CN215032225U - Fly ash removal dioxin equipment - Google Patents
Fly ash removal dioxin equipment Download PDFInfo
- Publication number
- CN215032225U CN215032225U CN202120009124.1U CN202120009124U CN215032225U CN 215032225 U CN215032225 U CN 215032225U CN 202120009124 U CN202120009124 U CN 202120009124U CN 215032225 U CN215032225 U CN 215032225U
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- China
- Prior art keywords
- fly ash
- dioxin
- catalyst
- flying dust
- dioxin removal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010881 fly ash Substances 0.000 title claims abstract description 98
- 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 24
- 239000003054 catalyst Substances 0.000 claims abstract description 54
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 21
- 238000003795 desorption Methods 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 40
- 238000007599 discharging Methods 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000003546 flue gas Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 238000000197 pyrolysis Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000010791 domestic waste Substances 0.000 abstract description 2
- 238000004056 waste incineration Methods 0.000 abstract 1
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 60
- 239000002245 particle Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000002956 ash Substances 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 150000002013 dioxins Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 238000006298 dechlorination reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000001509 sodium citrate Substances 0.000 description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 238000009284 supercritical water oxidation Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a flying dust desorption dioxin equipment relates to domestic waste incineration flying dust and handles technical field, and flying dust desorption dioxin system still includes catalyst mixing arrangement including flying dust feed bin, dioxin remove device, ejection of compact conveyor and the detoxify flying dust feed bin that connects in order, catalyst mixing arrangement includes casing, pivot and stirring crushed aggregates portion, the pivot is vertical to be set up in the casing, stirring crushed aggregates portion sets up along pivot length direction. The device for removing dioxin from fly ash provided by the utility model can fully mix the fly ash with the catalyst, realize high-efficiency low-temperature pyrolysis and obtain detoxified fly ash; the process system is simple and efficient, the devices are few, and the requirement for removing dioxin in incineration fly ash can be realized at low cost; the reaction environment is anaerobic, and the efficiency of removing the fly ash dioxin is effectively improved.
Description
Technical Field
The utility model relates to a domestic waste burns flying dust processing technology field, concretely relates to flying dust desorption dioxin equipment.
Background
The fly ash from incineration of domestic garbage (hereinafter referred to as "fly ash") is the bottom ash settled at the bottom of the flue and chimney and the collected matter from the flue gas purification system of the facility for incineration of domestic garbage. The fly ash is rich in various toxic and harmful substances such as heavy metals, dioxins, chlorine salts and the like, and is listed in national hazardous waste records, wherein the waste category is HW18, and the waste number is 772-002-18. The regulations in GB/T1134-2020 pollution control technical Specification (trial) for fly ash from incineration of household garbage: the content of dioxins in the treated product of the fly ash is controlled, the dioxins decomposition technology such as low-temperature thermal decomposition, high-temperature sintering and high-temperature melting can be adopted, and the total amount of the dioxin residues in the treated product is not more than 50ng-TEQ/kg (based on the dry weight of the fly ash). "
At present, the treatment of the incineration fly ash in China is limited by treatment cost, and technologies with high treatment cost such as high-temperature melting, mechanical ball milling, gas-phase chemical reduction, plasma, supercritical water oxidation and the like are difficult to popularize and apply in a short period.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: to the problem that above-mentioned exists, the utility model provides a flying dust desorption dioxin equipment through set up catalyst mixing device in flying dust desorption dioxin system for fly ash carries out high-efficient low temperature pyrolysis through the anoxybiotic heating after with catalyst intensive mixing, obtains the flying dust that detoxifies. The utility model provides a process systems is succinct, high-efficient, and the device is few, and requirement is got rid of to dioxin in the realization incineration fly ash that can low-cost.
The utility model adopts the technical scheme as follows:
the utility model provides a flying dust desorption dioxin equipment, is including flying dust feed bin, dioxin remove device, ejection of compact conveyor and the detoxify flying dust feed bin that connects in order, still including setting up the catalyst mixing device between flying dust feed bin and dioxin remove device, catalyst mixing device includes casing, pivot and stirring crushed aggregates portion, the pivot is vertical to be set up in the casing, stirring crushed aggregates portion sets up along pivot length direction.
