CN106670211A - System and method for treating household garbage - Google Patents

System and method for treating household garbage Download PDF

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Publication number
CN106670211A
CN106670211A CN201611192907.8A CN201611192907A CN106670211A CN 106670211 A CN106670211 A CN 106670211A CN 201611192907 A CN201611192907 A CN 201611192907A CN 106670211 A CN106670211 A CN 106670211A
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CN
China
Prior art keywords
pyrolysis
house refuse
heat
oil gas
outlet
Prior art date
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Pending
Application number
CN201611192907.8A
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Chinese (zh)
Inventor
张安强
蔡先明
周方远
吴道洪
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Beijing Shenwu Environmental and Energy Technology Co Ltd
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Beijing Shenwu Environmental and Energy Technology Co Ltd
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Application filed by Beijing Shenwu Environmental and Energy Technology Co Ltd filed Critical Beijing Shenwu Environmental and Energy Technology Co Ltd
Priority to CN201611192907.8A priority Critical patent/CN106670211A/en
Publication of CN106670211A publication Critical patent/CN106670211A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/02Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with stationary charge
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10Adaptations for driving, or combinations with, electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion

Abstract

The invention discloses a system and method for treating household garbage. The system comprises a pretreatment unit, a pyrolyzing furnace, a direct combustion boiler and a turbo generator. The pretreatment unit is provided with a household garbage inlet, an inorganic garbage outlet and an organic garbage outlet. The pyrolyzing furnace is internally provided with a chain plate type furnace bottom, a heat accumulation type radiation pipe, an organic garbage inlet, a pyrolytic carbon outlet and a pyrolysis oil gas outlet. The direct combustion boiler is internally provided with a combustion chamber and a heat exchange chamber which are connected. The combustion chamber is internally provided with a pyrolysis oil gas inlet. The heat exchange chamber is internally provided with a cooling water inlet, an overheat steam outlet and a low-temperature smoke outlet. The turbo generator is connected with the overheat steam outlet. By adoption of the system, sensible heat and latent heat of the pyrolysis oil gas can be sufficiently recycled, the phenomenon that oil tar blocks a pipeline does not exist, secondary pollution is avoided, energy consumption is low, the energy utilization rate is high, and economic benefits are obvious.

Description

The system and method for processing house refuse
Technical field
The invention belongs to solid waste resource recovery process field, specifically, the present invention relates to process house refuse System and method.
Background technology
The yield of China's house refuse is growing day by day, especially some big cities, is faced with the danger of " garbage-surrounded city ".Rubbish After rubbish is produced, if without effective, harmless treatment, not only can contaminated soil, water source and air, can also be to the body of resident Health is impacted, deteriorates living conditions.Therefore, house refuse has become the very prominent environmental problem in each city.
At present, the major way of domestic garbage disposal has landfill, compost, burning etc..The percolate pair that garbage loading embeading is produced Underground water is serious with soil pollution, and a large amount of land occupation resources.Garbage compost treating capacity is limited, and uncontrollable to enterprise Risk.For at present, burning method can actually solve the danger of " garbage-surrounded city ", but it still has many technical problems to need solution Certainly.Bioxin is for example produced to cause severe air to pollute, flying dust and heavy metal secondary pollution are serious.Although during " 12 " Country encourages garbage incineration technology, but also because bioxin and secondary pollution problems, it is difficult to received by the numerous common people.
Refuse pyrolysis technology is that rubbish is pyrolyzed under conditions of anaerobic or anoxybiotic, and the organic matter in rubbish is converted into The imflammable gas such as hydrogen, carbon monoxide, methane, oil-water mixture and solid product, prevent the life of the noxious materials such as bioxin Into, be it is a kind of pollute it is small, invest the low, technology of garbage disposal returned.Existing domestic garbage pyrolysis technological difficulties are mainly Consume energy that larger, product is less, complex operation, treating capacity it is low, pyrolysis product can be caused to be difficult to sell, less economical.
Therefore, the technology of existing treatment house refuse is further improved.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention One purpose is to propose a kind of system and method for processing house refuse, and the aobvious of pyrolysis oil gas can be fully reclaimed using the system Heat and latent heat, the phenomenon of pipeline is blocked in the absence of tar, and non-secondary pollution, energy consumption is low, and energy utilization rate is high, economic benefit is aobvious Write.
In one aspect of the invention, the present invention proposes a kind of system for processing house refuse.Reality of the invention Example is applied, the system includes:
There is pretreatment unit, the pretreatment unit house refuse entrance, inorganic refuse outlet and organic waste to export;
There is chain-plate type furnace bottom, the furnace bottom is arranged with heat accumulation type radiant tube up and down, institute in pyrolysis oven, the pyrolysis oven The direction of transfer of the direction of insertion perpendicular to the furnace bottom of regenerator radiant tube, and the regenerator radiant tube are stated in the stove The direction of transfer at bottom is uniformly distributed, described organic near the upstream arrangement organic waste entrance of the furnace bottom on the pyrolysis oven Garbage inlet is connected with organic waste outlet, and the arranged downstream on the pyrolysis oven near the furnace bottom has pyrolytic carbon to go out Mouthful, the pyrolysis oven top layout has pyrolysis oil gas vent;
There is connected combustion chamber and Heat Room, the combustion chamber placement has pyrolysis in direct-combustion boiler, the direct-combustion boiler Oil gas entrance, the pyrolysis oil gas entrance is connected with the pyrolysis oil gas vent, and the Heat Room is disposed with cooling water inlet, mistake Vapours is exported and low-temperature flue gas outlet,
Steam turbine generator, the steam turbine generator is connected with superheated steam outlet.
