CN112879920B - Device and method for removing dioxin in hazardous waste incineration flue gas - Google Patents
Device and method for removing dioxin in hazardous waste incineration flue gas Download PDFInfo
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- CN112879920B CN112879920B CN202110036198.9A CN202110036198A CN112879920B CN 112879920 B CN112879920 B CN 112879920B CN 202110036198 A CN202110036198 A CN 202110036198A CN 112879920 B CN112879920 B CN 112879920B
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- tail gas
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- dioxin
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- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003546 flue gas Substances 0.000 title claims abstract description 20
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 14
- 238000004056 waste incineration Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 107
- 239000000428 dust Substances 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 239000004927 clay Substances 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000110 cooling liquid Substances 0.000 claims description 28
- 238000002955 isolation Methods 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 11
- 238000000197 pyrolysis Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 238000003795 desorption Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 28
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 239000012809 cooling fluid Substances 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/104—High temperature resistant (ceramic) type
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The application relates to a device and a method for removing dioxin in hazardous waste incineration flue gas, comprising a device main body, a high-temperature tail gas conveying plate arranged in the device main body and a dust removing mechanism connected to the device main body, wherein a plurality of first guide plates and a plurality of second guide plates are connected to the inner wall of the device main body, the plurality of first guide plates and the plurality of second guide plates are distributed up and down alternately, and a plurality of dioxin removing mechanisms are arranged in the device main body. According to the device and the method for removing dioxin in the hazardous waste incineration flue gas, activated clay is adopted to replace activated carbon, and the activated clay and a corresponding cooling and guiding system are used for sufficiently and safely removing dioxin from high-temperature flue gas, so that the burning of the activated carbon caused by cooling faults of high-temperature tail gas can be prevented, the burning of the dust collection cloth bag caused by burning activated carbon can be effectively prevented, the stable operation of the incineration system is effectively ensured, and abnormal shutdown of the system caused by spontaneous combustion is avoided.
Description
Technical Field
The application belongs to the technical field of hazardous waste harmless treatment, and particularly relates to a device and a method for removing dioxin in hazardous waste incineration flue gas.
Background
With the acceleration of urban steps and the improvement of living standard of people, the domestic garbage amount is greatly increased, and the harmless treatment of garbage becomes a necessary choice. At present, a domestic garbage disposal mode is a landfill mode, and is denied in most areas due to environmental pollution. The fly ash produced by the garbage incineration method is treated as follows: firstly, the fly ash is added with chelating agent for solidification treatment and then is buried, and secondly, the harmful substances in the fly ash are adsorbed and treated by the activated carbon and then are industrially used, such as brick making, ceramic making and the like. The existing garbage incineration technology and process flow have the environmental protection problem which cannot be thoroughly solved, and the damage to the environment and the life of residents is caused. A certain amount of dioxin exists in the flue gas; harmful heavy metals and dioxin exist in the fly ash, are dangerous wastes, and cannot be recycled.
In the prior art, the activated carbon is adopted to remove dioxin in hazardous waste incineration flue gas, the activated carbon combusts when the temperature exceeds 500 ℃ because the activated carbon combusts at high temperature, and the cloth bag in a cloth bag dust remover used later can be directly burned once the activated carbon combusts, although the high-temperature tail gas can be rapidly cooled in the prior art, once the cooling system is failed or the operation of workers is wrong, the whole device is irreversibly damaged, the safety accident is easily caused, the serious dioxin atmospheric pollution event is caused, and the ecological environment is a potential serious threat.
Disclosure of Invention
The application aims to solve the problems and provide a device and a method for removing dioxin in hazardous waste incineration flue gas, which are simple in structure and reasonable in design.
