CN110205166A - A kind of solid waste refuse gasification fusing system and method - Google Patents
A kind of solid waste refuse gasification fusing system and method Download PDFInfo
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- CN110205166A CN110205166A CN201910553890.1A CN201910553890A CN110205166A CN 110205166 A CN110205166 A CN 110205166A CN 201910553890 A CN201910553890 A CN 201910553890A CN 110205166 A CN110205166 A CN 110205166A
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- 238000002309 gasification Methods 0.000 title claims abstract description 211
- 239000002910 solid waste Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 82
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 57
- 239000000428 dust Substances 0.000 claims abstract description 50
- 230000003134 recirculating effect Effects 0.000 claims abstract description 38
- 239000002918 waste heat Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 238000004064 recycling Methods 0.000 claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims description 43
- 230000008018 melting Effects 0.000 claims description 43
- 239000002893 slag Substances 0.000 claims description 35
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 239000002956 ash Substances 0.000 claims description 32
- 230000005855 radiation Effects 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 17
- 239000003818 cinder Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000006227 byproduct Substances 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- -1 house refuse Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000003546 flue gas Substances 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 description 14
- 238000000197 pyrolysis Methods 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 7
- 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 description 6
- 238000012545 processing Methods 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009272 plasma gasification Methods 0.000 description 4
- 239000004035 construction material Substances 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000007500 overflow downdraw method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention discloses a kind of solid waste refuse gasification fusing system and method, belong to environmental technology field, including sequentially connected solid waste garbage feeding unit, recirculating fluidized bed gasification unit, entrained flow gasification melt element, waste heat recycling and dust removing units and gasification gas clean unit, the waste heat recycling and dust removing units include sequentially connected gasifying agent preheater, waste heat boiler, deduster and gas cooler, the deduster bottom is connected with flying dust circulating line, the flying dust circulation line is equipped with returning charge unit, the recirculating fluidized bed gasification unit includes circle fluidized-bed gasification furnace and recirculating fluidized bed gas-solid separator, the returning charge unit is connect with the return port of the circle fluidized-bed gasification furnace.The present invention is able to achieve the large industrialized treatment scale of solid waste rubbish, overcomes that energy consumption existing for existing solid waste waste disposal method is high, the thermal efficiency is low, gasification efficiency is low, adaptability to raw material is poor, lime-ash harmless treatment is not thorough, easily carries the problem of harmful substance in flue gas secretly.
Description
Technical field
The present invention relates to a kind of solid waste refuse gasification fusing system and methods, belong to environmental technology field.
Background technique
With the implementation of increasingly harsh environmental protection policy and regulation, oil refining and chemical industry, metallurgy, papermaking and printing and dyeing how are realized
Etc. the Industrial Solid Waste that generates of industries, and it is the minimizing of the house refuse or solid waste that generate of social resident, recycling, innoxious
Processing target is the important research content of environmental technology field in recent years.
Traditional solid waste waste disposal method has landfill method and incineration method.Landfill method is big due to taking up an area, easily to underground water
Secondary pollution is caused with soil, minimizing, the recycling, harmless treatment target of solid waste rubbish is can not achieve, is phased out.
Incineration method requires the calorific value of solid waste rubbish high, and calorific value is lower or calorific value is unstable easily leads to burning and be not thorough, and generates dioxin
Equal strong carcinogens;Residue after burning still needs to be further processed, the residue especially for hazardous solid waste, after burning
Generally still fall within hazardous waste, cannot reach the target of thorough harmless treatment, traditional solid waste burning method also more and more not by
Using.
