CN210922159U - High-efficient coal calcining system for clean production - Google Patents
High-efficient coal calcining system for clean production Download PDFInfo
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- CN210922159U CN210922159U CN201921725972.1U CN201921725972U CN210922159U CN 210922159 U CN210922159 U CN 210922159U CN 201921725972 U CN201921725972 U CN 201921725972U CN 210922159 U CN210922159 U CN 210922159U
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Abstract
The utility model relates to a raw coal calcination technical field provides a clean production's high-efficient coal system of calcining, the gas vent of calcining the coal stove links to the rotary kiln through high temperature fan, discharge room through the heat preservation pipeline, the rotary kiln prelude communicates with the deposit room, the deposit room lower part is equipped with the blanking fill top and is equipped with the raw coal feed bin, the raw coal feed bin lower extreme is inserted the feed end of rotary kiln through the pipeline, the deposit room gas vent links to each other with the surface cooler, the surface cooler includes a set of U type pipeline and collection chamber, U type pipeline lies in collection chamber top and inserts the collection chamber downwards, U type pipeline forms the series connection through the collection chamber; the gas vent of surface cooler passes through booster fan and links to each other with the sack cleaner, and the gas vent of sack cleaner links to each other with the desulfurizing tower that sprays, and the calcium sulfate receptacle is connected to the desulfurizing tower bin outlet that sprays. The utility model has the advantages of waste heat utilization, waste gas are up to standard, reduce dust pollution, calcium sulfate recycle.
Description
The technical field is as follows:
the utility model relates to a raw coal calcination equipment technical field, in particular to clean production's high-efficient coal system of calcining.
Background art:
the carburant can be used as a carburant for steel making, a carburant for cast iron, and other additive materials, such as an additive for brake pads, as a friction material. The carburant belongs to the raw material of additional steel-making and iron-making carburant, and the high-quality carburant is an essential auxiliary additive for producing high-quality steel.
The carburant has various raw materials and different production processes, and comprises wood carbon, coal carbon, coke, graphite and the like, wherein various types of carburant have various small types. The high-quality carburant generally refers to a graphitized carburant, and the arrangement of carbon atoms is in a graphite microscopic form under a high-temperature condition, so that the graphitization is called as graphitization. Graphitization can reduce the content of impurities in the carburant, improve the carbon content of the carburant and reduce the sulfur content.
The carburant for the top-blown converter steel making has the requirements of high fixed carbon, low content of ash, volatile matter, sulfur, phosphorus, nitrogen and other impurities, dryness, cleanness and moderate granularity. The granularity is too fine and easy to burn out, and the granularity is too coarse and floats on the surface of molten steel, so that the granularity is not easy to be absorbed by the molten steel. The granularity of the induction furnace is 0.2-6 mm.
Taixi coal is produced in Ru Shu ditch of Ningxia Hui autonomous region Shizu city and is named after Taixi Town. The high-grade anthracite has the characteristics of three low (low ash, low sulfur and low phosphorus), six high (high calorific value, high specific resistance, high lump coal rate, high chemical activity, high-precision coal recovery rate and high mechanical strength), coal quality exceeds that of anthracite such as Beijing, Yangquan, Jordan, Jincheng and the like, the high-grade anthracite belongs to the first nation, can be compared with famous anthracite in the world, namely Vietnam Hongkun coal, is high-quality coal which is the top of China, and is sold in more than 10 countries of Europe and America.