Thus, the system for the treatment of house refuse according to embodiments of the present invention is pre-processed by by house refuse, can The inorganic matters such as metal, glass, the fragment of brick of the overwhelming majority in house refuse are removed, is conducive to avoiding follow-up house refuse in pyrolysis oven Flying dust is produced during interior pyrolysis, house refuse can be also avoided in follow-up preprocessing process, the inorganic matter such as metal, glass is to pretreatment The damage of equipment, while the removal of inorganic refuse advantageously reduces the energy consumption of follow-up pyrolysis oven.Organic rubbish is obtained after pretreatment Rubbish, because its particle diameter is smaller, can dramatically increase the efficiency of pyrolysis processing, reduce the energy consumption of pyrolysis oven.In pyrolysis oven, organic waste Pyrolysis is heated by heat accumulation type radiant tube, and the flue gas in heat accumulation type radiant tube completely cuts off with the atmosphere in pyrolysis oven burner hearth, has Machine rubbish is pyrolyzed under conditions of anoxybiotic, can avoid producing the secondary pollutions such as bioxin.Simultaneously because of pyrolysis capacity of furnace loss It is small, organic waste can be avoided to separate out tar because pyrolysis temperature is low in pyrolytic process, so as to avoid the occurrence of tar bond tube wall, Block the phenomenon of pipeline.By organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil gas in combustion chamber Interior abundant burning, obtains high-temperature flue gas, and during burning, further heat absorption is warming up to and height the vapor in pyrolysis oil gas The temperature of warm flue gas is consistent, and the subsequent high-temperature flue gas and vapor into being exchanged heat with cooling water in Heat Room, exchange heat together Later, cooling water is changed into superheated steam, and high-temperature flue gas are changed into low-temperature flue gas.Superheated steam is again by the main gas of steam turbine generator Valve, regulating valve enter steam turbine, and the heat energy of superheated steam is converted to the mechanical energy of turbine rotor rotation, drive synchronous generator Machine rotation produces electric energy, and the electric energy part of generation is personal to be connected to the grid outward.Superheated steam can be additionally used in winter heating heat supply or logical Enter refrigeration system for summer air-conditioning and cryogenic system.
In addition, the system for the treatment of house refuse according to the above embodiment of the present invention can also have following additional technology Feature:
In some embodiments of the invention, the pretreatment unit includes the sorting unit, the drying device that are sequentially connected And breaker.Thus, be conducive to improving the pyrolysis efficiency of follow-up pyrolysis oven, reduce the energy consumption of pyrolysis oven.
In some embodiments of the invention, the low-temperature flue gas outlet is connected with described with drying device.Thus, can profit Treatment is dried to house refuse with the waste heat of low-temperature flue gas, is conducive to the heat utilization efficiency of increase system, reduce the energy of system Consumption.
In some embodiments of the invention, the system of the treatment house refuse is further included:Gasification furnace, the gas Changing stove has pyrolytic carbon entrance and gasification gas to export, and the pyrolytic carbon entrance is connected with pyrolytic carbon outlet, the gasification gas Outlet is connected with the heat accumulation type radiant tube in the pyrolysis oven.Thus, pyrolytic carbon can be converted into heat accumulation type radiant tube Fuel is used, and can further increase the heat utilization efficiency of system, reduces the energy consumption of system.
In another aspect of the invention, the present invention proposes a kind of system treatment life using above-mentioned treatment house refuse The method of rubbish living.Embodiments in accordance with the present invention, methods described includes:
(1) house refuse is supplied into the pretreatment unit and is pre-processed, to obtain inorganic refuse and organic Rubbish;
(2) organic waste is supplied into the pyrolysis oven, to obtain pyrolytic carbon and pyrolysis oil gas;
(3) the pyrolysis oil gas is supplied into combustion chamber and Heat Room into the direct-combustion boiler successively, to obtain Vapours and low-temperature flue gas;
(4) supplying to the steam turbine generator superheated steam is used to generate electricity.
Thus, the method for the treatment of house refuse according to embodiments of the present invention is pre-processed by by house refuse, can The inorganic matters such as metal, glass, the fragment of brick of the overwhelming majority in house refuse are removed, is conducive to avoiding follow-up house refuse in pyrolysis oven Flying dust is produced during interior pyrolysis, house refuse can be also avoided in follow-up preprocessing process, the inorganic matter such as metal, glass is to pretreatment The damage of equipment, while the removal of inorganic refuse advantageously reduces the energy consumption of follow-up pyrolysis oven.Organic rubbish is obtained after pretreatment Rubbish, because its particle diameter is smaller, can dramatically increase the efficiency of pyrolysis processing, reduce the energy consumption of pyrolysis oven.In pyrolysis oven, organic waste Pyrolysis is heated by heat accumulation type radiant tube, and the flue gas in heat accumulation type radiant tube completely cuts off with the atmosphere in pyrolysis oven burner hearth, has Machine rubbish is pyrolyzed under conditions of anoxybiotic, can avoid producing the secondary pollutions such as bioxin.Simultaneously because of pyrolysis capacity of furnace loss It is small, organic waste can be avoided to separate out tar because pyrolysis temperature is low in pyrolytic process, so as to avoid the occurrence of tar bond tube wall, Block the phenomenon of pipeline.By organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil gas in combustion chamber Interior abundant burning, obtains high-temperature flue gas, and during burning, further heat absorption is warming up to and height the vapor in pyrolysis oil gas The temperature of warm flue gas is consistent, and the subsequent high-temperature flue gas and vapor into being exchanged heat with cooling water in Heat Room, exchange heat together Later, cooling water is changed into superheated steam, and high-temperature flue gas are changed into low-temperature flue gas.Superheated steam is again by the main gas of steam turbine generator Valve, regulating valve enter steam turbine, and the heat energy of superheated steam is converted to the mechanical energy of turbine rotor rotation, drive synchronous generator Machine rotation produces electric energy, and the electric energy part of generation is personal to be connected to the grid outward.Superheated steam can be additionally used in winter heating heat supply or logical Enter refrigeration system for summer air-conditioning and cryogenic system.