High-temperature melting method is the developing direction of solid waste technology of garbage disposal, great prospect.High-temperature melting method is to pass through heating
Solid waste rubbish reaches its fusing point temperatures above, and for the combustible component in solid waste by high-temperature gasification, the flue gas or gasification gas of generation can be into
One step recycles, and realizes recycling treatment;And solid waste residue then forms fused solution, then rapid cooling makes to be formed unformed
The solid glass body of structure, can be used as construction material, to thoroughly realize harmless treatment.Heating solid waste rubbish makes its high temperature melting
Melting mainly has three ways, such as resistance-type melting, plasma fusion, gasification and melting.Resistance-type fusion method is to make solid waste by electrode
Inside generates resistance, makes its melting using Joule heat heating solid waste rubbish, this method melting temperature, can shape at 1200-1600 DEG C
At solid waste slag vitreum, harmless processing is realized, the heat byproduct steam of high-temperature flue gas, but this method consumed electrode can be recycled
Greatly, energy consumption is high, and fixed-end forces are at high cost;Plasma fusion is to make it molten using plasma torch heats solid waste rubbish surface
Melt, equally achievable solid waste slag harmless treatment, this method consumed electrode specific resistance formula fusion method is slightly lower, but heat loss
Greatly, energy consumption is high, and plasmatorch service life is limited, it is difficult to form large industrialized treatment scale.Gasification and melting method is to utilize
Gasifying agent makes solid waste rubbish carry out pyro-oxidation-reduction gasification reaction in gasification furnace, and reaction temperature is at 1200-1600 DEG C, solid waste
Cooling and solidifying forms vitreum after slag melting, reacts the high-temperature gasification gas component of generation with CO, H2Based on, it removes and passes through by-product steaming
Vapour recycles outside heat, can also be further used as chemical industry synthesis gas or fuel gas uses, low energy consumption for this method, and the thermal efficiency is high, institute's base
In gasification reaction technology mechanism in Coal Gasification Technology field Successful utilization, there is large scale industry in solid waste garbage disposal industry
Change prospect.
Chinese invention patent application number 201711221720.0 authorizes publication number CN107957069B, authorizes publication date
The patent document of 2019-06-04 discloses a kind of refuse pyrolysis gasification system.The refuse pyrolysis gasification system includes pyrolytic gasification
Furnace, cracking combustion chamber, dust removing units, depickling unit, chimney and residual heat recovery unit, the pyrolysis gasification furnace lower end outlet
It is connected to the air inlet of cracking combustion chamber, is also connected by residual heat recovery unit between pyrolysis gasification furnace and cracking combustion chamber
It is logical;Cracking gas combustor exit is connect with dust removing units import, and dust removing units outlet is connect with depickling unit import, depickling unit
Outlet is connect with chimney.The invention is suitable for refuse pyrolysis gasification technology field, can not be categorized, dry etc. preprocessing process
Handle rubbish, can be avoided rubbish and accumulate scaffolding in pyrolysis gasification furnace, make device continuously, stable operation, raising operational efficiency,
Extend fire grate service life, reduce operating cost, can be realized modularization, the Miniaturization Design of equipment, improves equipment flexibility,
Meet the garbage disposal demand of different scales.But the invention has the disadvantage that pyrolysis gasification furnace using fixed bed pattern, gasification
Low efficiency, the type of furnace determine that the temperature of pyrolysis gasification furnace is lower (necessary below the melting temperature for entering furnace rubbish), refuse pyrolysis
Cracking slag afterwards can not carry out high-temperature fusion and then form vitreum, it is difficult to realize thorough harmless treatment;Pyrolysis gasification furnace
Higher melting-point rubbish can only be pyrolyzed, adaptability to raw material is poor;Since pyrolysis reaction temperature is low, coke is contained in cracking gas
The components such as oil, phenols, dioxin, cracking gas could discharge after must entering cracking combustion chamber full combustion, and combustion process makes
Contain CO, H2Etc. components cracking gas all burning generate with CO2、H2Flue gas based on O fails to make full use of having for cracking gas
Imitate component;It is heat-insulated using fire brick layer to crack combustion chamber, heat loss is big, and heat reuse effect is low;System is with compact apparatus
Based on design, it is difficult to meet large scale processing requirement.
Chinese invention patent application number 201810763719.9, publication number CN108826318A, publication date 2018-11-16
Patent document disclose a kind of domestic garbage treating system and life refuse processing method.The system include pretreatment unit,
Incinerator, flue gas separation unit, flue gas purification device and plasma gasification crack melting plant.The pretreatment of pretreatment unit
Garbage outlet is connected with the pretreating waste import of incinerator;The high-temperature flue gas outlet of incinerator and the gas-solid of flue gas separation unit
The gas inlet of separator is connected;First waste gas outlet of gas-solid separator and the first exhaust gas entrance phase of flue gas purification device
Even;Plasma gasification cracking melting plant includes interconnected plasma gasification cracking melting furnace and molten slag discharge
Quenching apparatus, the flying dust outlet of gas-solid separator and the first solid residue outlet of incinerator are melted with plasma gasification cracking
The plasma furnace solid waste feed inlet of furnace is connected.The gaseous effluent ingredient of generation cleans, and will not cause secondary pollution to atmosphere;
The solid product of generation can be secondary use.But the invention has the disadvantage that improve and burning furnace temperature, by plasma
The reducibility gas of gasification cracking melting outlet of still is (with CO, H2Based on) incinerator is sent into for combustion-supporting rear into flue gas emission system
System, fails the realization resource utilization of the reducibility gas;When incinerator enters, furnace MSW heating value is low or calorific value is unstable
When, it easily leads to the harmful substances such as entrainment tar, phenol, dioxin in the high-temperature flue gas of incinerator generation and enters follow-up system;Melting
Process using plasma method, energy consumption is high, and domestic rubbish disposal is at high cost, and is difficult to realize large industrialized.
