CN108534142A - A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system - Google Patents

A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system Download PDF

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Publication number
CN108534142A
CN108534142A CN201810388140.9A CN201810388140A CN108534142A CN 108534142 A CN108534142 A CN 108534142A CN 201810388140 A CN201810388140 A CN 201810388140A CN 108534142 A CN108534142 A CN 108534142A
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CN
China
Prior art keywords
flue gas
gasification
oxygen
refuse pyrolysis
discharging system
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Pending
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CN201810388140.9A
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Chinese (zh)
Inventor
向卫
贾益
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Chongqing Polytron Technologies Inc
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Chongqing Polytron Technologies Inc
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Priority to CN201810388140.9A priority Critical patent/CN108534142A/en
Publication of CN108534142A publication Critical patent/CN108534142A/en
Pending legal-status Critical Current

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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
    • F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets
    • 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
    • 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
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/10—Drying by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/103—Combustion in two or more stages in separate chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/30—Oxidant supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/00001—Exhaust gas recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/30—Halogen; Compounds thereof
    • F23J2215/301—Dioxins; Furans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/60—Heavy metals; Compounds thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system, it is characterised in that：The system includes apparatus of oxygen supply, pure oxygen and flue gas pre-mixing apparatus, gasification furnace, secondary combustion chamber, fume extraction device, smoke gas collecting apparatus.