In addition, the method for the treatment of house refuse according to the above embodiment of the present invention can also have following additional technology Feature:
In some embodiments of the invention, the pretreatment includes sorting process, dried process and break process successively. Thus, be conducive to improving the pyrolysis efficiency of follow-up pyrolysis oven, reduce the energy consumption of pyrolysis oven.
In some embodiments of the invention, the method for the treatment house refuse is further included:(5) by step (3) The low-temperature flue gas for obtaining supply dried process process into step (1) as dried medium.Thus, using low temperature cigarette The waste heat of gas is dried treatment to house refuse, is conducive to the heat utilization efficiency of increase system, reduces the energy consumption of system.
In some embodiments of the invention, the method for the treatment house refuse is further included:(6) by step (2) The pyrolytic carbon for obtaining supplies and gasification process is carried out into the gasification installation, to obtain the gas that gasifies, and by the gasification The heat accumulation type radiant tube that gas is supplied in the pyrolysis oven into step (2) is used as fuel.Thus, pyrolytic carbon can be converted For the fuel of heat accumulation type radiant tube is used, can further increase the heat utilization efficiency of system, reduce the energy consumption of system.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein:
Fig. 1 is the system structure diagram for the treatment of house refuse according to an embodiment of the invention;
Fig. 2 is that the part-structure of pyrolysis oven in system according to the treatment house refuse of further embodiment of the present invention is illustrated Figure;
Fig. 3 is the system structure diagram of the treatment house refuse according to another embodiment of the invention;
Fig. 4 is the system structure diagram of the treatment house refuse according to another embodiment of the invention;
Fig. 5 is the method flow schematic diagram for the treatment of house refuse according to an embodiment of the invention;
Fig. 6 is the method flow schematic diagram of the treatment house refuse according to further embodiment of the present invention;
Fig. 7 is the method flow schematic diagram of the treatment house refuse according to another embodiment of the invention;
Fig. 8 is the system structure diagram of the treatment house refuse according to another embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally;Can be that machinery connects Connect, or electrically connect;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In one aspect of the invention, the present invention proposes a kind of system for processing house refuse.Reality of the invention Example is applied, with reference to Fig. 1, the system includes:Pretreatment unit 100, pyrolysis oven 200, direct-combustion boiler 300 and steam turbine generator 400.
There is embodiments in accordance with the present invention, pretreatment unit 100 house refuse entrance 101, inorganic refuse to export 102 and Organic waste outlet 103, and be suitable to be pre-processed house refuse, to obtain inorganic refuse and organic waste.Inventor It was found that, pre-processed by by house refuse, metal, glass, the fragment of brick of the overwhelming majority in house refuse etc. can be removed inorganic Thing, is conducive to producing flying dust when avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven, can also avoid house refuse at follow-up pre- place During reason, damage of the inorganic matter such as metal, glass to pre-processing device, while the removal of inorganic refuse is advantageously reduced subsequently The energy consumption of pyrolysis oven.Organic waste is obtained after pretreatment, because its particle diameter is smaller, the efficiency of pyrolysis processing can be dramatically increased, and is dropped The energy consumption of low pyrolysis oven.
According to one embodiment of present invention, the pretreatment unit includes the sorting unit, the drying device that are sequentially connected And breaker.Inventor has found, sorted by by house refuse, can remove the metal of the overwhelming majority in house refuse, The inorganic matters such as glass, fragment of brick, are conducive to producing flying dust when avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven, can also avoid life Rubbish in follow-up preprocessing process, damage of the inorganic matter such as metal, glass to pre-processing device, while the removal of inorganic refuse Advantageously reduce the energy consumption of follow-up pyrolysis oven.After house refuse is through dried process, the moisture in house refuse is can remove, one can be entered Step reduces the energy consumption of follow-up pyrolysis oven.House refuse obtains organic waste after break process, because its particle diameter is smaller, can significantly increase Plus the efficiency of pyrolysis processing, reduce the energy consumption of pyrolysis oven.
Specifically, the house refuse of moisture content 40wt%~60wt% is sent into sorting unit, metal therein, glass are removed The inorganic matters such as glass, fragment of brick, enter back into drying device, and the moisture in removal house refuse is down to the moisture content of house refuse Below 30wt%, is delivered to breaker and goes out to be crushed finally by conveyer belt.
Embodiments in accordance with the present invention, with reference to Fig. 1 and 2, pyrolysis oven 200 has chain-plate type furnace bottom 21, heat accumulation type radiant tube 22nd, organic waste entrance 201, pyrolytic carbon outlet 202 and pyrolysis oil gas vent 203.
According to one embodiment of present invention, the outward appearance of pyrolysis oven 200 can be Horizontal cylinder shape structure, chain-plate type furnace bottom 21 Material is high temperature resistant steel plate with holes, and outward appearance is chain-plate type structure and may move that remaining furnace binding is fixed.
