CN114932014A - High-temperature waste gas treatment unit and treatment method - Google Patents
High-temperature waste gas treatment unit and treatment method Download PDFInfo
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- CN114932014A CN114932014A CN202210567959.8A CN202210567959A CN114932014A CN 114932014 A CN114932014 A CN 114932014A CN 202210567959 A CN202210567959 A CN 202210567959A CN 114932014 A CN114932014 A CN 114932014A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a high-temperature waste gas treatment unit, and belongs to the technical field of industrial waste gas treatment. A high-temperature waste gas treatment unit comprises a dust removal box; a filtering chamber is arranged in the dust removing box; the right end of the filter chamber is provided with a waste gas inlet; the filter screen is arranged in the filter chamber; the water tank is arranged at the lower end of the filter chamber; a guide plate and a negative plate are arranged in the water tank; the guide plate is made of conductive materials, and the negative plate is electrified to make the guide plate carry charges; the inner wall of the water tank is provided with a waste water outlet; the water curtain generator is arranged at the upper end of the filtering chamber and is used for spraying water flow to form a water curtain, and the spraying direction of the water flow can rotate; the jet orifice of the water flow is contacted with the anion water generator, so that the water curtain is attached with negative charges; when waste gas is filtered, the water curtain is sprayed towards the guide plate; the filter chamber is internally provided with a drying belt which is close to the waste gas outlet. The waste heat recovery device can realize the waste heat recovery of high-temperature waste gas, and simultaneously, carry out dust removal and purification treatment on the waste gas, thereby reducing the environmental pollution.
Description
Technical Field
The invention belongs to the technical field of industrial waste gas treatment, and particularly relates to a high-temperature waste gas treatment unit.
Background
Industrial waste gas refers to the collective term for the various pollutant-containing gases emitted into the air during the combustion and production processes of fuels in the factory area of an enterprise. The industrial waste gas containing carbon disulfide, hydrogen sulfide, nitrogen oxide, chlorine, hydrogen chloride, carbon monoxide and productive dust is discharged into the atmosphere, so that the environment is polluted, the urban surrounding climate and weather are adversely affected, such as heat island effect, acid rain and the like, the survival of animals and plants is threatened, the physiological functions of the animals and plants are damaged, and in addition, pollutants in the waste gas can react and accumulate in the human body, and the direct negative effect can be generated on the health of the human body.
In the present environment, the problem of air pollution exists all the time, and industrial waste gas cannot be directly discharged into the atmosphere. In the prior art, most of multi-waste gas is not fully treated, the treatment effect is poor, the waste gas is not completely purified, and the environment-friendly effect is not achieved; moreover, most industrial waste gas contains a large amount of heat, and energy is wasted if the industrial waste gas is not utilized. In the prior art, most of exhaust treatment devices are inconvenient to clean filter plates for filtering particulate matters in exhaust, and a large amount of large particulate matters are deposited on the filter plates after the exhaust treatment devices are used for a long time, so that the filtering capacity is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-temperature waste gas treatment unit which can realize the recycling of waste heat of high-temperature waste gas and simultaneously carry out dust removal and purification treatment on the waste gas, thereby reducing the environmental pollution caused by industrial waste gas.
The invention relates to a high-temperature waste gas treatment unit, which comprises a dust removal box;
a filtering chamber is arranged inside the dust removing box;
a filter screen, a water curtain generator and a water tank are arranged in the filter chamber; the right end of the filter chamber is provided with a waste gas inlet; the filter screen is fixedly arranged in the filter chamber and covers the passing surface of the waste gas in the filter chamber;
the water tank is fixedly arranged at the lower end of the filtering chamber and is communicated with the filtering chamber; the inner wall of the water tank is made of an insulating material or the surface of the water tank is covered with an insulating coating; a guide plate and a negative plate are fixedly arranged in the water tank; the guide plate is made of conductive materials and is hermetically connected with the bottom of the water tank to form a cavity; the negative plate is arranged in the cavity and is electrified to make the guide plate carry charges; a waste water outlet is arranged on the inner wall of one side of the water tank;
the water curtain generator is fixedly arranged at the upper end of the filtering chamber and is used for spraying water flow to form a water curtain, and the spraying direction of the water flow has the capability of rotating so that the water flow is contacted with the filtering net; the jet orifice of the water flow is contacted with the anion water generator so as to make the water curtain carry negative charges; the water curtain is sprayed towards the flow guide plate when the waste gas is filtered;
the influence of the repulsive force of the guide plate on the clean water with the negative ions is smaller than the gravity influence of the falling of the clean water, so that the water flow is decelerated and falls to form a water curtain without cutoff;
a drying belt is arranged in the filtering chamber, is close to the waste gas outlet and is positioned behind the water curtain to absorb moisture in the waste gas passing through the water curtain.
As a further improvement of the invention, the guide plate is formed by sealing and connecting two inclined rigid plates and is in sealing connection with the lower bottom surface of the water tank, so that a sealed triangular cavity is built between the guide plate and the lower bottom surface of the water tank.
As a further improvement of the invention, the waste water outlet is fixedly connected with a siphon tube which is an inverted U-shaped tube; one end of the siphon pipe extending into the water tank is close to the bottom of the water tank, and the highest end of the siphon pipe is higher than the bottom surface of the water tank; during the drainage, the water level in the water tank is ensured to be higher than the water level of the waste water at the outer side.