The application realizes the above purpose through the following technical scheme:
the device comprises a device main body, a high-temperature tail gas conveying plate arranged in the device main body and a dust removing mechanism connected to the device main body, wherein a plurality of first guide plates and a plurality of second guide plates are connected to the inner wall of the device main body, the plurality of first guide plates and the plurality of second guide plates are distributed up and down alternately, a plurality of dioxin removing mechanisms are arranged in the device main body, the plurality of dioxin removing mechanisms are uniformly distributed between the first guide plates and the second guide plates, a first cooling fluid flowing cavity is arranged in the wall of the device main body, a high-temperature tail gas conveying channel is arranged in the high-temperature tail gas conveying plate, a second cooling fluid flowing cavity is arranged in the wall of the high-temperature tail gas conveying plate, a plurality of cooling vent holes are formed in the upper end of the high-temperature tail gas conveying plate, the cooling vent holes are communicated with the high-temperature tail gas conveying channel, and the first cooling fluid flowing cavity is communicated with the second cooling fluid flowing cavity;
the dioxin removing mechanism comprises a middle rotating shaft movably connected to the inner wall of the device main body, a ventilation isolation cylinder sleeved on the middle rotating shaft, and a plurality of inner connecting partition plates connected between the middle rotating shaft and the ventilation isolation cylinder, wherein activated clay is filled in a space between the inner connecting partition plates and the ventilation isolation cylinder.
As a further optimization scheme of the application, a cooling air outlet is formed in one side wall of the device main body, a connecting pipeline is connected to the cooling air outlet, the device main body is connected with the dust removing mechanism through the connecting pipeline, and a temperature sensor is arranged on the connecting pipeline.
As a further optimization scheme of the application, the dust removing mechanism comprises a shell and a plurality of dust removing cloth bags connected to the inner wall of the shell, the upper end of the shell is provided with a tail gas outlet, the lower end of the shell is provided with a plurality of detachable dust outlet matched with the dust removing cloth bags, and the dust removing cloth bags are filled with activated clay.
As a further optimization scheme of the application, the first guide plate and the second guide plate are parallel, the included angle between the first guide plate and the horizontal plane is 10 degrees to 30 degrees, the first guide plate is connected to the inner wall of the other side of the device main body, and the second guide plate is connected to the inner wall of one side of the device main body.
As a further optimization scheme of the application, a tail gas circulation gap is arranged between the first guide plate and the inner wall of one side of the device main body, and a tail gas circulation gap is arranged between the second guide plate and the inner wall of the other side of the device main body.
As a further optimization scheme of the application, a removal chamber is arranged in the device main body, and the first guide plate, the second guide plate and the dioxin removal mechanism are all positioned in the removal chamber.
As a further optimization scheme of the application, the cooling air outlet and the cooling vent hole are both round table-shaped perforations.
The method for removing dioxin in the flue gas by adopting the device comprises the following steps:
s1, carrying out pyrolysis combustion on materials in a pyrolysis furnace, introducing high-temperature tail gas generated by pyrolysis combustion into a high-temperature tail gas conveying channel in a high-temperature tail gas conveying plate, simultaneously introducing cooling liquid into a second cooling liquid flowing cavity, flowing the cooling liquid through a first cooling liquid flowing cavity and a second cooling liquid flowing cavity, and cooling the high-temperature tail gas;
s2, enabling high-temperature tail gas to flow into a removal cavity from a cooling vent hole, and fully contacting with a dioxin removal mechanism under the flow guiding action of a first flow guiding plate and a second flow guiding plate, wherein activated clay in the dioxin removal mechanism fully removes dioxin in the tail gas;
s3, fully removing dioxin from the tail gas, flowing into the dust removing mechanism through the cooling air outlet, detecting the temperature of the tail gas through the temperature sensor when the tail gas flows into the dust removing mechanism, and transmitting a high-temperature signal to the control end if the temperature of the tail gas is not reduced to the standard temperature;
s4, filtering the impurities in the tail gas flowing into the dust removing mechanism after the tail gas is sufficiently filtered by the dust removing cloth bag, discharging the tail gas reaching the standard through a tail gas outlet, and collecting and treating the impurities from the detachable dust outlet.
