the first time, which is a good seal. effect.
  • the structure and assembly method of the above-mentioned sub-female connection and the glue seal seem to be simple, it has been confirmed by the inventors on several occasions that the two cooperate with each other to improve the structural stability of the material passage 5 and the combustion passage 6. And ensure the corresponding sealing of the material passage 5 and the combustion passage 6.
  • the activated carbon activation furnace of the present embodiment is used for the physical production of activated carbon. Therefore, in the process of heat activation of the material in the material passage 5, it is necessary to ensure that the material passage 5 has a good regional sealing performance to avoid materials.
  • the heated precipitation gas directly in the material passage 5 generates a combustion reaction to ablate the carbonized material or the activated carbon, thereby affecting the productivity and quality of the activated carbon.
  • the material passage 5 prepared by using the sub-station support member 4 has good sealing performance, but the distance It is better to meet the requirements of the physical method for producing the activated carbon for the sealing performance of the material passage 5, and there is still room for further improvement.
  • the material passage 5 made by using the plurality of sub-pillar support members 4 in this embodiment must be In combination with the structure in the present embodiment that the inside of the furnace body is in a negative pressure state and the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, because the two cooperate When used, the combustible gas which is heated by the material can be sucked into the combustion passage 6 from the inside of the furnace body, and the air is mixed in the combustion passage 6 to be burned to ensure that the material passage 5 is in an oxygen-deficient state.
  • the air and the flue gas in the combustion passage 6 cannot be mixed into the material passage 5, thereby directly satisfying the extremely high requirement of the physical method for producing the activated carbon for the sealing performance of the material passage 5, thereby ensuring the structural stability of the material passage 5 and the combustion passage 6. Sex, improve equipment life, reduce costs, and ensure the production capacity and quality of activated carbon.
  • the activated carbon activation furnace of the present embodiment has the same structure as that of Embodiment 2, and further:
  • the end of the combustion passage 6 is connected to a retaining ring 19, and the inner wall of the retaining ring 19 is fixed to the outer wall of the combustion passage 6.
  • the material passage 5 located at the upper end of the combustion passage 6 is easy to be used for the gas in the material passage 5 when it is sucked into the combustion passage 6 due to the accumulation of the material at the bottom thereof. It is brought into the combustion passage 6, and by the installation of the retaining ring 19, the material accumulated in the material passage 5 which is rotated to the upper end of the combustion passage 6 can be blocked from being directly dropped into the combustion passage 6.
  • the activated carbon activation furnace in the third embodiment is preheated before the start of activated carbon production, and the activated carbon production includes the following steps:
  • Step A a combustion passage 6 and at least two material passages 5 are disposed in the activation furnace, and the at least two material passages 5 are disposed around the combustion passage 6, and the combustion passage 6 and the material passage 5 are communicated with the activation furnace;
  • Step B The materials are respectively sent into the material passages 5 through the material feeding device 13, and steam is respectively introduced into the respective material passages 5. After the materials are activated, the materials are discharged through the discharging mechanism 15;
  • Step C opening the induced draft fan 9 communicating with the combustion passage 6 so that the inside of the activation furnace is in a negative pressure state and the air pressure in the combustion passage 6 is lower than that in the activation furnace, so that the evolved gas in each material passage 5 is introduced into the combustion passage 6 after being heated. Internally mixed with and combusted with air passing through the combustion passage 6;
  • Step D heat generated by combustion in the combustion passage 6 is thermally radiated and thermally conducted to materials in the respective material passages 5;
  • Step E the flue gas generated by the combustion in the combustion passage 6 is introduced into the steam generator 10, and after the heat exchange, the generated steam is subsequently used, and the remaining flue gas is discharged after being dusted;
  • step B, step C, step D, and step E are repeated until the production of activated carbon is completed.

Abstract

An activated-carbon activation furnace and an activated-carbon production method, which relate to the field of activated-carbon production devices and activated-carbon production technologies. The safety of an activated-carbon production process can be improved to a certain extent, the activation furnace can stably work for a long time, and the quality and the productive capacity of produced activated carbon can be greatly improved. The activated-carbon activation furnace comprises a furnace body, a material entry device (13), and a material discharge mechanism (15). A burning passage (6) communicating with the inside of the furnace body is disposed in the furnace body. Air is introduced in the burning passage (6). The inside of the furnace body is in a negative-pressure state, and the air pressure in the burning passage (6) is lower than that in the furnace body. The activated-carbon production method comprises the following steps: step A, arranging a burning passage (6) and material passages (5); step B, introducing steam into the material passages (5); step C, introducing evolved gas in the material passages (5), into the burning passage (6); step D, heating materials in the material passages (5); and step E, introducing flue gas generated in burning into a steam generator (10) for heat exchange. The activated-carbon activation furnace and the activated-carbon production method are mainly used for activated carbon production.

Description

活性炭活化炉及活性炭生产方法Activated carbon activation furnace and activated carbon production method 技术领域Technical field
本发明涉及活性炭生产设备及活性炭生产工艺领域,更具体地说,涉及一种活性炭活化炉及活性炭生产方法。The invention relates to the field of activated carbon production equipment and activated carbon production process, and more particularly to an activated carbon activation furnace and a method for producing activated carbon.
背景技术Background technique
目前,国内外活性炭生产方法主要分为两大类,即:物理法和化学法。物理法是先把原料(优质煤、果壳、木炭等)放在密闭的炉体中闷烧炭化,再通入适量的水蒸汽活化而制得活性炭。化学法是把原料(一般为锯木屑)先通过化学药剂(磷酸、氯化锌等)浸渍后,在空气流通的炉体中炭化、活化而制得活性炭。目前,较多厂家使用物理法生产活性炭。At present, domestic and foreign activated carbon production methods are mainly divided into two categories, namely: physical methods and chemical methods. The physical method is to first prepare the activated carbon by placing the raw materials (high-quality coal, nut shell, charcoal, etc.) in a closed furnace body, smoldering and carbonizing, and then introducing an appropriate amount of steam to activate. In the chemical method, the raw material (generally sawdust) is first impregnated with a chemical agent (phosphoric acid, zinc chloride, etc.), and then carbonized and activated in a furnace body through which air flows, thereby producing activated carbon. At present, more manufacturers use physical methods to produce activated carbon.
当前,我国物理法生产活性炭设备普遍为传统的立式活化炉、外热型转炉、内胆回转炉、内热正压回转炉、内热直燃型活化炉。具体例如专利公开号:CN 104477905 A,公开日:2015年04月01日,发明创造名称为:活性炭生产设备用加热炉,该申请案涉及活性炭生产设备用加热炉,包括加热炉本体,加热炉本体包括壳体、在壳体内部轴向设置的炉体、设置在壳体与外炉体之间的保温层,炉体包括外炉体和内炉体,外炉体和内炉体之间构成一个封闭的空腔,空腔中设有若干加热组件,内炉体的一端为进料口,另一端为出料口,加热炉本体上设有连通内炉体的排烟管。保温层的设置有效降低加热炉的热损失;通过加热组件对内炉体中的活性炭的原料进行加热,避免了内热式加热炉自重过大,动力消耗过大等问题;加热组件采用若干组,若干加热组件可根据实际的加工要求对内炉体中的原料的加热温度实现不同的温度控制。At present, the production of activated carbon equipment by physical methods in China is generally a traditional vertical activation furnace, an external heat type converter, a liner rotary furnace, an internal heat positive pressure rotary furnace, and an internal heat direct combustion type activation furnace. Specifically, for example, Patent Publication No.: CN 104477905 A, publication date: April 1, 2015, the name of the invention is: a heating furnace for an activated carbon production facility, the application relates to a heating furnace for an activated carbon production facility, including a heating furnace body, a heating furnace The body comprises a casing, a furnace body axially disposed inside the casing, and an insulation layer disposed between the casing and the outer furnace body, the furnace body comprising an outer furnace body and an inner furnace body, and between the outer furnace body and the inner furnace body The utility model comprises a closed cavity, wherein the cavity is provided with a plurality of heating components, one end of the inner furnace body is a feeding port, and the other end is a discharging port, and the heating furnace body is provided with a exhaust pipe connecting the inner furnace body. The setting of the heat insulation layer effectively reduces the heat loss of the heating furnace; the heating material is used to heat the raw material of the activated carbon in the inner furnace body, thereby avoiding problems such as excessive weight of the internal heat type heating furnace and excessive power consumption; and the heating assembly adopts several groups. Several heating components can achieve different temperature control of the heating temperature of the raw materials in the inner furnace body according to actual processing requirements.
但是,现有物理法生产活性炭的活化炉普遍存在着一定的技术缺陷:(1)安全隐患较大:由于炭化料成分不一致受热后,产生气体数量变化会引起气体压力的不稳定,气压的突升会造成高温气体爆燃,引起炉体密封处喷燃等安全隐患,尤其对于回转式的活化炉,其旋转接头处的密封性能相对较差,一旦发生喷燃现象,容易引发安全事故。(2)活性炭产能及品质较低:由于炉体不能很好的区域密封,物料受热析出的可燃气体容易直接在物料放置的区域发生燃烧反应而造成炭化料或者活性炭烧蚀量大大增加,降低了活性炭的产能和品质,增加了原料消耗及能源消耗;同时,现有的活化炉单位时间内加料量有限,活性炭产能无法进一步显著提升,且加入的原料由于重力作用始终堆积在活化炉的下部,难以充分与蒸汽接触,导致活化效果差,降低了活性炭的品质。However, there are certain technical defects in the existing activated furnaces for the production of activated carbon by physical methods: (1) Safety hazards are large: Since the composition of the carbonized materials is inconsistent, the change in the amount of gas will cause instability of the gas pressure, and the pressure of the gas will suddenly The rise will cause high-temperature gas deflagration, causing safety hazards such as burning of the furnace seal. Especially for the rotary activation furnace, the sealing performance at the rotary joint is relatively poor. Once the combustion phenomenon occurs, it is easy to cause a safety accident. (2) The production capacity and quality of activated carbon are low: because the furnace body can not be sealed well, the combustible gas which is heated by the material is easy to be directly burned in the area where the material is placed, resulting in a large increase in the amount of carbonized material or activated carbon ablation. The production capacity and quality of activated carbon increase the consumption of raw materials and energy consumption. At the same time, the existing activation furnace has a limited amount of feed per unit time, and the activated carbon production capacity cannot be further significantly improved, and the added raw materials are always accumulated in the lower part of the activation furnace due to gravity. It is difficult to fully contact with steam, resulting in poor activation and reducing the quality of activated carbon.