As a further improvement of the invention, the water curtain generator comprises a motor, a spray head, a rotating rod and a negative ion water generator; the motor is externally arranged at the upper end of the filtering cavity, the rotating rod is made of rigid materials, the rotating rod is connected with the motor and the spray head, the rotating rod is in rotating connection with the motor and is fixedly connected with the spray head, and the motor controls the rotating rod to rotate so as to indirectly control the spray head to rotate to all directions; the spray head is connected with a water pipeline; the negative ion water generator is fixedly connected to the upper end of the filtering chamber and is connected with an external voltage, the negative ion water generator is connected with a water pump, and high-frequency voltage is provided in the negative ion water generator so that the entering water is provided with negative ions; the negative ion water generator is connected with the spray head through a water pipeline.
As a further improvement of the invention, the dust removal box comprises an electrostatic dust removal chamber which is fixedly arranged on one side of the drying belt far away from the filter chamber, the electrostatic dust removal chamber comprises a dust collection box and an electric field generator, the electric field generator is fixedly arranged at the upper end of the electrostatic dust removal chamber, and a high-voltage electrostatic field is provided to charge the small particle dust particles with negative electricity during working; the dust collection box is detachably connected to the lower end of the electrostatic dust removal chamber, a dust collection plate is fixedly arranged on the lower bottom surface of the dust collection box, and the dust collection plate is electrified to be an anode plate so as to adsorb particles with negative electricity.
As a further improvement of the invention, the dust removal box comprises an electrostatic dust removal chamber which is fixedly arranged on one side of the drying belt far away from the filter chamber, the electrostatic dust removal chamber comprises a dust collection box and an electric field generator, the electric field generator is vertically arranged on the inner wall of the electrostatic dust removal chamber and covers the passing surface of waste gas, and a high-voltage electrostatic field is provided to enable small-particle dust particles to be charged negatively during working; the dust collection box is detachably connected to the lower end of the electrostatic dust removal chamber, a dust collection plate is fixedly arranged on the lower bottom surface of the dust collection box, and the dust collection plate is electrified to be an anode plate so as to adsorb particles with negative electricity.
As a further improvement of the invention, the high-temperature industrial waste gas treatment unit comprises a heat treatment box; the heat treatment box comprises a breather pipe, a cold water inlet and a hot water outlet, wherein the interior of the heat treatment box is a closed space, the upper end surface of the heat treatment box is provided with an air inlet for introducing high-temperature waste gas, and the lower end surface of the heat treatment box is provided with an air outlet for discharging cooled waste gas; the upper end surface of the heat treatment box is provided with a hot water outlet, and the bottom surface is provided with a cold water inlet; a vent pipe is fixedly arranged between the air inlet and the air outlet and has heat conductivity; the quantity of breather pipe is many, and multirow multiseriate is constituteed to many breather pipes, is array evenly to be arranged in the heat treatment case.
As a further improvement of the invention, a valve is arranged in the air outlet and comprises a contraction air bag and a deformation membrane, the contraction air bag is fixedly arranged on the inner wall of the vent pipe communicated with the air outlet and is made of flexible material, so that the contraction air bag is heated to expand towards one side of the air outlet when in work; the deformation membrane is a component of the pipe wall of the air outlet and is abutted against one end of the contraction air bag close to the air outlet, the deformation membrane is made of an elastic material and protrudes towards one side of the air outlet when being controlled by the expanded contraction air bag; the deformation membrane has no overlapping intersection with the connecting ports of the vent pipe and the air outlet in a free state, namely the deformation membrane has a tendency of being flat with the wall of the air outlet under the action of no external force.
As a further improvement of the invention, the high-temperature industrial waste gas treatment unit comprises a low-temperature plasma reaction box, a waste gas inlet of the low-temperature plasma reaction box is connected with a waste gas outlet of the dust removal box, a high-voltage electric field is arranged in the low-temperature plasma reaction box to activate waste gas as active particles, and the active particles are easy to generate oxidation-reduction reaction to form harmless substances.
The invention discloses a treatment method of a high-temperature waste gas treatment unit, which comprises the following steps:
s1, when the device works, waste gas is introduced into the high-temperature waste gas treatment unit, the waste gas firstly enters a vent pipe of a heat treatment box, the waste gas is subjected to heat transfer to cold water in the heat treatment box through the vent pipe, the cooled waste gas contacts a valve, a shrinkage air bag in the valve is contracted when meeting cold to control a deformation film to recover to a free state, the valve is opened, and the waste gas enters a dust removal box through the valve;
s201, during work, waste gas enters a dust removal box, and is filtered to remove part of large particulate matters after passing through a filter screen in a filter chamber;
s202, enabling the waste gas to enter a chamber in a filtering chamber after passing through a filtering net, enabling a water curtain generator to spray water flow towards a flow guide plate, starting an anion water generator and a negative plate 2 to generate a water curtain, cleaning the waste gas by using the water curtain, and filtering most of large-particle substances in the waste gas again;
s203, enabling the waste gas to enter a drying belt after passing through a filter screen and a water curtain to remove moisture brought by the waste gas after passing through the water curtain;
s204, after the waste gas leaves, the jet direction of the water flow of the water curtain generator rotates so as to enable the water flow filter screen to be cleaned in all directions;
s205, accumulating sewage with large granular substances generated in the process at the bottom of a water tank outside a discharge device through a siphon pipe;
s3, the waste gas leaves the electrostatic dust removal chamber and enters a low-temperature plasma reaction box, and the waste gas is subjected to low-temperature plasmaDischarging under the action of high-voltage electric field in daughter reaction box to generate low-temperature plasma, and oxidizing to obtain H 2 O、CO 2 And the like which do not cause air pollution; and after the reaction is completed, discharging the waste gas out of the high-temperature industrial waste gas treatment unit.