Summary of the invention
1. the technical problem to be solved in the present invention
For energy consumption existing for existing solid waste waste disposal method is high, the thermal efficiency is low, gasification efficiency is low, adaptability to raw material
Difference, lime-ash harmless treatment are not thorough, easily carry harmful substance (tar, phenol, dioxin etc.) in flue gas secretly, are difficult to realize large-scale work
The problem of industry treatment scale, the present invention provide a kind of solid waste refuse gasification fusing system and method.
2. technical solution
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of solid waste refuse gasification fusing system, including sequentially connected solid waste garbage feeding unit, recirculating fluidized bed gas
Change unit, entrained flow gasification melt element, waste heat recycling and dust removing units and gasification gas clean unit, the waste heat are recycled and removed
Dirt unit includes sequentially connected gasifying agent preheater, waste heat boiler, deduster and gas cooler, and the deduster bottom connects
It is connected to flying dust circulating line, the flying dust circulation line is equipped with returning charge unit, and the recirculating fluidized bed gasification unit includes following
Ring fluidized-bed gasification furnace and recirculating fluidized bed gas-solid separator, the returning charge of the returning charge unit and the circle fluidized-bed gasification furnace
Mouth connection.
Further technical solution, the solid waste garbage feeding unit include sequentially connected feed hopper, feed lock and to
Material machine, the feed hopper are connected with solid waste refuse conveying pipe road and supplies conveyance conduit, the output channel of the batcher
It is connect with the material inlet of the circle fluidized-bed gasification furnace;It is more that the gasifying agent preheater, which is one, the waste heat boiler
For one or more, the waste heat recycling and dust removing units are equipped with one or more levels deduster.
Further technical solution, the recirculating fluidized bed gas-solid separator pass through material returning device and circle fluidized-bed gasification furnace
Bottom be connected.
Further technical solution, the entrained flow gasification melt element includes airflow bed gasification furnace, the air flow bed gas
Changing furnace is the useless pot pattern gasification furnace of uplink radiation;It from top to bottom include the radiation waste being sequentially connected in the airflow bed gasification furnace
Pot, gasification and melting room and dreg cooling chamber, the output channel of the dreg cooling chamber are connect with dreg-locking hopper, and the output channel of the dreg-locking hopper is logical
Enter in slag bath;One or more burners are installed in the middle and lower part of the gasification and melting room, the burner with it is described ciculation fluidized
Gasification gas output channel connection at the top of bed gas-solid separator.
Further technical solution further includes gasifying agent conveyance conduit, and the gasifying agent conveyance conduit passes through the gasification
It is divided into the first branch and second branch after agent preheater, the first branch is connect with the burner, and the second branch is logical
Enter the bottom of the circle fluidized-bed gasification furnace.
Further technical solution, the returning charge unit include sequentially connected cinder tank, grey slag bucket, grey slag lock and lime-ash
Conveyer, the cinder tank are connect with the flying dust circulation line, the output channel of the ash conveyor and the recycle stream
Change the material inlet connection of bed gasification furnace;The bottom of the circle fluidized-bed gasification furnace is equipped with the outlet of gasification slag, and the gasification slag goes out
Mouth is connect with the cinder tank.
