CN112879920A - 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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- CN112879920A CN112879920A CN202110036198.9A CN202110036198A CN112879920A CN 112879920 A CN112879920 A CN 112879920A CN 202110036198 A CN202110036198 A CN 202110036198A CN 112879920 A CN112879920 A CN 112879920A
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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 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000003546 flue gas Substances 0.000 title claims abstract description 27
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 18
- 238000004056 waste incineration Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 116
- 239000000428 dust Substances 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000004927 clay Substances 0.000 claims abstract description 19
- 238000003795 desorption Methods 0.000 claims abstract description 7
- 239000000110 cooling liquid Substances 0.000 claims description 36
- 239000004744 fabric Substances 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 239000000112 cooling gas Substances 0.000 claims description 7
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 25
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 238000005457 optimization Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick 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
- 230000008054 signal transmission 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
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- 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 invention relates to a device and a method for removing dioxin in hazardous waste incineration flue gas, which comprises a device main body, a high-temperature tail gas conveying plate arranged in the device main body and a dust removal mechanism connected to the device main body, wherein the inner wall of the device main body is connected with a plurality of first guide plates and a plurality of second guide plates which are alternately distributed up and down, and a plurality of dioxin removal mechanisms are arranged in the device main body. This desorption device and method of dioxin in hazardous waste burns flue gas adopts activated clay to replace the active carbon, through activated clay and corresponding cooling, the diversion system carries out abundant and safe desorption dioxin to high temperature flue gas, can prevent that high temperature tail gas from leading to the active carbon burning because of the cooling trouble, the active carbon that can effectually prevent to burn leads to the fact the condition such as burning out to the dust removal sack to appear, the effectual system steady operation that burns of having ensured has avoided leading to the system to park unusually because of spontaneous combustion.
Description
Technical Field
The invention 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
Along with the acceleration of urbanization pace and the improvement of living standard of people, the amount of domestic garbage is greatly increased, and the garbage harmless treatment becomes a necessary choice. At present, the domestic garbage disposal mode is a landfill mode, and is denied in most areas due to environmental pollution. One is to use the waste incineration mode, and the generated fly ash is treated as follows: the fly ash is added with a chelating agent for solidification and then is buried, and the harmful substances in the fly ash are adsorbed by activated carbon and then are used industrially, such as brick making, pottery making and the like. The existing waste incineration technology and process flow have the environmental protection problem which cannot be thoroughly solved, and harm is caused to the environment and the life of residents. 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 is inflammable at high temperature, the activated carbon burns when the temperature exceeds 500 ℃, and once the activated carbon burns, a cloth bag in a subsequently used bag-type dust collector can be directly burnt, although the high-temperature tail gas can be rapidly cooled in the prior art, once the condition of cooling system failure or operation error of workers occurs, the whole device can be damaged irreversibly, so that the safety accident is easily caused, a serious dioxin atmospheric pollution event is caused, and a potential great threat is formed to the ecological environment.
Disclosure of Invention
The invention 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 invention realizes the purpose through the following technical scheme:
a device for removing dioxin in hazardous waste incineration flue gas comprises a device body, a high-temperature tail gas conveying plate arranged in the device body and a dust removal mechanism connected to the device body, wherein the inner wall of the device body is connected with a plurality of first guide plates and a plurality of second guide plates which are alternately distributed up and down, a plurality of dioxin removal mechanisms are arranged in the device body and are uniformly distributed between the first guide plates and the second guide plates, a first cooling liquid circulation chamber is arranged in the wall of the device body, a high-temperature tail gas conveying channel is arranged in the high-temperature tail gas conveying plate, a second cooling liquid circulation chamber is arranged in the wall of the high-temperature tail gas conveying plate, a plurality of cooling air holes are arranged at the upper end of the high-temperature tail gas conveying plate and are communicated with the high-temperature tail gas conveying channel, the first cooling liquid circulation chamber is communicated with the second cooling liquid circulation chamber;
the dioxin removal 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 internal connection partition plates connected between the middle rotating shaft and the ventilation isolation cylinder, wherein activated clay is filled in a space between each internal connection partition plate and the ventilation isolation cylinder.
As a further optimization scheme of the invention, 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 removal mechanism through the connecting pipeline, and a temperature sensor is arranged on the connecting pipeline.
As a further optimization scheme of the invention, the dust removal mechanism comprises a shell and a plurality of dust removal 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 outlets matched with the dust removal cloth bags, and the dust removal cloth bags are filled with activated clay.
As a further optimization scheme of the invention, the first guide plate and the second guide plate are parallel, the included angle between the first guide plate and the horizontal plane is 10-30 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 optimized scheme of the invention, 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 invention, a removing cavity is arranged in the device main body, and the first guide plate, the second guide plate and the dioxin removing mechanism are all positioned in the removing cavity.