Due to the adoption of the technical scheme, the catalyst mixing device is arranged in the fly ash removal dioxin equipment, the fly ash is fully mixed with the catalyst, and the catalyst in the dioxin removal device can provide active substances for dioxin removal reaction to promote dechlorination and condensation reaction of the fly ash, so that the fly ash can be subjected to high-efficiency low-temperature pyrolysis to obtain detoxified fly ash; the fly ash can be condensed into fly ash blocks in the transportation process, so that the catalyst cannot be fully mixed with the fly ash, the dioxin removal efficiency is influenced, and the fly ash blocks entering the catalyst mixing device are scattered by driving the material crushing part through the rotating shaft, so that the fly ash can be fully mixed with the catalyst.
Stirring crushed aggregates portion includes blade and a plurality of connecting rod, and is a plurality of the connecting rod evenly sets up along pivot length direction, the blade is double helix structure to through connecting rod and pivot fixed connection.
Due to the adoption of the technical scheme, the connecting rod can enable the blades to be away from the rotating shaft by a certain distance, the range of an action area of the stirring crushed material part is enlarged, and meanwhile, when the fly ash descends along the gap between the blades and the rotating shaft, the rotating connecting rod can play the roles of scattering fly ash blocks and stirring, so that the fly ash is fully mixed with the catalyst; the blades are of a double-spiral structure, so that the stirring efficiency can be improved.
The catalyst mixing device further comprises a plurality of catalyst spraying openings, the catalyst spraying openings are arranged on the middle upper portion of the shell and are evenly distributed along the circumferential direction of the shell, and the catalyst spraying openings evenly spray catalyst into the shell.
Due to the adoption of the technical scheme, the problem that the removal efficiency of dioxin in subsequent reaction is influenced by uneven spraying of the catalyst is prevented.
The catalyst mixing device also comprises a fly ash guide plate, the fly ash guide plate is arranged between the fly ash feeding hole and the stirring crushed material part, and the fly ash guide plate circumferentially surrounds the shell and forms a downward inclination angle with the horizontal direction.
Due to the adoption of the technical scheme, the fly ash guide plate guides the fly ash to the stirring crushed aggregates part along the inclination angle, so that a large amount of fly ash is prevented from sliding along the shell and cannot enter the action range of the stirring crushed aggregates part; meanwhile, the fly ash guide plate can also prevent the fly ash from flowing back.
And a flue gas outlet of the dioxin removal device is provided with a cyclone separator, and a flue gas outlet of the cyclone separator is connected with the flue gas evolution system and a material outlet and returns to the dioxin removal device.
Due to the adoption of the technical scheme, the flue gas generated by the dioxin removal device is separated by the cyclone separator, the separated gas enters the flue gas evolution system through the flue gas outlet of the cyclone separator, and the separated solid particles return to the dioxin removal device through the material outlet of the cyclone separator, so that the solid particles can be pyrolyzed for the second time, the smoke content of the discharged waste gas is low, and the environmental pollution is avoided.
A nitrogen pressurizing device is connected below a material outlet of the cyclone separator, a valve A is arranged between the nitrogen pressurizing device and the material outlet, and a valve B is arranged between the nitrogen pressurizing device and the dioxin removing device; and a self-refluxing loop is formed among the dioxin removing device, the cyclone separator and the nitrogen pressurizing device.
By adopting the technical scheme, when the fly ash can not flow back automatically, the valve A is closed, and nitrogen is introduced to increase the pressure in the nitrogen supercharging device so that the fly ash flows back to the dioxin removal device; meanwhile, the nitrogen enters the dioxin removal device together to be used as the carrier gas for oxygen insulation.
A feeding port and a discharging port of the dioxin removal device are respectively provided with a feeding airlock valve and a discharging airlock valve, and an oxygen-insulated environment is arranged between the feeding airlock valve and the discharging airlock valve.
By adopting the technical scheme, the anaerobic state in the dioxin removal device is ensured by arranging the feeding air lock valve and the discharging air lock valve.
The dioxin removal device comprises an outer shell and an inner cavity, the feeding port and the discharging port are respectively arranged at two ends of the inner cavity, a heating channel is formed between the outer shell and the inner cavity, and heating gas passes through the heating channel to be in oxygen insulation and heats the inner cavity.
Due to the adoption of the technical scheme, the dioxin removal device is subjected to anaerobic heating, so that the efficiency of removing the fly ash dioxin is effectively improved.