According to still a further embodiment, with reference to Fig. 2, heat accumulation type radiant tube 22 is arranged in chain-plate type furnace bottom about 21 Space, perpendicular to the direction of transfer of furnace bottom 21, and regenerator radiant tube 22 is in furnace bottom for the direction of insertion of regenerator radiant tube 22 21 direction of transfer is uniformly distributed.Thus, by burning fuel in heat radiation mode as stove in heat supply, improve pyrolysis oven in it is organic The pyrolysis efficiency of rubbish.
According to still another embodiment of the invention, along the direction of transfer of chain-plate type furnace bottom 21, the cloth of organic waste entrance 201 The upstream position near chain-plate type furnace bottom 21 on pyrolysis oven 200 is put, and organic waste entrance 201 is exported with organic waste 103 are connected, and are suitable to supply the organic waste that above-mentioned pretreatment unit is obtained into pyrolysis oven.
According to still another embodiment of the invention, along the direction of transfer of chain-plate type furnace bottom 21, pyrolytic carbon outlet 202 is arranged Near the downstream position of chain-plate type furnace bottom 21 on pyrolysis oven 200, and it is suitable to be pyrolyzed in pyrolysis oven the pyrolytic carbon discharge of generation Pyrolysis oven.
According to still another embodiment of the invention, pyrolysis oil gas vent 203 is arranged in the top of pyrolysis oven 200, and be suitable to by The pyrolysis oil gas discharge pyrolysis oven that organic waste pyrolysis is produced.
Inventor has found that organic waste enters the chain of pyrolysis oven by feed auger conveying device by organic waste entrance Board-like furnace bottom, the heat accumulation type radiant tube arranged by the both sides up and down of chain-plate type furnace bottom can be to the organic rubbish on chain-plate type furnace bottom Rubbish is heated to more than 900 degrees Celsius, and organic waste is pyrolyzed under 900 degrees Celsius of high temperature atmosphere, at the same time chain-plate type furnace bottom Moved along direction of transfer, after a period of time, organic waste pyrolysis is pyrolytic carbon and pyrolysis oil gas.Pyrolytic carbon passes through chain-plate type The discharging spiral of furnace bottom is exported through pyrolytic carbon and discharged, and pyrolysis oil gas enters pyrolysis Oil/Gas Pipe by the pyrolysis oil gas vent of furnace roof Road.
Embodiments in accordance with the present invention, direct-combustion boiler 300 have combustion chamber 31, Heat Room 32, pyrolysis oil gas entrance 301, Cooling water inlet 302, superheated steam outlet 303 and low-temperature flue gas outlet 304.Specifically, having what is be connected in direct-combustion boiler 300 Combustion chamber 31 and Heat Room 32, combustion chamber 31 are disposed with pyrolysis oil gas entrance 301, and pyrolysis oil gas entrance 301 goes out with pyrolysis oil gas Mouth 203 is connected, and Heat Room 32 is disposed with cooling water inlet 302, superheated steam outlet 303 and low-temperature flue gas outlet 304, and is suitable to Pyrolysis oil gas is burnt, and is exchanged heat with cooling water, to obtain superheated steam and low-temperature flue gas.Inventor's discovery, By organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil gas fully burns in combustion chamber, can be with The sensible heat and latent heat of pyrolysis oil gas are fully reclaimed, and reduces pyrolysis oil air cooling separating step, blocked in the absence of pyrolytic tar The problem of pipeline.High-temperature flue gas are obtained after pyrolysis oil gas burning, during burning, the vapor in pyrolysis oil gas is further Heat absorption be warming up to it is consistent with the temperature of high-temperature flue gas, the subsequent high-temperature flue gas and vapor together into Heat Room with cooling water Exchanged heat, after heat exchange, cooling water is changed into superheated steam, and high-temperature flue gas are changed into low-temperature flue gas.
Specifically, pyrolysis oil air pipe is connected with the combustion chamber of direct-combustion boiler, pyrolysis oil gas is entered by pyrolysis oil air pipe Enter the combustion chamber of direct-combustion boiler, be pyrolyzed the main component of oil gas pyrolysis gas and the pyrolytic tar such as including hydrogen, methane, carbon monoxide And water vapour.Combustion chamber using particular design burner, pyrolysis gas and pyrolytic tar can fully burn in combustion chamber, produce 900-1200 degrees Celsius of high-temperature flue gas, in combustion, further heat absorption is warming up to 900- to the water vapour in pyrolysis oil gas 1200 degrees Celsius.Then, the gaseous mixture of 900-1200 degrees Celsius of high-temperature flue gas and water vapour enters the Heat Room of direct-combustion boiler, With the superheated steam and 180-200 degrees Celsius of low-temperature flue gas that the cooling water heat exchange in direct-combustion boiler produces 300-500 degrees Celsius.
Embodiments in accordance with the present invention, steam turbine generator 400 is connected with superheated steam outlet 303, and is suitable to steam overheat Vapour is used to generate electricity.Inventor has found that superheated steam enters steam turbine by the main air valve of steam turbine generator, regulating valve, can be by mistake The heat energy of vapours is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce electric energy, the electricity of generation It is connected to the grid outside partly using by oneself, whole process non-secondary pollution, with good social and economic benefit.Additionally, overheat is steamed Vapour can be additionally used in winter heating heat supply or be passed through refrigeration system for summer air-conditioning and cryogenic system, once can take full advantage of Source, improves efficiency of energy utilization.