Description

A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system
Technical field：
The invention belongs to field of waste incineration, and in particular to a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system.
Technical background：
Currently, one, tier 2 cities garbage energy accesses more standardization processing, but small towns rubbish is since water content is high, heat The problems such as being worth low, yield few (≤50t/d), transport difficult, it is difficult to specification handles always, problem is serious：
(1) small towns living standard is more relatively low with city, and kitchen garbage accounts for main component in house refuse, causes rubbish Rubbish water content is high, calorific value is low, and small towns Municipal Garbage Yield few (≤50t/d), transport difficult；
(2) main processing ways of small towns rubbish are sanitary landfills and outdoor shed stackings, but small towns landfill condition at present Difference occupies a large amount of soils, while harmful components cause serious pollution to air, soil and water source in rubbish, not only break up Ecological environment, and seriously endanger health.And it is outdoor shed stacking compared with sanitary landfills pollute it is even more serious；
(3) if establishing common burning power plant in small towns, the calorific value of rubbish is low, moisture is high to cause, waste incineration The problem of temperature is low, and stove Nei bioxin is difficult to decompose, and since Municipal Garbage Yield is few, input and output is not directly proportional, is not enough to shape At industry；
(4) while waste incineration will produce the pollutants such as a large amount of NOx, SO2, if building desulphurization and denitration equipment, build Cost increases considerably, and desulphurization and denitration system can not possibly be built substantially by being burned for small towns small-sized rubbish.
Invention content：
Based on problem and shortage existing for above-mentioned small towns garbage disposal, a kind of refuse pyrolysis gasification burning chimney-free zero is proposed Exhaust system.
A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system, it is characterised in that：The system includes apparatus of oxygen supply, pure Oxygen and flue gas pre-mixing apparatus, gasification furnace, secondary combustion chamber, fume extraction device, smoke gas collecting apparatus.
Further technical solution is that it is pre- with flue gas that the flue gas in fume extraction device extraction secondary combustion chamber enters pure oxygen Pure oxygen is sent into pure oxygen and flue gas pre-mixing apparatus by mixing device, apparatus of oxygen supply, and the pure oxygen generated in pure oxygen and flue gas pre-mixing apparatus/ Smoke mixture respectively enters gasification furnace and secondary combustion chamber, etc. quality in equal volume replace required natural air.
Further technical solution is, by adjusting pure oxygen and the pure oxygen amount (quality or volume) in flue gas pre-mixing apparatus With exhaust gas volumn (quality or volume), temperature and the heat power field of gasification furnace and secondary combustion chamber are adjusted respectively.
Further technical solution is that oxygen is added in gasification furnace and secondary combustion chamber and replaces natural air combustion-supporting, cigarette The flue gas main component that gas draw-out device extracts is carbon dioxide, and flue gas is circulating flue gas.
Further technical solution is that flue gas main component is carbon dioxide, after being extracted by fume extraction device, most It is collected afterwards by smoke gas collecting apparatus, without in smoke stack emission to air during refuse pyrolysis gasification burning.
Further technical solution is, can after rubbish is by gasification furnace and secondary combustion chamber pyrolytic gasification and secondary burning Flue gas is introduced into waste heat boiler and heats water generation steam, steam is generated electricity by power generator, and power generator can be Screw expander electricity generation system.
Further technical solution is, it is possible to reduce the amount of oxygen (quality or volume) that reaction is participated in gasification furnace, make nitrogen, The substances such as sulphur are seldom aoxidized and are left in slag, and sulfide in flue gas, nitrogen oxides is made accordingly to reduce.
Further technical solution is, rubbish during gasification furnace and secondary combustion chamber pyrolytic gasification and secondary burning, Oxygen, which is added, replaces natural air combustion-supporting, drastically reduces nitrogen substance, and no thermal NO generates, and in the process The a large amount of CO gases generated inhibit and restore fuel NO.
Further technical solution is that the combustible gas that pyrolytic gasification generates in refuse gasification boiler passes through control in secondary combustion chamber Pure oxygen processed is mixed and burned with flue gas, controls temperature and gas residence time, the harmful substances such as Shi bioxin, heavy metal are fully fired It burns and decomposes.
Further technical solution is that certain proportion quick lime (CaO) is added in rubbish during gasification furnace pyrolytic gasification, The acidic materials such as SO2 during processing pyrolytic gasification.
Further technical solution is that the flue gas that fume extraction device extracts can also be passed through pre-drying device for rubbish It is dried, after landfill leachate heating evaporation is concentrated, sprays into secondary combustion chamber and burn, by high-temperature process, while also may be used The temperature of secondary combustion chamber is controlled using the percolate of the partial concentration.
In conclusion using a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system, small towns rubbish is handled nearby, Natural air supply is substituted using pure oxygen and heat smoke (CO2) premix to burn, and is recycled heat smoke, is improved heat utilization efficiency, and Ensure that bioxin, heavy metal fully decompose, compresses, seals the CO2 heat smokes that burning generates up for safekeeping, effectively burn concentrated leachate, control System burning, it is ensured that small towns refuse pyrolysis gasification burning zero-emission, safe and environment-friendly, efficient process small towns rubbish realize flue gas zero-emission It puts, thoroughly solve the problems, such as that small towns garbage disposal is difficult.
Description of the drawings
Fig. 1 is the case study on implementation schematic diagram of the present invention.
Specific implementation mode
With reference to case study on implementation and attached drawing, the invention will be further described.
As shown in Figure 1, the system includes apparatus of oxygen supply, pure oxygen and flue gas pre-mixing apparatus, gasification furnace, secondary combustion chamber, cigarette Gas draw-out device, smoke gas collecting apparatus.
The flue gas that fume extraction device extracts in secondary combustion chamber enters pure oxygen and flue gas pre-mixing apparatus, and apparatus of oxygen supply will be pure Oxygen is sent into pure oxygen and flue gas pre-mixing apparatus, is respectively enterd with the pure oxygen/smoke mixture generated in flue gas pre-mixing apparatus in pure oxygen Gasification furnace and secondary combustion chamber, etc. quality in equal volume replace required natural air.
By adjusting pure oxygen and the pure oxygen amount (quality or volume) and exhaust gas volumn (quality or volume) in flue gas pre-mixing apparatus, Temperature and the heat power field of gasification furnace and secondary combustion chamber are adjusted respectively.
Oxygen is added in gasification furnace and secondary combustion chamber replaces natural air combustion-supporting, the flue gas that fume extraction device extracts Main component is carbon dioxide, and flue gas is circulating flue gas.
Flue gas main component is carbon dioxide, after being extracted by fume extraction device, is finally received by smoke gas collecting apparatus Collection, without in smoke stack emission to air during refuse pyrolysis gasification burning.
After rubbish is by gasification furnace and secondary combustion chamber pyrolytic gasification and secondary burning, flue gas can be introduced into waste heat boiler Middle heating water generates steam, and steam is generated electricity by power generator, and power generator can be screw expander electricity generation system.
The amount of oxygen (quality or volume) for participating in reaction in gasification furnace can be reduced, the substances such as nitrogen, sulphur is made seldom to be aoxidized And be left in slag, so that sulfide in flue gas, nitrogen oxides is accordingly reduced.
Rubbish is added oxygen and replaces natural air during gasification furnace and secondary combustion chamber pyrolytic gasification and secondary burning It is combustion-supporting, nitrogen substance is drastically reduced, no thermal NO generates, and a large amount of CO gases generated in the process, suppression System and reduction fuel NO.
The combustible gas that pyrolytic gasification generates in refuse gasification boiler mixes combustion with flue gas in secondary combustion chamber by controlling pure oxygen It burns, controls temperature and gas residence time, the abundant combustion decomposition of the harmful substances such as Shi bioxin, heavy metal.
Rubbish is added certain proportion quick lime (CaO) during gasification furnace pyrolytic gasification, during handling pyrolytic gasification The acidic materials such as SO2.
The flue gas that fume extraction device extracts can also be passed through drying process of the pre-drying device for rubbish, by garbage filter After the concentration of liquid heating evaporation, sprays into secondary combustion chamber and burn, by high-temperature process, while the diafiltration of the partial concentration can also be used The temperature of hydraulic control secondary combustion chamber.
In addition to present implementation, other embodiments related to this are also in the application protection domain.