As a further optimization scheme of the invention, the cooling air outlet and the cooling vent hole are both truncated cone-shaped through holes.
A method for removing dioxin in flue gas by adopting the device comprises the following steps:
s1, pyrolyzing and burning the material in a pyrolysis furnace, introducing high-temperature tail gas generated by pyrolysis and burning 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 circulation chamber, and cooling the high-temperature tail gas by the cooling liquid flowing through a first cooling liquid circulation chamber and a second cooling liquid circulation chamber;
s2, allowing the high-temperature tail gas to flow into a removing cavity from the cooling vent hole, and fully contacting with a dioxin removing mechanism under the guide action of a first guide plate and a second guide plate, wherein the dioxin in the tail gas is fully removed by activated clay in the dioxin removing mechanism;
s3, enabling the tail gas with the dioxin fully removed to flow into a dust removal mechanism through a cooling gas outlet, detecting the temperature of the tail gas through a temperature sensor when the tail gas flows into the dust removal mechanism, and transmitting a high-temperature signal to a control end if the temperature of the tail gas is not reduced to a standard temperature;
and S4, fully filtering the tail gas flowing into the dust removal mechanism through a dust removal cloth bag, filtering impurities in the tail gas, discharging the tail gas reaching the standard through a tail gas discharge port, and collecting and treating the impurities from the detachable dust outlet.
The invention has the beneficial effects that:
1) according to the invention, activated clay is used for replacing activated carbon, and dioxin is fully and safely removed from high-temperature flue gas through the activated clay and the corresponding cooling and diversion system, so that the combustion of the activated carbon caused by cooling faults of high-temperature tail gas can be prevented, the burning of a dust removal cloth bag by the burnt activated carbon can be effectively prevented, the stable operation of a burning system is effectively ensured, and the abnormal shutdown of the system caused by spontaneous combustion is avoided;
2) when the invention is used for treating high-temperature tail gas, high-temperature gas flows into a cooling vent hole from a high-temperature tail gas conveying channel, at the same time, high-temperature flue gas flows into a removal chamber after cooling liquid in a second cooling liquid circulating chamber is cooled, at the same time, the high-temperature flue gas flows into a space between a first guide plate and a second guide plate under the flow guide effect of the first guide plate, and simultaneously the tail gas flows into a ventilation isolation cylinder, the tail gas can blow an internal connecting partition plate when fully contacting with activated clay, and the whole dioxin removal mechanism is driven to rotate through the rotation of the internal connecting partition plate, the activated clay in the tail gas can be more fully contacted with the tail gas while rotating, after the high-temperature tail gas is guided by a plurality of guide plates and is removed by the dioxin removal mechanism, the tail gas is discharged into a dust removal mechanism from a cooling gas outlet, the first cooling liquid continuously circulates the tail gas in the chamber and the temperature in the removal chamber is cooled, the tail gas is subjected to temperature measurement by the temperature sensor and then enters the dust removal mechanism for sufficient filtration, impurities in the tail gas can be effectively filtered, the tail gas reaching the standard is discharged from the tail gas discharge port, if the temperature of the tail gas passing through the temperature sensor exceeds the standard, a signal can be transmitted to the control end, a worker can conveniently and rapidly carry out safe adjustment on the device, and meanwhile, the high-temperature tail gas cannot damage a dust removal cloth bag, so that the device is safer;
3) the invention has simple structure, high stability, reasonable design and convenient realization.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is a schematic structural view of the dioxin removal mechanism of the present invention.
In the figure: 1. a first device main body; 101. a first coolant flow chamber; 102. a removal chamber; 103. a first baffle; 104. a second baffle; 105. a cooling air outlet; 2. a high temperature tail gas conveying plate; 201. a high temperature tail gas conveying channel; 202. cooling the vent holes; 203. a second coolant flow chamber; 3. a dioxin removal mechanism; 301. a middle rotating shaft; 302. a venting isolation cartridge; 303. interconnecting the partition plates; 304. activated clay; 4. a temperature sensor; 5. a dust removal mechanism; 501. a dust removal cloth bag; 502. a tail gas discharge port; 503. the dust outlet can be disassembled.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-2, a device for removing dioxin in hazardous waste incineration flue gas comprises a device body 1, a high-temperature tail gas conveying plate 2 arranged in the device body 1, and a dust removing mechanism 5 connected to the device body 1, wherein the inner wall of the device body 1 is connected with a plurality of first guide plates 103 and a plurality of second guide plates 104, the plurality of first guide plates 103 and the plurality of second guide plates 104 are alternately distributed up and down, the device body 1 is internally provided with a plurality of dioxin removing mechanisms 3, the plurality of dioxin removing mechanisms 3 are uniformly distributed between the first guide plates 103 and the second guide plates 104, the wall of the device body 1 is internally provided with a first cooling liquid circulation chamber 101, the high-temperature tail gas conveying plate 2 is internally provided with a high-temperature tail gas conveying channel 201, the wall of the high-temperature tail gas conveying plate 2 is internally provided with a second cooling liquid circulation chamber 203, the upper end of the high-temperature tail gas conveying plate 2 is provided with a plurality, the cooling vent hole 202 is communicated with the high-temperature tail gas conveying channel 201, and the first cooling liquid circulation chamber 101 is communicated with the second cooling liquid circulation chamber 203;
the dioxin removal mechanism 3 comprises a middle rotating shaft 301 movably connected to the inner wall of the device main body 1, a ventilation isolation cylinder 302 sleeved on the middle rotating shaft 301, and a plurality of internal connection partition plates 303 connected between the middle rotating shaft 301 and the ventilation isolation cylinder 302, wherein activated clay 304 is filled in the space between the internal connection 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 the dust removing mechanism 5 through the connecting pipeline, and the connecting pipeline is provided with a temperature sensor 4. Temperature sensor 4 is used for detecting whether the tail gas temperature that gets into in dust removal mechanism 5 reaches standard, if not then carries out information feedback to the control end rapidly, can effectually prevent accident.
