CN108397777B - A kind of domestic garbage gasification electricity generation system - Google Patents
A kind of domestic garbage gasification electricity generation system Download PDFInfo
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- 238000002309 gasification Methods 0.000 title claims abstract description 111
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 63
- 230000005611 electricity Effects 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 22
- 238000007781 pre-processing Methods 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 claims abstract description 17
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 13
- 238000005325 percolation Methods 0.000 claims abstract description 12
- 238000004064 recycling Methods 0.000 claims abstract description 11
- 230000003197 catalytic effect Effects 0.000 claims abstract description 10
- 238000010926 purge Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 104
- 238000012216 screening Methods 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 19
- 238000003786 synthesis reaction Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 238000011026 diafiltration Methods 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 29
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 239000000149 chemical water pollutant Substances 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000012141 concentrate Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000053 physical method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000000354 decomposition reaction Methods 0.000 description 1
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- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 150000002013 dioxins Chemical group 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
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- 230000002588 toxic effect Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
-
- 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
- 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
- F23G2201/00—Pretreatment
- F23G2201/20—Dewatering by mechanical means
-
- 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
- F23G2201/302—Treating pyrosolids
-
- 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
- F23G2201/303—Burning pyrogases
-
- 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
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of domestic garbage gasification electricity generation systems, including wastes pre-processing system, wastes pre-processing system divides two-way, it is connect all the way with the percolation liquid treating system with MVR system, another way is connect with refuse gasification tar catalysis system, refuse gasification tar catalysis system includes the gasification furnace that outlet is provided with tar catalytic bed, the entrance of gasification furnace is connect with wastes pre-processing system, the outlet of gasification furnace divides two-way, it is connect all the way with percolation liquid treating system, for realizing garbage harmless and recycling treatment, another way is connect by being provided with the gas purge system of level-one gas-gas heat exchanger and second level gas-gas heat exchanger with internal combustion engine power generation and afterheat utilizing system, for exchange heat and carrying out combustion power generation by internal combustion unit.Realize refuse gasification power generation harmless treatment and high-efficiency resource recycling.
Description
Technical field
The invention belongs to refuse gasification power generation and harmless treatment and the application technology as the second resource fields of percolate, specifically relate to
And a kind of domestic garbage gasification electricity generation system.
Background technique
Due to the raising of process of industrialization, in recent years, whole world house refuse annual growth rate is very fast, life in China rubbish
Annual growth is higher, becomes pollution environment, water resource, endangers the hidden danger of human survival.
The processing main method of rubbish is landfill at present, partially uses burning disposal, uses compost formal layout on a small quantity.Landfill
Large amount of land resources are occupied with compost method, landfill is also not carried out the minimizing and recycling of rubbish.And burning process is easily
Generate secondary pollution, release dioxin, polycyclic aromatic hydrocarbon compounds, particulate matter (PM), the smelly property gas of acid, toxic heavy metal Hg, Pb,
The polluters such as cr, it is difficult to meet " minimizing, innoxious, recycling " processing target of rubbish.
Refuse gasification generation technology has certain requirement to the moisture content and dregs of rubbish, if the moisture content or slag of rubbish
Native content is higher, not can guarantee the calorific value of the temperature of gasification furnace and the synthesis gas of generation.
At the same time, a large amount of percolate can be generated in garbage collection storage and transport process, landfill leachate is a kind of highly concentrated
Organic wastewater is spent, water-quality constituents is complicated, the ammonia nitrogen containing high concentration and miscellaneous organic pollutant.Pass through the side such as infiltration
Formula, percolate can cause serious water pollution to surrounding, wherein diafiltration flow quantity and speed, the property of rubbish and heap buried time
All affect pollution level.For the current Technology of Landfill Leachate in China still in developing stage, the running cost for handling percolate is expensive, and manages
Reason ability is not perfect enough, so if water quality, by leachate contamination, processing difficulty is significantly larger than general water quality.And it is seeped
The water quality of filtrate contamination can lose utility value, seriously affect people's health problem.