Compared with the prior art, the invention has the beneficial effects that: the heat treatment box recycles waste heat in the high-temperature waste gas, and simultaneously, the generated hot water can be applied to production and life; the dust removal box removes large particle substances and small particle dust in the waste gas, and prevents the waste gas from being discharged into the atmosphere to have harmful influence on climate and the like; harmful and toxic gases in the waste gas are removed through reaction in the low-temperature plasma reaction box, and the harmful and toxic gases are prevented from being discharged into the atmosphere to harm the survival of organisms;
an air inlet is formed in the upper end face of the heat treatment box, an air outlet is formed in the lower end face of the heat treatment box, and the high-temperature waste gas enters the heat treatment box in a moving direction from top to bottom; the upper end surface of the heat treatment box is provided with a hot water outlet, the bottom surface of the heat treatment box is provided with a cold water inlet, so that the heat treatment box is filled with cold water from bottom to top, the moving directions of the cold water and the high-temperature waste gas are opposite, the contact is more sufficient, and the heat energy transfer efficiency is higher;
the plurality of vent pipes are uniformly arranged in the heat treatment box in an array manner, so that the contact area between the cold water and the vent pipes is increased, the cold water is uniformly heated, the heat transfer efficiency is improved, and the heating speed and the uniformity of the vent pipes to the cold water are accelerated;
the negative ions generated by the negative plate have a repulsive effect on water with negative ions sprayed by the spray head, the repulsive force can prevent water drops from being incapable of generating a water curtain due to the fact that the gap is larger when the water drops are closer to the lower end of the chamber because of overlarge acceleration during falling, and the water curtain can effectively wash away large particulate matters in waste gas, so that the large particulate matters are removed more thoroughly by the filter chamber;
the rotating rod controls the rotation of the spray head, so that the clean water sprayed from the spray head can be sprayed on the filter screens at two sides in an all-around manner, large granular substances attached to the filter screens are effectively washed away, the blockage caused by excessive use of the filter screens is prevented, and the service life of the equipment is prolonged;
the arrangement of the guide plate enables the collection of the waste water in the water tank to be more convenient, the cleaned waste water can be gathered in the water tank through the inclined plane, and meanwhile, a higher water level is easier to manufacture, so that the waste water is favorably drained out of the water tank through the siphon pipe;
the siphon is arranged to discharge the waste water in the water tank more thoroughly, and if the siphon is not arranged, water and dust can be discharged by arranging a water outlet at the lower end of the side wall of the water tank in the conventional way in the prior art; however, because the water outlet directly discharges water, at the beginning of the formation of the water curtain, the guide plate only has less water, the guide plate is negatively charged, dust in the water falls on the guide plate and then is negatively charged, and partial dust can fly off the guide plate because the adhesion of the water to the dust is eliminated due to the repulsion of electric anisotropy and is adhered to the side wall of the water tank or even the inner wall of the filtering chamber; the siphon is used, so that when the operation is started, water on the guide plate begins to accumulate until the liquid level exceeds the siphon, and at the moment, dust in the water is greatly resisted by the water, and compared with the arrangement mode of the water outlet, the water is difficult to separate from the range of the guide plate, so that the dust is well discharged; after the upper liquid level of the guide plate exceeds the siphon, dust carried by water enters the siphon to be discharged out of the water tank; because water is fluid and has viscous force, when water siphons internally, dust can be pulled to move together, and when the water quantity on the guide plate is small, the function of limiting the flying-off of the dust can be increased;
a drying belt is fixedly arranged between the filtering chamber and the electrostatic dust removal chamber, so that a large amount of water vapor brought by cleaning of waste gas is removed;
the dust collection box is detachably connected, and can be detached after the device finishes filtering the waste gas, so that tiny particles adsorbed on the dust collection plate can be cleaned conveniently, and the phenomenon that the adsorption effect of the anode on negative dust particles is influenced by too much accumulated dust particles is prevented;
the electric field generator can be vertically arranged, and after passing through the electric field generator, dust in the waste gas is negatively charged and moves towards the dust collecting plate on the lower side; but also the action range of the electric field generator to the dust in the waste gas can be increased.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is a schematic view of the sectional structure of the dust box of the present invention;
figure 3 is a schematic cross-sectional view of the filtering chamber of the present invention;
FIG. 4 is a schematic view of the process of drawing away large particulate matter during siphoning according to the present invention;
FIG. 5 is a schematic view of the structure of the valve in the outlet when the exhaust gas cooling is complete in the present invention;
fig. 6 is a schematic view of the structure of the valve in the outlet when the exhaust gas is not completely cooled in the present invention.
Detailed Description
The first embodiment is as follows: referring to fig. 1-6, a high temperature exhaust treatment unit includes a heat treatment chamber 1 and a dust removal chamber 2.
The heat treatment tank 1 includes a vent pipe 11, a cold water inlet 12, and a hot water outlet 13.