The discharging and conveying device is a discharging spiral conveyor.
By adopting the technical scheme and using the discharging screw conveyor, the device has the advantages of simple structure, good sealing performance, convenient operation, easy maintenance and convenient closed transportation, and avoids the leakage and environmental pollution of the detoxified fly ash in the transportation process.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a catalyst mixing arrangement makes flying dust and catalyst can the intensive mixing, realizes high-efficient low temperature pyrolysis, obtains the flying dust that detoxifies.
2. The utility model provides a process systems is succinct, high-efficient, and the device is few, and requirement is got rid of to dioxin in the realization incineration fly ash that can low-cost.
3. The utility model discloses be the anoxybiotic state in the assurance dioxin desorption device, effectively improve the efficiency of flying dust dioxin desorption.
4. The utility model discloses make solid particle can be by the secondary pyrolysis, and the exhaust waste gas contains the smoke volume fewly, avoids causing the pollution to the environment.
5. The utility model discloses let in nitrogen gas and ensure that the solid particle in the cyclone can the self-refluxing, nitrogen gas together gets into the carrier gas as the oxygen-insulated among the dioxin desorption device.
Drawings
FIG. 1 is a process flow diagram of a fly ash dioxin removal system of the present invention;
FIG. 2 is a schematic structural diagram of a system for removing dioxin from fly ash according to the present invention;
fig. 3 is a schematic structural diagram of the catalyst mixing device of the present invention.
The labels in the figure are: 1-stirring crushed part, 2-catalyst spraying opening, 3-fly ash guide plate, 4-fly ash feeding opening, 5-fly ash bin, 6-dioxin removal device, 7-discharge conveying device, 8-detoxication fly ash bin, 9-catalyst mixing device, 10-flue gas evolution system, 11-cyclone separator, 12-nitrogen pressurization device, 13-valve A, 14-valve B, 15-feed air lock valve, 16-discharge air lock valve, 101-connecting rod, 102-blade, 601-outer shell, 602-inner cavity and 603-heating channel.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides a flying ash desorption dioxin equipment, as shown in fig. 1-3, still including setting up catalyst mixing device 9 between flying ash feed bin and dioxin removal device including flying ash feed bin 5, dioxin removal device 6, ejection of compact conveyor 7 and the detoxify flying ash feed bin 8 that connect in order, catalyst mixing device 9 includes casing, pivot and stirring crushed aggregates portion 1, the pivot is vertical to be set up in the casing, stirring crushed aggregates portion 1 sets up along pivot length direction. Specifically, a catalyst mixing device is arranged in a fly ash removing dioxin device, the fly ash is fully mixed with a catalyst, preferably, the catalyst comprises desulfurized lime powder CaO, Ca (OH)2, CaCO3, MgO, manganese dioxide, silicon dioxide, Na2CO3 and sodium citrate, the desulfurized lime powder CaO, Ca (OH)2 and CaCO3 are contained as Ca-containing compounds, MgO, manganese dioxide and silicon dioxide are contained as transition metal oxides, Na2CO3 and sodium citrate are used as alkaline substances, the Ca-containing compounds, the transition metal oxides and the like in the catalyst are used as active substances for dioxin removing reaction, and the alkaline substances in the catalyst can promote dechlorination and condensation reaction of the fly ash, so that the fly ash can be subjected to high-efficiency low-temperature pyrolysis to obtain detoxified fly ash; the fly ash is probably condensed into fly ash blocks in the transportation process, so that the catalyst cannot be fully mixed with the fly ash, the dioxin removal efficiency is influenced, the rotating shaft is used for driving the stirring crushed material part 1, the fly ash blocks entering the catalyst mixing device 9 are scattered, and the fly ash can be fully mixed with the catalyst.
Stirring crushed aggregates portion 1 includes blade 102 and a plurality of connecting rod 101, and is a plurality of connecting rod 101 evenly sets up along pivot length direction, blade 102 is double helix structure to through connecting rod 101 and pivot fixed connection. Specifically, the connecting rod 101 can make the blades 102 have a certain distance from the rotating shaft, so as to enlarge the range of the action area of the stirring crushed material part 1, and meanwhile, when the fly ash descends along the gap between the blades 102 and the rotating shaft, the rotating connecting rod 101 can play the roles of scattering fly ash blocks and stirring, so as to ensure that the fly ash is fully mixed with the catalyst; the blades 102 have a double helix structure to improve the stirring efficiency.