The processing of concentrate both at home and abroad at present has recharge, burning, solidification, distillation dry and the methods of vacuum drying, but with
Recharge method is compared, and the equipment investment of other methods and operating cost are all very expensive, but recharge cannot completely eliminate percolate, still
There are the processing such as part percolate palpus outlet, and the continuous circulation due to percolate in waste layer, will lead to its ammonia nitrogen, a huge sum of money
Belong to the continuous accumulation with salt.Therefore, it must be taken into consideration when how economically and quickly processing landfill leachate is also garbage disposal
The problem of.
Further, since the temperature of gasification furnace is higher during refuse gasification, tar is in gaseous state at high temperature, with gasification gas
It can be thoroughly mixed, gasification furnace, which is worked off one's feeling vent one's spleen, to be sent in heat exchanger or cooling tower cooling procedure, measures tar precipitation greatly, and gasify outlet of still
Pipeline is easy to be blocked by tar；Therefore, how to promote what be must be taken into consideration in the conversion and refuse gasification power generation process of tar to ask
Topic.
During refuse gasification, due to excess oxygen, it is easy to produce dioxin.The mechanism that dioxin generates mainly has " three
Kind mode ": pyrolyzing synthesis, generates precursor synthesis again.Organic matter containing benzene first generates " preceding because being thermally decomposed
Drive body " substance is for example all kinds of to contain Chlorobenzene, anti-by a series of chlorinations, condensation, oxidation etc. in 580~680 DEG C of temperature ranges
It should generate；Temperature is down to 250~450 DEG C of sections, and the organic matter thoroughly decomposed exists by the chemical reaction of a series of complex
Also dioxin can be recombined under the catalysis of some metals.Therefore, the production quantity of dioxin in whole system how is controlled
It is to have to consider the problems of in refuse gasification power generation process.
In order to avoid these types of generating mode, be set as high temperature in refuse gasification hearth layer, from gasification furnace come out after synthesis
Gas removes dioxin under low temperature environment and generates the catalyst needed, thus control two by deduster after first-class heat exchanger
The generation of English is disliked, dioxin is catalytically decomposed by SCR device for the dioxin that gasification and level-one heat exchange stage may generate,
Therefore, gasification&melting technology is used for China's garbage disposal, needs to solve following problems:
1, how low cost improve China's crude waste calorific value；
2, the percolate of house refuse generation how is handled；
3, the foul smell generated during drying garbage how is handled；
4, the production quantity for how controlling dioxin and tar meets air-intake of combustion engine requirement；
5, the energy consumption of whole system how is reduced, realizes efficient innoxious garbage disposal.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of house refuse
Gasification power generation system realizes refuse gasification power generation harmless treatment and high-efficiency resource recycling.
The invention adopts the following technical scheme:
A kind of domestic garbage gasification electricity generation system, including wastes pre-processing system, wastes pre-processing system divide two-way, all the way
It is connect with the percolation liquid treating system with MVR system, another way is connect with refuse gasification tar catalysis system, and refuse gasification is burnt
Oily catalysis system includes the gasification furnace that outlet is provided with tar catalytic bed, and the entrance of gasification furnace is connect with wastes pre-processing system,
The outlet of gasification furnace divides two-way, connect all the way with percolation liquid treating system, for realizing garbage harmless and recycling treatment, separately
Through the gas purge system for being provided with level-one gas-gas heat exchanger and second level gas-gas heat exchanger and internal combustion engine power generation and waste heat all the way
It is connected using system, for exchange heat and carrying out combustion power generation by internal combustion unit.
Specifically, wastes pre-processing system includes house refuse feed bin, the outlet of house refuse feed bin and refuse classification are broken
The entrance of broken pressurizing unit connects, and the outlet that refuse classification is crushed pressurizing unit divides two-way, and percolate outlet is handled with percolate
System connection, another way outlet is connected by the entrance of drying garbage screening plant and gasification furnace, for it will dry screening after
Rubbish, which is sent into gasification furnace, to gasify.
Further, the drying gas entrance connection level-one gas-gas heat exchanger and second level gas-gas heat exchange of drying garbage screening plant
Device, for the high-temperature oxygen-enriched of the dry needs of the gas that gasifies to be sent into after level-one gas-gas heat exchanger and the heat exchange of second level gas-gas heat exchanger
It realizes in drying garbage screening plant and is dried in screening.