综上所述,如何进一步提高活性炭生产过程的安全性、提升其产能和品质,是现有技术 中亟需解决的技术问题。In summary, how to further improve the safety of activated carbon production process, improve its productivity and quality, is the existing technology The technical problems that need to be solved.
发明内容Summary of the invention
1.发明要解决的技术问题1. The technical problem to be solved by the invention
本发明提供了一种活性炭活化炉及活性炭生产方法,采用本发明的活性炭活化炉及活性炭生产方法,能够一定程度提高活性炭生产过程的安全性,提升生产的活性炭品质。The invention provides an activated carbon activation furnace and a method for producing activated carbon. The activated carbon activation furnace and the activated carbon production method of the invention can improve the safety of the activated carbon production process to a certain extent and improve the quality of the activated carbon produced.
2.技术方案2. Technical solutions
为达到上述目的,本发明提供的技术方案为:In order to achieve the above object, the technical solution provided by the present invention is:
本发明的活性炭活化炉,包括炉体、物料入炉装置和出料机构,所述物料入炉装置与所述炉体的进料口连通,所述出料机构与所述炉体的出料口连通,所述炉体内设置有与炉体内部连通的燃烧通道,该燃烧通道内通有空气,炉体内部为负压状态且燃烧通道内的气压低于炉体内部。The activated carbon activation furnace of the present invention comprises a furnace body, a material inlet device and a discharge mechanism, wherein the material inlet device is in communication with a feed port of the furnace body, and the discharge mechanism and the discharge of the furnace body The mouth is connected, and the furnace body is provided with a combustion passage communicating with the inside of the furnace body. The combustion passage is filled with air, the inside of the furnace body is in a negative pressure state and the air pressure in the combustion passage is lower than the inside of the furnace body.
作为本发明的活性炭活化炉更进一步的改进,所述燃烧通道沿炉体的长度方向设置,燃烧通道的首端靠近炉体的进料口且其通过管道与换热机构连通,燃烧通道的尾端靠近炉体的出料口且其开口设置。As a further improvement of the activated carbon activation furnace of the present invention, the combustion passage is arranged along the length direction of the furnace body, the first end of the combustion passage is close to the feed inlet of the furnace body and communicates with the heat exchange mechanism through the pipeline, and the tail of the combustion passage The end is close to the discharge opening of the furnace body and its opening is provided.
作为本发明的活性炭活化炉更进一步的改进,炉体内部分隔有至少两个物料通道,所述物料通道沿炉体的长度方向设置,每个物料通道内通有蒸汽。As a further improvement of the activated carbon activation furnace of the present invention, the furnace body is internally separated by at least two material passages, the material passages are arranged along the length direction of the furnace body, and steam is passed through each material passage.
作为本发明的活性炭活化炉更进一步的改进,所述炉体包括外筒体,至少两段分仓支撑件沿外筒体内壁周向设置并围成燃烧通道,相邻两段分仓支撑件、外筒体内壁以及燃烧通道外壁之间围成一个物料通道。As a further improvement of the activated carbon activation furnace of the present invention, the furnace body comprises an outer cylinder body, and at least two sections of the sub-pillar support members are circumferentially arranged along the inner wall of the outer cylinder and enclose a combustion passage, and the adjacent two sections of the sub-tank support members A material passage is formed between the inner wall of the outer cylinder and the outer wall of the combustion passage.
作为本发明的活性炭活化炉更进一步的改进,每个分仓支撑件包括分仓支撑柱和分仓支撑板,所述分仓支撑柱的一端与外筒体内壁连接,分仓支撑柱的另一端与所述分仓支撑板连接,所述分仓支撑板为弧形板,沿周向设置的分仓支撑板在炉体内部中心位置围成径向横面为圆形的燃烧通道,沿炉体周向相邻的两个分仓支撑柱、外筒体内壁以及燃烧通道外壁之间围成一个物料通道的一截;若干个分仓支撑件沿炉体的长度方向排列并组成一段分仓支撑件。As a further improvement of the activated carbon activation furnace of the present invention, each of the sub-storage support members includes a sub-storage support column and a sub-storage support plate, one end of the sub-storage support column is connected with the inner wall of the outer cylinder, and the sub-pillar support column is further One end is connected with the sub-storage support plate, the sub-storage support plate is a curved plate, and the sub-storage support plate disposed along the circumferential direction encloses a circular combustion passage with a radial cross-section at a central position inside the furnace body. A section of the material passage is defined between two adjacent sub-station support columns, the inner wall of the outer cylinder and the outer wall of the combustion passage in the circumferential direction of the furnace body; a plurality of sub-tank support members are arranged along the length direction of the furnace body to form a sub-storage support Pieces.
作为本发明的活性炭活化炉更进一步的改进,沿炉体周向相邻的两个分仓支撑件之间、沿炉体长度方向相邻的两个分仓支撑件之间均采用子母扣连接在一起且其之间的连接缝隙均采用胶泥密封。As a further improvement of the activated carbon activation furnace of the present invention, a sub-female buckle is connected between two sub-station support members adjacent to each other in the circumferential direction of the furnace body and two sub-tank support members adjacent to each other along the longitudinal direction of the furnace body. Together, the joint gap between them is sealed with glue.
作为本发明的活性炭活化炉更进一步的改进,所述燃烧通道的尾端连接有一挡料环,该挡料环的内壁固定在燃烧通道的外壁上。 As a further improvement of the activated carbon activation furnace of the present invention, the end of the combustion passage is connected with a retaining ring, and the inner wall of the retaining ring is fixed to the outer wall of the combustion passage.
作为本发明的活性炭活化炉更进一步的改进,所述燃烧通道的首端通过管道依次与蒸汽发生器、除尘器、烟囱连通,所述蒸汽发生器的进烟端和或出烟端上设置有引风机,所述蒸汽发生器的排蒸汽口通过管道与蒸汽配入机构连通,该蒸汽配入机构包括多支蒸汽喷管,每个物料通道内至少通入一支蒸汽喷管;空气配入机构包括多支空气管,多支空气管沿燃烧通道的长度方向分布且每支空气管对应穿过一个分仓支撑件与燃烧通道内部连通。As a further improvement of the activated carbon activation furnace of the present invention, the first end of the combustion passage is sequentially connected to a steam generator, a dust remover and a chimney through a pipe, and the smoke inlet end or the smoke outlet end of the steam generator is provided with In the induced draft fan, the steam outlet of the steam generator is connected to the steam distribution mechanism through a pipeline, the steam distribution mechanism includes a plurality of steam nozzles, and at least one steam nozzle is connected in each material passage; The mechanism includes a plurality of air tubes, the plurality of air tubes are distributed along the length of the combustion passage, and each of the air tubes is correspondingly communicated with the interior of the combustion passage through a branch support.
作为本发明的活性炭活化炉更进一步的改进,所述物料入炉装置通过上料机构供应物料,所述出料机构采用螺旋输送机,所述外筒体通过其上的传动装置驱动旋转,所述燃烧通道的首端安装有旋转接头,外筒体底部的两侧分别设有一个支座,外筒体通过支座调整装置调整两个支座的相对高度;As a further improvement of the activated carbon activation furnace of the present invention, the material feeding device supplies material through a feeding mechanism, and the discharging mechanism adopts a screw conveyor, and the outer cylinder is driven to rotate by a transmission device thereon. The first end of the combustion passage is provided with a rotary joint, and two sides of the bottom of the outer cylinder are respectively provided with a support, and the outer cylinder adjusts the relative heights of the two supports through the support adjusting device;
所述外筒体的内壁上由内向外依次设置有保温层和耐火层,所述耐火层采用耐火浇注料制作;所述分仓支撑件由氮化硅结合碳化硅的复合材料制造;The inner wall of the outer cylinder is provided with an insulation layer and a refractory layer from the inside to the outside, and the refractory layer is made of a refractory castable; the branch support is made of a composite material of silicon nitride and silicon carbide;
每支蒸汽喷管上均设有蒸汽流量阀,每支空气管上均设有空气流量阀,炉体沿长度方向的不同位置处设有测温装置,所述蒸汽流量阀、所述空气流量阀和所述测温装置均与计算机连接。Each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with a temperature measuring device at different positions along the length direction, the steam flow valve, the air flow Both the valve and the temperature measuring device are connected to a computer.
本发明的活性炭生产方法,活性炭生产开始前预热好回转式的活化炉,活性炭生产时包括以下步骤:The activated carbon production method of the invention preheats the rotary activation furnace before the start of the production of the activated carbon, and the activated carbon production comprises the following steps:
步骤A:在活化炉内设置一个燃烧通道和至少两个物料通道,所述至少两个物料通道围绕设置在所述燃烧通道周围,所述燃烧通道和所述物料通道均与活化炉内连通;Step A: providing a combustion passage and at least two material passages in the activation furnace, the at least two material passages are disposed around the combustion passage, and the combustion passage and the material passage are connected to the inside of the activation furnace;
步骤B:通过物料入炉装置分别将物料送入各个物料通道内,向各个物料通道内分别通入蒸汽,物料活化后经出料机构出料;Step B: respectively, the materials are sent into the material passages through the material inlet device, and steam is respectively introduced into the respective material passages, and the materials are discharged after being activated by the discharging mechanism;
步骤C:开启与燃烧通道连通的引风机,使得活化炉内为负压状态且燃烧通道内的气压低于活化炉内,从而将各个物料通道内受热后析出气体引入燃烧通道内,并与燃烧通道内通入的空气混合、燃烧;Step C: opening the induced draft fan in communication with the combustion passage, so that the inside of the activation furnace is in a negative pressure state and the air pressure in the combustion passage is lower than that in the activation furnace, so that the evolved gas in each material passage is introduced into the combustion passage after being heated, and is combusted. The air passing through the passage is mixed and burned;
步骤D:燃烧通道内燃烧产生的热量热辐射、热传导至各个物料通道内的物料;Step D: heat generated by combustion in the combustion passage, heat radiation, heat conduction to materials in each material passage;
步骤E:将燃烧通道内燃烧产生的烟气通入蒸汽发生器,经过换热,所产生的蒸汽后续使用,剩余烟气除尘后排出;Step E: passing the flue gas generated by the combustion in the combustion passage into the steam generator, and after the heat exchange, the generated steam is subsequently used, and the remaining flue gas is discharged after being dusted;
以此往复,重复步骤B、步骤C、步骤D、步骤E,直至活性炭生产完成。With this reciprocation, step B, step C, step D, and step E are repeated until the production of activated carbon is completed.