The inside of the heat treatment box 1 is a closed space, the upper end surface of the heat treatment box 1 is provided with an air inlet, the lower end surface of the heat treatment box 1 is provided with an air outlet, and during work, the air inlet controls the high-temperature industrial waste gas to enter, and the air outlet discharges the industrial waste gas after heat treatment; in the condition that the upper end surface of the heat treatment box 1 is provided with a hot water outlet 13, and the bottom surface of the heat treatment box 1 is provided with a cold water inlet 12, when high-temperature waste gas moves from top to bottom to an air outlet through an air inlet, cold water fills the heat treatment box 1 from the cold water inlet 12 to top, at the moment, the moving directions of the cold water and the high-temperature waste gas are opposite, the contact is more sufficient, and the heat energy transfer efficiency is higher;
the air vent pipes 11 are fixedly arranged between the air inlet and the air outlet, the air vent pipes 11 are made of aluminum alloy and other materials with good heat conductivity, the number of the air vent pipes 11 is multiple, and the air vent pipes 11 form multiple rows and multiple columns which are uniformly arranged in the heat treatment box 1 in an array manner; due to the arrangement, when the heat treatment box 1 is filled with cold water, the cold water can be heated in multiple directions by the plurality of vent pipes 11, the contact area is increased, the heating speed is increased, the cold water is uniformly heated, and the heating efficiency is improved;
a valve is arranged in the air outlet and comprises a contraction air bag and a deformation membrane, the contraction air bag is fixedly arranged on the inner wall of the air pipe 11 communicated with the air outlet and is made of flexible materials, so that the contraction air bag is heated to expand towards one side of the air outlet when working; the deformation membrane is a component of the pipe wall of the air outlet and is abutted against one end, close to the air outlet, of the contraction air bag, the deformation membrane is made of an elastic material and can be controlled by the expanded contraction air bag to protrude towards one side of the air outlet when in work, the deformation membrane is free from overlapping and crossing with a connecting port of the vent pipe 11 and the air outlet, and the deformation membrane has a tendency of being flat with the pipe wall of the air outlet under the action of no external force; according to the design, when the heat of the high-temperature waste gas is not completely transferred to the cold water, the shrinkage air bag is heated and expanded, the deformation membrane is controlled to protrude towards one side of the air outlet, the inner diameter of the air outlet is reduced or closed, the high-temperature waste gas is reduced in outflow or cannot circulate, and heat transfer can be continuously carried out on the cold water; after most of heat in the high-temperature waste gas is transferred to cold water, the temperature of the waste gas is lowered, the shrinkage air bag is recovered to the initial state, the deformation membrane loses the supporting effect of the shrinkage air bag and is recovered to the free state, the air outlet is opened, and the waste gas which finishes heat transfer flows out of the air outlet and enters the dust removal box 2; the valve is used for controlling the flow of exhaust gas, and the exhaust gas is prevented from being discharged without being cooled to enter the dust removal box 2 to damage the device in the dust removal box 2, so that the service life is influenced, and the cost is increased.
The dust removal box 2 includes a filter chamber 21, an electrostatic dust removal chamber 22, and a drying belt 23 to remove large particulate matters and small particulate dusts and the like in the high temperature exhaust gas, which can be adsorbed. The waste gas is discharged from the air outlet of the heat treatment box 1, and then sequentially passes through the filter chamber 21, the drying belt 23 and the electrostatic dust removal chamber 22 and is discharged out of the dust removal box 2.
Wherein, a filter screen 211, a water curtain generator 212 and a water tank 213 are arranged in the filter chamber 21; the right end of the filter chamber 21 is communicated with the air outlet of the heat treatment box 1, the filter screens 211 are two in number, are fixedly arranged at two sides of the filter chamber 21 and cover the passing surface of the waste gas in the filter chamber, so that the waste gas must pass through the filter screens 211, and the filter screens 211 are used for filtering for multiple times, so that large particulate matters in the high-temperature waste gas can be adsorbed and removed thoroughly;
the two filter screens 211 form a filter chamber, the water tank 213 is fixedly arranged at the lower end of the filter chamber, and the water curtain generator 212 is fixedly arranged at the upper end of the filter chamber; a guide plate 216 and a negative plate 214 are fixedly arranged in the water tank 213, the guide plate 216 is formed by sealing and connecting two rigid plates, the guide plate 216 is in sealing and connecting with the lower bottom surface of the water tank 213, so that a sealed triangular cavity is built between the guide plate 216 and the lower bottom surface of the water tank 213, wastewater cannot flow in during operation, the negative plate 214 is fixedly arranged in the triangular cavity, the guide plate 216 is made of a conductive material, the upper end of the negative plate 214 is abutted against the guide plate 216, and negative ions are continuously provided when the negative plate 214 is electrified, so that the upper end of the guide plate 216 is always provided with negative electricity; in addition, a waste water outlet is formed in the inner wall of one side of the water tank 213, the waste water outlet is fixedly connected with a siphon 215 and is used for discharging waste water with large particle pollutants, and the water level in the water tank 213 needs to be higher than that of the waste water on the outer side during water discharging; the water tank 213 and the chamber wall of the filter chamber 21 are both made of insulating materials or the surfaces are covered with insulating coatings;