A kind of solid waste refuse gasification melting method, comprising the following steps:
Step 1: ciculation fluidized reaction: solid waste rubbish and gasifying agent being sent into circle fluidized-bed gasification furnace, aoxidize also
Original reaction;The gasification gas and fly ash granule that circle fluidized-bed gasification furnace generates isolate big portion through recirculating fluidized bed gas-solid separator
Swarming ash particle, isolated fly ash granule through material returning device sends circle fluidized-bed gasification furnace back to, and the reaction was continued, the gasification gas after separation
It carries a small amount of flying dust secretly and enters entrained flow gasification melt element;The recirculating fluidized bed gasification slag that reaction generates is discharged from furnace bottom;
Step 2: entrained flow gasification frit reaction: the gasification gas entrainment of recirculating fluidized bed gas-solid separator outlet is a small amount of to fly
Ash enters the gasification and melting room of airflow bed gasification furnace through burner together with gasifying agent, carries out gasification and melting reaction;Reaction generates
High-temperature gasification gas with reproducibility component CO, H2Based on, enter after being above advanced into radiation waste pot by-product high-pressure steam recycling heat
Waste heat recycling and dust removing units, react and are advanced into dreg cooling chamber under the liquid molten lime-ash of generation, form vitreum after cooling and solidifying
Lime-ash drains into slag bath through dreg-locking hopper;
Step 3: waste heat recycling and dust separation: radiation waste pot outlet gasification gas through waste heat recycling and deduster after, into
Enter to gasify gas clean unit, and obtained purified gasification gas is with reproducibility component CO, H2Based on, it send to rear workshop section;
Step 4: flying dust circular response: the circulation flying dust that deduster separates and collects is sent into recirculating fluidized bed through returning charge unit
Gasification furnace further reacts.
Further technical solution, at 20-100 times, reaction temperature exists the circulating ratio of the circle fluidized-bed gasification furnace
700-1100, reaction pressure is in 0-1.2Mpa;The gasification and melting room reaction temperature of the airflow bed gasification furnace is in 1200-1650
DEG C, reaction pressure is in 0-1.2Mpa;The radiation waste pot byproduct steam pressure is in 4-10MPa, radiation waste pot outlet gasification temperature
Degree is at 600-800 DEG C.
Supplies are sent into recirculating fluidized bed gasification by further technical solution, the solid waste garbage feeding system together
Furnace;The recirculating fluidized bed gasification slag drains into cinder tank, then enters circle fluidized-bed gasification furnace by lime-ash revert system;It is described
Dreg cooling chamber's water quenching liquid molten lime-ash, makes it be solidified into innoxious glass volume morphing.
Further technical solution, partial size as defined in the solid waste rubbish are 0-10mm;The calorific value of the solid waste rubbish is high
In 2000kCal/kg;The solid waste rubbish is biomass, in oily sludge, industrial boiler ash sediment, house refuse, solid dangerous waste
It is one or more;The gasifying agent is the mixed gas of vapor and oxygen-containing gas, and the oxygen-containing gas is air, oxygen-enriched sky
One of gas, pure oxygen are a variety of.
3. beneficial effect
Technical solution provided by the invention has the advantages that compared with prior art
(1) solid waste rubbish is first sent into recirculating fluidized bed gasification unit and carries out redox reaction by the present invention, ciculation fluidized
Bed gasification furnace reaction temperature is high, and circulating ratio is high, improves solid waste refuse gasification efficiency, and be substantially free of in the gasification gas generated
The harmful substances such as tar, phenol, dioxin;
(2) the unvaporized flying dust of gasification gas and its entrainment that recirculating fluidized bed gasification generates is sent into air flow bed by the present invention
Melting furnace further reacts, and gasification and melting temperature is high, completely eliminates micro tar, phenol, dioxin etc. in gasification gas
Harmful substance, and be innoxious vitreum in dreg cooling chamber's cooling and solidifying, it is finally discharged through dreg-locking hopper and slag bath, can be used as building
Materials'use realizes the innoxious and recycling treatment of solid waste rubbish;
(3) airflow bed gasification furnace of the present invention is using the useless pot pattern of uplink radiation, the high-temperature gasification gas that gasification and melting room generates
Uplink carries out radiation waste pot, and dreg cooling chamber is advanced under the liquid molten lime-ash of generation, and the flow direction of gasify gas and molten ash is just
On the contrary, efficiently separating gasification gas and molten ash, the operation stability of entrained flow gasification melt element is improved, it is easy to accomplish
The large industrialized of solid waste garbage disposal;
(4) airflow bed gasification furnace of the present invention is using the useless pot pattern of uplink radiation, the high-temperature gasification gas that gasification and melting room generates