Due to the excellent characteristics of Taixi coal, it becomes an ideal raw material for producing carburant. At present, in the process of processing taixi coal into carburant and common calcined coal, the most main step is to calcine clean coal at high temperature of 1200-1300 ℃ without oxygen, burn out moisture and volatile components in raw coal in a common calciner/calcined coal furnace and remove impurities, and because the content of the volatile components in the raw coal is high, even if the content of the volatile components in high-quality taixi coal is 7-8%, a large amount of sulfur dioxide gas can be generated in the calcining process, and the local environment pollution is very serious. In addition, as the raw material coal is subjected to a coal washing process, wherein the raw material coal contains 7-10% of water, a large amount of heat energy is needed for removing water, and the energy consumption is high. The waste gas of the traditional common calcining furnace/calcining coal furnace is directly discharged, the outlet temperature of the gas is 700-800 ℃, so that the waste heat is not utilized, some coal calcining enterprises in the north adopt preheating to heat a plant area and the periphery in winter, but because the calcining coal plant is generally positioned in a marginal area, the periphery has few people, the heat demand of heating in winter is not high, the waste heat utilization is not high, and the season is limited. Finally, the high pollution of the carbon/calcined coal enterprises is reflected in the emission of harmful gases, and is more intuitively reflected in the dust pollution, and the air and ground coal powder/coal ash in the industrial area where the carbon/calcined coal is concentrated are very serious, because the calcined product generally contains 15% of fine particles (the particle size is less than 1mm), a small part of the fine particles are emitted along with a chimney, and a large amount of dust is generated in the subsequent screening process.
The utility model has the following contents:
in view of the above, it is necessary to design a clean production high-efficiency coal calcining system.
A clean production, high efficiency coal calcination system, comprising: the system comprises a calcined coal furnace, a heat preservation pipeline, a high-temperature fan, a rotary kiln, a pulverized coal burner, a discharge chamber, a settling chamber, a raw coal bin, a surface cooler, a bag-type dust remover, a spray desulfurization tower, a feeding device and a calcium sulfate container; wherein, the exhaust port of the coal calcining furnace is connected to the rotary kiln through a heat preservation pipeline, a high temperature fan and a discharge chamber, namely, the waste gas of the coal calcining furnace is directly discharged to the atmosphere and is converted into recycling, and the raw coal is dried through the rotary kiln to be dehydrated; the discharge port of the rotary kiln is connected with one wall surface of the discharge chamber in a sealing and rotating manner, the other wall surface opposite to the wall surface is connected with a heat-insulating pipeline and a pulverized coal burner, the lower part of the discharge chamber is provided with a hopper-shaped discharge port, and a feeding device is arranged between the discharge port and the feed port of the calcining coal furnace; the feeding end of the rotary kiln is in sealed rotary connection with the settling chamber, a blanking hopper is arranged at the lower part of the settling chamber, a raw coal bin is arranged above the settling chamber, the lower end of the raw coal bin is inserted into the feeding end of the rotary kiln through a pipeline, and the outer wall of the pipeline of the raw coal bin is sealed with the top of the settling chamber; the air outlet of the settling chamber is connected with a surface cooler, the surface cooler comprises a group of U-shaped pipelines and a collecting chamber, the U-shaped pipelines are positioned above the collecting chamber and are downwards inserted into the collecting chamber, the U-shaped pipelines are communicated with the inside of the collecting chamber, the U-shaped pipelines are connected in series through the collecting chamber, and the caliber of the collecting chamber is more than 1.5 times of the diameter of the U-shaped pipelines; the gas vent of surface cooler passes through booster fan and links to each other with the sack cleaner, and the gas vent of sack cleaner links to each other with the desulfurizing tower that sprays, and the calcium sulfate receptacle is connected to the desulfurizing tower bin outlet that sprays. Compared with the traditional spray desulfurization tower, the prior surface cooler and the bag-type dust remover remove dust in gas, so that the collected gas is relatively pure calcium sulfate instead of sludge, has good economic value and can be directly sold to downstream manufacturers.
Coal is always accumulated in the hopper-shaped discharge port of the discharge chamber, so that high-temperature gas can be effectively prevented from being discharged from the discharge port; similarly, a coal layer with a certain thickness is always kept in the raw coal bunker and the blanking hopper of the settling chamber, and high-temperature gas is prevented from being discharged from the raw coal bunker and the blanking hopper. And when the high-temperature gas is insufficient, starting the pulverized coal burner for auxiliary heating.