3.有益效果3. Beneficial effects
采用本发明提供的技术方案,与现有技术相比,具有如下显著有益效果:Compared with the prior art, the technical solution provided by the invention has the following significant beneficial effects:
(1)本发明中,炉体内设置有与炉体内部连通的燃烧通道,且燃烧通道内的气压低于炉 体内部,从而使得炉体内部物料受热析出的可燃气体直接从炉体内部被吸到燃烧通道内,并与燃烧通道内通入的空气混合、燃烧,一方面为炉体内部物理法生产活性炭提供热源;另一方面,由于燃烧通道内的气压低于炉体内部,物料受热析出的气体源源不断地被吸入燃烧通道内或燃烧或排走,气体是从炉体内部向燃烧通道内单向流动,从而燃烧通道内通入的空气无法到达炉体内部,因此炉体内部物料放置的区域处于缺氧状态,物料受热析出的可燃气体则无法直接在炉体内部物料放置的区域燃烧,避免炭化料或者活性炭被烧蚀,提高了活性炭的产能及品质,减少了原料消耗及能源消耗;且由于燃烧通道内的气压低于炉体内部,完全不用担心燃烧通道内的烟气窜入炉体内部而污染物料。(1) In the present invention, the furnace body is provided with a combustion passage communicating with the inside of the furnace body, and the gas pressure in the combustion passage is lower than the furnace The inside of the body, so that the combustible gas which is thermally precipitated inside the furnace body is directly sucked from the inside of the furnace body into the combustion passage, and is mixed and burned with the air passing through the combustion passage, and on the other hand, the physical production of activated carbon in the furnace body is provided. On the other hand, since the gas pressure in the combustion passage is lower than the inside of the furnace body, the gas source from which the material is heated is continuously sucked into the combustion passage or burned or discharged, and the gas flows in one direction from the inside of the furnace body to the combustion passage. Therefore, the air passing through the combustion passage cannot reach the inside of the furnace body, so the area where the material inside the furnace body is placed is in an oxygen-deficient state, and the combustible gas which is thermally precipitated from the material cannot be directly burned in the area where the material inside the furnace body is placed, thereby avoiding the carbonized material. Or the activated carbon is ablated, which improves the productivity and quality of the activated carbon, reduces the consumption of raw materials and energy consumption; and since the gas pressure in the combustion passage is lower than the inside of the furnace body, there is no need to worry that the flue gas in the combustion passage breaks into the interior of the furnace body. Contaminant material.
(2)本发明中,设置炉体内部为负压状态,因此即使炉体内部发生气压突升而造成的高温气体爆燃现象,由于炉体内部负压状态的缓冲作用,爆燃的火焰难以从炉体密封处喷出燃烧,大大避免了炉体密封处的喷燃而引发的安全事故。(2) In the present invention, since the inside of the furnace body is set to a negative pressure state, even if a high-temperature gas detonation phenomenon occurs due to a sudden rise in the gas pressure inside the furnace body, the detonation flame is difficult to escape from the furnace due to the buffering action of the negative pressure state inside the furnace body. The body seal is sprayed and burned, which greatly avoids the safety accident caused by the burning of the furnace body seal.
(3)本发明中,将炉体内部分隔为至少两个物料通道,由于将物料通道分隔为多个,自炉体的进料口送入的物料被均匀地分配在各个物料通道内,每个物料通道内的料层厚度适中合理,同时活化炉采用低斜度转动,每个物料通道分别上下反复旋转,物料在炉内翻动次数增多,物料翻动更加充分,蒸汽与物料接触的次数和时间大大增加,达到最佳活化效果,提高了活性炭的品质;同时,物料通道分隔为多个后,在确保活性炭品质的前提下,单位时间内的加料量相比于过去大大增加理,显著增加了活性炭的产能。(3) In the present invention, the inside of the furnace body is divided into at least two material passages, and since the material passages are divided into a plurality of materials, the materials fed from the feed inlet of the furnace body are evenly distributed in the respective material passages, each The thickness of the material layer in the material channel is moderate and reasonable, and the activation furnace adopts low-incline rotation. Each material channel is repeatedly rotated up and down, the number of times of material turning in the furnace is increased, the material is turned more fully, and the frequency and time of steam contact with the material. The increase is greatly improved, the optimal activation effect is achieved, and the quality of the activated carbon is improved. At the same time, after the material passage is divided into a plurality of materials, the amount of the feed per unit time is greatly increased compared with the past, and the amount of the activated carbon is significantly increased. The capacity of activated carbon.
(4)本发明中,至少两段分仓支撑件沿外筒体内壁周向设置并围成燃烧通道,通过分仓支撑件支撑形成燃烧通道,相邻两段分仓支撑件、外筒体内壁以及燃烧通道外壁之间围成一个物料通道,采用上述结构围成的燃烧通道及物料通道,其中燃烧通道被支撑在多个物料通道之间,结构稳定性较好。(4) In the present invention, at least two sections of the sub-storage support members are circumferentially disposed along the inner wall of the outer cylinder and enclose a combustion passage, and are supported by the sub-pillar support members to form a combustion passage, and the adjacent two-stage sub-chamber support members and the outer cylinder body The wall and the outer wall of the combustion passage enclose a material passage, and the combustion passage and the material passage surrounded by the above structure are adopted, wherein the combustion passage is supported between the plurality of material passages, and the structural stability is good.
(5)本发明中,每一段分仓支撑件均由若干个分仓支撑件沿炉体的长度方向排列并组成,采用这种模块化的结构形式,相邻模块间有较好的形变缓冲,能够最大限度地防止组装的物料通道和燃烧通道因发生变形而断裂,大大提高了物料通道和燃烧通道的结构稳定性和可靠性,大大提高了设备的可靠性和使用年限。(5) In the present invention, each of the sub-storage support members is arranged and composed of a plurality of sub-storage support members along the length direction of the furnace body. With this modular structure, there is better deformation buffer between adjacent modules. It can prevent the material passage and the combustion passage of the assembly from being broken due to deformation, greatly improve the structural stability and reliability of the material passage and the combustion passage, and greatly improve the reliability and service life of the equipment.
(6)本发明中,沿炉体周向相邻的两个分仓支撑件之间、沿炉体长度方向相邻的两个分仓支撑件之间均采用子母扣连接在一起且其之间的连接缝隙均采用胶泥密封,通过子母扣能够将相邻两个分仓支撑件相对的固定在一起,且即使在发生较剧烈的热胀冷缩时,子母扣也能形成一定的缓冲,避免相邻两个分仓支撑件之间因应力变形发生脱落或断裂;为了确保物料通道和燃烧通道的相对密封性,相邻两个分仓支撑件之间的连接缝隙采用胶泥密封,胶泥在活化炉初次使用时即受热凝固,起到良好的密封作用。 (6) In the present invention, between the two sub-chamber support members adjacent to each other in the circumferential direction of the furnace body and the two sub-tank support members adjacent to each other along the longitudinal direction of the furnace body are connected by a female snap and between The joint gaps are sealed by glue, and the two adjacent silo support members can be fixedly fixed together by the female snap fastener, and even when a relatively severe thermal expansion and contraction occurs, the female snap fastener can form a certain buffer. To prevent the two adjacent sub-storage supports from falling off or breaking due to stress deformation; in order to ensure the relative sealing of the material passage and the combustion passage, the joint gap between the adjacent two sub-tank supports is sealed with glue, clay When the activation furnace is used for the first time, it is thermally solidified to provide a good sealing effect.
(7)本发明中,每支蒸汽喷管上均设有蒸汽流量阀,每支空气管上均设有空气流量阀,炉身沿长度方向的不同位置处设有测温装置,蒸汽流量阀、空气流量阀和测温装置均与计算机连接,使用计算机智能控制***,根据活性炭生产物料品种的不同,通过对炉体各段温度数据、入炉物料的数量、蒸汽流量、空气流量、外筒体转速等数据的测控,实现了生产全过程的智能化控制管理。(7) In the present invention, each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with a temperature measuring device at different positions along the length direction, and the steam flow valve The air flow valve and the temperature measuring device are all connected with the computer, and the computer intelligent control system is used. According to the different types of materials produced by the activated carbon, the temperature data of each section of the furnace body, the quantity of the incoming materials, the steam flow rate, the air flow rate, and the outer cylinder are adopted. The measurement and control of the body speed and other data realizes the intelligent control management of the whole process of production.
(8)本发明中,燃烧通道放置在炉体中心位置,物料通道均匀分布在燃烧通道四周,有利于对各个物料通道均匀辐射加热,稳定了物料的受热温度,提高了物料的活化效果;燃烧通道内燃烧后的高温烟气经过蒸汽发生器换热产生的蒸汽满足了生产过程中对于蒸汽的需求,整个生产过程不需要外部热源,大大降低了能源消耗;同时物料析出气体经燃烧后再通过换热、除尘净化后排放,解决了析出的气体对环境造成的污染问题,达到了绿色环保标准。(8) In the present invention, the combustion passage is placed at the center of the furnace body, and the material passage is evenly distributed around the combustion passage, which is favorable for uniform radiation heating of each material passage, stabilizes the heating temperature of the material, and improves the activation effect of the material; The high-temperature flue gas after combustion in the channel passes through the steam generated by the steam generator to meet the steam demand in the production process. The entire production process does not require an external heat source, which greatly reduces the energy consumption. At the same time, the material evolved gas and then passed through the combustion. After heat exchange, dust removal and purification, it solves the pollution problem caused by the evolved gas and meets the green environmental protection standard.
附图说明DRAWINGS
为了更清楚地说明本发明实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,应当理解,以下附图仅示出了本发明的某些实施例,因此不应被看作是对范围的限定,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.
图1为实施例1的活性炭活化炉的结构示意图;1 is a schematic structural view of an activated carbon activation furnace of Embodiment 1;
图2为图1中炉体沿径向的剖视结构示意图;Figure 2 is a cross-sectional view showing the structure of the furnace body of Figure 1 in the radial direction;
图3为实施例2中单个分仓支撑件的结构示意图;3 is a schematic structural view of a single sub-station support member in Embodiment 2;
图4为实施例3中外筒体的右视结构示意图;4 is a schematic right side view of the outer cylinder body in the third embodiment;
图5为实施例4的活性炭生产方法的流程图。Fig. 5 is a flow chart showing a method for producing activated carbon of Example 4.