the water curtain generator 212 comprises a motor, a spray head 2121, a rotating rod 2123 and a negative ion water generator 2122, wherein the motor is externally arranged at the upper end of the filtering chamber, the rotating rod 2123 is made of rigid material, the rotating rod 2123 is connected with the motor and the spray head 2121, the rotating rod 2123 is in rotating connection with the motor and is fixedly connected with the spray head 2121, and the motor controls the rotating rod 2123 to rotate so as to indirectly control the spray head 2121 to rotate when in work; the nozzle 2121 is connected with a water pipeline, when the device works, the nozzle 2121 starts to spray water, the rotating rod 2123 drives the nozzle 2121 to rotate, so that clean water sprayed from the nozzle 2121 can be sprayed on the filter screens 211 on two sides in an all-around manner, a cleaning effect is achieved, and the filter screens 211 are prevented from being blocked due to excessive large-particle substances adsorbed; the anion water generator 2122 is fixedly connected to the upper end of the filtering chamber and is connected with an external voltage, the anion water generator 2122 is connected with a water pump, external clear water enters the anion water generator 2122 under the control of the water pump, hydroxyl ions and hydrogen ions are generated by electrolysis in the anion water generator 2122, the anion water generator 2122 is provided with a high-voltage electric field, the hydrogen ions are subjected to reduction reaction under the action of the high-voltage electric field, the hydroxyl ions exist in the clear water and enter the spray head 2121 through a water pipeline to be sprayed out, and water sprayed out of the spray head 2121 is water with anions; the clear water with a large amount of negative ions can be subjected to repulsive force from the upper end of the guide plate 216 with negative electricity in the falling process, and the repulsive force can prevent the phenomenon that the gap is larger and larger at the lower end of the chamber because the speed is overlarge due to the influence of gravity acceleration when water drops fall; when the device works, the rotating rod 2123 drives the spray head 2121 to vertically spray water downwards, the negative ion water generator 2122 and the guide plate 216 are matched to generate an uninterrupted water curtain, the space between the two filter screens 211 is isolated by the water curtain, waste gas can pass through the water curtain manufactured by the water curtain generator 212 when passing through the filter chamber 21, and at the moment, part of large granular substances in the waste gas can be washed away;
it should be noted that in this embodiment, the influence of the repulsive force of the upper end of the flow guide plate 216 on the clean water with negative ions is smaller than the influence of gravity on the fall of the clean water, so that the water drops with negative electricity can descend at a reduced speed, and this purpose can be achieved by controlling the power of the negative plate 214 and the flow rate of the spray head 2121;
in addition, a water outlet is formed in the side wall of the water tank 213, the water outlet is connected with a siphon 215, and the siphon 215 is an inverted U-shaped pipe; one end of the siphon tube 215 extending into the water tank 213 is close to the bottom of the water tank 213, and the highest end of the siphon tube 215 is higher than the bottom of the water tank 213, so that the water tank 213 can temporarily store part of water in an initial state; the siphon tube 215 is used for discharging the waste water generated in the filtering chamber 21 to the outside of the apparatus through siphon, and the water level outside the siphon tube 215 is lower than the water level inside the water tank 213 when in operation. If the siphon tube 215 is not provided, the water and dust can be discharged by using a water outlet which is arranged at the lower end of the side wall of the water tank 213 and is conventional in the prior art; however, since the water outlet directly discharges water, at the beginning of the water curtain formation, the guide plate 216 only has less water, and the guide plate 216 is negatively charged, dust in the water falls on the guide plate 216 and then is negatively charged, so that part of the dust is repelled by the electric property opposite to each other to eliminate the adhesion of the water to the dust, and flies off the guide plate 216 and is adhered to the side wall of the water tank 213 or even the inner wall of the filtering chamber; the siphon is used, so that the negative ion water generator 2122 does not work before the operation starts, and after the water on the flow guide plate 216 starts to accumulate, the negative ion water generator 2122 works until the liquid level exceeds the siphon 215, and the waste gas starts to be introduced into the filter chamber 21; at the moment, the dust in the water is greatly resisted by the water, and is difficult to separate from the range of the guide plate 216 compared with the arrangement mode of the water outlet, so that the dust is well discharged; after the liquid level on the guide plate 216 exceeds the siphon 215, dust carried by the water enters the siphon 215 and is discharged out of the water tank 213; because water is fluid and has viscous force, when water siphons in, dust can be pulled to move together, and when the water quantity on the guide plate 216 is small, the function of increasing the limit effect on the flying-off of the dust can also be achieved.
The drying belt 23 is fixedly arranged between the filter chamber 21 and the electrostatic precipitation chamber 22 and is used for removing moisture brought by the exhaust gas from the filter chamber 21, and the exhaust gas enters the electrostatic precipitation chamber 22 after passing through the drying belt 23; the drying belt 23 is filled with a water-absorbing medium, and the material of the water-absorbing medium and the specific structure of the drying belt 23 are all common means of those skilled in the art, and are not described herein.