Preferably, the calcining coal furnace is vertical, the upper opening of the calcining coal furnace is a feeding end, the lower opening of the calcining coal furnace is a discharging end, the region enclosed by the innermost refractory bricks of the furnace body from top to bottom is an inner furnace chamber, the inner furnace chamber is sequentially divided into a preheating region, a high-temperature region and a cooling region from the feeding end to the discharging end, an air passage is reserved between the top of the innermost refractory bricks and the furnace top and used for allowing volatile components to enter a combustion layer through the air passage, an intermediate refractory brick is also built between the innermost refractory bricks and the outer wall of the furnace body, a combustion layer is arranged between the intermediate refractory bricks and the innermost refractory bricks, an air layer is arranged between the intermediate refractory bricks and the outer wall of the furnace body, the top of the air layer is closed, the lower part of the air layer is open, the lower part of the air passage. And the volatile component is combustible gas, is gasified at 700-800 ℃, enters a combustion layer through the top of the furnace, is subjected to small-amount combustion in a preheating zone and large-amount combustion in a high-temperature zone by adjusting the distribution section and the distribution amount of air through the position and the size of a distribution hole, and is burnt out in the transition zone of the high-temperature zone and a cooling zone. The calcined product is discharged from the discharge end.
Preferably, the top of the settling chamber is provided with a cooling explosion-proof device, and the cooling explosion-proof device comprises: a water tank, a lower barrel, an upper barrel and a chain; the basin sets up at the settling chamber top, and lower bucket lower extreme is fixed with the settling chamber top, and lower bucket upper end height goes out basin surface of water and uncovered, and lower bucket and the inside UNICOM of settling chamber go up the bucket and be the tubbiness, and its back-off forms the water seal structure on lower bucket, and chain one end is fixed on last bucket, and the chain other end is fixed on cooling explosion-proof equipment, and chain length is enough to make when last bucket shifts up the water seal inefficacy just restricts and go up the bucket and drop to settling chamber side below. The temperature of the gas entering the settling chamber after heat exchange is still very high, about 300 ℃, in order to prolong the service life of the settling chamber, a cooling water tank is arranged on the settling chamber, and meanwhile, an explosion-proof device is arranged in order to avoid danger caused by overlarge pressure in the system.
Preferably, the pulverized coal burner includes: a burner main body, a pulverized coal machine and an igniter; the burner main body is fixed in the middle of the discharge room, the tail part of the burner main body is exposed, and the pulverized coal machine and the igniter are respectively connected with the tail part of the burner main body through respective pipelines; the coal pulverizer includes: a hopper, a hammer crusher and a fan; the hammer crusher is used for crushing large particles falling from the hopper, and the fan is used for conveying crushed coal powder into the combustor main body through a pipeline. The igniter is ignited by inputting gas or oil to the burner body.
Preferably, the top of the coal calcining furnace is provided with a bin.
Preferably, a spiral material conveyer is arranged below a blanking hopper of the settling chamber.
Preferably, the feeding device comprises a conveyor and a bucket elevator, and the bucket elevator is arranged beside the calcined coal furnace.
The utility model dries the raw coal moisture through the waste gas of the calcining coal furnace, so that the raw coal only needs to be calcined to discharge volatile after entering the calcining furnace, thereby realizing the utilization of waste heat, improving the production efficiency, improving the productivity of the calcining coal furnace by more than 1 time, and simultaneously, the pulverized coal discharged in the drying process greatly reduces the pulverized coal amount after calcination, namely, the later dust pollution is reduced; finally, the invention solves the problem of air pollution caused by sulfur dioxide emission and increases the income of calcium sulfate byproducts.
Description of the drawings:
FIG. 1 is a schematic diagram of a clean-production high-efficiency coal calcination system according to a preferred embodiment.