Specifically, one end of level-one gas-gas heat exchanger and second level gas-gas heat exchanger is connect with air feed and oxygen enrichment system, it is another
End is connect with the entrance of gasification furnace, is sent into gasification furnace for the foul smell after drying and is done fluidized gas, as refuse gasification synthesizes
Gas enters gasification furnace gasification, and combustion.
Specifically, percolation liquid treating system includes MVR processing unit, the entrance of MVR processing unit passes through diafiltration liquid storage tank
Pond is connect with wastes pre-processing system, and the outlet of MVR processing unit is connect with the entrance of diafiltration concentrated liquor processing unit, is percolated
The outlet of concentrated liquor processing unit is connected by the feed inlet of blender and gasification furnace.
Further, screening plant is provided at the slag outlet of gasification furnace, the outlet of screening plant and percolate are concentrated
The entrance of liquid processing device connects, and the boil-off gas outlet of diafiltration concentrated liquor processing unit and the entrance of RO processing unit connect
It connects.
Further, screening plant is connected with slag cooler for cooling recycling.
Further, compressor, an internal combustion not generated electricity in compressor and internal combustion unit are provided in MVR processing unit
Machine connection, for providing energy for compressor.
Specifically, the entrance of the syngas outlet connection level-one gas-gas heat exchanger of gasification furnace, the conjunction of level-one gas-gas heat exchanger
The entrance of connection deduster is exported at gas, the entrance of the outlet connection SCR device of deduster, the outlet of SCR device connects second level
The outlet of the entrance of gas-gas heat exchanger, second level gas-gas heat exchanger is connect with internal combustion unit.
Further, deacidifying device is provided between second level gas-gas heat exchanger and internal combustion unit, second level gas-gas heat exchanger
Outlet connection deacidifying device entrance, deacidifying device outlet connection internal combustion unit entrance, the exhanst gas outlet of internal combustion unit with
The entrance of afterheat utilizing system connects.
Compared with prior art, the present invention at least has the advantages that
A kind of domestic garbage gasification electricity generation system of the present invention, improves refuse thermal value by pre-treating technology, gasification furnace is adopted
It is decomposed with the dioxin of gasification furnace+tar catalytic bed catalytic gasification system, generation by SCR system, synthesis needs under low temperature
Catalyst is also removed in deduster, to meet air-intake of combustion engine requirement.Landfill leachate is passed through at MVR system
Reason, using MVR technology, the diafiltration concentrated liquor of MVR outflow, the clinker after being sized is heated, and the gas of evaporation enters RO system
Processing, solid residue and residue are sent into gasification furnace burning after mixing in blender, realize landfill leachate harmless treatment,
The energy that compressor needs in MVR system does not need to consume additional energy, liquid is concentrated in landfill leachate from internal combustion unit
Concentration absorption is carried out by the suitable high temperature furnace slag of grain diameter after the screening of addition gasification furnace exit, the steam of generation enters
RO system, remaining concentrate carry out harmless treatment as high temperature furnace slag returns to refuse gasification boiler.
Further, since China's crude waste complicated component, moisture content are high, it is unable to satisfy refuse gasification power generation
Basic need, rubbish preconditioning technique of the invention merge dry and screening process, are being lifted into gasification power generation system rubbish
On the basis of rubbish calorific value, equipment investment is reduced, reduces floor space.
Further, drying garbage can generate foul smell, contain the odorants such as hydrogen sulfide, methyl mercaptan, methyl sulfide in foul smell,
There are also the combustable organics substance such as alkane, benzene homologues, halogenated hydrocarbons, common Deodor method mainly have physical method, chemical method with
And bioanalysis.Physical method and chemical method investment cost and operating cost are higher, and biological deodorizing hair has treatment effeciency height, without two
Secondary pollution, the advantages such as equipment is simple, but biological treatment process is designed into gas, liquid, solid phase mass transfer and biochemical degradation process, grinds at present
Study carefully it is less deep, and the present invention utilize gasification high-temperature oxygen-enriched environment, in foul smell under the action of tar catalytic bed
The substances such as foul gas or alkane, benzene homologues are catalytically decomposed, and the synthesis gas of generation is after gas purification in internal combustion engine
Combustion power generation, to realize the efficient utilization of material.