Uplink carries out radiation waste pot, and by-product 4-10MPa steam, heat recovery is abundant, improves the thermal efficiency of gasified melting system, improves
The economy of processing solid waste rubbish;
(5) the purified gasification gas that present invention gasification gas clean unit generates is with reproducibility component CO, H2Based on, it can make
It is used for chemical industry synthesis gas or fuel gas, realizes the processing of solid waste garbage as resource;
(6) it is further to enter recirculating fluidized bed gasification unit for the flying dust that waste heat recycling of the present invention and dust removing units separate and collect
Gasification, theoretically realizes flying dust zero-emission, avoids secondary pollution;
(7) waste heat recycling of the present invention and dust removing units are equipped with one or more gasifying agent preheater and waste heat boiler, reduce
Gasifying agent consumption, improves vapor byproduct amount, also further reduced energy consumption;
(8) fly ash content is lower than 10mg/Nm in the gasification gas of waste heat recycling and dust removing units outlet of the present invention3, clean journey
Degree is high;
(9) present invention can send recirculating fluidized bed gasification slag back to recirculating fluidized bed gas by cinder tank and lime-ash revert system
Change furnace, the lime-ash for generating solid waste rubbish during gasification reaction passes through entrained flow gasification melt element all with the glass bodily form
State discharge can be used as construction material use, realize the thorough innoxious and recycling treatment of solid waste rubbish;
(10) supplies can be sent into recirculating fluidized bed gasification unit by the present invention together with solid waste rubbish, improve solid waste
The vitrifying degree of rubbish slag realizes the harmless treatment of solid waste rubbish;
(11) the solid waste rubbish particle size range that the present invention adapts to is wide (0-10mm);The calorific value of the solid waste rubbish of adaptation requires low
(being higher than 2000kCal/kg), also, according to the supplies calorific value being added, the calorific value that can further decrease solid waste rubbish is wanted
It asks;Accessible solid waste rubbish type extensively (biomass, oily sludge, industrial boiler ash sediment, house refuse, in solid dangerous waste
It is one or more), solve the problems, such as that adaptability to raw material is poor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram of solid waste refuse gasification fusing system and method for the invention;
In figure, 1, recirculating fluidized bed gasification unit;2, entrained flow gasification melt element;3, waste heat recycling and dust removing units;
4, gasify gas clean unit;5, solid waste garbage feeding unit, 6. returning charge units;101, circle fluidized-bed gasification furnace;102, it recycles
Fluidized bed gas-solid separator;103, material returning device;104, solid waste refuse conveying pipe road;105, supplies conveyance conduit;106, gas
Agent conveyance conduit;201, radiation waste pot;202, gasification and melting room;203, dreg cooling chamber;204, dreg-locking hopper;205, slag bath;206,
Burner;207, airflow bed gasification furnace;301, gasifying agent preheater;302, waste heat boiler;303, deduster;304, gas cooling
Device;501, feed hopper;502, feed lock;503, batcher;601, cinder tank;602, grey slag bucket;603, grey slag lock;604, lime-ash
Conveyer
Specific embodiment
Below in conjunction with the specific embodiment of the invention, technical solution of the present invention is clearly and completely described, is shown
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
As shown in Figure 1, the present embodiment provides a kind of solid waste refuse gasification fusing system, including sequentially connected solid waste rubbish
Feeder unit 5, recirculating fluidized bed gasification unit 1, entrained flow gasification melt element 2, waste heat recycling and dust removing units 3 and gasification gas
Clean unit 4, waste heat recycling and dust removing units 3 include sequentially connected gasifying agent preheater 301, waste heat boiler 302, deduster
303 and gas cooler 304,303 bottom of deduster is connected with flying dust circulating line, and flying dust circulation line is equipped with returning charge unit
6, recirculating fluidized bed gasification unit 1 includes circle fluidized-bed gasification furnace 101 and recirculating fluidized bed gas-solid separator 102, described to return
Material unit 6 is connect with the return port of circle fluidized-bed gasification furnace 101.
Wherein, solid waste garbage feeding unit 5 includes sequentially connected feed hopper 501, feed lock 502 and batcher 503, is given
The output channel of material machine 503 is connect with the material inlet of circle fluidized-bed gasification furnace 101, and it is defeated that feed hopper 501 is connected with solid waste rubbish
Send pipeline 104 and supplies conveyance conduit 105.In the present invention, the supplies refer to that peomoting solid waste rubbish exists
Airflow bed gasification furnace forms the substance of innoxious vitreum, particularly, one of cinder, river sand or lime stone after referring to gasification
Or it is several.According to the calorific value of the supplies, the calorific value requirement of solid waste rubbish can be further decreased, the original of solid waste rubbish is widened
Expect adaptability.