示意图中的标号说明:The label description in the schematic diagram:
1、外筒体;2、保温层;3、耐火层;4、分仓支撑件;401、分仓支撑柱;402、分仓支撑板;5、物料通道;6、燃烧通道;7、蒸汽配入机构;8、空气配入机构;9、引风机;10、蒸汽发生器;11、除尘器;12、烟囱;13、物料入炉装置;14、上料机构;15、出料机构;16、传动装置;17、支座调整装置;18、旋转接头;19、挡料环。1, outer cylinder; 2, insulation layer; 3, refractory layer; 4, sub-storage support; 401, sub-storage support column; 402, sub-storage support plate; 5, material passage; 6, combustion passage; Distribution mechanism; 8, air distribution mechanism; 9, induced draft fan; 10, steam generator; 11, dust collector; 12, chimney; 13, material into the furnace; 14, loading mechanism; 15, discharge mechanism; 16. Transmission device; 17, support adjustment device; 18, rotary joint; 19, retaining ring.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。因此,以下对在附图中提供的本发明的实施例的详细 描述并非旨在限制要求保护的本发明的范围,而是仅仅表示本发明的选定实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. Accordingly, the following details of embodiments of the invention provided in the accompanying drawings The description is not intended to limit the scope of the invention as claimed, but merely to represent selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
为进一步了解本发明的内容,结合附图和实施例对本发明作详细描述。In order to further understand the present invention, the present invention will be described in detail with reference to the accompanying drawings.
实施例1Example 1
参考图1和图2,本实施例的活性炭活化炉,包括炉体、物料入炉装置13和出料机构15,物料入炉装置13与炉体的进料口连通,出料机构15与炉体的出料口连通,炉体内设置有与炉体内部连通的燃烧通道6,该燃烧通道6内通有空气,炉体内部为负压状态且燃烧通道6内的气压低于炉体内部。Referring to FIG. 1 and FIG. 2, the activated carbon activation furnace of the embodiment includes a furnace body, a material inlet device 13 and a discharge mechanism 15, and the material inlet device 13 communicates with the feed port of the furnace body, and the discharge mechanism 15 and the furnace The discharge port of the body is connected, and the combustion chamber 6 is provided with a combustion passage 6 communicating with the inside of the furnace body. The combustion passage 6 is filled with air, the inside of the furnace body is in a negative pressure state and the air pressure in the combustion passage 6 is lower than the inside of the furnace body.
当前的工艺水平和方法,炉体内区域间无法做到完全相对密封,因此物料受热析出的可燃气体容易直接在物料放置的区域发生燃烧反应而造成炭化料或者活性炭烧蚀量大大增加,降低了活性炭的产能及品质,增加了原料消耗及能源消耗,而本实施例中则完全避免了上述问题,具体如下:At present, the level and method of the process cannot completely seal the area between the furnace bodies. Therefore, the combustible gas which is thermally precipitated by the material is likely to be directly burned in the area where the material is placed, thereby causing a large increase in the amount of carbonized material or activated carbon ablation, and reducing the activated carbon. The production capacity and quality increase the consumption of raw materials and energy consumption, but in the present embodiment, the above problems are completely avoided, as follows:
本实施例中,炉体内设置有与炉体内部连通的燃烧通道6(燃烧通道6的四壁将燃烧通道6与炉体内部物料放置的区域分割成相对独立的两个区域),且燃烧通道6内的气压低于炉体内部,从而使得炉体内部物料受热析出的可燃气体直接从炉体内部被吸到燃烧通道6内,并与燃烧通道6内通入的空气混合、燃烧,一方面为炉体内部物理法生产活性炭提供热源,具体为将燃烧通道6内燃烧产生的热量热辐射、热传导给物料;另一方面,由于燃烧通道6内的气压低于炉体内部,物料受热析出的气体源源不断地被吸入燃烧通道6内或燃烧或排走,气体是从炉体内部向燃烧通道6内单向流动,从而燃烧通道6内通入的空气无法到达炉体内部,因此炉体内部物料放置的区域处于缺氧状态,物料受热析出的可燃气体则无法直接在炉体内部物料放置的区域燃烧,避免炭化料或者活性炭被烧蚀,提高了活性炭的产能及品质,减少了原料消耗及能源消耗;且由于燃烧通道6内的气压低于炉体内部,完全不用担心燃烧通道6内的烟气窜入炉体内部而污染物料。In this embodiment, the furnace body is provided with a combustion passage 6 communicating with the interior of the furnace body (the four walls of the combustion passage 6 divide the combustion passage 6 and the area where the material inside the furnace body are placed into two relatively independent regions), and the combustion passage The gas pressure in the gas is lower than the inside of the furnace body, so that the combustible gas which is thermally precipitated inside the furnace body is directly sucked from the inside of the furnace body into the combustion passage 6, and is mixed with the air passing through the combustion passage 6, and burned. The utility model provides a heat source for the production of activated carbon by the physical method inside the furnace body, specifically, heat radiation and heat transfer generated by combustion in the combustion passage 6 to the material; on the other hand, since the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, the material is thermally precipitated. The gas is continuously sucked into the combustion passage 6 or burned or discharged. The gas flows unidirectionally from the inside of the furnace body to the combustion passage 6, so that the air passing through the combustion passage 6 cannot reach the inside of the furnace body, so the inside of the furnace body The area where the material is placed is in anoxic state, and the combustible gas which is thermally precipitated from the material cannot be directly burned in the area where the material inside the furnace body is placed, avoiding carbonized material or active The charcoal is ablated, which improves the productivity and quality of the activated carbon, reduces the consumption of raw materials and energy consumption; and since the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, there is no need to worry that the flue gas in the combustion passage 6 breaks into the interior of the furnace body. And the pollutants.
由于炭化料成分不一致受热后,产生气体数量变化会引起气体压力的不稳定(即炭化料受热不均匀等原因会引起炉内产气量变化,从而造成气压的不稳定),气压的突升会造成高温气体爆燃,引起炉体密封处喷燃等安全隐患,尤其对于回转式的加热炉,其旋转接头处的密封性能相对较差,一旦发生喷燃现象,容易引发安全事故,而本实施例中则完全避免了上述问题,具体如下:本实施例中,设置炉体内部为负压状态,因此即使炉体内部发生气压突升而造成的高温气体爆燃现象,由于炉体内部负压状态的缓冲作用,爆燃的火焰难以从炉体密封处喷出燃烧,大大避免了炉体密封处的喷燃而引发的安全事故。 Since the composition of the carbonized material is inconsistent and heated, the change in the amount of gas generated may cause instability of the gas pressure (that is, the carbonization material may be heated unevenly, etc., causing a change in the gas production in the furnace, thereby causing instability of the gas pressure), and the sudden rise of the gas pressure may cause The high-temperature gas deflagration causes safety hazards such as the burning of the furnace body seal. Especially for the rotary type heating furnace, the sealing performance at the rotary joint is relatively poor. Once the burning phenomenon occurs, it is easy to cause a safety accident, but in this embodiment, The above problem is completely avoided, as follows: In the present embodiment, the inside of the furnace body is set to a negative pressure state, so even if a high temperature gas detonation phenomenon occurs due to a sudden rise in pressure inside the furnace body, the buffer of the internal negative pressure state of the furnace body is buffered. The flame of the detonation is difficult to be ejected from the seal of the furnace body, which greatly avoids the safety accident caused by the burning of the seal of the furnace body.
优选的,本实施例中燃烧通道6沿炉体的长度方向设置,燃烧通道6的首端靠近炉体的进料口且其通过管道与换热机构连通,燃烧通道6的尾端靠近炉体的出料口且其开口设置。Preferably, in this embodiment, the combustion passage 6 is disposed along the longitudinal direction of the furnace body, the first end of the combustion passage 6 is close to the feed inlet of the furnace body and communicates with the heat exchange mechanism through the pipeline, and the tail end of the combustion passage 6 is close to the furnace body. The discharge port and its opening are set.
本实施例中,燃烧通道6沿炉体的长度方向设置,使得燃烧通道6沿着炉体的长度方向加热炉体内部的物料,提高了物料的加热效果;燃烧通道6的首端通过管道与换热机构连通,可以对燃烧通道6内燃烧后的高温烟气进行热回收,提高能源利用效率;燃烧通道6的首端延伸至炉体的进料口,燃烧通道6的尾端延伸至炉体的出料口,且燃烧通道6的尾端开口设置,使得炉体内部物料受热析出的可燃气体顺着物料移动的方向汇集后通入燃烧通道6的尾端,有利于可燃气体更加顺畅地通入燃烧通道6内燃烧。In this embodiment, the combustion passage 6 is disposed along the longitudinal direction of the furnace body, so that the combustion passage 6 heats the material inside the furnace body along the length direction of the furnace body, thereby improving the heating effect of the material; the first end of the combustion passage 6 passes through the pipeline and The heat exchange mechanism is connected to heat recovery of the high-temperature flue gas after combustion in the combustion passage 6, thereby improving energy utilization efficiency; the first end of the combustion passage 6 extends to the feed port of the furnace body, and the tail end of the combustion passage 6 extends to the furnace The discharge opening of the body, and the opening end of the combustion passage 6 is arranged, so that the combustible gas which is thermally precipitated inside the furnace body is collected in the direction in which the material moves, and then passes into the tail end of the combustion passage 6, which is beneficial to the flammable gas more smoothly. It is burned into the combustion passage 6.
需要指出的是,本实施例中还可以将燃烧通道6的首端和尾端所在的方位进行对调,同样可以实现可燃气体在燃烧通道6内的收集;还可以将燃烧通道6的首端、尾端均分别通过管道与换热机构连通,在燃烧通道6的中部某处截断或挖孔,形成用于抽取可燃气体的开口,同样可以实现可燃气体在燃烧通道6内的收集。上述技术方案的宗旨是,燃烧通道6与炉体内部相连通,且燃烧通道6内部燃烧后的烟气通入换热机构内回收热量,如果本领域的普通技术人员受其启示,在不脱离此处发明创造宗旨的情况下,不经创造性的设计出与该技术方案相似的结构方式及实施例,均应属于本发明的保护范围。It should be noted that, in this embodiment, the orientation of the first end and the trailing end of the combustion passage 6 can be reversed, and the collection of the combustible gas in the combustion passage 6 can also be achieved; and the head end of the combustion passage 6 can also be The tail ends are respectively connected to the heat exchange mechanism through the pipeline, and cut or dig holes at a certain portion in the middle of the combustion passage 6 to form an opening for extracting the combustible gas, and the collection of the combustible gas in the combustion passage 6 can also be realized. The purpose of the above technical solution is that the combustion passage 6 communicates with the inside of the furnace body, and the flue gas after combustion inside the combustion passage 6 passes through the heat exchange mechanism to recover heat, if the person skilled in the art is inspired by it, In the case of the inventive concept herein, the structural form and the embodiment similar to the technical solution are not creatively designed, and are all within the scope of protection of the present invention.