Further, since in percolate treatment process, the concentrate of generation 13%~30% is returned in the processing of percolate
Filling is one of current domestic widely applied diafiltration concentrated liquor processing method, and recharging technique can promote the degradation of organic matter,
But will lead to the enrichment of water outlet COD, conductivity and NH4+, Cl- etc., it also will cause underground water pollution；It is percolated liquid pollution-free
Processing can be divided into physical method and two kinds of chemical method, but exist and not enough thoroughly or compare to pollutant removal and rely on operating condition etc. and ask
The problems such as topic, traditional membrane separation process, biochemical treatment process is high there is also processing cost after dilution.And the present invention utilizes refuse gasification
Energy source of the high temperature furnace slag generated in the process as diafiltration concentrated liquor realizes percolate concentration by multiple-effect evaporation
Percolate after concentration is passed through in furnace again later and carries out combustion decomposition by the concentration of liquid, thoroughly decomposes wherein difficult to degrade organic
Object, and heavy metal therein is had cured by slag, realize the harmless treatment of percolate.
Further, after gasification furnace be equipped with level-one gas-gas heat exchanger, by the heat of high-temperature synthesis gas give gasification, drying and
Oxygen-enriched required for SCR device, the medium temperature synthesis gas after heat exchange is passed through SCR device for dioxin catalysis point after deduster
Solution, remaining heat transfer is utilized, reduce while realizing energy utilization and control entire system using secondary heat exchanger
The production quantity of dioxin in system.
Further, gasification furnace exiting syngas is passed through deduster and removes flying dust, removal into after crossing level-one gas-gas heat exchanger
Dioxin catalyzes and synthesizes the catalyst of needs under low temperature, and synthesis gas decomposes dioxin using SCR device, removes raw in synthesis gas
At dioxin, to meet air-intake of combustion engine requirement.
Further, it is handled in landfill leachate using MVR technology, compressor needs to provide additional in MVR system
Energy secondary steam is compressed.And the present invention sorts an internal combustion engine from internal combustion unit and is connected with compressor, is not required to
Additional energy is consumed, capacity usage ratio and system whole efficiency are improved.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is invention system schematic diagram.
Wherein: 1. house refuse feed bins；2. refuse classification is crushed pressurizing unit；3. drying garbage screening plant；4. gasification
Furnace；5. level-one gas-gas heat exchanger；6. deduster；7.SCR device；8. second level gas-gas heat exchanger；9. deacidifying device；10. internal combustion engine
Group；11. residual heat using device；12. being percolated liquid storage tank pond；13.MVR processing unit；14. compressor；15. being percolated at concentrated liquor
Manage device；16.RO processing unit；17. blender；18. screening plant；19. slag cooler.
Specific embodiment
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention provides a kind of domestic garbage gasification electricity generation systems, and primary house refuse is entered height after pretreatment
Wet furnace gas, the fuel gas of generation are passed through deduster dedusting, the synthesis gas after dedusting after first-class heat exchanger exchanges heat
Dioxin is decomposed into high temperature SCR, then by secondary heat exchanger by heat utilization, obtained low temperature synthesis gas passes through gas purification
Device removes sour gas and remaining dust in synthesis gas, generates electricity into combustion in IC engine.Flue gas after combustion engine is filled by denitration
It postpones and enters afterheat utilizing system, realize garbage harmless and recycling treatment.The percolate that rubbish preprocessing process generates is logical
Enter MVR processing unit, the power that compressor needs in MVR processing unit comes from internal combustion unit, does not need to be additionally provided energy, seeps
Filtrate concentrate carries out preheating absorption using high temperature furnace slag, and remaining concentrate continues gasification, and combustion as clinker enters stove,
Realize the harmless treatment of landfill leachate.
