CN106352343B - Incinerator suitable for high heating value house refuse - Google Patents
Incinerator suitable for high heating value house refuse Download PDFInfo
- Publication number
- CN106352343B CN106352343B CN201610838265.8A CN201610838265A CN106352343B CN 106352343 B CN106352343 B CN 106352343B CN 201610838265 A CN201610838265 A CN 201610838265A CN 106352343 B CN106352343 B CN 106352343B
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- Prior art keywords
- incinerator
- firing chamber
- dual firing
- fire grate
- vaporizer
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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
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
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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
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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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
- F23G5/46—Recuperation of heat
-
- 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
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
- Environmental & Geological Engineering (AREA)
Abstract
The present invention provides a kind of incinerator suitable for high heating value house refuse, and the incinerator is divided into vaporizer and dual firing chamber's two parts, and the bottom of vaporizer uses horizontal fire grate, and the bottom of the fire grate configures First air wind cabin；The dual firing chamber is located at the vaporizer top, and Secondary Air and circulating flue gas enter burner hearth from the dual firing chamber side respectively, to promote the bulk temperature of the after-flame of fuel gas and the reduction dual firing chamber in the dual firing chamber.According to the present invention it is possible to effectively solve the various drawbacks of traditional life waste incineration mode bring, have many advantages, such as low carbon content in the bottom ash, ultra-low NOx emission amount, ultralow flying dust concentration, simplify smoke processing system, so that investment and operating cost substantially reduce.
Description
Technical field
The present invention relates to field of waste incineration, in particular to a kind of gasification burning suitable for high heating value house refuse
Furnace.
Background technique
In recent years, waste incineration is increasingly paid attention to as the mainstream treatment measures of domestic and international house refuse, and rubbish is burnt
The share of burning also improves year by year.With the reinforcement of society environmental protection consciousness, government wants flue gas of refuse burning discharge
Ask also gradually severe, conventional incineration mode exposes its drawback gradually, i.e., due in flue gas pollutant concentration height make at flue gas
The dust deposit in furnace coking process influence unit reliability of operation that cost is more and more higher, frequently occurs is managed, exploitation was both able to satisfy
Incineration treatment of garbage demand can reduce again invest be with the junk-free processing technique of operating cost Future Development direction.
Mainstream technology of garbage disposal is all made of direct burn down mode at present, using more incinerator be mainly grate furnace and
Circulating fluidized bed boiler.The grate furnace more mature for technology, due to taking the technique directly burned, and primary air flow compared with
Greatly, 70% total blast volume share is often accounted for, so that the NOx generated in burning process is more, causes smoke processing system complicated,
Operating cost is higher, the problems such as flying dust amount big, dust deposit in furnace, serious coking and high temperature corrosion occurs, and that causes that equipment runs can
It is reduced by property.Circulating fluidized bed boiler uses inert bed material fluidized incineration house refuse, NOx concentration life low with incineration temperature
At the advantages that small, burn-off rate is high is measured, still, exhaust gas dust concentration height and equipment failure rate is high limits its and large-scale apply.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of incinerator suitable for high heating value house refuse, institute
It states incinerator and is divided into vaporizer and dual firing chamber's two parts, the bottom of vaporizer uses horizontal fire grate, the bottom of the fire grate
Portion configures First air wind cabin；The dual firing chamber is located at the vaporizer top, and Secondary Air and circulating flue gas are respectively from two combustion
Room side enters burner hearth, to promote the bulk temperature of the after-flame of fuel gas and the reduction dual firing chamber in the dual firing chamber.
In one example, the fire grate uses four Duan Peifeng, and every section configures the First air wind cabin, individually to control
Air quantity.
In one example, the length of the dual firing chamber, width are identical as the vaporizer.
In one example, the vaporizer top is the furnace internal partition wall made by flame-proof thermal insulation material, in the furnace every
Wall provides radiant heating for gasification.
In one example, one group of circulating flue gas jet pipe and Secondary Air jet pipe, control are arranged at the gasification chamber outlet
Flue-gas temperature is lower than 950 DEG C, to guarantee the decomposition of dioxin and the conflagration of combustible.
In one example, another group of circulating flue gas jet pipe and Secondary Air jet pipe are arranged, in the dual firing chamber with high speed
Promote the mixing of circulating flue gas, Secondary Air and the flue gas being discharged from the vaporizer.
In one example, the left side of the incinerator configures feed chute, the outside side wall of the feed chute
Arrange chute water cooling plant, the top of the feed chute is connected to feed inlet, and the bottom end of the feed chute is connected to the fire grate
Leading portion.