In the present invention, waste heat recycling and dust removing units 3 can be equipped with one or more gasifying agent preheater 301, will gasify
Agent is preheated to 400-700 DEG C;It can also be equipped with one or more waste heat boiler 302, gasification gas heat is recycled by byproduct steam.It is remaining
Recuperation of heat and dust removing units 3 are equipped with one or more levels deduster 303, make to fly in the gasification gas that waste heat recycles and dust removing units export
Ash content is lower than 10mg/Nm3。
Wherein, recirculating fluidized bed gas-solid separator 102 passes through the bottom of material returning device 103 and circle fluidized-bed gasification furnace 101
It is connected.
Wherein, entrained flow gasification melt element 2 includes airflow bed gasification furnace 207, and airflow bed gasification furnace 207 is uplink radiation
Useless 201 pattern gasification furnace of pot;It from top to bottom include radiation waste pot 201, the gasification and melting being sequentially connected in airflow bed gasification furnace 207
The output channel of room 202 and dreg cooling chamber 203, dreg cooling chamber 203 is connect with dreg-locking hopper 204, and the output channel of dreg-locking hopper 204 is passed through slag
In pond 205;The middle and lower part of gasification and melting room 202 is installed by one or more burners 206, burner 206 and recirculating fluidized bed gas
The gasification gas output channel connection at 102 top of solid separator.
It wherein, further include gasifying agent conveyance conduit 106, gasifying agent conveyance conduit 106 passes through the gasifying agent preheater 301
After be divided into the first branch and second branch, the first branch is connect with burner 206, and second branch is passed through circle fluidized-bed gasification furnace
101 bottom.
Wherein, returning charge unit 6 includes sequentially connected cinder tank 601, grey slag bucket 602, grey slag lock 603 and ash conveyor
604, cinder tank 601 is connect with flying dust circulation line, the output channel and circle fluidized-bed gasification furnace 101 of ash conveyor 604
Material inlet connection;The bottom of circle fluidized-bed gasification furnace 101 is equipped with the outlet of gasification slag, and the outlet of gasification slag connects with cinder tank 601
It connects.
The present embodiment is simultaneously provided using above-mentioned solid waste refuse gasification fusing system progress solid waste refuse gasification melting method,
Include the following steps:
Step 1: ciculation fluidized reaction: granularity is the rotary kiln clinker of 0-10mm as solid waste garbage raw material, passes through solid waste
Garbage feeding system enters 101 bottom of circle fluidized-bed gasification furnace, and (90% oxygen-enriched air and water steams with the gasifying agent after preheating
Gas) carry out redox reaction in furnace, reaction pressure 0.5MPa, 900 DEG C of reaction temperature;The gasification gas and solid particle of generation
Into recirculating fluidized bed gas-solid separator 102, most of solid particle is separated and passes through material returning device 103 into recycle stream
Change 101 cycle gasification of bed gasification furnace;
Step 2: entrained flow gasification frit reaction: the gasification gas of gas-solid separator outlet and its unvaporized of entrainment fly
Gasifying agent (weight ratio of 90% oxygen-enriched air and vapor, oxygen-enriched air and vapor is 2:1) after ash and preheating is together
Through burner 206 enter 207 gasification and melting room 202 of airflow bed gasification furnace carry out gasification and melting reaction, reaction temperature at 1500 DEG C,
Reaction pressure is advanced into radiation waste pot 201 on 0.35MPa, the high-temperature gasification gas of generation, and by-product 4MPa saturated vapor, gasify gas
Own temperature is reduced to 700 DEG C, and dreg cooling chamber 203 is advanced under the liquid molten lime-ash of generation, and lime-ash is formed by water quenching cold curing
Vitreum lime-ash drains into slag bath 205 through dreg-locking hopper 204, sends outside after collection and use as construction material;
Step 3: waste heat recycling and dust separation: the gasification gas that radiation waste pot 201 exports enters gasifying agent preheater 301,
After gasifying agent (weight ratio of 90% oxygen-enriched air and vapor, oxygen-enriched air and vapor is 2:1) is preheated to 650 DEG C, gas
Change gas is cooled to 300 DEG C and further recycles heat into 302 by-product 0.5MPa saturated vapor of waste heat boiler, and waste heat boiler 302 goes out
Implication temperature degree is at about 180 DEG C;Then through gas cooler 304 and gasification gas clean unit 4, obtained purified gasification
Gas is with reproducibility component CO, H2Based on, it send to rear workshop section;
Step 4: flying dust circular response: separating and collecting flying dust through deduster 303, the gasification gas fly ash content after dedusting
Lower than 10mg/Nm3, the circulation flying dust of collection sends 101 cycle gasification of circle fluidized-bed gasification furnace back to, without outlet.Also, it recycles
Fluidized gasification slag drains into cinder tank 503, then also enters circle fluidized-bed gasification furnace 101 together by lime-ash revert system;
The gasification slag of 101 bottom of the present embodiment circle fluidized-bed gasification furnace discharge belongs to general solid waste, follows without being re-fed into
Ring fluidized bed, directly sends outside.