Referring to Fig. 1, a kind of domestic garbage gasification electricity generation system of the present invention, including at wastes pre-processing system, percolate
Reason system, refuse gasification tar catalysis system, gas purge system, internal combustion engine power generation and afterheat utilizing system.Rubbish pretreatment
System divides two-way, connect all the way with the percolation liquid treating system with MVR system, another way and refuse gasification tar catalysis system
Connection, refuse gasification tar catalysis system includes gasification furnace 4, and 4 entrance of gasification furnace is connect with wastes pre-processing system, and outlet is divided to two
Road is connect with percolation liquid treating system all the way, and for realizing garbage harmless and recycling treatment, another way is by being provided with two
The gas purge system of grade gas-gas heat exchanger generates electricity with internal combustion engine and afterheat utilizing system is connect, and exchanges heat and for carrying out by interior
Combustion engine group 10 carries out combustion power generation.
Wastes pre-processing system includes house refuse feed bin 1, and refuse classification is crushed pressurizing unit 2, drying garbage screening dress
Set 3；Crude waste enters house refuse feed bin 1, and rubbish storage bin outlet connects refuse classification and is crushed 2 entrance of pressurizing unit,
Refuse classification is crushed the outlet of pressurizing unit 2 connection 3 entrance of drying garbage screening plant, and the dry gas of drying garbage screening plant 3 enters
Mouth connection level-one gas-gas heat exchanger 5 and the dry rich, high temperature oxygen outlet of second level gas-gas heat exchanger 8；
Crude waste is stored in house refuse feed bin after clearing station collection, after sorting broken extrusion dehydration, enters
Drying garbage screening plant, crude waste is processed into certain partial size, calorific value is higher, aqueous lower garbage fuel, from
And overcome the disadvantage that China's component of refuse is complicated, moisture content is high, calorific value is lower, guarantee the partial size of the material in subsequent gasification furnace
And calorific value, the stability of system is improved, the foul smell that drying process generates is passed through in the gasification furnace equipped with tar catalytic bed, will be organic
Combustible decomposes, as synthesis gas enters purification system.
Percolation liquid treating system includes MVR processing unit 13 and concentration liquid processing device 15；Refuse classification is broken to squeeze dress
Set 2 percolate outlet connection diafiltration liquid storage tank pond 12, diafiltration liquid storage tank pond 12 outlet connection 13 entrance of MVR processing unit, MVR
Concentrated solution outlet connection diafiltration 15 entrance of concentrated liquor processing unit of processing unit 13, the preheating chamber of MVR processing unit 13 go out
The condensed water of mouthful direct emission MVR process separation, an internal combustion in the compressor 14 and internal combustion unit 10 of MVR processing unit 13
Machine is connected；
The screening plant 18 for being percolated 15 entrance of concentrated liquor processing unit connection refuse gasification tar catalysis system exports, sieve
The slag outlet of gasification furnace 4 is arranged in separating device 18, and the clinker for screening appropriate particle size carries out the processing of refuse leachate concentrate；
It is percolated boil-off gas outlet connection 16 entrance of RO processing unit of concentrated liquor processing unit 15, remaining percolate and clinker pass through
The outlet for being percolated concentrated liquor processing unit 15 connects 17 entrance of blender, and the entrance of blender 17 connects 4 feed inlet of gasification furnace；
The percolate that rubbish generates in preprocessing process is passed through MVR processing unit 13, and the condensate liquid of generation can be arranged directly
It puts, the clinker that gasification furnace 4 generates is added in landfill leachate concentration liquid and is heated, liquid is concentrated with clinker absorption landfill leachate
In organic matter difficult to degrade and solidify heavy metal therein, add thermogenetic steam to be handled by RO processing unit 16,
Clinker after remaining percolate and absorption, which is passed through in gasification furnace 4, to burn.
Refuse gasification tar catalysis system includes gasification furnace 4 and matched oxygen enrichment system, close in gasification furnace
Exit is provided with tar catalytic bed, and the garbage inlet of the garbage outlet connection gasification furnace 4 of drying garbage screening plant 3 utilizes
The hot environment of gasification furnace 4 realizes the catalytic process in gasification, and rubbish enters gasification furnace 4 after treatment, in gasification furnace 4
High-temperature oxygen-enriched environment issue angryization, catalytic pyrolysis is carried out to tar using the hot environment in gasification furnace 4, gasification furnace 4 goes out
Two-stage gas-gas heat exchanger of the high-temperature synthesis gas of mouth Jing Guo gas purge system, transfers heat to the rich, high temperature of gasification furnace needs
Oxygen improves capacity usage ratio.