优选的,本实施例中炉体内部分隔有至少两个物料通道5,物料通道5沿炉体的长度方向设置,每个物料通道5内通有蒸汽。Preferably, in the embodiment, the furnace body is separated by at least two material passages 5, and the material passages 5 are arranged along the length direction of the furnace body, and steam is passed through each of the material passages 5.
现有的活化炉单位时间内加料量有限,因此活性炭产能无法进一步显著提升,且加入的原料由于重力作用始终堆积在活化炉的下部,难以充分与蒸汽接触,导致活化效果差,降低了活性炭的品质。The existing activation furnace has a limited amount of feed per unit time, so the activated carbon production capacity cannot be further significantly improved, and the added raw materials are always accumulated in the lower part of the activation furnace due to gravity, and it is difficult to fully contact with the steam, resulting in poor activation effect and reduced activated carbon. quality.
本实施例中,将炉体内部分隔为至少两个物料通道5,物料通道5沿炉体的长度方向设置,自炉体的进料口送入的物料被均匀地分配在各个物料通道5内,可以显著提升活性炭的产能及品质,具体原因分析如下:现有的活化炉内仅有一个大的物料通道,物料按照规定量加入其中,虽然活化炉可以转动,但是由于重力作用大量物料始终堆积在活化炉的下部,活化炉下部形成较厚的物料层,一方面难以充分翻转开来从而与蒸汽充分接触,活化效果差,降低了活性炭的品质;另一方面,所有的物料在重力作用下堆积在活化炉的下部,具有一定的厚度,较厚的物料层内部难以与蒸汽充分接触,物料层内部的物料活化效果明显较差,导致活性炭的品质参差不齐。而本实施例中则可以一定程度上改善上述问题,具体如下:将炉体内部分隔为至少两个物料通道5,由于将物料通道5分隔为多个,自炉体的进料口送入的物料被均匀地分配在各个物料通道5内,每个物料通道5内的料层厚度适中合理,同时活化炉采用低斜度转动,每个物料通道5分别上下反复旋转,物料在炉内翻动次数增多,物料翻 动更加充分,蒸汽与物料接触的次数和时间大大增加,达到最佳活化效果,提高了活性炭的品质。同时,物料通道5分隔为多个后,在确保活性炭品质的前提下,单位时间内的加料量相比于过去大大增加(因为物料通道5被分隔为多个后,相同总加料量条件下,物料与蒸汽的混合情况得到显著提升,为增加单位时间内的加料总量提供条件;虽然单个物料通道5的加料量相对较少,但所有物料通道5的加料总量相对显著提升),理论上,物料通道5被分隔的越多越好,但是考虑制造和生产工艺实际情况,本实施例中炉体内部被分隔为3~12个物料通道,具体本实施例中,炉体内部被分隔为8个物料通道5,其单位时间内的加料总量是过去的2~3倍,显著增加了活性炭的产能。In this embodiment, the inside of the furnace body is divided into at least two material passages 5, and the material passages 5 are arranged along the length direction of the furnace body, and the materials fed from the feed inlet of the furnace body are evenly distributed in the respective material passages 5. The production capacity and quality of activated carbon can be significantly improved. The specific reasons are as follows: There is only one large material passage in the existing activation furnace, and the materials are added according to the specified amount. Although the activation furnace can rotate, a large amount of materials always accumulate due to gravity. In the lower part of the activation furnace, a thicker material layer is formed in the lower part of the activation furnace. On the one hand, it is difficult to fully flip over to fully contact with steam, the activation effect is poor, and the quality of the activated carbon is lowered; on the other hand, all materials are under gravity It is deposited in the lower part of the activation furnace and has a certain thickness. The inside of the thick material layer is difficult to fully contact with the steam, and the material activation effect inside the material layer is obviously poor, resulting in the quality of the activated carbon being uneven. In the present embodiment, the above problem can be improved to some extent, as follows: the interior of the furnace body is divided into at least two material passages 5, and the material passages 5 are divided into a plurality of materials, which are fed from the feed inlet of the furnace body. The materials are evenly distributed in each material passage 5, and the thickness of the material layer in each material passage 5 is moderate and reasonable, and the activation furnace is rotated at a low inclination, and each material passage 5 is repeatedly rotated up and down, and the number of times the material is turned in the furnace Increase, material turnover The movement is more sufficient, the number and time of contact between the steam and the material is greatly increased, the optimal activation effect is achieved, and the quality of the activated carbon is improved. At the same time, after the material channel 5 is divided into a plurality of parts, under the premise of ensuring the quality of the activated carbon, the feeding amount per unit time is greatly increased compared with the past (because the material channel 5 is divided into a plurality of parts, under the same total feeding amount condition, The mixing of materials and steam is significantly improved, providing conditions for increasing the total amount of feed per unit time; although the feed amount of single material passage 5 is relatively small, the total amount of feed for all material passages 5 is relatively significantly increased), in theory The more the material channel 5 is separated, the better, but considering the actual conditions of the manufacturing and production process, the inside of the furnace body is divided into 3 to 12 material passages in this embodiment. In this embodiment, the interior of the furnace body is divided into The 8 material channels 5 have a total amount of feed per unit time of 2 to 3 times, which significantly increases the capacity of activated carbon.
优选的,本实施例中炉体包括外筒体1,外筒体1由钢板卷制而成,外筒体1的内壁上由内向外依次设置有保温层2和耐火层3,传统活化炉普遍采用耐火砖作为耐火层3,在高温状态下耐火砖会产生膨胀,活化炉转动中会产生振动,容易造成耐火砖松动脱落,炉体变形等。本实施例中,耐火层3采用耐火浇注料制作,使得耐火层3为一个整体具备耐高温、强度大等优良性能,提高了设备的可靠性和使用寿命。Preferably, the furnace body in the embodiment comprises an outer cylinder 1 which is rolled from a steel plate. The inner wall of the outer cylinder 1 is provided with an insulation layer 2 and a refractory layer 3 from the inside to the outside, and the conventional activation furnace Generally, refractory bricks are used as the refractory layer 3, and the refractory bricks will expand under high temperature conditions, and vibration will occur during the rotation of the activation furnace, which easily causes loosening of the refractory bricks and deformation of the furnace body. In the embodiment, the refractory layer 3 is made of refractory castable, so that the refractory layer 3 has excellent performances such as high temperature resistance and high strength, thereby improving the reliability and service life of the equipment.
本实施例中,炉体包括外筒体1,至少两段分仓支撑件4沿外筒体1内壁周向设置并围成燃烧通道6,相邻两段分仓支撑件4、外筒体1内壁以及燃烧通道6外壁之间围成一个物料通道5。参考图2,本实施例中,燃烧通道6及多个物料通道5依靠多段分仓支撑件4围成,具体的,至少两段分仓支撑件4沿外筒体1内壁周向设置并围成燃烧通道6,通过分仓支撑件4支撑形成燃烧通道6,相邻两段分仓支撑件4、外筒体1内壁以及燃烧通道6外壁之间围成一个物料通道5,采用上述结构围成的燃烧通道6及物料通道5,其中燃烧通道6被支撑在多个物料通道5之间,结构稳定性较好。本实施例中,构成燃烧通道6和物料通道5的多段分仓支撑件4可以为一体结构,一次整体制造成型,制作方便。In this embodiment, the furnace body comprises an outer cylinder body 1, and at least two sections of the sub-chamber support member 4 are circumferentially arranged along the inner wall of the outer cylinder body 1 and enclose a combustion passage 6, two adjacent sections of the sub-chamber support member 4 and the outer cylinder body. A material passage 5 is defined between the inner wall and the outer wall of the combustion passage 6. Referring to FIG. 2, in the present embodiment, the combustion passage 6 and the plurality of material passages 5 are surrounded by a plurality of sub-storage support members 4. Specifically, at least two sub-storage support members 4 are circumferentially disposed along the inner wall of the outer cylinder 1 The combustion passage 6 is supported by the sub-pillar support 4 to form a combustion passage 6, and the adjacent two-stage sub-station support 4, the inner wall of the outer cylinder 1 and the outer wall of the combustion passage 6 enclose a material passage 5, which is surrounded by the above structure. The combustion passage 6 and the material passage 5 are formed, wherein the combustion passage 6 is supported between the plurality of material passages 5, and the structural stability is good. In this embodiment, the multi-segment sub-station support member 4 constituting the combustion passage 6 and the material passage 5 can be an integrated structure, which is integrally formed and molded at one time, and is convenient to manufacture.