The application has the beneficial effects that:
1) According to the application, activated clay is adopted to replace activated carbon, and dioxin is fully and safely removed from high-temperature flue gas through the activated clay and a corresponding cooling and flow guiding system, so that the burning of the activated carbon caused by cooling failure of high-temperature tail gas can be prevented, the burning of a dust removing cloth bag caused by the burned activated carbon can be effectively prevented, the stable operation of an incineration system is effectively ensured, and abnormal shutdown of the system caused by spontaneous combustion is avoided;
2) When the high-temperature tail gas is treated, the high-temperature gas flows into the cooling vent hole from the high-temperature tail gas conveying channel, at the moment, the high-temperature smoke flows into the removal cavity after passing through the cooling liquid in the second cooling liquid flow cavity, at the moment, the high-temperature smoke flows between the first flow guide plate and the second flow guide plate under the flow guide effect of the first flow guide plate, meanwhile, the tail gas flows into the ventilation isolation cylinder, when the tail gas is fully contacted with the activated clay, the inner isolation plate is blown, the whole dioxin removal mechanism is driven to rotate through the rotation of the inner isolation plate, the activated clay in the high-temperature tail gas is enabled to be fully contacted with the tail gas when the high-temperature tail gas passes through the flow guide plates and the removal effect of the dioxin removal mechanism, when the high-temperature tail gas is discharged into the dust removal mechanism from the cooling gas outlet, the continuously circulated tail gas in the first cooling liquid flow cavity and the internal temperature of the removal cavity are cooled, and the tail gas in the dust removal cavity are fully filtered in the dust removal mechanism, impurities in the tail gas can be effectively filtered when the tail gas passes through the temperature sensor, and the tail gas reaches the temperature sensor, the tail gas can be discharged from the outlet after reaching the standard, and the temperature sensor can be more conveniently and quickly controlled to cause the damage to a dust collector when the temperature sensor is not reached, and the dust collector is more safe and the dust is not convenient to be controlled;
3) The application has simple structure, high stability, reasonable design and convenient realization.
Drawings
FIG. 1 is a flow chart of the present application;
FIG. 2 is a schematic view of the overall structure of the present application;
fig. 3 is a schematic structural view of the dioxin removal mechanism of the present application.
In the figure: 1. a first device body; 101. the first coolant flowing through the chamber; 102. removing the chamber; 103. a first deflector; 104. a second deflector; 105. cooling air outlet; 2. a high temperature tail gas conveying plate; 201. a high temperature tail gas delivery passage; 202. cooling vent holes; 203. the second coolant flowing through the chamber; 3. a dioxin removing mechanism; 301. a middle rotating shaft; 302. a ventilation isolation cylinder; 303. an inner connecting partition; 304. activated clay; 4. a temperature sensor; 5. a dust removing mechanism; 501. a dust removing cloth bag; 502. a tail gas outlet; 503. the dust outlet can be detached.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
Example 1
As shown in fig. 1-2, a device for removing dioxin in hazardous waste incineration flue gas comprises a device main body 1, a high-temperature tail gas conveying plate 2 arranged in the device main body 1 and a dust removing mechanism 5 connected to the device main body 1, wherein a plurality of first guide plates 103 and a plurality of second guide plates 104 are connected to the inner wall of the device main body 1, the plurality of first guide plates 103 and the plurality of second guide plates 104 are alternately distributed up and down, a plurality of dioxin removing mechanisms 3 are arranged in the device main body 1, the plurality of dioxin removing mechanisms 3 are uniformly distributed between the first guide plates 103 and the second guide plates 104, a first cooling liquid flowing cavity 101 is arranged in the wall of the device main body 1, a high-temperature tail gas conveying channel 201 is arranged in the high-temperature tail gas conveying plate 2, a second cooling liquid flowing cavity 203 is arranged in the wall of the high-temperature tail gas conveying plate 2, a plurality of cooling vent holes 202 are arranged at the upper end of the high-temperature tail gas conveying plate 2, the cooling vent holes 202 are communicated with the high-temperature tail gas conveying channel 201, and the first cooling liquid flowing cavity 101 and the second cooling liquid flowing cavity 203 are communicated;
the dioxin removing mechanism 3 comprises a middle shaft 301 movably connected to the inner wall of the device main body 1, a ventilation isolation cylinder 302 sleeved on the middle shaft 301, and a plurality of inner connecting partition plates 303 connected between the middle shaft 301 and the ventilation isolation cylinder 302, wherein the space between the inner connecting partition plates 303 and the ventilation isolation cylinder 302 is filled with activated clay 304.