Gas purge system includes gas level-one gas-gas heat exchanger 5, deduster 6, SCR device 7, second level gas-gas heat exchanger 8,
Deacidifying device 9；The syngas outlet connection level-one gas-gas heat exchanger 5 and 8 entrance of second level gas-gas heat exchanger of gasification furnace 4, level-one gas
The outlet of 5 synthesis gas of gas heat exchanger connects 6 entrance of deduster, for avoiding the generation of dioxin, removes two evil under low temperature environment
English generates the catalyst needed, the outlet of deduster 6 connection 7 entrance of SCR device, can effective catalytic decomposition of dioxins, SCR sets
Standby 7 outlet connects 8 entrance of second level gas-gas heat exchanger, the outlet of second level gas-gas heat exchanger 8 connection 9 entrance of deacidifying device, deacidifying device 9
Outlet connection internal combustion unit 10.
The clinker that gasification furnace 4 generates selects the clinker of appropriate particle size to be passed through diafiltration concentrated liquor processing system after screening
System reacts, remaining clinker direct emission as concentrate enters gasification furnace 4.
Air feed and oxygen enrichment system pass through level-one through level-one gas-gas heat exchanger 5 and the connection gasification furnace 4 of second level gas-gas heat exchanger 8
It sieves on the interior realization side of high-temperature oxygen-enriched feeding sieving garbage drying equipment 3 after gas-gas heat exchanger 5 and second level gas-gas heat exchanger 8 exchange heat
Side is dry, and the moisture content for reducing rubbish improves refuse thermal value, and the rubbish after dry screening, which is sent into gasification furnace 4, to gasify, and uses
Merge in dry and screening process.
The dry high-temperature oxygen-enriched feeding drying garbage screening plant after the heat exchange of two-stage gas-gas heat exchanger needed of the gas that gasifies
3, the foul smell after drying, which is sent into gasification furnace 4, does fluidized gas, smelly as refuse gasification synthesis gas enters 4 gasification, and combustion of gasification furnace
The combustable organics such as alcohols, ethers for containing in gas substance is decomposed in gasification furnace 4 and tar catalytic bed, the ammonia nitrogen in foul smell with
Enter SCR device after syngas combustion, provide the ammonia of needs for internal combustion engine exiting flue gas denitrification process.
Internal combustion engine power generation and afterheat utilizing system include internal combustion unit 10 and afterheat utilizing system 11；
The entrance of the outlet of the deacidifying device 9 connection internal combustion unit 10 of gas purge system, 10 exhanst gas outlet of internal combustion unit connect
Connect 11 entrance of afterheat utilizing system.
The synthesis gas of generation is sent into internal combustion unit 10 and burns, in internal combustion unit 10 in selection one after gas purification
Combustion engine is connected with the compressor 14 in MVR processing unit 13, does not generate electricity and provides the power of the needs of compressor 14, realizes internal combustion engine
Compressor operation is driven, system effectiveness is improved, the high-temperature flue gas of generation is sent into residual heat using device after 7 denitration of SCR device
11, realize the efficient utilization of energy.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (5)
1. a kind of domestic garbage gasification electricity generation system, which is characterized in that including wastes pre-processing system, wastes pre-processing system packet
It includes house refuse feed bin (1), the outlet of house refuse feed bin (1) is connect with the entrance that refuse classification is crushed pressurizing unit (2), rubbish
The outlet that rubbish sorts broken pressurizing unit (2) divides two-way, and percolate outlet is connect with percolation liquid treating system, another way outlet warp
It crosses drying garbage screening plant (3) to connect with the entrance of gasification furnace (4), is sent into gasification furnace for the rubbish after sieving will to be dried
(4) gasify in, drying gas entrance connection level-one gas-gas heat exchanger (5) of drying garbage screening plant (3) and second level gas gas
Heat exchanger (8), high-temperature oxygen-enriched for the dry needs of the gas that will gasify pass through level-one gas-gas heat exchanger (5) and second level gas-gas heat exchanger
(8) realization in drying garbage screening plant (3) is sent into after exchanging heat to dry in screening；
Wastes pre-processing system divides two-way, connect all the way with the percolation liquid treating system with MVR system, another way and rubbish gas