Embodiment 2
The solid waste refuse gasification fusing system and method for the present embodiment, using oily sludge as solid waste garbage raw material, base
This production procedure is different and the improvement is that with embodiment 1, by be added supplies (the present embodiment using lime stone and
The mixture of river sand matches 30:70), the vitrifying degree of waste residue after oily sludge gasification is improved, reacts it through gasification and melting
Stable vitreum is formed afterwards.In addition, the weight ratio of mixed gas of the gasifying agent for pure oxygen and vapor, pure oxygen and vapor is
1.5:1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of solid waste refuse gasification fusing system, it is characterised in that: including sequentially connected solid waste garbage feeding unit, circulation
Fluid bed gasification unit, entrained flow gasification melt element, waste heat recycling and dust removing units and gasification gas clean unit, the waste heat
Recycling and dust removing units include sequentially connected gasifying agent preheater, waste heat boiler, deduster and gas cooler, the dedusting
Device bottom is connected with flying dust circulating line, and the flying dust circulation line is equipped with returning charge unit, and the recirculating fluidized bed gasification is single
Member includes circle fluidized-bed gasification furnace and recirculating fluidized bed gas-solid separator, and the returning charge unit and the recirculating fluidized bed gasify
The return port of furnace connects.
2. a kind of solid waste refuse gasification fusing system according to claim 1, it is characterised in that: the solid waste garbage feeding
Unit includes that sequentially connected feed hopper, feed lock and batcher, the feed hopper are connected with solid waste refuse conveying pipe road and auxiliary
Material conveying pipe is helped, the output channel of the batcher is connect with the material inlet of the circle fluidized-bed gasification furnace;The gas
It is more that agent preheater, which is one, and the waste heat boiler is one or more, and the waste heat recycling and dust removing units are equipped with one
Grade or multistage rotary dust collector.
3. a kind of solid waste refuse gasification fusing system according to claim 1, it is characterised in that: the recirculating fluidized bed gas
Solid separator is connected by material returning device with the bottom of circle fluidized-bed gasification furnace.
4. a kind of solid waste refuse gasification fusing system according to claim 1, it is characterised in that: the entrained flow gasification is molten
Melting unit includes airflow bed gasification furnace, and the airflow bed gasification furnace is the useless pot pattern gasification furnace of uplink radiation;The air flow bed gas
Change includes radiation waste pot, gasification and melting room and the dreg cooling chamber being sequentially connected, the output channel of the dreg cooling chamber in furnace from top to bottom
It is connect with dreg-locking hopper, the output channel of the dreg-locking hopper is passed through in slag bath;The middle and lower part of the gasification and melting room install one or
Multiple burners, the burner are connect with the gasification gas output channel at the top of the recirculating fluidized bed gas-solid separator.
5. a kind of solid waste refuse gasification fusing system according to claim 4, it is characterised in that: further include gasifying agent conveying
Pipeline, the gasifying agent conveyance conduit is by being divided into the first branch and second branch after the gasifying agent preheater, and described first
Branch is connect with the burner, and the second branch is passed through the bottom of the circle fluidized-bed gasification furnace.
6. a kind of solid waste refuse gasification fusing system according to claim 1, it is characterised in that: the returning charge unit includes
Sequentially connected cinder tank, grey slag bucket, grey slag lock and ash conveyor, the cinder tank are connect with the flying dust circulation line,
The output channel of the ash conveyor is connect with the material inlet of the circle fluidized-bed gasification furnace;The recirculating fluidized bed gasification
The bottom of furnace is equipped with the outlet of gasification slag, and the gasification slag outlet is connect with the cinder tank.