Catalyst mixing arrangement still includes a plurality of catalyst spray openings 2, catalyst spray openings 2 set up in the well upper portion of casing and along casing circumference evenly distributed, catalyst spray openings 2 evenly sprays the catalyst in to the casing. The method prevents the catalyst from being sprayed unevenly to influence the removal efficiency of dioxin in subsequent reaction.
The catalyst mixing device further comprises a fly ash guide plate 3, the fly ash guide plate 3 is arranged between the fly ash feeding hole 4 and the stirring crushed material part 1, and the fly ash guide plate 3 circumferentially surrounds the shell and forms a downward inclination angle with the horizontal direction. Specifically, the fly ash guide plate 3 guides fly ash to the stirring crushed aggregates part 1 along an inclination angle, so that a large amount of fly ash is prevented from sliding along the shell and cannot enter the action range of the stirring crushed aggregates part 1; meanwhile, the fly ash guide plate 3 can also prevent the fly ash from flowing back.
A flue gas outlet of the dioxin removal device is provided with a cyclone separator 11, and a flue gas outlet of the cyclone separator 11 is connected with a flue gas evolution system 10 and a material outlet and returns to the dioxin removal device 6. Specifically speaking, the flue gas that produces dioxin remove device 6 is separated through cyclone 11, and the gas after the separation gets into flue gas evolution system 10 through cyclone 11's exhanst gas outlet, and the solid particle after the separation returns dioxin remove device 6 through cyclone 11's material export for solid particle can be by secondary pyrolysis, and the exhaust gas smoke content is few, avoids causing the pollution to the environment.
A nitrogen pressurizing device 12 is connected below the material outlet of the cyclone separator 11, a valve A13 is arranged between the nitrogen pressurizing device 12 and the material outlet, and a valve B14 is arranged between the nitrogen pressurizing device 12 and the dioxin removing device 6; and a self-refluxing loop is formed among the dioxin removal device 6, the cyclone separator 11 and the nitrogen pressurizing device 12. Specifically, when the fly ash cannot be subjected to self-refluxing, the valve a13 is closed, and nitrogen is introduced to increase the pressure in the nitrogen supercharging device 12, so that the fly ash flows back to the dioxin removal device 6; meanwhile, the nitrogen gas enters the dioxin removal device 6 together to be used as the carrier gas for oxygen insulation.
A feeding port and a discharging port of the dioxin removal device 6 are respectively provided with a feeding air lock valve 15 and a discharging air lock valve 16, and an oxygen-insulated environment is arranged between the feeding air lock valve 15 and the discharging air lock valve 16. The dioxin removal device 6 is ensured to be in an anaerobic state.
The discharging conveying device 7 is a discharging spiral conveyor. The discharging screw conveyor is simple in structure, good in sealing performance, convenient to operate, easy to maintain and convenient to carry in a sealing mode, and the detoxified fly ash is prevented from leaking in the conveying process and polluting the environment.
Correspondingly, the embodiment also discloses a method for removing dioxin from fly ash, which comprises the following steps:
A. introducing nitrogen into the dioxin removal device 6 to form an anaerobic environment inside the dioxin removal device 6;
B. feeding the fly ash stored in a fly ash bin 5 into a catalyst mixing device 9, fully mixing the fly ash with a catalyst according to the proportion of 4:1 to obtain a fly ash mixture, and feeding the fly ash mixture into a dioxin removal device 6 through a feeding gas lock valve 15;
C. in a dioxin removal device 6, heating the fly ash mixture to 450 ℃ by external heat and anaerobic heating, and reacting for 15min to remove dioxin to obtain detoxified fly ash;
D. the detoxified fly ash enters the discharge screw conveyor through the discharge airlock valve 16 and is conveyed to the detoxified fly ash bin 8 through the discharge screw conveyor.
The total amount of dioxin residues after treatment was 6ng-TEQ/kg (based on dry weight of fly ash).
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (9)
1. The utility model provides a flying dust desorption dioxin equipment, includes flying dust feed bin, dioxin remove device, ejection of compact conveyor and the flying dust feed bin of detoxicating that connects in order, its characterized in that: still including setting up the catalyst mixing device between flying dust feed bin and dioxin remove device, catalyst mixing device includes casing, pivot and stirring crushed aggregates portion, the pivot is vertical to be set up in the casing, stirring crushed aggregates portion sets up along pivot length direction.