The electrostatic dust removal chamber 22 comprises a dust collection box 221 and an electric field generator 223, the electric field generator 223 is fixedly arranged at the upper end of the electrostatic dust removal chamber 22, when waste gas enters the electrostatic dust removal chamber 22, the electric field generator 223 starts to work to generate a high-voltage electrostatic field, the waste gas is electrically separated when passing through the high-voltage electrostatic field, dust particles are combined with negative ions and then are charged with negative electricity, and the dust particles tend to discharge on the surface of an anode to be deposited; the dust collecting box 221 is arranged at the lower end of the electrostatic dust removing chamber 22, the dust collecting plate 222 is fixedly arranged on the lower bottom surface of the dust collecting box 221, and the dust collecting plate 222 is electrified to be an anode plate and can adsorb tiny particles with negative electricity; the dust box 221 is detachably connected to the electrostatic precipitator 22, and after the device filters the exhaust gas, the dust box 221 can be detached to clean the tiny particles adsorbed on the dust collecting plate 222, so as to prevent the accumulated dust particles from affecting the adsorption of the anode to the negative dust particles. In order to shorten the drawing, the electrostatic precipitation chamber 22 and the filtering chamber 21 are shown to be closer in the drawings 1 and 2 in the specification, and in practical application, the electrostatic precipitation chamber 22 is far away from the filtering chamber 21 so as to avoid the interference of the electric field generator 223 on the water curtain flow in the filtering chamber 21.
The second concrete embodiment: on the basis of the first specific embodiment, please refer to fig. 1-6, the apparatus further includes a low-temperature plasma reaction chamber 3, an exhaust gas inlet of the low-temperature plasma reaction chamber 3 is connected to an exhaust gas outlet of the dust removal chamber 2, a high-voltage electric field is disposed inside the low-temperature plasma reaction chamber 3, the exhaust gas is discharged under the action of the high-voltage electric field to generate low-temperature plasma, at this time, most harmful gas components in the exhaust gas are activated into active particles in the low-temperature plasma, and are easy to undergo an oxidation-reduction reaction with oxygen or an additional catalyst entering the low-temperature plasma reaction chamber together, so as to achieve the purpose of removing the harmful gas in the exhaust gas; the side wall of the low-temperature plasma reaction box 3 is provided with a gas outlet 31, and the treated waste gas is discharged from the gas outlet 31.
The third concrete example: different from the first embodiment, the electric field generator 223 is vertically disposed on the inner wall of the electrostatic precipitation chamber 22 and covers the passing surface of the exhaust gas, at this time, the exhaust gas entering the electrostatic precipitation chamber 22 through the drying belt 23 will pass through the electric field generator 223 first, and at this time, the electric field generator 223 has a larger range of action, a high-frequency electric field is provided in the vertical direction in the electrostatic precipitation chamber 22, so that more dust particles in the exhaust gas are charged negatively, and the dust particles charged negatively are attracted to the dust collection plate 222 with the anode and deposited on the dust collection plate 222; the device can more completely discharge the dust particles through deposition, thereby avoiding the phenomenon that the electric field generator 223 is arranged at the upper end and is close to one side of the dust collection box 221, the electric field is weakened to cause the dust particles to be charged incompletely, so that part of the dust particles can not be deposited, and improving the dust removal capacity of the electrostatic dust removal chamber 22.
The working principle is as follows: when the device works, high-temperature industrial waste gas to be treated enters the heat treatment tank 1 through the air inlet, and at the moment, cold water fills the heat treatment tank 1 from bottom to top through the cold water inlet 12; high temperature industrial waste gas moves toward the gas outlet from last down through many breather pipes 11, and high temperature waste gas is to the breather pipe 11 transfer heat that has good heat conductivity among the motion process, makes the pipeline outer wall temperature of breather pipe 11 uprise to with the cold water heating in the thermal treatment case 1, cold water becomes hot water after receiving the even heating of many breather pipes 11, hot water flows out from hot water outlet 13 and uses the hot water field of needs.
When the waste gas is not completely cooled, the shrinkage air bag in the valve arranged in the gas inlet is heated to expand, the deformation film is controlled to protrude towards one side of the gas outlet, the inner diameter of the gas outlet is reduced or closed, the outflow of the high-temperature waste gas is reduced or the high-temperature waste gas cannot circulate, and heat transfer can be continuously carried out on cold water; after the waste gas cools off, the shrink gasbag resumes initial state, and the deformation membrane loses the supporting role of shrink gasbag and resumes free state, and the gas outlet is opened, and the waste gas that accomplishes the heat transfer this moment flows out from the gas outlet and gets into the dust removal case.
Waste gas firstly enters the filter chamber 21 after entering the dust removal box 2, the spray head 2121 sprays water flow towards the guide plate 216, the negative ion water generator 2122 and the negative plate 214 are started to generate a water curtain, the temperature of the waste gas is not easy to vaporize water in the water curtain after being cooled, and the filter effect of the water curtain on particles in the waste gas is avoided being influenced. The industrial waste gas is cleaned by the two layers of filter screens 211 and the water curtain to remove large particle substances adsorbed on the gas, and the large particle substances enter the water tank 213 along with the water flow and are discharged out of the device through the siphon 215.
After the industrial waste gas leaves the filter chamber 21, the industrial waste gas contacts the drying belt 23, at this time, the negative ion water generator 2122 is turned off, the rotating rod 2123 in the filter chamber 21 controls the spray head 2121 to rotate, so that the clean water sprayed from the spray head 2121 can be sprayed on the filter screens 211 at two sides in an all-around manner, large particles attached to the filter screens 211 are effectively washed away, and the sewage with large particles flows into the water tank 213 after the cleaning is completed, and is finally discharged through the siphon 215 due to pressure difference.
The industrial waste gas is passed through a drying belt 23 to remove moisture therefrom, and then is introduced into an electrostatic precipitation chamber 22.