The system for the treatment of house refuse according to embodiments of the present invention is pre-processed by by house refuse, can remove life The inorganic matter such as metal, glass, fragment of brick of the overwhelming majority, is conducive to avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven in rubbish living When produce flying dust, can also avoid house refuse in follow-up preprocessing process, the inorganic matter such as metal, glass is to pre-processing device Damage, while the removal of inorganic refuse advantageously reduces the energy consumption of follow-up pyrolysis oven.Organic waste is obtained after pretreatment, because of it Particle diameter is smaller, can dramatically increase the efficiency of pyrolysis processing, reduces the energy consumption of pyrolysis oven.In pyrolysis oven, organic waste pyrolysis is logical Cross heat accumulation type radiant tube to be heated, the flue gas in heat accumulation type radiant tube completely cuts off with the atmosphere in pyrolysis oven burner hearth, organic waste It is pyrolyzed under conditions of anoxybiotic, can avoids producing the secondary pollutions such as bioxin.Simultaneously because pyrolysis capacity of furnace loss is small, can keep away Exempt from organic waste and separate out tar because pyrolysis temperature is low in pyrolytic process, bond tube wall so as to avoid the occurrence of tar, block pipe The phenomenon in road.By organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil gas in combustion chamber fully Burning, obtains high-temperature flue gas, and during burning, further heat absorption is warming up to and high-temperature flue gas the vapor in pyrolysis oil gas Temperature it is consistent, the subsequent high-temperature flue gas and vapor are cold after heat exchange together into being exchanged heat with cooling water in Heat Room But water is changed into superheated steam, and high-temperature flue gas are changed into low-temperature flue gas.Superheated steam is again by the main air valve of steam turbine generator, regulating valve Into steam turbine, the heat energy of superheated steam is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce Electric energy is given birth to, the electric energy part of generation is personal to be connected to the grid outward.Superheated steam can be additionally used in winter heating heat supply or be passed through refrigeration system Unite for summer air-conditioning and cryogenic system.
With reference to Fig. 3, the system for the treatment of house refuse according to embodiments of the present invention, low-temperature flue gas outlet 304 and pretreatment Drying device in unit 100 is connected, and is suitable to the low-temperature flue gas that obtain direct-combustion boiler as dried medium.Invention human hair It is existing, by the drying device that 180-200 degrees Celsius of low-temperature flue gas are used in pretreatment unit, life rubbish on the one hand can be removed Moisture in rubbish, reduces the energy consumption of follow-up pyrolysis oven, on the other hand can fully recycle the sensible heat and latent heat in low-temperature flue gas And in low-temperature flue gas water vapour the latent heat of vaporization, significantly reduce house refuse pretreatment energy consumption.Low-temperature flue gas are through drying Its temperature can be down to 100-110 degrees Celsius after device.
With reference to Fig. 4, the system for the treatment of house refuse according to embodiments of the present invention is further included:Gasification furnace 500.
Embodiments in accordance with the present invention, gasification furnace 500 has pyrolytic carbon entrance 501 and gasification gas outlet 502, and pyrolytic carbon enters Mouth 501 is connected with pyrolytic carbon outlet 202, and gasification gas outlet 502 is connected with the heat accumulation type radiant tube 22 in pyrolysis oven 200, and suitable Gasification process is carried out in the pyrolytic carbon for obtaining pyrolysis oven, to obtain the gas that gasifies, and gasification gas is supplied into pyrolysis oven Heat accumulation type radiant tube is used as fuel.Thus, the energy consumption of pyrolysis oven can be significantly reduced, while the pyrolytic carbon of low heat value is converted It is the gasification gas of high heating value, is truly realized " innoxious, minimizing, resource " treatment of rubbish.
As described above, the system for the treatment of house refuse according to embodiments of the present invention can have the advantages that selected from it is following at least One of:
The system for the treatment of house refuse according to embodiments of the present invention is directly sent by the pyrolysis oil gas for producing pyrolysis oven Enter combustion chambers burn, can fully reclaim the sensible heat and latent heat of pyrolysis oil gas, and a large amount of reluctant waste water will not be produced, The problem of pipeline is blocked in the absence of pyrolytic tar.
The system for the treatment of house refuse according to embodiments of the present invention will be by that will be pyrolyzed the high-temperature flue gas that oil gas burning is produced Directly exchanged heat with cooling water, the superheated steam of generation generates electricity into steam turbine generator, and product is the electric energy of cleaning, without secondary dirt Dye, with good social and economic benefit.Additionally, superheated steam can be additionally used in winter heating heat supply or be passed through refrigeration system use In summer air-conditioning and cryogenic system.Thus, primary energy is taken full advantage of, efficiency of energy utilization is improve.
Low-temperature flue gas feeding pretreatment of the system for the treatment of house refuse according to embodiments of the present invention after by heat exchange In the drying device of unit, low-temperature flue gas temperature can be down to 100-110 Celsius further with the latent heat in low-temperature flue gas Degree, can also significantly reduce the energy consumption of rubbish pretreatment unit.