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, a tail gas 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 activated clay 304 has the same characteristics of incombustibility, corrosion resistance, adsorbability and other physical characteristics equivalent to those of activated carbon, replaces the activated carbon to remove dioxin in hazardous waste incineration flue gas at high temperature, and can effectively prevent high-temperature tail gas from burning the activated carbon.
The first guide plate 103 is parallel to the second guide plate 104, the 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; a removing chamber 102 is arranged in the device main body 1, and the first guide plate 103, the second guide plate 104 and the dioxin removing mechanism 3 are all positioned in the removing chamber 102. The tail gas flows along the channel with the dioxin removal mechanism 3 under the flow guide effect of the guide plate, and the dioxin in the tail gas can be fully removed after a long-time reaction.
The cooling air outlet 105 and the cooling vent 202 are both truncated cone-shaped through holes. The gas circulation direction of the circular truncated cone-shaped perforation is that high-temperature gas flows from the large circular port end to the small circular port end, the diameter of the large circular port end is 8-10 times of that of the small circular port end, the circular truncated cone-shaped perforation is set to be in the shape, the high-temperature tail gas can be effectively subjected to sufficient and effective heat exchange with the cooling liquid when passing through the perforation, and the cooling liquid can be used for replacing the heat in the high-temperature tail gas in the circulation cavity and cooling the high-temperature tail gas.
As shown in fig. 3, the method for removing dioxin from flue gas by using the device comprises the following steps:
s1, pyrolyzing and burning the material in a pyrolysis furnace, introducing high-temperature tail gas generated by pyrolysis and burning 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 circulation chamber 203, and cooling the high-temperature tail gas by the cooling liquid flowing through a first cooling liquid circulation chamber 101 and the second cooling liquid circulation chamber 203;
step S2, allowing the high-temperature tail gas to flow into the removing chamber 102 from the cooling vent 202, and to be in full contact with the dioxin removing mechanism 3 under the guide action of the first guide plate 103 and the second guide plate 104, so that the dioxin in the tail gas is fully removed by the activated clay 304 in the dioxin removing mechanism 3;
s3, enabling the tail gas with dioxin fully removed to flow into a dust removal mechanism 5 through a cooling gas outlet 105, detecting the temperature of the tail gas through a temperature sensor 4 when the tail gas flows into the dust removal mechanism 5, and transmitting a high-temperature signal to a control end if the temperature of the tail gas is not reduced to a standard temperature;
and S4, fully filtering the tail gas flowing into the dust removing mechanism 5 through a dust removing cloth bag 501, filtering impurities in the tail gas, discharging the tail gas reaching the standard through a tail gas discharge port 502, and collecting and treating the impurities from a detachable dust outlet 503.