A cooling air outlet 105 is formed in one side wall of the device main body 1, a connecting pipeline is connected to the cooling air outlet 105, the device main body 1 is connected with the dust removing mechanism 5 through the connecting pipeline, and a temperature sensor 4 is arranged on the connecting pipeline. The temperature sensor 4 is used for detecting whether the temperature of the tail gas entering the dust removing mechanism 5 reaches the standard or not, and if the temperature does not reach the standard, information feedback is rapidly carried out to the control end, so that accidents can be effectively prevented from happening.
The dust removing mechanism 5 comprises a shell and a plurality of dust removing cloth bags 501 connected to the inner wall of the shell, an exhaust outlet 502 is arranged at the upper end of the shell, a plurality of detachable dust outlets 503 matched with the dust removing cloth bags 501 are arranged at the lower end of the shell, and activated clay 304 is filled in the dust removing cloth bags 501. The incombustibility and corrosion resistance of the activated clay 304 are the same as those of the activated carbon in adsorptivity and other physical characteristics, and the activated clay can be used for removing dioxin in hazardous waste incineration flue gas at high temperature instead of the activated carbon, so that the activated carbon can be effectively prevented from being burnt by high-temperature tail gas.
The first guide plate 103 is parallel to the second guide plate 104, an included angle between the first guide plate 103 and the horizontal plane is 10 degrees to 30 degrees, the first guide plate 103 is connected to the inner wall of the other side of the device main body 1, and the second guide plate 104 is connected to the inner wall of one side of the device main body 1; a tail gas circulation gap is arranged between the first guide plate 103 and the inner wall of one side of the device main body 1, and a tail gas circulation gap is arranged between the second guide plate 104 and the inner wall of the other side of the device main body 1; the device body 1 is internally provided with a removal chamber 102, and the first guide plate 103, the second guide plate 104 and the dioxin removal mechanism 3 are all positioned in the removal chamber 102. The tail gas always circulates along the channel with the dioxin removing mechanism 3 under the flow guiding effect of the flow guiding plate, and after a long-time reaction, the dioxin in the tail gas can be sufficiently removed.
Both the cooling air outlet 105 and the cooling vent 202 are truncated cone shaped perforations. The gas circulation direction of the round table-shaped perforation is that high-temperature gas flows from the big round mouth end to the small round mouth end, the diameter of the big round mouth end is 8-10 times of the diameter of the small round mouth end, and the round table-shaped perforation is arranged in the shape, so that the high-temperature tail gas can be effectively and fully and effectively exchanged with the cooling liquid when passing through the perforation, and the cooling liquid can be enabled to replace the heat in the high-temperature tail gas in the circulation cavity and enable the high-temperature tail gas to be cooled.
As shown in fig. 3, the method for removing dioxin in flue gas by adopting the device comprises the following steps:
s1, carrying out pyrolysis combustion on materials in a pyrolysis furnace, introducing high-temperature tail gas generated by pyrolysis combustion into a high-temperature tail gas conveying channel 201 in a high-temperature tail gas conveying plate 2, simultaneously introducing cooling liquid into a second cooling liquid flowing cavity 203, flowing the cooling liquid through a first cooling liquid flowing cavity 101 and the second cooling liquid flowing cavity 203, and cooling the high-temperature tail gas;
s2, high-temperature tail gas flows into the removal cavity 102 from the cooling vent hole 202, and fully contacts with the dioxin removal mechanism 3 under the diversion effect of the first diversion plate 103 and the second diversion plate 104, and the activated clay 304 in the dioxin removal mechanism 3 fully removes the dioxin in the tail gas;
s3, enabling the tail gas with dioxin removed fully to flow into the dust removing mechanism 5 through the cooling air outlet 105, detecting the temperature of the tail gas through the temperature sensor 4 when the tail gas flows into the dust removing mechanism 5, and transmitting a high-temperature signal to the control end if the temperature of the tail gas is not reduced to the standard temperature;
step S4, the tail gas flowing into the dust removing mechanism 5 is sufficiently filtered by the dust removing cloth bag 501, then impurities in the tail gas are filtered, the tail gas reaching standards is discharged through the tail gas outlet 502, and the impurities are collected and treated from the detachable dust outlet 503.