In one example, the latter end of the fire grate is connected to slag dropping tube, and the incinerator is adjacent to the slag dropping tube
The lower disposed flame-observing hole of side furnace wall observes burning for the rubbish bed of material on the fire grate by the flame-observing hole in real time
Burning situation.
In one example, one burner hearth of location arrangements of the neighbouring feed inlet goes out at the top of the incinerator furnace wall
Mouthful, the incinerator is discharged by the furnace outlet in flue gas.
In one example, the rubbish bed of material on the fire grate is in anoxic vaporized state, effectively to inhibit the rubbish
Conversion of the fuel bound nitrogen to nitrogen oxides in the bed of material.
Gasification plus burning integral type chamber structure provided by according to the present invention and blowing system can effectively solve tradition
The various drawbacks of consumer waste incineration mode bring have low carbon content in the bottom ash, ultra-low NOx emission amount, ultralow flying dust concentration etc.
Advantage simplifies smoke processing system, so that investment and operating cost substantially reduce.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair
Bright embodiment and its description, principle used to explain the present invention.
In attached drawing:
Fig. 1 is the schematic cross sectional view of existing waste incineration machinery grate furnace；
Fig. 2 is the incinerator chamber structure suitable for high heating value house refuse according to exemplary embodiment of the present
Schematic cross sectional view.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed method and step and/or structure will be proposed in following description.Obviously,
Execution of the invention is not limited to specific details appreciated by those skilled in the art.Presently preferred embodiments of the present invention is detailed
It is described as follows, however other than these detailed descriptions, the present invention can also have other embodiments.
It should be understood that the present invention can be implemented in different forms, and should not be construed as being limited to propose here
Embodiment.On the contrary, provide these embodiments will make it is open thoroughly and completely, and will fully convey the scope of the invention to
Those skilled in the art.In the accompanying drawings, for clarity, the size and relative size in the area Ceng He may be exaggerated.From beginning to end
Same reference numerals indicate identical element.
It should be understood that when the term " comprising " and/or " including " is used in this specification, indicating described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or their combination." one " of singular, "one" and " described/should " be also intended to
Plural form, unless the context clearly indicates other mode.
For existing waste incinerator based on directly burning, mechanical kiln grate furnace is its mainstream.Fig. 1 shows a kind of mechanical kiln
Grate furnace, including feed inlet 101, feed fire grate 102, in burner hearth for waste incineration fire grate 103, be located at burning fire grate
The First air air feed system 104 of lower part, Secondary Air air feed system 105 and slag extractor 106 positioned at furnace throat portion.The First air
It is sent into from the air compartment for burning fire grate bottom, the Secondary Air is sent into from the furnace throat portion of the waste incinerator.
Burn fire grate and be integrally formed siege for burning away the refuse, the siege be divided into along longitudinal direction dryer section, burning zone and
After-flame section burns fire grate and is integrally divided into multiple burning units along longitudinal direction, usually 5 units, and each burning unit is by multiple cunnings
Dynamic fire grate segment, travelling grate piece and fixed grate film composition.Rubbish pours into the waste incinerator from feed inlet, by being fed furnace
It is burned on the siege that rubbish described in the reciprocal impetus of row enters in the incinerator, the rubbish described in the dryer section
It being oven-dried, is dehydrated, the rubbish mainly burns in the burning zone, and the rubbish by after-flame section has burnt totally, it
Remaining clinker enters slag extractor afterwards, is discharged out of the furnace by slag extractor.
The shortcomings that mechanical kiln grate furnace shown in fig. 1 is that high-intensitive directly burn generates a large amount of NOx and flue gas flying dust concentration
Higher, this can cause a series of corresponding problems, such as smoke processing system complexity, operating cost height, dust deposit in furnace, coking and height
Warm seriously corroded etc..
Have many advantages, such as that incineration temperature is low, NOx yield is small using the waste incinerator of Incineration in CFB technology, but
It is that flue gas flying dust concentration is high, incinerator constrains the large-scale application of such waste incinerator the disadvantages of equipment failure rate is high.
In order to solve above-mentioned technical problem possessed by existing waste incinerator, the present invention provides a kind of suitable for high fever
It is worth the incinerator of house refuse, the incinerator is divided into vaporizer and dual firing chamber's two parts, and the bottom of vaporizer is adopted
First air wind cabin is configured with the bottom of horizontal fire grate, the fire grate；The dual firing chamber is located at the vaporizer top, Secondary Air
Enter burner hearth from the dual firing chamber side respectively with circulating flue gas, to promote the after-flame of fuel gas and reduction in the dual firing chamber
The bulk temperature of the dual firing chamber.