The electric field generator 223 and the dust collecting plate 222 are turned on to generate a high voltage electrostatic field in the electrostatic precipitation chamber 22, the industrial waste gas is electrically separated, the dust particles in the industrial waste gas and the negative ions are combined to be charged negatively, the negatively charged dust particles are attracted to the dust collecting plate 222 with the anode and are deposited on the dust collecting plate 222, and after the work is finished, the dust collecting box 221 can be detached to clean the tiny particles adsorbed on the dust collecting plate 222, so that the adsorption effect of the anode on the negatively charged dust particles is prevented from being influenced by too much accumulated dust particles.
The industrial waste gas is treated by the filter chamber 21 to remove large particulate matter and small particulate dust particles originally adsorbed on the gas,introducing the treated industrial waste gas into the low-temperature plasma reaction box 3, discharging the industrial waste gas under the action of a high-voltage electric field in the low-temperature plasma reaction box 3 to generate low-temperature plasma, wherein most harmful gas components such as H 2 S、CS 2 Etc. are excited into active particles and easily oxidized into H 2 O、CO 2 And the like, can not generate substances polluting air, and achieve the aim of removing harmful gases in the waste gas; the industrial waste gas treated at this time does not contain large particulate matter, small particulate dust and harmful gases and can be discharged through the gas outlet 31.
Claims (10)
1. A high temperature exhaust treatment unit, characterized by: comprises a dust removal box (2);
a filter chamber (21) is arranged in the dust removing box (2);
a filter screen (211), a water curtain generator (212) and a water tank (213) are arranged in the filter chamber (21); the right end of the filter chamber (21) is provided with an exhaust gas inlet; the filter screen (211) is fixedly arranged in the filter chamber (21) and covers the passing surface of the waste gas in the filter chamber;
the water tank (213) is fixedly arranged at the lower end of the filtering chamber (21) and is communicated with the filtering chamber (21); the inner wall of the water tank (213) is made of insulating materials or the surface of the water tank is covered with an insulating coating; a guide plate (216) and a negative plate (214) are fixedly arranged in the water tank (213); the guide plate (216) is made of a conductive material, and the guide plate (216) is hermetically connected with the bottom of the water tank (213) to form a cavity; the negative plate (214) is arranged in the cavity, and the flow guide plate (216) is charged after the negative plate (214) is electrified; a waste water outlet is arranged on the inner wall of one side of the water tank (213);
the water curtain generator (212) is fixedly arranged at the upper end of the filtering chamber, the water curtain generator (212) is used for spraying water flow to form a water curtain, and the spraying direction of the water flow has the capability of rotating so that the water flow is contacted with the filtering net (211); the jetting port of the water flow is contacted with a negative ion water generator (2122) so as to make the water curtain carry negative charges; the water curtain is ejected toward the deflector (216) while filtering the exhaust gas;
the influence of the repulsion force of the guide plate (216) on the clean water with the negative ions is smaller than the gravity influence of the falling of the clean water, so that the water flow is decelerated and falls to form a continuous water curtain;
a drying belt (23) is arranged in the filtering chamber (21), and the drying belt (23) is close to the waste gas outlet and is positioned behind the water curtain to absorb moisture in the waste gas after passing through the water curtain.
2. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the guide plate (216) is formed by sealing and connecting two inclined rigid plates, and the guide plate (216) is in sealing connection with the lower bottom surface of the water tank (213) so that a sealed triangular cavity is built between the guide plate (216) and the lower bottom surface of the water tank (213).
3. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the waste water outlet is fixedly connected with a siphon (215), and the siphon (215) is an inverted U-shaped pipe; one end of the siphon pipe (215) extending into the water tank (213) is close to the bottom of the water tank (213), and the highest end of the siphon pipe (215) is higher than the bottom surface of the water tank (213); the water level in the water tank (213) is ensured to be higher than the water level of the outside waste water during the water discharge.
4. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the water curtain generator (212) comprises a motor, a spray head (2121), a rotating rod (2123) and a negative ion water generator (2122); the motor is externally arranged at the upper end of the filtering chamber, the rotating rod (2123) is made of rigid materials, the rotating rod (2123) is connected with the motor and the spray head (2121), the rotating rod (2123) is in rotating connection with the motor and is fixedly connected with the spray head (2121), and the motor controls the rotating rod (2123) to rotate so as to indirectly control the spray head (2121) to rotate in all directions; the spray head (2121) is connected with a water pipeline; the anion water generator (2122) is fixedly connected to the upper end of the filtering chamber and is connected with an external voltage, the anion water generator (2122) is connected with a water pump, and high-frequency voltage is provided in the anion water generator (2122) to enable the entering water to be provided with anions; the anion water generator (2122) is connected with the spray head (2121) through a water pipeline.
5. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the dust removal box (2) comprises an electrostatic dust removal chamber (22), the electrostatic dust removal chamber (22) is fixedly arranged on one side, away from the filter chamber (21), of the drying belt (23), the electrostatic dust removal chamber (22) comprises a dust collection box (221) and an electric field generator (223), the electric field generator (223) is fixedly arranged at the upper end of the electrostatic dust removal chamber (22), and a high-voltage electrostatic field is provided to enable small-particle dust particles to be charged negatively during working; the dust collection box (221) is detachably connected to the lower end of the electrostatic dust removal chamber (22), a dust collection plate (222) is fixedly arranged on the lower bottom surface of the dust collection box (221), and the dust collection plate (222) is electrified to be an anode plate so as to adsorb particles with negative electricity.
6. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the dust removal box (2) comprises an electrostatic dust removal chamber (22), the electrostatic dust removal chamber (22) is fixedly arranged on one side, away from the filter chamber (21), of the drying belt (23), the electrostatic dust removal chamber (22) comprises a dust collection box (221) and an electric field generator (223), the electric field generator (223) is vertically arranged on the inner wall of the electrostatic dust removal chamber (22) and covers the passing surface of waste gas, and a high-voltage electrostatic field is provided during working so that small-particle dust particles are charged negatively; the dust collection box (221) is detachably connected to the lower end of the electrostatic dust removal chamber (22), a dust collection plate (222) is fixedly arranged on the lower bottom surface of the dust collection box (221), and the dust collection plate (222) is electrified to be an anode plate so as to adsorb particles with negative electricity.
7. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the high-temperature industrial waste gas treatment unit comprises a heat treatment box (1); the heat treatment box (1) comprises a vent pipe (11), a cold water inlet (12) and a hot water outlet (13), wherein the inside of the heat treatment box (1) is a closed space, the upper end surface of the heat treatment box (1) is provided with an air inlet for introducing high-temperature waste gas, and the lower end surface is provided with an air outlet for discharging cooled waste gas; the upper end surface of the heat treatment box (1) is provided with a hot water outlet (13), and the bottom surface is provided with a cold water inlet (12); a vent pipe (11) is fixedly arranged between the air inlet and the air outlet, and the vent pipe (11) has heat conductivity; the number of the vent pipes (11) is multiple, and the vent pipes (11) form multiple rows and multiple columns which are uniformly arranged in the heat treatment box (1) in an array manner.
8. A high temperature industrial waste gas treatment unit according to claim 4, characterized in that: a valve is arranged in the air outlet and comprises a contraction air bag and a deformation membrane, the contraction air bag is fixedly arranged on the inner wall of the air pipe (11) communicated with the air outlet and is made of flexible materials, so that the contraction air bag is heated to expand towards one side of the air outlet when in work; the deformation membrane is a component of the pipe wall of the air outlet and is abutted against one end of the contraction air bag close to the air outlet, the deformation membrane is made of an elastic material and protrudes towards one side of the air outlet when being controlled by the expanded contraction air bag; the deformation film is not overlapped and crossed with a connecting port of the vent pipe (11) and the air outlet in a free state, namely the deformation film has a tendency of being flat with the wall of the air outlet under the action of no external force.
9. A high temperature industrial waste gas treatment unit according to claim 1, characterized in that: the high-temperature industrial waste gas treatment unit comprises a low-temperature plasma reaction box (3), a waste gas inlet of the low-temperature plasma reaction box (3) is connected with a waste gas outlet of the dust removal box (2), a high-voltage electric field is arranged inside the low-temperature plasma reaction box (3) to activate waste gas as active particles, and the active particles are easy to undergo redox reaction to form harmless substances.
10. A method for treating a high-temperature industrial waste gas treatment unit according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
s201, during work, waste gas enters a dust removal box (2), and is filtered to remove part of large particulate matters after passing through a filter screen (211) in a filter chamber (21);
s202, enabling the waste gas to enter an inner cavity of a filter chamber (21) after passing through a filter screen (211), enabling a water curtain generator (212) to spray water flow towards a guide plate (216), starting an anion water generator (2122) and a negative plate (214) to generate a water curtain, cleaning the waste gas by the water curtain, and filtering most of large particle substances in the waste gas again;
s203, enabling the waste gas to enter a drying belt (23) after passing through a filter screen (211) and a water curtain to remove moisture brought by the waste gas after passing through the water curtain;
s204, after the waste gas leaves, the jet direction of the water flow of the water curtain generator (212) rotates, so that the water flow filter screen (211) is cleaned in all directions;
s205, sewage with large granular substances generated in the process is accumulated at the bottom of the water tank (213) and is discharged out of the device through a siphon (215).
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| CN202210567959.8A CN114932014A (en) | 2022-05-24 | 2022-05-24 | High-temperature waste gas treatment unit and treatment method |
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| CN202210567959.8A CN114932014A (en) | 2022-05-24 | 2022-05-24 | High-temperature waste gas treatment unit and treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103586131A (en) * | 2012-10-17 | 2014-02-19 | 江苏大学 | Device and method for purifying indoor air through electrostatic atomization |
| CN110841800A (en) * | 2019-10-29 | 2020-02-28 | 神华粤电珠海港煤炭码头有限责任公司 | Electrostatic dust collection device |
| CN210206427U (en) * | 2019-07-05 | 2020-03-31 | 马梓豪 | Industrial waste gas treatment device |
| CN113375219A (en) * | 2021-06-30 | 2021-09-10 | 浙江森拉特暖通设备有限公司 | Temperature-variable indoor hot water heating radiator |
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2022
- 2022-05-24 CN CN202210567959.8A patent/CN114932014A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586131A (en) * | 2012-10-17 | 2014-02-19 | 江苏大学 | Device and method for purifying indoor air through electrostatic atomization |
| CN210206427U (en) * | 2019-07-05 | 2020-03-31 | 马梓豪 | Industrial waste gas treatment device |
| CN110841800A (en) * | 2019-10-29 | 2020-02-28 | 神华粤电珠海港煤炭码头有限责任公司 | Electrostatic dust collection device |
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