Fig. 2 is a schematic sectional view of a preferred embodiment of a coal calcining furnace.
Fig. 3 is an enlarged partial view of portion a of fig. 1.
In the figure: the device comprises a calcined coal furnace 1, a heat preservation pipeline 21, a high-temperature fan 22, a rotary kiln 31, a pulverized coal burner 32, a discharge chamber 33, a settling chamber 34, a raw coal bin 35, a surface cooler 4, a bag-type dust remover 5, a spray desulfurization tower 6, a feeding device 7, a calcium sulfate container 8, a feeding end 191, a discharge end 192, innermost-layer refractory bricks 11, a preheating zone 111, a high-temperature zone 112, a cooling zone 113, an air channel 12, a combustion layer 13, a furnace body outer wall 14, intermediate-layer refractory bricks 15, an air layer 16, a labyrinth air channel 161, an air distribution hole 151, a pipeline 351, a U-shaped pipeline 41, a collection chamber 42, a booster fan 43, a water tank 341, a lower barrel 342, an upper barrel 343, a lock chain 344, a bin 9, a spiral conveyor 345, a conveyor 72 and a.
The specific implementation mode is as follows:
in this patent, "raw coal" refers to coal that is purchased from an upstream enterprise to be processed into virgin calcined coal or a carburant.
As shown in the attached figures 1-3, the high-efficiency coal calcining system for clean production comprises: the system comprises a calcining coal furnace 1, a heat preservation pipeline 21, a high-temperature fan 22, a rotary kiln 31, a pulverized coal burner 32, a discharge chamber 33, a settling chamber 34, a raw coal bin 35, a surface cooler 4, a bag-type dust remover 5, a spray desulfurization tower 6, a feeding device 7 and a calcium sulfate container 8; wherein, the exhaust port of the coal calcining furnace 1 is connected to the rotary kiln 31 through the heat preservation pipeline 21, the high temperature fan 22 and the discharge chamber 33, namely, the waste gas of the coal calcining furnace 1 is converted from directly discharging to the atmosphere to recycling, and the raw coal is dried through the rotary kiln 31 to be dehydrated; the discharge port of the rotary kiln 31 is connected with one wall surface of the discharge chamber 33 in a sealing and rotating way, the other wall surface opposite to the wall surface is connected with the heat preservation pipeline 21 and the pulverized coal burner 32, the lower part of the discharge chamber 33 is provided with a hopper-shaped discharge port, and a feeding device 7 is arranged between the discharge port and the feed port of the calcining coal furnace 1; the feed end of the rotary kiln 31 is in sealed rotary connection with the settling chamber 34, the blanking hopper is arranged at the lower part of the settling chamber 3, the raw coal bin 35 is arranged above the settling chamber, the lower end of the raw coal bin 35 is inserted into the feed end of the rotary kiln 31 through a pipeline 351, and the outer wall of the pipeline 351 of the raw coal bin 35 is sealed with the top of the settling chamber 34; the air outlet of the settling chamber 34 is connected with the surface cooler 4, the surface cooler 4 comprises a group of U-shaped pipelines 41 and a collection chamber 42, the U-shaped pipelines 41 are positioned above the collection chamber 42 and downwards inserted into the collection chamber 42, the U-shaped pipelines 41 are communicated with the interior of the collection chamber 42, the U-shaped pipelines 41 are connected in series through the collection chamber 42, and the caliber of the collection chamber 42 is more than 1.5 times of the diameter of the U-shaped pipelines 41; the exhaust port of the surface cooler 4 is connected with the bag-type dust collector 5 through the booster fan 43, the exhaust port of the bag-type dust collector 5 is connected with the spray desulfurization tower 6, the discharge port of the spray desulfurization tower 6 is connected with the calcium sulfate container 8, and the calcium sulfate container 8 has corrosion resistance. Compared with the traditional spray desulfurization tower, the surface cooler 4 and the bag-type dust remover 5 remove dust in gas, so that relatively pure calcium sulfate instead of sludge is collected, the economic value is good, and the calcium sulfate can be directly sold to downstream manufacturers.