Claims (11)

1. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system, it is characterised in that：The system includes apparatus of oxygen supply, pure oxygen With flue gas pre-mixing apparatus, gasification furnace, secondary combustion chamber, fume extraction device, smoke gas collecting apparatus.
2. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system, it is characterised in that：Fume extraction device extracts secondary combustion It burns the flue gas in room and enters pure oxygen and flue gas pre-mixing apparatus, pure oxygen is sent into pure oxygen and flue gas pre-mixing apparatus by apparatus of oxygen supply, pure Pure oxygen/the smoke mixture generated in oxygen and flue gas pre-mixing apparatus respectively enters gasification furnace and secondary combustion chamber, etc. the bodies such as quality Product replaces required natural air.
3. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：It is pure by adjusting Oxygen and pure oxygen amount (quality or volume) and exhaust gas volumn (quality or volume) in flue gas pre-mixing apparatus, adjust gasification furnace and two respectively The temperature of secondary combustion chamber and heat power field.
4. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：In gasification furnace and Oxygen is added in secondary combustion chamber replaces natural air combustion-supporting, and the flue gas main component that fume extraction device extracts is titanium dioxide Carbon, flue gas are circulating flue gas.
5. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Flue gas mainly at It is divided into carbon dioxide, after being extracted by fume extraction device, is finally collected by smoke gas collecting apparatus, is burnt in refuse pyrolysis gasification Without in smoke stack emission to air during burning.
6. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, is characterized in that：Rubbish passes through gasification After stove and secondary combustion chamber pyrolytic gasification and secondary burning, flue gas can be introduced into waste heat boiler and heat water generation steam, steamed Vapour is generated electricity by power generator, and power generator can be screw expander electricity generation system.
7. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Gas can be reduced Change the amount of oxygen (quality or volume) for participating in reaction in stove, so that the substances such as nitrogen, sulphur is seldom aoxidized and is left in slag, make cigarette Sulfide, nitrogen oxides are accordingly reduced in gas.
8. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Rubbish is gasifying During stove and secondary combustion chamber pyrolytic gasification and secondary burning, oxygen is added and replaces natural air combustion-supporting, drastically reduces Nitrogen substance, no thermal NO generates, and a large amount of CO gases generated in the process, inhibits and restore fuel type nitrogen oxygen Compound.
9. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Refuse gasification boiler The combustible gas that middle pyrolytic gasification generates is mixed and burned by controlling pure oxygen with flue gas in secondary combustion chamber, controls temperature and gas stops Stay the abundant combustion decomposition of the harmful substances such as time, Shi bioxin, heavy metal.
10. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Rubbish is in gas Change and certain proportion quick lime (CaO) is added during stove pyrolytic gasification, handles the acidic materials such as SO2 during pyrolytic gasification.
11. a kind of refuse pyrolysis gasification burning chimney-free Zero discharging system as described in right 1, it is characterised in that：Fume extraction The flue gas that device extracts can also be passed through drying process of the pre-drying device for rubbish, and landfill leachate heating evaporation is concentrated Afterwards, it sprays into secondary combustion chamber to burn, by high-temperature process, while the percolate control second-time burning of the partial concentration can also be used The temperature of room.
CN201810388140.9A 2018-04-26 2018-04-26 A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system Pending CN108534142A (en)

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CN201810388140.9A CN108534142A (en) 2018-04-26 2018-04-26 A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system

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CN201810388140.9A CN108534142A (en) 2018-04-26 2018-04-26 A kind of refuse pyrolysis gasification burning chimney-free Zero discharging system

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185895A (en) * 2018-11-02 2019-01-11 重庆富燃科技股份有限公司 A kind of system and method handling the aging rubbish of landfill yard
CN110041949A (en) * 2019-05-09 2019-07-23 重庆富燃科技股份有限公司 A kind of device and method of pair of powdery (or graininess) solid matter recycling treatment
CN110513687A (en) * 2019-08-07 2019-11-29 广东工业大学 Biomass high-temperature gasification and low nitrogen burning utilization system
CN111780130A (en) * 2020-06-15 2020-10-16 上海市政工程设计研究总院（集团）有限公司 Flue gas recirculation oxygen-enriched incineration sludge and muddy water co-treatment method
CN112240557A (en) * 2020-08-26 2021-01-19 中国计量大学 Low NO for soil thermal desorptionxFlue gas heat recycling system and method
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace
CN114887471A (en) * 2022-04-28 2022-08-12 昆明理工大学 Method and system for recycling pharmaceutical waste gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185895A (en) * 2018-11-02 2019-01-11 重庆富燃科技股份有限公司 A kind of system and method handling the aging rubbish of landfill yard
CN110041949A (en) * 2019-05-09 2019-07-23 重庆富燃科技股份有限公司 A kind of device and method of pair of powdery (or graininess) solid matter recycling treatment
CN110513687A (en) * 2019-08-07 2019-11-29 广东工业大学 Biomass high-temperature gasification and low nitrogen burning utilization system
CN111780130A (en) * 2020-06-15 2020-10-16 上海市政工程设计研究总院（集团）有限公司 Flue gas recirculation oxygen-enriched incineration sludge and muddy water co-treatment method
CN112240557A (en) * 2020-08-26 2021-01-19 中国计量大学 Low NO for soil thermal desorptionxFlue gas heat recycling system and method
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace
CN114887471A (en) * 2022-04-28 2022-08-12 昆明理工大学 Method and system for recycling pharmaceutical waste gas

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