2. The fly ash dioxin removal apparatus according to claim 1, characterized in that: stirring crushed aggregates portion includes blade and a plurality of connecting rod, and is a plurality of the connecting rod evenly sets up along pivot length direction, the blade is double helix structure to through connecting rod and pivot fixed connection.
3. The fly ash dioxin removal apparatus according to claim 1, characterized in that: the catalyst mixing device further comprises a plurality of catalyst spraying openings, the catalyst spraying openings are arranged on the middle upper portion of the shell and are evenly distributed along the circumferential direction of the shell, and the catalyst spraying openings evenly spray catalyst into the shell.
4. The fly ash dioxin removal apparatus according to claim 1, characterized in that: the catalyst mixing device also comprises a fly ash guide plate, the fly ash guide plate is arranged between the fly ash feeding hole and the stirring crushed material part, and the fly ash guide plate circumferentially surrounds the shell and forms a downward inclination angle with the horizontal direction.
5. The fly ash dioxin removal apparatus according to any one of claims 1 to 4, wherein: and a flue gas outlet of the dioxin removal device is provided with a cyclone separator, and a flue gas outlet of the cyclone separator is connected with the flue gas evolution system and a material outlet and returns to the dioxin removal device.
6. The fly ash dioxin removal apparatus according to claim 5, characterized in that: a nitrogen pressurizing device is connected below a material outlet of the cyclone separator, a valve A is arranged between the nitrogen pressurizing device and the material outlet, and a valve B is arranged between the nitrogen pressurizing device and the dioxin removing device; and a self-refluxing loop is formed among the dioxin removing device, the cyclone separator and the nitrogen pressurizing device.
7. The fly ash dioxin removal apparatus of claim 1, 2, 3, 4 or 6, which comprises: a feeding port and a discharging port of the dioxin removal device are respectively provided with a feeding airlock valve and a discharging airlock valve, and an oxygen-insulated environment is arranged between the feeding airlock valve and the discharging airlock valve.
8. The fly ash dioxin removal apparatus according to claim 7, wherein: the dioxin removal device comprises an outer shell and an inner cavity, the feeding port and the discharging port are respectively arranged at two ends of the inner cavity, a heating channel is formed between the outer shell and the inner cavity, and heating gas passes through the heating channel to be in oxygen insulation and heats the inner cavity.
9. The fly ash dioxin removal apparatus according to claim 1, characterized in that: the discharging and conveying device is a discharging spiral conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120009124.1U CN215032225U (en) | 2021-01-04 | 2021-01-04 | Fly ash removal dioxin equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120009124.1U CN215032225U (en) | 2021-01-04 | 2021-01-04 | Fly ash removal dioxin equipment |
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| Publication Number | Publication Date |
|---|---|
| CN215032225U true CN215032225U (en) | 2021-12-07 |
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| CN202120009124.1U Expired - Fee Related CN215032225U (en) | 2021-01-04 | 2021-01-04 | Fly ash removal dioxin equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283424A (en) * | 2022-04-13 | 2022-11-04 | 江山市虎鼎环保科技有限公司 | Method for co-processing medical waste incineration fly ash and household garbage incineration fly ash |
| CN116351847A (en) * | 2023-04-25 | 2023-06-30 | 生态环境部南京环境科学研究所 | Treatment device for removing dioxin in household garbage incineration fly ash by utilizing ball mill |
-
2021
- 2021-01-04 CN CN202120009124.1U patent/CN215032225U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283424A (en) * | 2022-04-13 | 2022-11-04 | 江山市虎鼎环保科技有限公司 | Method for co-processing medical waste incineration fly ash and household garbage incineration fly ash |
| CN116351847A (en) * | 2023-04-25 | 2023-06-30 | 生态环境部南京环境科学研究所 | Treatment device for removing dioxin in household garbage incineration fly ash by utilizing ball mill |
| CN116351847B (en) * | 2023-04-25 | 2023-12-08 | 生态环境部南京环境科学研究所 | Treatment device for removing dioxin in household garbage incineration fly ash by utilizing ball mill |
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Granted publication date: 20211207 |