优选的,燃烧通道6的首端通过管道依次与蒸汽发生器10、除尘器11、烟囱12连通,蒸汽发生器10的进烟端和或出烟端上设置有引风机9(具体本实施例中,蒸汽发生器10的进烟端和出烟端上分别设置有引风机9,蒸汽发生器10进烟端设置的引风机9主要用于使得炉体内部为负压状态且燃烧通道6内的气压低于炉体内部,蒸汽发生器10出烟端设置的引风机9主要用于将换热后的烟气排出),蒸汽发生器10的排蒸汽口通过管道与蒸汽配入机构7连通,为物料通道5内的物料提供蒸汽,该蒸汽配入机构7包括多支蒸汽喷管,每个物料通道5内至少通入一支蒸汽喷管;本实施例中,燃烧通道6内燃烧后的高温烟气经过蒸汽发生器10换热产生的蒸汽,满足了生产过程中蒸汽需求,整个生产过程不需要外部热能源,大大节约了生产成本,降低了能源消耗;且高温烟气经过蒸汽发生器10换热、除尘器11净化后排放,解决了烟气对环境造成的污染问题,达到了绿色环保标准。空气配入机构8包括多支 空气管,多支空气管沿燃烧通道6的长度方向分布且每支空气管对应穿过一个分仓支撑件4与燃烧通道6内部连通,解决了空气管由燃烧通道6尾部通入造成的密封、弯曲变形、维修困难等问题。其中,可以控制燃烧通道6内不同位置处空气的供给量来调节燃烧通道6内火焰的强度,从而调节炉内的温度分布,以更好的满足生产工艺的需求,提高产品品质。Preferably, the first end of the combustion passage 6 is connected to the steam generator 10, the dust remover 11 and the chimney 12 through a pipeline, and the air inlet end and or the smoke outlet end of the steam generator 10 are provided with an induced draft fan 9 (specifically, this embodiment) An inlet fan 9 is disposed on the inlet end and the outlet end of the steam generator 10, and the induced draft fan 9 disposed at the inlet end of the steam generator 10 is mainly used to make the inside of the furnace body a negative pressure state and the combustion passage 6 The air pressure is lower than the inside of the furnace body, and the induced draft fan 9 disposed at the cigarette end of the steam generator 10 is mainly used for discharging the flue gas after the heat exchange, and the steam outlet of the steam generator 10 is connected to the steam distribution mechanism 7 through the pipeline. Providing steam for the material in the material passage 5, the steam distribution mechanism 7 includes a plurality of steam nozzles, and at least one steam nozzle is introduced in each material passage 5; in this embodiment, after combustion in the combustion passage 6 The high-temperature flue gas passes through the steam generated by the steam generator 10 to meet the steam demand in the production process, and the entire production process does not require external heat energy, which greatly saves production cost and reduces energy consumption; and the high-temperature flue gas passes through the steam generation. 10 Heat, dust collector emissions purification 11, solve the problem of smoke pollution on the environment, to achieve the environmental protection standards. The air distribution mechanism 8 includes a plurality of An air tube, a plurality of air tubes are distributed along the length of the combustion passage 6, and each air tube is correspondingly communicated with the interior of the combustion passage 6 through a sub-tank support member 4, thereby solving the seal caused by the air tube passing through the rear end of the combustion passage 6. , bending deformation, maintenance difficulties and other issues. Among them, the supply of air at different positions in the combustion passage 6 can be controlled to adjust the intensity of the flame in the combustion passage 6, thereby adjusting the temperature distribution in the furnace to better meet the needs of the production process and improve product quality.
物料入炉装置13通过上料机构14供应物料,出料机构15采用螺旋输送机,外筒体1通过其上的传动装置16驱动旋转,燃烧通道6的首端安装有旋转接头18,外筒体1底部的两侧分别设有一个支座,通过支座调整装置17调整两个支座的相对高度,本实施例中,靠近炉体进料口处的支座高于远离炉体进料口处的支座,两个支座的相对高度设置使得外筒体1整体倾斜,实现了物料在外筒体1内随外筒体1的旋转而慢慢向出料机构15推进的目的。The material feeding device 13 supplies material through the feeding mechanism 14, the discharging mechanism 15 adopts a screw conveyor, and the outer cylinder 1 is driven to rotate through the transmission device 16 thereon. The first end of the combustion passage 6 is provided with a rotary joint 18, and the outer cylinder The two sides of the bottom of the body 1 are respectively provided with a support, and the relative heights of the two supports are adjusted by the support adjusting device 17. In this embodiment, the support near the inlet of the furnace body is higher than the feed away from the furnace body. The support at the mouth and the relative height of the two supports are arranged such that the outer cylinder 1 is inclined as a whole, so that the material is gradually pushed into the discharge mechanism 15 in the outer cylinder 1 with the rotation of the outer cylinder 1.
每支蒸汽喷管上均设有蒸汽流量阀,每支空气管上均设有空气流量阀,炉身沿长度方向的不同位置处设有测温装置,蒸汽流量阀、空气流量阀和测温装置均与计算机连接。本实施例中,使用计算机智能控制***,根据活性炭生产物料品种的不同,通过对炉体各段温度数据、入炉物料的数量、蒸汽流量、空气流量、外筒体1转速等数据的测控,实现了生产全过程的智能化控制管理。Each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with temperature measuring devices, steam flow valves, air flow valves and temperature measuring at different positions along the length direction. The devices are all connected to a computer. In this embodiment, the computer intelligent control system is used to measure and control the temperature data of each section of the furnace body, the quantity of the in-furnace material, the steam flow rate, the air flow rate, and the rotational speed of the outer cylinder body 1 according to different types of materials produced by the activated carbon. The intelligent control management of the whole process of production has been realized.
实施例2Example 2
参考图3,本实施例的活性炭活化炉,其结构与实施例1基本相同,更进一步的:Referring to FIG. 3, the activated carbon activation furnace of the present embodiment has the same structure as that of Embodiment 1, and further:
本实施例中,每个分仓支撑件4包括分仓支撑柱401和分仓支撑板402,分仓支撑柱401的一端与外筒体1内壁连接,分仓支撑柱401的另一端与分仓支撑板402连接,分仓支撑板402为弧形板,沿周向设置的分仓支撑板402在炉体内部中心位置围成径向横面为圆形的燃烧通道6,沿炉体周向相邻的两个分仓支撑柱401、外筒体1内壁以及燃烧通道6外壁之间围成一个物料通道5的一截;若干个分仓支撑件4沿炉体的长度方向排列并组成一段分仓支撑件4;具体本实施例中,该燃烧通道6长度设置为12~20米,内径设置为0.4~1.0米,物料通道5高度设置为0.2~0.5米。其中,燃烧通道6放置在炉体中心位置,物料通道5均匀分布在燃烧通道6四周,有利于对各个物料通道5均匀辐射加热,稳定了物料的受热温度,提高了物料的活化效果;燃烧通道6内燃烧后的高温烟气经过蒸汽发生器10换热产生的蒸汽满足了生产过程中对于蒸汽的需求,整个生产过程不需要外部热源,大大降低了能源消耗;同时物料析出气体经燃烧后再通过换热、除尘净化后排放,解决了析出的气体对环境造成的污染问题,达到了绿色环保标准。In this embodiment, each of the sub-station support members 4 includes a sub-storage support column 401 and a sub-storage support plate 402. One end of the sub-storage support column 401 is connected to the inner wall of the outer cylinder body 1, and the other end of the sub-storage support column 401 is divided into points. The warehouse support plates 402 are connected, the sub-storage support plates 402 are curved plates, and the sub-storage support plates 402 disposed along the circumferential direction enclose a circular combustion passage 6 in a radial horizontal direction at the inner center position of the furnace body, along the circumferential direction of the furnace body A pair of adjacent sub-storage support columns 401, an inner wall of the outer cylinder 1 and an outer wall of the combustion passage 6 enclose a section of a material passage 5; a plurality of sub-tank support members 4 are arranged along the length of the furnace body and form a section. The warehouse support member 4; specifically, in the embodiment, the length of the combustion passage 6 is set to 12 to 20 meters, the inner diameter is set to 0.4 to 1.0 meters, and the height of the material passage 5 is set to 0.2 to 0.5 meters. Wherein, the combustion passage 6 is placed at the center of the furnace body, and the material passage 5 is evenly distributed around the combustion passage 6, which is favorable for uniform radiation heating of the material passages 5, stabilizes the heating temperature of the material, and improves the activation effect of the material; The high-temperature flue gas after combustion in 6 is steamed by steam generator 10 to meet the steam demand in the production process. The entire production process does not require an external heat source, which greatly reduces energy consumption. At the same time, the material evolved gas after combustion. Through heat exchange, dust removal and purification, the problem of environmental pollution caused by the evolved gas is solved, and the green environmental protection standard is reached.
由于金属材料在不发生严重变形下,具有较好的密封性能,因此发明人一开始倾向于采用金属材料制作燃烧通道6或物料通道5,但是,活化炉实际使用过程中,炉体内部处于900度左右较高的温度,经过一段时间的使用后,几乎所有金属材料(例如耐高温不锈钢)制作 的物料通道5和燃烧通道6都出现了弯曲、变形、开裂、漏气、断裂等问题,难以满足使用需求。如何找到一种适合活化炉内部使用的耐高温金属材料,是发明人初期阶段重点研究的课题,但是发明人投入大量人力物力后,均未找到合适的耐高温金属材料。总结之前的失败经验,发明人发现,现有的活性炭活化炉体积巨大,采用金属材料制作的物料通道5和燃烧通道6,一方面由于轴向和径向尺寸相对较大,在活化炉内部受到强烈的热胀冷缩效应后,金属材料本身的变形、开裂甚至断裂等问题在当前材料科学水平下根本无法避免,且活化炉中旋转接头处的轴向和径向尺寸精度要求更严,采用金属材料制作的物料通道5和燃烧通道6基于当前的技术水平,难以实现。Since the metal material has good sealing performance without severe deformation, the inventor initially tends to use the metal material to make the combustion passage 6 or the material passage 5, but in the actual use of the activation furnace, the inside of the furnace body is 900. High temperature around the temperature, after a period of use, almost all metal materials (such as high temperature stainless steel) Both the material channel 5 and the combustion channel 6 have problems such as bending, deformation, cracking, gas leakage, and fracture, which are difficult to meet the needs of use. How to find a high-temperature resistant metal material suitable for the internal use of the activation furnace is a key research topic in the early stage of the inventor, but the inventors did not find a suitable high temperature resistant metal material after investing a lot of manpower and material resources. Summarizing the previous failure experience, the inventors found that the existing activated carbon activation furnace is huge in volume, and the material passage 5 and the combustion passage 6 made of metal materials are subjected to the inside of the activation furnace due to the relatively large axial and radial dimensions. After the strong thermal expansion and contraction effect, the deformation, cracking and even fracture of the metal material itself cannot be avoided at the current material science level, and the axial and radial dimensional accuracy of the rotary joint in the activation furnace is more strict. Material passages 5 and combustion passages 6 made of metal materials are difficult to achieve based on current state of the art.
发明人经过实验发现,分仓支撑件4由氮化硅结合碳化硅的复合材料制造,具备耐高温、强度大、韧性好、抗氧化与导热性能好等性能,大大提高了设备的可靠性和使用寿命。且本实施例中,每一段分仓支撑件4均由若干个分仓支撑件4沿炉体的长度方向排列并组成,采用这种模块化(碎片化)的结构形式,相邻模块间有较好的形变缓冲,能够最大限度地防止组装的物料通道5和燃烧通道6因发生变形而断裂,大大提高了物料通道5和燃烧通道6的结构稳定性和可靠性,大大提高了设备的可靠性和使用年限。The inventor discovered through experiments that the sub-storage support member 4 is made of a composite material of silicon nitride and silicon carbide, and has the properties of high temperature resistance, high strength, good toughness, good oxidation resistance and thermal conductivity, and greatly improves the reliability of the device. Service life. In this embodiment, each of the sub-storage support members 4 is arranged and arranged along the length direction of the furnace body by a plurality of sub-storage support members 4, and adopts such a modular (fragmented) structure form, and there are adjacent modules. The better deformation buffer can prevent the assembled material passage 5 and the combustion passage 6 from being broken due to deformation, greatly improving the structural stability and reliability of the material passage 5 and the combustion passage 6, and greatly improving the reliability of the equipment. Sex and age.