Coal always keeps being accumulated in the hopper-shaped discharge opening of the discharge chamber 33, so that high-temperature gas can be effectively prevented from being discharged from the hopper-shaped discharge opening; similarly, a coal layer of a certain thickness is always maintained in the raw coal bunker 35 and the dropping hopper of the settling chamber 34, and the high-temperature gas is prevented from being discharged therefrom.
In the embodiment, the calcining coal furnace 1 is vertical, the upper opening is a feeding end 191, the lower opening is a discharging end 192, the region enclosed by the innermost layer refractory bricks 11 of the furnace body from top to bottom is an inner hearth, the inner hearth is sequentially divided into a preheating region 111, a high temperature region 112 and a cooling region 113 from the feeding end to the discharging end, an air flue 12 is left between the top of the innermost layer refractory bricks 11 and the furnace top, the air flue 12 is used for the volatile component to enter a combustion layer 13 through the air flue, an intermediate layer refractory brick 15 is also built between the innermost layer refractory brick 11 and the outer wall 14 of the furnace body, the combustion layer 13 is arranged between the intermediate layer refractory brick 15 and the innermost layer refractory brick 11, an air layer 16 is arranged between the intermediate layer refractory brick 15 and the outer wall 14 of the furnace body, the top of the air layer 16 is closed, the lower part is open, the lower part of the air layer 16 is a labyrinth air passage 161, the middle layer firebricks 15 are provided with three air distribution holes 151 from top to bottom, and the air distribution holes 151 enable the air to flow into the combustion layer 13. The volatile component is combustible gas, the volatile component is gasified at 700-800 ℃, enters the combustion layer 13 through the furnace top air flue 12, and is subjected to small-amount combustion in the preheating zone 111 and large-amount combustion in the high-temperature zone 112 through adjusting the distribution section and the distribution amount of air through the position and the size of the air distribution hole 151, and the residual part is burnt out in the transition zone of the high-temperature zone 112 and the cooling zone 113. The calcined product is discharged through a discharge end 192.
In this embodiment, the top of the settling chamber 34 is provided with a cooling explosion-proof device, which comprises: a water tank 341, a lower barrel 342, an upper barrel 343, a chain 344; the water tank 341 is arranged at the top of the settling chamber 34, the lower end of the lower barrel 342 is fixed with the top of the settling chamber 34, the upper end of the lower barrel 342 is higher than the water surface of the water tank 341 and is open, the lower barrel 342 is communicated with the interior of the settling chamber 34, the upper barrel 343 is barrel-shaped and is reversely buckled on the lower barrel 342 to form a water seal structure, one end of the chain 344 is fixed on the upper barrel 343, the other end of the chain 344 is fixed on the cooling explosion-proof device, and the length of the chain 344 is enough to enable the water seal to be invalid and limit the upper barrel 343 to fall to the lower side of the settling chamber 34. The temperature of the gas entering the settling chamber 34 after heat exchange is still high, about 300 ℃, in order to prolong the service life of the settling chamber 34, a cooling water tank is arranged on the gas, and meanwhile, an explosion-proof device is arranged in order to avoid danger caused by overlarge pressure in the system.
In the present embodiment, the pulverized coal burner 32 includes: a burner main body, a pulverized coal machine and an igniter; the burner main body is fixed in the middle of the discharge room, the tail part of the burner main body is exposed, and the pulverized coal machine and the igniter are respectively connected with the tail part of the burner main body through respective pipelines; the coal pulverizer includes: a hopper, a hammer crusher and a fan; the hammer crusher is used for crushing large particles falling from the hopper, and the fan is used for conveying crushed coal powder into the combustor main body through a pipeline. The igniter is ignited by inputting fuel gas or fuel oil into the burner body, and is ignited by electrons during ignition.