7. a kind of solid waste refuse gasification melting method, which comprises the following steps:
Step 1: ciculation fluidized reaction: solid waste rubbish and gasifying agent being sent into circle fluidized-bed gasification furnace, it is anti-to carry out redox
It answers;The gasification gas and fly ash granule that circle fluidized-bed gasification furnace generates isolate most of fly through recirculating fluidized bed gas-solid separator
Ash particle, isolated fly ash granule through material returning device sends circle fluidized-bed gasification furnace back to, and the reaction was continued, the gasification gas entrainment after separation
A small amount of flying dust enters entrained flow gasification melt element;The recirculating fluidized bed gasification slag that reaction generates is discharged from furnace bottom;
Step 2: entrained flow gasification frit reaction: the gasification gas of recirculating fluidized bed gas-solid separator outlet carries a small amount of flying dust warp secretly
Burner enters the gasification and melting room of airflow bed gasification furnace together with gasifying agent, carries out gasification and melting reaction;React the height generated
Wet gas is with reproducibility component CO, H2Based on, enter waste heat after being above advanced into radiation waste pot by-product high-pressure steam recycling heat
Recycling and dust removing units, react and are advanced into dreg cooling chamber under the liquid molten lime-ash of generation, and vitreum lime-ash is formed after cooling and solidifying,
Slag bath is drained into through dreg-locking hopper;
Step 3: waste heat recycling and dust separation: the gasification gas of radiation waste pot outlet is after waste heat recycling and deduster, into gas
Change gas clean unit, obtained purified gasification gas is with reproducibility component CO, H2Based on, it send to rear workshop section;
Step 4: flying dust circular response: the circulation flying dust that deduster separates and collects is sent into recirculating fluidized bed gasification through returning charge unit
Furnace further reacts.
8. a kind of solid waste refuse gasification melting method according to claim 6, it is characterised in that: the recirculating fluidized bed gas
Change the circulating ratio of furnace at 20-100 times, reaction temperature is in 700-1100, and reaction pressure is in 0-1.2Mpa;The entrained flow gasification
The gasification and melting room reaction temperature of furnace is at 1200-1650 DEG C, and reaction pressure is in 0-1.2Mpa;The radiation waste pot byproduct steam pressure
Power is in 4-10MPa, and gasification temperature degree in radiation waste pot outlet is at 600-800 DEG C.
9. a kind of solid waste refuse gasification melting method according to claim 6, it is characterised in that: the solid waste garbage feeding
Supplies are sent into circle fluidized-bed gasification furnace by system together;The recirculating fluidized bed gasification slag drains into cinder tank, then passes through
Lime-ash revert system enters circle fluidized-bed gasification furnace;Dreg cooling chamber water quenching liquid molten lime-ash, makes it be solidified into nothing
The glass volume morphing of evilization.
10. a kind of solid waste refuse gasification melting method according to claim 6, it is characterised in that: the solid waste rubbish
Partial size is in 0-10mm;The calorific value of the solid waste rubbish is higher than 2000kCal/kg;The solid waste rubbish be biomass, oily sludge,
One of industrial boiler ash sediment, house refuse, solid dangerous waste are a variety of;The gasifying agent is the mixing of vapor and oxygen-containing gas
Gas, the oxygen-containing gas are one of air, oxygen-enriched air, pure oxygen or a variety of.
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CN110437853A (en) * | 2019-09-12 | 2019-11-12 | 四川火尔赤清洁能源有限公司 | Garbage decomposition processing system |
CN111234880A (en) * | 2019-10-08 | 2020-06-05 | 邰学林 | Clean resource treatment method for solid waste and hazardous waste |
WO2022082889A1 (en) * | 2020-10-23 | 2022-04-28 | 江苏天楹等离子体科技有限公司 | Novel integrated system for online coupling of hazardous waste combustion and plasma melting |
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CN107384487A (en) * | 2017-07-05 | 2017-11-24 | 中国华能集团清洁能源技术研究院有限公司 | A kind of tower useless Cooker structure gasification furnace |
CN208776672U (en) * | 2018-08-22 | 2019-04-23 | 安徽科达洁能股份有限公司 | A kind of manifold type gasification system |
CN210176803U (en) * | 2019-06-25 | 2020-03-24 | 河南信祥环境科技有限公司 | Solid waste gasification melting system |
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CN107384487A (en) * | 2017-07-05 | 2017-11-24 | 中国华能集团清洁能源技术研究院有限公司 | A kind of tower useless Cooker structure gasification furnace |
CN208776672U (en) * | 2018-08-22 | 2019-04-23 | 安徽科达洁能股份有限公司 | A kind of manifold type gasification system |
CN210176803U (en) * | 2019-06-25 | 2020-03-24 | 河南信祥环境科技有限公司 | Solid waste gasification melting system |
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CN110437853A (en) * | 2019-09-12 | 2019-11-12 | 四川火尔赤清洁能源有限公司 | Garbage decomposition processing system |
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