优选的,为了确保组装的物料通道5和燃烧通道6既具有较高的结构强度,又具有较好的密封性能,本实施例中,沿炉体周向相邻的两个分仓支撑件4之间、沿炉体长度方向相邻的两个分仓支撑件4之间均采用子母扣连接在一起且其之间的连接缝隙均采用胶泥密封,通过子母扣能够将相邻两个分仓支撑件4相对的固定在一起,且即使在发生较剧烈的热胀冷缩时,子母扣也能形成一定的缓冲,避免相邻两个分仓支撑件4之间因应力变形发生脱落或断裂;为了确保物料通道5和燃烧通道6的相对密封性,相邻两个分仓支撑件4之间的连接缝隙采用胶泥密封,胶泥在活化炉初次使用时即受热凝固,起到良好的密封作用。需要强调的是,上述子母扣连接和胶泥密封虽然结构和组装方法看似简单,但经发明人现场多次实验证实,二者相互配合,既提高了物料通道5和燃烧通道6的结构稳定性,又确保物料通道5和燃烧通道6相应的密封性。Preferably, in order to ensure that the assembled material passage 5 and the combustion passage 6 have both high structural strength and good sealing performance, in this embodiment, between the two sub-station support members 4 adjacent to the circumferential direction of the furnace body The two sub-tank support members 4 adjacent to the length of the furnace body are connected by a female snap ring and the joint gap between them is sealed by a glue, and the adjacent two bins can be separated by the sub-female buckle. The support members 4 are relatively fixed together, and even when a relatively severe thermal expansion and contraction occurs, the female snap fasteners can form a certain buffer to prevent the two adjacent split support members 4 from falling off due to stress deformation or In order to ensure the relative sealing of the material passage 5 and the combustion passage 6, the connection gap between the adjacent two sub-station supports 4 is sealed by a glue, and the cement is thermally solidified when the activation furnace is used for the first time, which is a good seal. effect. It should be emphasized that although the structure and assembly method of the above-mentioned sub-female connection and the glue seal seem to be simple, it has been confirmed by the inventors on several occasions that the two cooperate with each other to improve the structural stability of the material passage 5 and the combustion passage 6. And ensure the corresponding sealing of the material passage 5 and the combustion passage 6.
需要说明的是,本实施例的活性炭活化炉是用于物理法生产活性炭的,因此,物料在物料通道5内受热活化等过程中,需要确保物料通道5具有很好的区域密封性能,以免物料受热析出气体直接在物料通道5内发生燃烧反应而烧蚀炭化料或者活性炭,从而影响活性炭的产能及品质,上述采用分仓支撑件4制作的物料通道5,虽然已经密封性能较好,但是距离更好满足物理法生产活性炭对于物料通道5密封性能的要求,还有进一步提高的余地,此时需要强调的是,本实施例中采用多个分仓支撑件4制作的物料通道5,一定要与本实施例中炉体内部为负压状态且燃烧通道6内的气压低于炉体内部的结构相配合使用,因为二者配合 使用,就能使得物料受热析出的可燃气体时刻从炉体内部被吸入到燃烧通道6内,在燃烧通道6内配入空气后燃烧,确保物料通道5内处于缺氧状态。同时,燃烧通道6内的空气和烟气无法混入物料通道5内,从而直接满足了物理法生产活性炭对于物料通道5密封性能的极高要求,既确保了物料通道5和燃烧通道6的结构稳定性,提高设备使用寿命,降低成本,又确保了活性炭的产能及品质。It should be noted that the activated carbon activation furnace of the present embodiment is used for the physical production of activated carbon. Therefore, in the process of heat activation of the material in the material passage 5, it is necessary to ensure that the material passage 5 has a good regional sealing performance to avoid materials. The heated precipitation gas directly in the material passage 5 generates a combustion reaction to ablate the carbonized material or the activated carbon, thereby affecting the productivity and quality of the activated carbon. The material passage 5 prepared by using the sub-station support member 4 has good sealing performance, but the distance It is better to meet the requirements of the physical method for producing the activated carbon for the sealing performance of the material passage 5, and there is still room for further improvement. At this time, it should be emphasized that the material passage 5 made by using the plurality of sub-pillar support members 4 in this embodiment must be In combination with the structure in the present embodiment that the inside of the furnace body is in a negative pressure state and the gas pressure in the combustion passage 6 is lower than the inside of the furnace body, because the two cooperate When used, the combustible gas which is heated by the material can be sucked into the combustion passage 6 from the inside of the furnace body, and the air is mixed in the combustion passage 6 to be burned to ensure that the material passage 5 is in an oxygen-deficient state. At the same time, the air and the flue gas in the combustion passage 6 cannot be mixed into the material passage 5, thereby directly satisfying the extremely high requirement of the physical method for producing the activated carbon for the sealing performance of the material passage 5, thereby ensuring the structural stability of the material passage 5 and the combustion passage 6. Sex, improve equipment life, reduce costs, and ensure the production capacity and quality of activated carbon.
实施例3Example 3
参考图4,本实施例的活性炭活化炉,其结构与实施例2基本相同,更进一步的:Referring to FIG. 4, the activated carbon activation furnace of the present embodiment has the same structure as that of Embodiment 2, and further:
本实施例中,燃烧通道6的尾端连接有一挡料环19,该挡料环19的内壁固定在燃烧通道6的外壁上。外筒体1旋转过程中,位于燃烧通道6尾端上部的物料通道5,由于物料堆积在其底部,该物料通道5内的气体在被抽吸进入燃烧通道6时,容易将其中的物料颗粒带进燃烧通道6内,通过挡料环19的安装,能够将旋转至燃烧通道6尾端上部的物料通道5其内堆积的物料阻挡住,避免其直接落下被吹入燃烧通道6内。In the present embodiment, the end of the combustion passage 6 is connected to a retaining ring 19, and the inner wall of the retaining ring 19 is fixed to the outer wall of the combustion passage 6. During the rotation of the outer cylinder 1, the material passage 5 located at the upper end of the combustion passage 6 is easy to be used for the gas in the material passage 5 when it is sucked into the combustion passage 6 due to the accumulation of the material at the bottom thereof. It is brought into the combustion passage 6, and by the installation of the retaining ring 19, the material accumulated in the material passage 5 which is rotated to the upper end of the combustion passage 6 can be blocked from being directly dropped into the combustion passage 6.
实施例4Example 4
参考图5,本实施例的活性炭生产方法,活性炭生产开始前预热好实施例3中的活性炭活化炉,活性炭生产时包括以下步骤:Referring to FIG. 5, in the activated carbon production method of the present embodiment, the activated carbon activation furnace in the third embodiment is preheated before the start of activated carbon production, and the activated carbon production includes the following steps:
步骤A:在活化炉内设置一个燃烧通道6和至少两个物料通道5,上述至少两个物料通道5围绕设置在燃烧通道6周围,燃烧通道6和物料通道5均与活化炉内连通;Step A: a combustion passage 6 and at least two material passages 5 are disposed in the activation furnace, and the at least two material passages 5 are disposed around the combustion passage 6, and the combustion passage 6 and the material passage 5 are communicated with the activation furnace;
步骤B:通过物料入炉装置13分别将物料送入各个物料通道5内,向各个物料通道5内分别通入蒸汽,物料活化后经出料机构15出料;Step B: The materials are respectively sent into the material passages 5 through the material feeding device 13, and steam is respectively introduced into the respective material passages 5. After the materials are activated, the materials are discharged through the discharging mechanism 15;
步骤C:开启与燃烧通道6连通的引风机9,使得活化炉内为负压状态且燃烧通道6内的气压低于活化炉内,从而将各个物料通道5内受热后析出气体引入燃烧通道6内,并与燃烧通道6内通入的空气混合、燃烧;Step C: opening the induced draft fan 9 communicating with the combustion passage 6 so that the inside of the activation furnace is in a negative pressure state and the air pressure in the combustion passage 6 is lower than that in the activation furnace, so that the evolved gas in each material passage 5 is introduced into the combustion passage 6 after being heated. Internally mixed with and combusted with air passing through the combustion passage 6;
步骤D:燃烧通道6内燃烧产生的热量热辐射、热传导至各个物料通道5内的物料;Step D: heat generated by combustion in the combustion passage 6 is thermally radiated and thermally conducted to materials in the respective material passages 5;
步骤E:将燃烧通道6内燃烧产生的烟气通入蒸汽发生器10,经过换热,所产生的蒸汽后续使用,剩余烟气除尘后排出;Step E: the flue gas generated by the combustion in the combustion passage 6 is introduced into the steam generator 10, and after the heat exchange, the generated steam is subsequently used, and the remaining flue gas is discharged after being dusted;
以此往复,重复步骤B、步骤C、步骤D、步骤E,直至活性炭生产完成。With this reciprocation, step B, step C, step D, and step E are repeated until the production of activated carbon is completed.
以上示意性的对本发明及其实施方式进行了描述,该描述没有限制性,附图中所示的也只是本发明的实施方式之一,实际的结构并不局限于此。所以,如果本领域的普通技术人员受其启示,在不脱离本发明创造宗旨的情况下,不经创造性的设计出与该技术方案相似的结构方式及实施例,均应属于本发明的保护范围。 The invention and its embodiments have been described above schematically, and the description is not limited thereto, and only one embodiment of the present invention is shown in the drawings, and the actual structure is not limited thereto. Therefore, if the person skilled in the art is inspired by the invention, the structural manners and embodiments similar to the technical solution are not creatively designed, and should belong to the protection scope of the present invention. .

Claims (10)

  1. 一种活性炭活化炉,包括炉体、物料入炉装置(13)和出料机构(15),所述物料入炉装置(13)与所述炉体的进料口连通,所述出料机构(15)与所述炉体的出料口连通,其特征在于:所述炉体内设置有与炉体内部连通的燃烧通道(6),该燃烧通道(6)内通有空气,炉体内部为负压状态且燃烧通道(6)内的气压低于炉体内部。An activated carbon activation furnace comprises a furnace body, a material inlet device (13) and a discharge mechanism (15), and the material inlet device (13) is in communication with a feed port of the furnace body, the discharge mechanism (15) communicating with the discharge port of the furnace body, wherein the furnace body is provided with a combustion passage (6) communicating with the interior of the furnace body, and the combustion passage (6) is filled with air, and the inside of the furnace body It is in a negative pressure state and the air pressure in the combustion passage (6) is lower than the inside of the furnace body.