The gasification suitable for high heating value house refuse provided according to the present invention, which adds, burns integral type chamber structure, Yi Jilu
High burn-off rate may be implemented in inner second air, circulating flue gas jetting device, ultralow nitrogen oxides (NOx) discharges, ultralow flying dust is dense
The cleaning gasification burning process of degree, low dioxin can be realized NOx emission without increasing later period denitrating technique and be lower than
100mg/Nm3Requirement, while reducing load of dust remove, greatly reduce system investments and operating cost, increase unit operation
Reliability.
As shown in Fig. 2, the incinerator provided by the invention suitable for high heating value house refuse is divided into vaporizer and two
Room two parts are fired, the bottom of vaporizer uses horizontal fire grate 4, and fire grate 4 uses four Duan Peifeng, and every section configures First air wind cabin
5, it can individually control air quantity；Dual firing chamber is located at vaporizer top, and length, width are identical as vaporizer, Secondary Air and circulation cigarette
Gas enters burner hearth from dual firing chamber side respectively, to promote the after-flame of fuel gas in dual firing chamber and reduce the whole warm of dual firing chamber
Degree.
The left side of incinerator configures feed chute 1, and the outside side wall of feed chute 1 arranges chute water cooling plant 2, into
Expect that the top of chute 1 is connected to feed inlet, the leading portion of the bottom end connection fire grate 4 of feed chute 1.The latter end of fire grate 4 is connected to slag dropping tube
6, the lower disposed flame-observing hole 14 of the side furnace wall 7 of neighbouring slag dropping tube 6 can be observed in real time by flame-observing hole 14 positioned at fire grate 4
On the rubbish bed of material 3 burning situation.Adjacent to the location arrangements furnace outlet 13 of feed inlet, flue gas passes through furnace at the top of furnace wall 7
13 discharge incinerator of thorax outlet.
When incinerator is run, rubbish is entered the leading portion of fire grate 4 by feed chute 1, then is automatically pushed to position by pusher
The rubbish bed of material 3 is formed above the fire grate of vaporizer bottom, fire grate 4 slowly pushes the rubbish bed of material 3 under reciprocating motion mode
6 direction of slag dropping tube, the reciprocating motion of fire grate 4 while the effect for also functioning to material toggling mixing, are easier to carry out gasification.Once
Wind is sent by First air wind cabin 5 from the bottom of fire grate 4, and the air quantity of different sections is adjustable, can provide gasification by actual demand
Oxygen needed for process.Vaporizer top is the furnace internal partition wall 8 made by flame-proof thermal insulation material, and incinerator runs Shi Qiwen
Degree is identical as flue-gas temperature, provides radiant heating for gasification.
It is run in vaporizer in anaerobic condition, flue gas combustible concentration is higher.One group is arranged at gasification chamber outlet to follow
Ring flue gas jet pipe 9 and Secondary Air jet pipe 10 play the role of oxygen needed for aftercombustion and reduce combustion product gases temperature, control cigarette
Temperature degree is lower than 950 DEG C, it is ensured that the decomposition of dioxin and the conflagration of combustible.
Due to being in anaerobic condition in vaporizer, First air air quantity is compared traditional grate furnace burning mode and is greatly reduced, makes
It obtains the flying dust amount that flue gas carries to substantially reduce, therefore, dust deposit in furnace, coking and high temperature corrosion risk reduce, flue gas purification system
It can also greatly simplify.Anoxic gasification reduces the fuel bound nitrogen in the rubbish bed of material 3 to the conversion of NOx, reduces from source
The source of NOx.
It arranges another group of circulating flue gas jet pipe 11 and Secondary Air jet pipe 12 again in dual firing chamber, circulation cigarette is promoted with high speed
The mixing of gas, Secondary Air and the flue gas being discharged from vaporizer, guarantees the after-flame of combustible.
The design of flue gas recirculation and grading secondary air can effectively control the combustion process of fuel gas, be greatly reduced
The generation of NOx, longer flue gas flow can guarantee that enough residence times decompose dioxin completely.