In another aspect of the invention, the present invention proposes a kind of system treatment life using above-mentioned treatment house refuse The method of rubbish living.Embodiments in accordance with the present invention, with reference to Fig. 5, the method includes:
S100:House refuse is supplied and is pre-processed into pretreatment unit
In the step, house refuse is supplied and is pre-processed into pretreatment unit, to obtain inorganic refuse and to have Machine rubbish.Inventor's discovery, is pre-processed by by house refuse, can remove metal, the glass of the overwhelming majority in house refuse The inorganic matters such as glass, fragment of brick, are conducive to producing flying dust when avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven, can also avoid life rubbish Rubbish in follow-up preprocessing process, damage of the inorganic matter such as metal, glass to pre-processing device, while the removal of inorganic refuse has Beneficial to the energy consumption for reducing follow-up pyrolysis oven.Organic waste is obtained after pretreatment, because its particle diameter is smaller, can be dramatically increased at pyrolysis The efficiency of reason, reduces the energy consumption of pyrolysis oven.
According to one embodiment of present invention, pretreatment includes sorting process, dried process and break process successively.Invention People's discovery, is sorted by by house refuse, can remove metal, glass, the fragment of brick of the overwhelming majority in house refuse etc. inorganic Thing, is conducive to producing flying dust when avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven, can also avoid house refuse at follow-up pre- place During reason, damage of the inorganic matter such as metal, glass to pre-processing device, while the removal of inorganic refuse is advantageously reduced subsequently The energy consumption of pyrolysis oven.After house refuse is through dried process, the moisture in house refuse is can remove, can further reduce follow-up pyrolysis The energy consumption of stove.House refuse obtains organic waste after break process, because its particle diameter is smaller, can dramatically increase the effect of pyrolysis processing Rate, reduces the energy consumption of pyrolysis oven.
Specifically, the house refuse of moisture content 40wt%~60wt% is sent into sorting unit, metal therein, glass are removed The inorganic matters such as glass, fragment of brick, enter back into drying device, and the moisture in removal house refuse is down to the moisture content of house refuse Below 30wt%, is delivered to breaker and goes out to be crushed finally by conveyer belt.
S200:Organic waste is supplied into pyrolysis oven
In the step, organic waste is supplied into pyrolysis oven, to obtain pyrolytic carbon and pyrolysis oil gas.Invention human hair Existing, organic waste enters the chain-plate type furnace bottom of pyrolysis oven by feed auger conveying device by organic waste entrance, by chain It is Celsius that the heat accumulation type radiant tube of the arrangement of both sides up and down of board-like furnace bottom can be heated to 900 to the organic waste on chain-plate type furnace bottom More than degree, organic waste is divided into lower pyrolysis in 900 degrees Celsius of high temperature, and at the same time chain-plate type furnace bottom is transported along direction of transfer Dynamic, after a period of time, organic waste pyrolysis is pyrolytic carbon and pyrolysis oil gas.The discharging spiral that pyrolytic carbon passes through chain-plate type furnace bottom Exported through pyrolytic carbon and discharged, pyrolysis oil gas enters pyrolysis oil air pipe by the pyrolysis oil gas vent of furnace roof.
S300:Pyrolysis oil gas is supplied into combustion chamber and Heat Room into direct-combustion boiler successively
In the step, pyrolysis oil gas is supplied into combustion chamber and Heat Room into direct-combustion boiler successively, to be overheated Steam and low-temperature flue gas.Inventor find, by organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil Gas fully burns in combustion chamber, can fully reclaim the sensible heat and latent heat of pyrolysis oil gas, and reduce pyrolysis oil air cooling point From step, the problem of pipeline is blocked in the absence of pyrolytic tar.High-temperature flue gas are obtained after pyrolysis oil gas burning, in the process of burning In, further heat absorption is warming up to, the then high-temperature flue gas and water consistent with the temperature of high-temperature flue gas for vapor in pyrolysis oil gas Together into being exchanged heat with cooling water in Heat Room, after heat exchange, cooling water is changed into superheated steam to steam, and high-temperature flue gas are changed into Low-temperature flue gas.
Specifically, pyrolysis oil air pipe is connected with the combustion chamber of direct-combustion boiler, pyrolysis oil gas is entered by pyrolysis oil air pipe Enter the combustion chamber of direct-combustion boiler, be pyrolyzed the main component of oil gas pyrolysis gas and the pyrolytic tar such as including hydrogen, methane, carbon monoxide And water vapour.Combustion chamber using particular design burner, pyrolysis gas and pyrolytic tar can fully burn in combustion chamber, produce 900-1200 degrees Celsius of high-temperature flue gas, in combustion, further heat absorption is warming up to 900- to the water vapour in pyrolysis oil gas 1200 degrees Celsius.Then, the gaseous mixture of 900-1200 degrees Celsius of high-temperature flue gas and water vapour enters the Heat Room of direct-combustion boiler, With the superheated steam and 180-200 degrees Celsius of low-temperature flue gas that the cooling water heat exchange in direct-combustion boiler produces 300-500 degrees Celsius.
S400:Superheated steam is supplied to steam turbine generator to be used to generate electricity
In the step, superheated steam is supplied to steam turbine generator to be used to generate electricity.Inventor has found that superheated steam is by vapour The main air valve of turbine generator, regulating valve enter steam turbine, and the heat energy of superheated steam can be converted to the machine of turbine rotor rotation Tool energy, drives synchronous generator rotation to produce electric energy, the electric energy part of generation it is personal it is outer be connected to the grid, whole process is without secondary dirt Dye, with good social and economic benefit.Additionally, superheated steam can be additionally used in winter heating heat supply or be passed through refrigeration system use In summer air-conditioning and cryogenic system, primary energy is taken full advantage of, improve efficiency of energy utilization.