In the present embodiment, a bunker 9 is provided on the top of the coal calcining furnace 1. A screw conveyor 345 is arranged below the blanking hopper of the settling chamber 34. The feeding device 7 comprises a conveyor 72 and a bucket elevator 71, and the bucket elevator 71 is arranged beside the calcined coal furnace.
In other embodiments, the heat-insulating pipeline 21 may be directly connected to the original chimney of the coal calcining furnace, and a three-way valve is installed to control the exhaust path of the flue gas. The coal calcining furnace 1 can adopt other existing designs. The pulverized coal burner 32 may be purchased as an existing device.
An environment-friendly and energy-saving coal calcining method comprises the following steps: high-temperature waste gas generated by the calcining coal furnace 1 is pressurized and sent into a discharging room 33 through a high-temperature fan 22 through a heat insulation pipeline 21, the high-temperature waste gas is blown to the rotary kiln 31 from the discharging room 33, the high-temperature waste gas and raw coal fed into a raw coal bin 35 are subjected to convective heat exchange, the moisture of the raw coal is evaporated, and small particles in the raw coal are blown into a blanking hopper of a settling chamber 33; the high-temperature gas after heat exchange with the raw coal is wrapped with water vapor and carries dust in the raw coal to enter the surface cooler 4, partial dust is removed in the collection chamber 42, and the water vapor is condensed after the temperature of the gas is reduced to below 170 ℃ at the tail part of the surface cooler; the dehydrated gas enters a bag-type dust collector 5 for dust removal, then enters a spray desulfurization tower 6 for desulfurization, the gas reaching the standard is discharged into the atmosphere from the top of the spray desulfurization tower 6, and calcium sulfate precipitate at the bottom of the spray desulfurization tower 6 intermittently enters a calcium sulfate container 8 for storage; the dried and dedusted raw coal is discharged from the discharging room 33 and then fed into the calcining coal furnace 1 through the feeding device 7.
In the present embodiment, a coal layer with a thickness of at least 0.5-2 m is always kept in the raw coal bunker 35; feeding the small particles collected by the blanking hopper of the settling chamber 34 into the pulverized coal burner 32, and keeping a coal bed with the thickness of at least 0.3-1 meter in the blanking hopper of the settling chamber 34; the coal dust collected by the surface cooler 4 and the bag-type dust collector 5 is sent to the coal powder burner 32.
Claims (7)
1. A clean production high-efficiency coal calcining system is characterized by comprising: the system comprises a calcined coal furnace, a heat preservation pipeline, a high-temperature fan, a rotary kiln, a pulverized coal burner, a discharge chamber, a settling chamber, a raw coal bin, a surface cooler, a bag-type dust remover, a spray desulfurization tower, a feeding device and a calcium sulfate container; wherein, the exhaust port of the calcining coal furnace is connected to the rotary kiln through a high-temperature fan and a discharge room by a heat-insulating pipeline, the discharge port of the rotary kiln is in sealed rotary connection with one wall surface of the discharge room, the other wall surface opposite to the wall surface is connected with the heat-insulating pipeline and a pulverized coal burner, the lower part of the discharge room is provided with a hopper-shaped discharge port, and a feeding device is arranged between the discharge port and the feed inlet of the calcining coal furnace; the feeding end of the rotary kiln is in sealed rotary connection with the settling chamber, a blanking hopper is arranged at the lower part of the settling chamber, a raw coal bin is arranged above the settling chamber, the lower end of the raw coal bin is inserted into the feeding end of the rotary kiln through a pipeline, and the outer wall of the pipeline of the raw coal bin is sealed with the top of the settling chamber; the air outlet of the settling chamber is connected with a surface cooler, the surface cooler comprises a group of U-shaped pipelines and a collecting chamber, the U-shaped pipelines are positioned above the collecting chamber and are downwards inserted into the collecting chamber, the U-shaped pipelines are communicated with the inside of the collecting chamber, the U-shaped pipelines are connected in series through the collecting chamber, and the caliber of the collecting chamber is more than 1.5 times of the diameter of the U-shaped pipelines; the gas vent of surface cooler passes through booster fan and links to each other with the sack cleaner, and the gas vent of sack cleaner links to each other with the desulfurizing tower that sprays, and the calcium sulfate receptacle is connected to the desulfurizing tower bin outlet that sprays.