When high-temperature tail gas is treated, high-temperature gas flows into the cooling vent 202 from the high-temperature tail gas conveying channel 201, at the moment, high-temperature flue gas flows into the desorption chamber 102 after the cooling of cooling liquid in the second cooling liquid circulation chamber 203, at the moment, the high-temperature flue gas flows into the space between the first guide plate 103 and the second guide plate 104 under the flow guiding effect of the first guide plate 103, meanwhile, the tail gas flows into the ventilation isolation cylinder 302, the tail gas can blow the inner connecting partition plate 303 when being in sufficient contact with the activated clay 304, and the whole dioxin desorption mechanism 3 is driven to rotate through the rotation of the inner connecting partition plate 303, the activated clay 304 in the tail gas can be in more sufficient contact with the tail gas during rotation, after the high-temperature tail gas passes through the flow guiding of a plurality of guide plates and the desorption effect of the dioxin desorption mechanism 3, the tail gas is discharged into the dust removal mechanism 5 from the cooling gas outlet 105, the tail gas with continuous circulation of the cooling liquid in the first cooling liquid The degree is cooled down and is handled, tail gas carries out abundant filtration in getting into dust removal mechanism 5 after temperature sensor 4's temperature measurement, can effectually filter impurity in it, tail gas up to standard is discharged from tail gas discharge port 502, if tail gas temperature exceeds standard when passing through temperature sensor 4 department, then can be with signal transmission to control end, make things convenient for the staff to carry out safety control to the device rapidly, the tail gas of while high temperature also can not cause the damage to dust removal sack 501, safety more.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The utility model provides a desorption device of dioxin in hazardous waste burns flue gas which characterized in that: 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 on the device main body (1), wherein the inner wall of the device main body (1) is connected with a plurality of first guide plates (103) and a plurality of second guide plates (104), the plurality of first guide plates (103) and the plurality of second guide plates (104) are alternately distributed from top to bottom, 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 circulation chamber (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), and a second cooling liquid circulation chamber (203) is arranged in the wall of the high-temperature tail gas conveying plate (2), the upper end of the high-temperature tail gas conveying plate (2) is provided with a plurality of cooling vent holes (202), the cooling vent holes (202) are communicated with a high-temperature tail gas conveying channel (201), and a first cooling liquid circulation chamber (101) is communicated with a second cooling liquid circulation chamber (203);
the dioxin removal mechanism (3) comprises a middle rotating shaft (301) movably connected to the inner wall of the device body (1), a ventilation isolation cylinder (302) sleeved on the middle rotating shaft (301), and a plurality of internal connection partition plates (303) connected between the middle rotating shaft (301) and the ventilation isolation cylinder (302), wherein activated clay (304) is filled in the space between the internal connection partition plates (303) and the ventilation isolation cylinder (302).
2. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, characterized in that: the device is characterized in that a cooling gas outlet (105) is formed in one side wall of the device body (1), a connecting pipeline is connected to the cooling gas outlet (105), the device body (1) is connected with the dust removal mechanism (5) through the connecting pipeline, and a temperature sensor (4) is arranged on the connecting pipeline.
3. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, characterized in that: the dust removal mechanism (5) comprises a shell and a plurality of dust removal cloth bags (501) connected to the inner wall of the shell, a tail gas discharge port (502) is formed in the upper end of the shell, a plurality of detachable dust outlet ports (503) matched with the dust removal cloth bags (501) are formed in the lower end of the shell, and activated clay (304) is filled in the dust removal cloth bags (501).
4. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, characterized in that: 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 10-30 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).
5. The device for removing dioxin in hazardous waste incineration flue gas according to claim 4, characterized in that: a tail gas circulation gap is formed 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 formed between the second guide plate (104) and the inner wall of the other side of the device main body (1).
6. The device for removing dioxin in hazardous waste incineration flue gas according to claim 5, characterized in that: a removing cavity (102) is arranged in the device main body (1), and the first guide plate (103), the second guide plate (104) and the dioxin removing mechanism (3) are all located in the removing cavity (102).
7. The device for removing dioxin in hazardous waste incineration flue gas according to claim 1, characterized in that: the cooling air outlet (105) and the cooling vent hole (202) are both truncated cone-shaped through holes.
8. A method for removing dioxin from flue gas by using the device of any one of claims 1 to 7, which comprises the following steps:
s1, pyrolyzing and burning the material in a pyrolysis furnace, introducing high-temperature tail gas generated by pyrolysis and burning 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 circulation chamber (203), and cooling the high-temperature tail gas by the cooling liquid flowing through a first cooling liquid circulation chamber (101) and the second cooling liquid circulation chamber (203);
s2, allowing the high-temperature tail gas to flow into a removing chamber (102) from a cooling vent hole (202), and fully contacting with a dioxin removing mechanism (3) under the guide action of a first guide plate (103) and a second guide plate (104), wherein dioxin in the tail gas is fully removed by activated clay (304) in the dioxin removing mechanism (3);
s3, enabling the tail gas with dioxin fully removed to flow into a dust removal mechanism (5) through a cooling gas outlet (105), detecting the temperature of the tail gas through a temperature sensor (4) when the tail gas flows into the dust removal mechanism (5), and transmitting a high-temperature signal to a control end if the temperature of the tail gas is not reduced to a standard temperature;
and S4, fully filtering the tail gas flowing into the dust removal mechanism (5) through a dust removal cloth bag (501), filtering impurities in the tail gas, discharging the tail gas reaching the standard through a tail gas discharge port (502), and collecting and treating the impurities from a detachable dust outlet (503).
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Citations (5)
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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 |
| 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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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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| CN112879920B (en) | 2023-12-05 |
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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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