  2. 根据权利要求1所述的活性炭活化炉,其特征在于:所述燃烧通道(6)沿炉体的长度方向设置,燃烧通道(6)的首端靠近炉体的进料口且其通过管道与换热机构连通,燃烧通道(6)的尾端靠近炉体的出料口且其开口设置。The activated carbon activation furnace according to claim 1, wherein the combustion passage (6) is disposed along the length of the furnace body, and the first end of the combustion passage (6) is close to the inlet of the furnace body and passes through the pipeline The heat exchange mechanism is connected, and the tail end of the combustion passage (6) is close to the discharge port of the furnace body and its opening is arranged.
  3. 根据权利要求2所述的活性炭活化炉,其特征在于:炉体内部分隔有至少两个物料通道(5),所述物料通道(5)沿炉体的长度方向设置,每个物料通道(5)内通有蒸汽。The activated carbon activation furnace according to claim 2, characterized in that the inside of the furnace body is separated by at least two material passages (5), and the material passages (5) are arranged along the length direction of the furnace body, and each material passage (5) There is steam inside.
  4. 根据权利要求3所述的活性炭活化炉,其特征在于:所述炉体包括外筒体(1),至少两段分仓支撑件(4)沿外筒体(1)内壁周向设置并围成燃烧通道(6),相邻两段分仓支撑件(4)、外筒体(1)内壁以及燃烧通道(6)外壁之间围成一个物料通道(5)。The activated carbon activation furnace according to claim 3, characterized in that the furnace body comprises an outer cylinder (1), and at least two sections of the sub-station support (4) are arranged circumferentially along the inner wall of the outer cylinder (1) A combustion passage (6) encloses a material passage (5) between the adjacent two-stage silo support (4), the outer wall of the outer cylinder (1) and the outer wall of the combustion passage (6).
  5. 根据权利要求4所述的活性炭活化炉,其特征在于:每个分仓支撑件(4)包括分仓支撑柱(401)和分仓支撑板(402),所述分仓支撑柱(401)的一端与外筒体(1)内壁连接,分仓支撑柱(401)的另一端与所述分仓支撑板(402)连接,所述分仓支撑板(402)为弧形板,沿周向设置的分仓支撑板(402)在炉体内部中心位置围成径向横面为圆形的燃烧通道(6),沿炉体周向相邻的两个分仓支撑柱(401)、外筒体(1)内壁以及燃烧通道(6)外壁之间围成一个物料通道(5)的一截;若干个分仓支撑件(4)沿炉体的长度方向排列并组成一段分仓支撑件(4)。The activated carbon activation furnace according to claim 4, wherein each of the sub-tank support members (4) comprises a sub-station support column (401) and a sub-storage support plate (402), and the sub-storage support column (401) One end is connected to the inner wall of the outer cylinder (1), and the other end of the sub-station support column (401) is connected to the sub-chamber support plate (402), which is a curved plate, along the circumference To the set sub-storage support plate (402), a circular combustion passage (6) is formed in a radial horizontal direction at the center position of the furnace body, and two sub-pillar support columns (401) and an outer cylinder adjacent to each other along the circumferential direction of the furnace body A section of the material passage (5) is enclosed between the inner wall of the body (1) and the outer wall of the combustion passage (6); a plurality of sub-tank support members (4) are arranged along the length of the furnace body to form a section of the sub-station support member ( 4).
  6. 根据权利要求5所述的活性炭活化炉,其特征在于:沿炉体周向相邻的两个分仓支撑件(4)之间、沿炉体长度方向相邻的两个分仓支撑件(4)之间均采用子母扣连接在一起且其之间的连接缝隙均采用胶泥密封。The activated carbon activation furnace according to claim 5, characterized in that: two sub-tank support members (4) adjacent to each other along the longitudinal direction of the furnace body along two circumferentially adjacent sub-chamber support members (4) of the furnace body The female snaps are connected together and the joint gap between them is sealed with glue.
  7. 根据权利要求5所述的活性炭活化炉,其特征在于:所述燃烧通道(6)的尾端连接有一挡料环(19),该挡料环(19)的内壁固定在燃烧通道(6)的外壁上。The activated carbon activation furnace according to claim 5, characterized in that the end of the combustion passage (6) is connected with a retaining ring (19), and the inner wall of the retaining ring (19) is fixed to the combustion passage (6) On the outer wall.
  8. 根据权利要求5所述的活性炭活化炉,其特征在于:所述燃烧通道(6)的首端通过管道依次与蒸汽发生器(10)、除尘器(11)、烟囱(12)连通,所述蒸汽发生器(10)的进烟端和或出烟端上设置有引风机(9),所述蒸汽发生器(10)的排蒸汽口通过管道与蒸汽配入机构(7)连通,该蒸汽配入机构(7)包括多支蒸汽喷管,每个物料通道(5)内至少通入一支蒸汽喷管;空气配入机构(8)包括多支空气管,多支空气管沿燃烧通道(6)的长度方向分布且每支空气管对应穿过一个分仓支撑件(4)与燃烧通道(6)内部连通。The activated carbon activation furnace according to claim 5, wherein the first end of the combustion passage (6) is in communication with the steam generator (10), the dust remover (11), and the chimney (12) through a pipe, An inlet fan and/or a smoke outlet end of the steam generator (10) are provided with an induced draft fan (9), and the steam outlet of the steam generator (10) is connected to the steam distribution mechanism (7) through a pipe, the steam The dispensing mechanism (7) comprises a plurality of steam nozzles, at least one steam nozzle is introduced in each material passage (5); the air distribution mechanism (8) comprises a plurality of air tubes, and the plurality of air tubes are along the combustion passage (6) is distributed in the longitudinal direction and each air tube is correspondingly communicated with the interior of the combustion passage (6) through a sub-tank support (4).
  9. 根据权利要求5~8任意一项所述的活性炭活化炉,其特征在于:所述物料入炉装置(13) 通过上料机构(14)供应物料,所述出料机构(15)采用螺旋输送机,所述外筒体(1)通过其上的传动装置(16)驱动旋转,所述燃烧通道(6)的首端安装有旋转接头(18),外筒体(1)底部的两侧分别设有一个支座,外筒体(1)通过支座调整装置(17)调整两个支座的相对高度;The activated carbon activation furnace according to any one of claims 5 to 8, characterized in that the material inlet device (13) The material is supplied by a loading mechanism (14) which uses a screw conveyor, the outer cylinder (1) being driven to rotate by a transmission (16) thereon, the combustion passage (6) The first end of the outer cylinder body (1) is provided with a rotary joint (18), and one side of the bottom of the outer cylinder body (1) is respectively provided with a support, and the outer cylinder body (1) adjusts the relative heights of the two supports through the support adjusting device (17). ;
    所述外筒体(1)的内壁上由内向外依次设置有保温层(2)和耐火层(3),所述耐火层(3)采用耐火浇注料制作;所述分仓支撑件(4)由氮化硅结合碳化硅的复合材料制造;The inner wall of the outer cylinder (1) is provided with an insulation layer (2) and a refractory layer (3) from the inside to the outside, and the refractory layer (3) is made of refractory castable; the branch support (4) a composite material made of silicon nitride bonded with silicon carbide;
    每支蒸汽喷管上均设有蒸汽流量阀,每支空气管上均设有空气流量阀,炉体沿长度方向的不同位置处设有测温装置,所述蒸汽流量阀、所述空气流量阀和所述测温装置均与计算机连接。Each steam nozzle has a steam flow valve, and each air tube is provided with an air flow valve, and the furnace body is provided with a temperature measuring device at different positions along the length direction, the steam flow valve, the air flow Both the valve and the temperature measuring device are connected to a computer.
  10. 一种活性炭生产方法,其特征在于,活性炭生产开始前预热好回转式的活化炉,活性炭生产时包括以下步骤:The invention relates to a method for producing activated carbon, which is characterized in that a rotary type activation furnace is preheated before the start of activated carbon production, and the activated carbon production comprises the following steps:
    步骤A:在活化炉内设置一个燃烧通道和至少两个物料通道,所述至少两个物料通道围绕设置在所述燃烧通道周围,所述燃烧通道和所述物料通道均与活化炉内连通;Step A: providing a combustion passage and at least two material passages in the activation furnace, the at least two material passages are disposed around the combustion passage, and the combustion passage and the material passage are connected to the inside of the activation furnace;
    步骤B:通过物料入炉装置分别将物料送入各个物料通道内,向各个物料通道内分别通入蒸汽,物料活化后经出料机构出料;Step B: respectively, the materials are sent into the material passages through the material inlet device, and steam is respectively introduced into the respective material passages, and the materials are discharged after being activated by the discharging mechanism;
    步骤C:开启与燃烧通道连通的引风机,使得活化炉内为负压状态且燃烧通道内的气压低于活化炉内,从而将各个物料通道内受热后析出气体引入燃烧通道内,并与燃烧通道内通入的空气混合、燃烧;Step C: opening the induced draft fan in communication with the combustion passage, so that the inside of the activation furnace is in a negative pressure state and the air pressure in the combustion passage is lower than that in the activation furnace, so that the evolved gas in each material passage is introduced into the combustion passage after being heated, and is combusted. The air passing through the passage is mixed and burned;
    步骤D:燃烧通道内燃烧产生的热量热辐射、热传导至各个物料通道内的物料;Step D: heat generated by combustion in the combustion passage, heat radiation, heat conduction to materials in each material passage;
    步骤E:将燃烧通道内燃烧产生的烟气通入蒸汽发生器,经过换热,所产生的蒸汽后续使用,剩余烟气除尘后排出;Step E: passing the flue gas generated by the combustion in the combustion passage into the steam generator, and after the heat exchange, the generated steam is subsequently used, and the remaining flue gas is discharged after being dusted;
    以此往复,重复步骤B、步骤C、步骤D、步骤E,直至活性炭生产完成。 With this reciprocation, step B, step C, step D, and step E are repeated until the production of activated carbon is completed.
PCT/CN2017/102562 2016-10-14 2017-09-21 Activated-carbon activation furnace and activated-carbon production method WO2018068616A1 (en)

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