2. The high-efficiency coal calcining system for clean production as claimed in claim 1, wherein the calcining coal furnace is vertical, the upper opening is a feeding end, the lower opening is a discharging end, the region enclosed by the innermost refractory brick of the furnace body from top to bottom is an inner hearth, the inner hearth is sequentially divided into a preheating region, a high temperature region and a cooling region from the feeding end to the discharging end, an air passage is reserved between the top of the innermost refractory brick and the furnace top and used for allowing volatile components to enter a combustion layer through the air passage, an intermediate refractory brick is also built between the innermost refractory brick and the outer wall of the furnace body, the combustion layer is arranged between the intermediate refractory brick and the innermost refractory brick, an air layer is arranged between the intermediate refractory brick and the outer wall of the furnace body, the top of the air layer is closed, the lower part of the air layer is open, the lower part of the air layer is a labyrinth air passage, three air distribution holes are arranged.
3. The clean high-efficiency coal calcining system as claimed in claim 1, wherein the top of the settling chamber is provided with a cooling explosion-proof device, and the cooling explosion-proof device comprises: a water tank, a lower barrel, an upper barrel and a chain; the basin sets up at the settling chamber top, and lower bucket lower extreme is fixed with the settling chamber top, and lower bucket upper end height goes out basin surface of water and uncovered, and lower bucket and the inside UNICOM of settling chamber go up the bucket and be the tubbiness, and its back-off forms the water seal structure on lower bucket, and chain one end is fixed on last bucket, and the chain other end is fixed on cooling explosion-proof equipment, and chain length is enough to make when last bucket shifts up the water seal inefficacy just restricts and go up the bucket and drop to settling chamber side below.
4. The clean high efficiency coal calcination system of claim 1, wherein the coal burner comprises: a burner main body, a pulverized coal machine and an igniter; the burner main body is fixed in the middle of the discharge room, the tail part of the burner main body is exposed, and the pulverized coal machine and the igniter are respectively connected with the tail part of the burner main body through respective pipelines; the coal pulverizer includes: a hopper, a hammer crusher and a fan; the hammer crusher is used for crushing large particles falling from the hopper, and the fan is used for conveying crushed coal powder into the combustor main body through a pipeline.
5. The clean production high-efficiency coal calcining system as claimed in claim 1, wherein a bunker is arranged at the top of the calcining coal furnace.
6. The clean high-efficiency coal calcining system as claimed in claim 1, wherein the screw conveyor is arranged under the blanking hopper of the settling chamber.
7. The clean production high-efficiency coal calcining system as claimed in claim 1, wherein the feeding device comprises a conveyor and a bucket elevator, and the bucket elevator is arranged beside the calcining coal furnace.
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| CN201921725972.1U CN210922159U (en) | 2019-10-15 | 2019-10-15 | High-efficient coal calcining system for clean production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046386A (en) * | 2022-08-12 | 2022-09-13 | 淄博市鲁中耐火材料有限公司 | Rotary solid material calcining device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046386A (en) * | 2022-08-12 | 2022-09-13 | 淄博市鲁中耐火材料有限公司 | Rotary solid material calcining device |
| CN115046386B (en) * | 2022-08-12 | 2022-11-04 | 淄博市鲁中耐火材料有限公司 | Rotary solid material calcining device |
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