The method for the treatment of house refuse according to embodiments of the present invention is pre-processed by by house refuse, can remove life The inorganic matter such as metal, glass, fragment of brick of the overwhelming majority, is conducive to avoiding follow-up house refuse from being pyrolyzed in pyrolysis oven in rubbish living When produce flying dust, can also avoid house refuse in follow-up preprocessing process, the inorganic matter such as metal, glass is to pre-processing device Damage, while the removal of inorganic refuse advantageously reduces the energy consumption of follow-up pyrolysis oven.Organic waste is obtained after pretreatment, because of it Particle diameter is smaller, can dramatically increase the efficiency of pyrolysis processing, reduces the energy consumption of pyrolysis oven.In pyrolysis oven, organic waste pyrolysis is logical Cross heat accumulation type radiant tube to be heated, the flue gas in heat accumulation type radiant tube completely cuts off with the atmosphere in pyrolysis oven burner hearth, organic waste It is pyrolyzed under conditions of anoxybiotic, can avoids producing the secondary pollutions such as bioxin.Simultaneously because pyrolysis capacity of furnace loss is small, can keep away Exempt from organic waste and separate out tar because pyrolysis temperature is low in pyrolytic process, bond tube wall so as to avoid the occurrence of tar, block pipe The phenomenon in road.By organic waste be pyrolyzed obtained by pyrolysis oil gas supply into direct-combustion boiler, pyrolysis oil gas in combustion chamber fully Burning, obtains high-temperature flue gas, and during burning, further heat absorption is warming up to and high-temperature flue gas the vapor in pyrolysis oil gas Temperature it is consistent, the subsequent high-temperature flue gas and vapor are cold after heat exchange together into being exchanged heat with cooling water in Heat Room But water is changed into superheated steam, and high-temperature flue gas are changed into low-temperature flue gas.Superheated steam is again by the main air valve of steam turbine generator, regulating valve Into steam turbine, the heat energy of superheated steam is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce Electric energy is given birth to, the electric energy part of generation is personal to be connected to the grid outward.Superheated steam can be additionally used in winter heating heat supply or be passed through refrigeration system Unite for summer air-conditioning and cryogenic system.
With reference to Fig. 6, the method for the treatment of house refuse according to embodiments of the present invention is further included:
S500:The low-temperature flue gas that S300 is obtained supply dried process process into S100 as dried medium
In the step, the low-temperature flue gas that S300 is obtained supply dried process process into S100 as dried medium. Inventor has found, by the drying device that 180-200 degrees Celsius of low-temperature flue gas are used in pretreatment unit, on the one hand can remove The moisture gone in house refuse, reduces the energy consumption of follow-up pyrolysis oven, on the other hand can fully recycle aobvious in low-temperature flue gas The latent heat of vaporization of water vapour, significantly reduces the energy consumption of house refuse pretreatment in heat and latent heat and low-temperature flue gas.Low temperature cigarette Gas its temperature after drying device can be down to 100-110 degrees Celsius.
With reference to Fig. 7, the method for the treatment of house refuse according to embodiments of the present invention is further included:
S600:The pyrolytic carbon that S200 is obtained is supplied into gasification installation carries out gasification process
In the step, the pyrolytic carbon that S200 is obtained is supplied into gasification installation carries out gasification process, to be gasified Gas, and gasification gas is supplied the heat accumulation type radiant tube in the pyrolysis oven into S200 and used as fuel.Thus, can significantly reduce The energy consumption of pyrolysis oven, while the pyrolytic carbon of low heat value to be converted into the gasification gas of high heating value, is truly realized the " harmless of rubbish Change, minimizing, resource " treatment.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, these embodiments are only description Property, and the present invention is limited never in any form.
Embodiment
With reference to Fig. 8, the house refuse of moisture content 50wt% is sent into sorting unit, remove metal therein, glass, fragment of brick Deng inorganic matter, drying device is entered back into, the moisture in removal house refuse makes the moisture content of house refuse be down to a 10wt% left sides The right side, is delivered to breaker and goes out to be crushed finally by conveyer belt.