When handling high temperature tail gas, high temperature gas flows in cooling air vent 202 from high temperature tail gas conveying passageway 201, this moment high temperature flue gas flows into desorption cavity 102 after the cooling of coolant liquid in the second coolant liquid flow cavity 203, this moment it flows into between first guide plate 103 and second guide plate 104 under the water conservancy diversion effect of first guide plate 103, tail gas flows into ventilating and isolating cylinder 302 simultaneously, can blow inner baffle 303 when carrying out abundant contact with activated clay 304, and drive whole dioxin desorption mechanism 3 through the rotation of inner baffle 303 and rotate, can make activated clay 304 in it carry out more abundant contact with the tail gas when rotating, after the removal effect of high temperature tail gas through a plurality of guide plates and dioxin desorption mechanism 3, the tail gas is discharged into dust removal mechanism 5 from cooling gas outlet 105, the continuous circulation of coolant liquid in the first coolant liquid flow cavity 101 tail gas and the inside temperature of desorption cavity 102 are cooled down, the tail gas carries out abundant filtration in entering dust removal mechanism 5 after the temperature measurement with activated clay 304, can effectively carry out the filtration in the filter cloth bag, can carry out the filter device that can not reach the standard with the temperature sensor, can cause the safety to the high temperature sensor 502 to cause the safety to the high temperature sensor device to be more convenient when the temperature sensor is carried out, can not cause the high temperature sensor device to the temperature sensor 502 to the end of the tail gas to be discharged to the tail gas, can be more convenient to the temperature sensor 501 and the temperature sensor is more convenient to the temperature sensor device to carry out.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (5)
1. The utility model provides a hazardous waste burns desorption device of dioxin in flue gas which characterized in that: the device comprises a device main body (1), a high-temperature tail gas conveying plate (2) arranged in the device main body (1) and a dust removing mechanism (5) connected to the device main body (1), wherein a plurality of first guide plates (103) and a plurality of second guide plates (104) are connected to the inner wall of the device main body (1), the plurality of first guide plates (103) and the plurality of second guide plates (104) are alternately distributed up and down, a plurality of dioxin removing mechanisms (3) are arranged in the device main body (1), the plurality of dioxin removing mechanisms (3) are uniformly distributed between the first guide plates (103) and the second guide plates (104), a first cooling liquid flowing cavity (101) is arranged in the wall of the device main body (1), a second cooling liquid flowing cavity (203) is arranged in the wall of the high-temperature tail gas conveying plate (2), a plurality of cooling vent holes (202) are formed in the upper end of the high-temperature tail gas conveying plate (2), and the cooling liquid flowing cavity (201) are communicated with the first cooling liquid flowing cavity (101);
the dioxin removing mechanism (3) comprises a transit shaft (301) movably connected to the inner wall of the device main body (1), a ventilation isolation cylinder (302) sleeved on the transit shaft (301), and a plurality of inner connecting partition plates (303) connected between the transit shaft (301) and the ventilation isolation cylinder (302), wherein activated clay (304) is filled in a space between the inner connecting partition plates (303) and the ventilation isolation cylinder (302);
a cooling air outlet (105) is formed in one side wall of the device main body (1), a connecting pipeline is connected to the cooling air outlet (105), the device main body (1) is connected with a dust removing mechanism (5) through the connecting pipeline, and a temperature sensor (4) is arranged on the connecting pipeline;
the dust removing mechanism (5) comprises a shell and a plurality of dust removing cloth bags (501) connected to the inner wall of the shell, the upper end of the shell is provided with a tail gas outlet (502), the lower end of the shell is provided with a plurality of detachable dust outlet (503) matched with the dust removing cloth bags (501), and activated clay (304) is filled in the dust removing cloth bags (501);
the first guide plate (103) is parallel to the second guide plate (104), an included angle between the first guide plate (103) and the horizontal plane is 10 degrees to 30 degrees, the first guide plate (103) is connected to the inner wall of the other side of the device main body (1), and the second guide plate (104) is connected to the inner wall of one side of the device main body (1).
2. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, which is characterized in that: an exhaust gas circulation gap is arranged between the first guide plate (103) and the inner wall of one side of the device main body (1), and an exhaust gas circulation gap is arranged between the second guide plate (104) and the inner wall of the other side of the device main body (1).
3. The device for removing dioxin in hazardous waste incineration flue gas according to claim 2, which is characterized in that: the device is characterized in that a removal chamber (102) is arranged in the device main body (1), and the first guide plate (103), the second guide plate (104) and the dioxin removal mechanism (3) are all positioned in the removal chamber (102).
4. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, which is characterized in that: the cooling air outlet (105) and the cooling vent hole (202) are round table-shaped perforations.
5. A method for removing dioxin from flue gas by using the device as claimed in any one of claims 1 to 4, comprising the steps of:
step S1, pyrolysis combustion is carried out on materials in a pyrolysis furnace, high-temperature tail gas generated by the pyrolysis combustion is introduced into a high-temperature tail gas conveying channel (201) in a high-temperature tail gas conveying plate (2), cooling liquid is simultaneously introduced into a second cooling liquid flowing cavity (203), and the cooling liquid flows through a first cooling liquid flowing cavity (101) and a second cooling liquid flowing cavity (203) and cools the high-temperature tail gas;
s2, high-temperature tail gas flows into the removal cavity (102) from the cooling vent hole (202), and fully contacts with the dioxin removal mechanism (3) under the diversion effect of the first diversion plate (103) and the second diversion plate (104), and the activated clay (304) in the dioxin removal mechanism (3) fully removes the dioxin in the tail gas;
s3, fully removing dioxin from the tail gas, flowing into the dust removing mechanism (5) through the cooling air outlet (105), detecting the temperature of the tail gas through the temperature sensor (4) when the tail gas flows into the dust removing mechanism (5), and transmitting a high-temperature signal to the control end if the temperature of the tail gas is not reduced to the standard temperature;
and S4, filtering the tail gas flowing into the dust removing mechanism (5) through a dust removing cloth bag (501) fully, filtering impurities in the tail gas, discharging the tail gas reaching standards through a tail gas outlet (502), and collecting and treating the impurities from a detachable dust outlet (503).
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| JPH11276857A (en) * | 1998-03-31 | 1999-10-12 | Kanegafuchi Chem Ind Co Ltd | Treatment agent and treatment for exhaust gas from incineration installation |
| JP2002045648A (en) * | 2000-05-23 | 2002-02-12 | Sumitomo Chem Co Ltd | Method for treating exhaust gas and device used for the method |
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| CN104722191A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Harmless combined deacidifying and dust removing method and harmless combined deacidifying and dust removing system for flue gas obtained by combusting domestic garbage |
| CN110652825A (en) * | 2019-11-08 | 2020-01-07 | 广东佳德环保科技有限公司 | System for removing dioxin in flue gas |
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2021
- 2021-01-12 CN CN202110036198.9A patent/CN112879920B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11276857A (en) * | 1998-03-31 | 1999-10-12 | Kanegafuchi Chem Ind Co Ltd | Treatment agent and treatment for exhaust gas from incineration installation |
| JP2002045648A (en) * | 2000-05-23 | 2002-02-12 | Sumitomo Chem Co Ltd | Method for treating exhaust gas and device used for the method |
| CN103267298A (en) * | 2013-04-23 | 2013-08-28 | 威海鲁源科技环保设备有限公司 | Cremation machine tail gas purifying treatment system with air cooler |
| CN104722191A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Harmless combined deacidifying and dust removing method and harmless combined deacidifying and dust removing system for flue gas obtained by combusting domestic garbage |
| CN110652825A (en) * | 2019-11-08 | 2020-01-07 | 广东佳德环保科技有限公司 | System for removing dioxin in flue gas |
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| CN112879920A (en) | 2021-06-01 |
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Denomination of invention: A device and method for removing dioxins from hazardous waste incineration flue gas Granted publication date: 20231205 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chizhou branch Pledgor: Anhui Yuanyang Environmental Protection Technology Co.,Ltd. Registration number: Y2024980003878 |
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