Change the connection of tar catalysis system, refuse gasification tar catalysis system includes the gasification furnace (4) that outlet is provided with tar catalytic bed, gas
Change furnace (4) entrance connect with wastes pre-processing system, the outlet of gasification furnace (4) divides two-way, all the way with percolation liquid treating system
Connection, for realizing garbage harmless and recycling treatment, percolation liquid treating system includes MVR processing unit (13), MVR processing
The entrance of device (13) is connect by being percolated liquid storage tank pond (12) with wastes pre-processing system, the outlet of MVR processing unit (13)
It is connect with the entrance of diafiltration concentrated liquor processing unit (15), blender is passed through in the outlet of diafiltration concentrated liquor processing unit (15)
(17) it is connect with the feed inlet of gasification furnace (4)；Another way is by being provided with level-one gas-gas heat exchanger (5) and second level gas-gas heat exchanger
(8) gas purge system generates electricity with internal combustion engine and afterheat utilizing system is connect, and exchanges heat and for carrying out by internal combustion unit
(10) combustion power generation, the entrance of syngas outlet connection level-one gas-gas heat exchanger (5) of gasification furnace (4) are carried out, level-one gas gas changes
The entrance of syngas outlet connection deduster (6) of hot device (5), the entrance of outlet connection SCR device (7) of deduster (6),
The entrance of outlet connection second level gas-gas heat exchanger (8) of SCR device (7), the outlet of second level gas-gas heat exchanger (8) and internal combustion unit
(10) it connects, is provided with screening plant (18) at the slag outlet of gasification furnace (4), the outlet of screening plant (18) and percolate are dense
The entrance of contracting liquid processing device (15) connects, boil-off gas outlet and the RO processing unit of diafiltration concentrated liquor processing unit (15)
(16) entrance connection.
2. a kind of domestic garbage gasification electricity generation system according to claim 1, which is characterized in that level-one gas-gas heat exchanger
(5) it being connect with one end of second level gas-gas heat exchanger (8) with air feed and oxygen enrichment system, the other end is connect with the entrance of gasification furnace (4),
It is sent into gasification furnace (4) for the foul smell after drying and does fluidized gas, as refuse gasification synthesis gas enters gasification furnace (4) gasification
Burning.
3. a kind of domestic garbage gasification electricity generation system according to claim 1, which is characterized in that screening plant (18) connection
There are slag cooler (19) for cooling recycling.
4. a kind of domestic garbage gasification electricity generation system according to claim 1, which is characterized in that MVR processing unit (13)
It is inside provided with compressor (14), compressor (14) is connect with internal combustion unit (10) Zhong Yitai internal combustion engine not generated electricity, for being pressure
Contracting machine (14) provides energy.
5. a kind of domestic garbage gasification electricity generation system according to claim 1, which is characterized in that second level gas-gas heat exchanger
(8) it is provided between internal combustion unit (10) deacidifying device (9), the outlet of second level gas-gas heat exchanger (8) connects deacidifying device (9)
Entrance, the entrance of outlet connection internal combustion unit (10) of deacidifying device (9), the exhanst gas outlet of internal combustion unit (10) and waste heat benefit
It is connected with the entrance of system (11).
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| CN112108498A (en) * | 2020-09-10 | 2020-12-22 | 重庆大学 | Integrated treatment method and treatment device for solid garbage and leachate in household garbage |
| CN112896019B (en) * | 2021-03-03 | 2022-03-01 | 杭州能态思特科技有限公司 | Domestic waste innocent treatment car |
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| CN202097180U (en) * | 2011-06-02 | 2012-01-04 | 吴军伟 | Integrated treatment apparatus for sludge and domestic refuse in cities and towns |
| CN104226666B (en) * | 2013-06-08 | 2017-05-10 | 中国科学院工程热物理研究所 | Coordinative processing method for refuse landfill |
| CN206280976U (en) * | 2016-12-02 | 2017-06-27 | 北京神雾环境能源科技集团股份有限公司 | The system for the treatment of house refuse and percolate |
| CN107448944B (en) * | 2017-08-04 | 2019-01-22 | 北京鸿洲兴业环保科技有限公司 | Aging waste incineration and building materials system processed |
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