Pyrolysis oven outward appearance is Horizontal cylinder shape structure, and chain-plate type furnace bottom material is high temperature resistant steel plate with holes, and furnace bottom is carrier bar Formula structure and removable, remaining furnace binding is fixed.Chain-plate type furnace bottom is arranged with heat accumulation type radiant tube up and down, and along chain The direction of transfer of board-like furnace bottom, near the upstream arrangement organic waste entrance of chain-plate type furnace bottom, organic waste entrance on pyrolysis oven It is connected with organic waste outlet, the arranged downstream on pyrolysis oven near chain-plate type furnace bottom has pyrolytic carbon to export, pyrolysis oven top cloth Pyrolysis oil gas vent is equipped with, and is suitable to be pyrolyzed organic waste, to obtain pyrolytic carbon and pyrolysis oil gas.Organic waste leads to The chain-plate type furnace bottom that feed auger conveying device enters pyrolysis oven by organic waste entrance is crossed, fabric thickness is 150mm, pyrolysis Time is 80min, and the heat accumulation type radiant tube arranged by the both sides up and down of chain-plate type furnace bottom can be to having on chain-plate type furnace bottom Machine rubbish is heated to more than 900 degrees Celsius, and organic waste is divided into lower pyrolysis in 900 degrees Celsius of high temperature, at the same time chain-plate type Furnace bottom is moved along direction of transfer, and after a period of time, organic waste pyrolysis is pyrolytic carbon and pyrolysis oil gas.Pyrolytic carbon passes through chain The discharging spiral of board-like furnace bottom is exported through pyrolytic carbon and discharged, and delivering to gasification installation carries out gasification process, obtains the gas that gasifies, and by gas The heat accumulation type radiant tube that change gas is supplied into pyrolysis oven is used as fuel.Pyrolysis oil gas is entered by the pyrolysis oil gas vent of furnace roof Enter pyrolysis oil air pipe.Pyrolysis oil air pipe is connected with the combustion chamber of direct-combustion boiler, and pyrolysis oil gas is entered by pyrolysis oil air pipe Enter the combustion chamber of direct-combustion boiler, be pyrolyzed the main component of oil gas pyrolysis gas and the pyrolytic tar such as including hydrogen, methane, carbon monoxide And water vapour.Combustion chamber using particular design burner, pyrolysis gas and pyrolytic tar can fully burn in combustion chamber, produce 950 degrees Celsius of high-temperature flue gas, in combustion, further heat absorption is warming up to 950 degrees Celsius to the water vapour in pyrolysis oil gas. Then, the gaseous mixture of 950 degrees Celsius of high-temperature flue gas and water vapour enter direct-combustion boiler Heat Room, with direct-combustion boiler in it is cold But water heat exchange produces 420 degrees Celsius, the superheated steam of 3.82MPa and 180 degrees Celsius of low-temperature flue gas.Heat integration efficiency Reach more than 80%.The drying device that 180 degrees Celsius of low-temperature flue gas are used in pretreatment unit, low-temperature flue gas are filled through drying Postponing its temperature can be down to 100 degrees Celsius.Superheated steam enters steam turbine by the main air valve of steam turbine generator, regulating valve, can The heat energy of superheated steam is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce electric energy, generated electricity Power is 50MW, and the electric energy part of generation is personal to be connected to the grid outward.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (8)

1. it is a kind of process house refuse system, it is characterised in that including:
There is pretreatment unit, the pretreatment unit house refuse entrance, inorganic refuse outlet and organic waste to export;
There is chain-plate type furnace bottom, the furnace bottom is arranged with heat accumulation type radiant tube, the storage up and down in pyrolysis oven, the pyrolysis oven , perpendicular to the direction of transfer of the furnace bottom, and the regenerator radiant tube is in the furnace bottom for the direction of insertion of hot cell radiant tube Direction of transfer is uniformly distributed, near the upstream arrangement organic waste entrance of the furnace bottom, the organic waste on the pyrolysis oven Entrance is connected with organic waste outlet, and the arranged downstream on the pyrolysis oven near the furnace bottom has pyrolytic carbon to export, institute Stating pyrolysis oven top layout has pyrolysis oil gas vent;
There is connected combustion chamber and Heat Room, the combustion chamber placement has pyrolysis oil gas in direct-combustion boiler, the direct-combustion boiler Entrance, the pyrolysis oil gas entrance is connected with the pyrolysis oil gas vent, and the Heat Room is disposed with cooling water inlet, overheat and steams Vapor outlet and low-temperature flue gas are exported,
Steam turbine generator, the steam turbine generator is connected with superheated steam outlet.
2. system according to claim 1, it is characterised in that the pretreatment unit includes the sorting dress being sequentially connected Put, drying device and breaker.
3. system according to claim 2, it is characterised in that the low-temperature flue gas outlet and described with drying device phase Even.
4. the system according to any one of claim 1-3, it is characterised in that further include:
There is gasification furnace, the gasification furnace pyrolytic carbon entrance and gasification gas to export, and the pyrolytic carbon entrance goes out with the pyrolytic carbon Mouth is connected, and the gasification gas outlet is connected with the heat accumulation type radiant tube in the pyrolysis oven.
5. the method that the system any one of a kind of use claim 1-4 processes house refuse, it is characterised in that bag Include:
(1) house refuse is supplied into the pretreatment unit and is pre-processed, to obtain inorganic refuse and organic waste;
(2) organic waste is supplied into the pyrolysis oven, to obtain pyrolytic carbon and pyrolysis oil gas;
(3) the pyrolysis oil gas is supplied into combustion chamber and Heat Room into the direct-combustion boiler successively, is steamed to obtain overheat Vapour and low-temperature flue gas;
(4) supplying to the steam turbine generator superheated steam is used to generate electricity.
6. method according to claim 5, it is characterised in that the pretreatment includes sorting process, dried process successively And break process.
7. method according to claim 6, further includes:
(5) low-temperature flue gas that step (3) is obtained are supplied dried process process into step (1) as dried medium.
8. method according to claim 7, it is characterised in that further include:
(6) supplying the pyrolytic carbon that step (2) is obtained carries out gasification process into the gasification installation, to be gasified Gas, and the gasification gas is supplied the heat accumulation type radiant tube in the pyrolysis oven into step (2) and used as fuel.
CN201611192907.8A 2016-12-21 2016-12-21 System and method for treating household garbage Pending CN106670211A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826179A (en) * 2020-07-06 2020-10-27 武汉光谷蓝焰新能源股份有限公司 Biomass pyrolytic carbon heat cogeneration system
CN113831926A (en) * 2021-10-13 2021-12-24 深圳市捷晶能源科技有限公司 Anaerobic pyrolysis treatment device and method for printing ink slag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826179A (en) * 2020-07-06 2020-10-27 武汉光谷蓝焰新能源股份有限公司 Biomass pyrolytic carbon heat cogeneration system
CN113831926A (en) * 2021-10-13 2021-12-24 深圳市捷晶能源科技有限公司 Anaerobic pyrolysis treatment device and method for printing ink slag

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