The incinerator suitable for high heating value house refuse of this offer has the advantage that
(1) integral type chamber structure is burned due to adding using gasification, primary air flow is greatly decreased in vaporizer, it is ensured that
Flue gas carries the reduction of flying dust amount, can effectively slow down dust deposit in furnace, coking and high temperature corrosion rate, increases waste heat boiler heat transfer
Efficiency, and reduce the dedusting workload of flue gas purification system；
(2) the rubbish bed of material on fire grate is in anoxic vaporized state, can effectively inhibit fuel bound nitrogen in the rubbish bed of material to
The conversion of NOx reduces the source of NOx from source；
(3) fire box temperature is controlled at 950 DEG C hereinafter, can effectively inhibit dual firing chamber's heating power type using flue gas recirculating technique
The formation of NOx；
(4) flue gas recirculation and the hierarchical arrangement of Secondary Air can reduce fire with the combustion process of deep-controlled fuel gas
Therefore oxygen level in flame, can be protected with the generation of deep-controlled NOx from the NOx content in the flue gas of dual firing chamber's outlet discharge
Card is in 100mg/Nm3Hereinafter, not needing to take any denitrification in the gas cleaning stage.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to
The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art
It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member
Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Claims (10)
1. a kind of incinerator suitable for high heating value house refuse, which is characterized in that the incinerator is divided into gasification
Room and dual firing chamber's two parts, the vaporizer and the dual firing chamber constitute gasification plus burn integral type chamber structure, the gasification
Furnace internal partition wall is provided between room and the dual firing chamber, the bottom of the vaporizer uses horizontal fire grate, the bottom of the fire grate
Portion configures First air wind cabin；The dual firing chamber is located at the vaporizer top, and Secondary Air and circulating flue gas are respectively from two combustion
Room side enters burner hearth, to promote the bulk temperature of the after-flame of fuel gas and the reduction dual firing chamber in the dual firing chamber.
2. incinerator according to claim 1, which is characterized in that the fire grate uses four Duan Peifeng, and every section is matched
The First air wind cabin is set, individually to control air quantity.
3. incinerator according to claim 1, which is characterized in that length, width and the gas of the dual firing chamber
It is identical to change room.
4. incinerator according to claim 1, which is characterized in that the vaporizer top is by flame-proof thermal insulation material
The furnace internal partition wall of production, the furnace internal partition wall provide radiant heating for gasification.
5. incinerator according to claim 1, which is characterized in that arrange one group of circulation at the gasification chamber outlet
Flue gas jet pipe and Secondary Air jet pipe, control flue-gas temperature is lower than 950 DEG C, to guarantee the decomposition of dioxin and the fast quick burning of combustible
It burns.
6. incinerator according to claim 1, which is characterized in that arrange another group of circulation cigarette in the dual firing chamber
Gas blowout pipe and Secondary Air jet pipe, to promote the mixing of circulating flue gas, Secondary Air and the flue gas being discharged from the vaporizer at a high speed.
7. incinerator according to claim 1 to 6, which is characterized in that the left side of the incinerator
Configure feed chute, the outside side wall of the feed chute arranges chute water cooling plant, the top of the feed chute be connected into
Material mouth, the bottom end of the feed chute are connected to the leading portion of the fire grate.
8. incinerator according to claim 7, which is characterized in that the latter end of the fire grate is connected to slag dropping tube, described
Incinerator observes position by the flame-observing hole adjacent to the lower disposed flame-observing hole of the side furnace wall of the slag dropping tube in real time
In the burning situation of the rubbish bed of material on the fire grate.
9. incinerator according to claim 7, which is characterized in that neighbouring described at the top of the incinerator furnace wall
The incinerator is discharged by the furnace outlet in one furnace outlet of location arrangements of feed inlet, flue gas.
10. incinerator according to claim 1, which is characterized in that the rubbish bed of material on the fire grate is in anoxic
Vaporized state, effectively to inhibit conversion of the fuel bound nitrogen in the rubbish bed of material to nitrogen oxides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610838265.8A CN106352343B (en) | 2016-09-21 | 2016-09-21 | Incinerator suitable for high heating value house refuse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838265.8A CN106352343B (en) | 2016-09-21 | 2016-09-21 | Incinerator suitable for high heating value house refuse |
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| CN106352343A CN106352343A (en) | 2017-01-25 |
| CN106352343B true CN106352343B (en) | 2019-03-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931429A (en) * | 2017-03-10 | 2017-07-07 | 山东百川同创能源有限公司 | A kind of gasification, and combustion all-in-one oven |
| CN110006047B (en) * | 2019-03-27 | 2024-05-28 | 湖南人文科技学院 | Garbage incinerator and garbage gasification incinerator |
| CN110645567A (en) * | 2019-10-29 | 2020-01-03 | 辽宁绿源能源环保科技集团有限责任公司 | Pulverized coal boiler structure and pulverized coal combustion method |
| CN110848701A (en) * | 2019-11-14 | 2020-02-28 | 陕西润和环保科技有限公司 | Internal heating type garbage gasification incinerator device |
| CN111981489B (en) * | 2020-08-31 | 2023-05-16 | 重庆川然节能技术有限公司 | Smoke temperature self-adjusting system for secondary combustion chamber of incinerator |
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| CN106352343A (en) | 2017-01-25 |
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