CN203605233U - Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device - Google Patents

Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device Download PDF

Info

Publication number
CN203605233U
CN203605233U CN201320659676.2U CN201320659676U CN203605233U CN 203605233 U CN203605233 U CN 203605233U CN 201320659676 U CN201320659676 U CN 201320659676U CN 203605233 U CN203605233 U CN 203605233U
Authority
CN
China
Prior art keywords
thermolysis
pyrolysis
gas
combustion
flue gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201320659676.2U
Other languages
Chinese (zh)
Inventor
刘联胜
吴晋湘
杜聪
苟湘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei University of Technology
Original Assignee
Hebei University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei University of Technology filed Critical Hebei University of Technology
Priority to CN201320659676.2U priority Critical patent/CN203605233U/en
Application granted granted Critical
Publication of CN203605233U publication Critical patent/CN203605233U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device. A porous medium burner is used for organizing the combustion process of low-heating-value thermolysis gas in a combustion furnace. Heat exchange is carried out between high-temperature flue gas and a furnace internal water system. Part of intermediate-temperature flue gas is extracted from the middle section of the combustion furnace to be led in a garbage thermolysis furnace, so that thermolysis of household garbage is achieved under the glue gas atmosphere (composed of N2, CO2, H2O and O2), and low-heating-value thermolysis gas is generated; the intermediate-temperature flue gas provides sufficient heat for the thermolysis process, and a good atmosphere environment for the thermolysis process is provided at the same time; after the intermediate-temperature flue gas is subjected to dedusting through a cyclone dust collector, and then the intermediate-temperature flue gas is transmitted to the porous medium burner for combustion; residue is subjected to innocent treatment. By means of the household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device, the household garbage can be processed to be energy, to be reduced in quantity, and to be in an innocent mode, and hot water or steam for the industry and life can be output. The integrated device has the advantages that thermolysis efficiency is high, thermal efficiency is high, device assembly is simple, and the environment protection effect is more obvious, and emission load of PM2.5 is lower.

Description

Domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative device
Technical field
Domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative device.
Background technology
Along with the raising of environmental consciousness, the defect of the technologies of garbage disposal such as traditional landfill, compost and burning is day by day obvious.Wherein, garbage loading embeading floor space is large, degradation time is long; Garbage compost technical finesse amount is little, efficiency is low; And the secondary pollution that waste incineration produces is very serious.
Refuse pyrolysis technology refers to the technology that rubbish is heated and produced under anaerobic or oxygen deficient atmospheres pyrolysis gas, fuel oil and carbon residue, for garbage incineration technology, refuse pyrolysis technology can effectively be controlled the discharge capacity of the pernicious gases such as bioxin, contributes to reduce the discharge of PM2.5 simultaneously.Refuse pyrolysis is a complicated technology, relates to multiple scientific domains such as renewable energy technologies, Engineering Thermophysics, chemistry.Refuse pyrolysis process is an endothermic process, and pyrolytic process can be divided into two kinds of external-heat and internal heat types.The external-heat pyrolysis device of people's developments such as the Jiang Jianfang of the Central China University of Science and Technology, utilize the heat transfer process between tubulation tissue biological matter high-temperature combustion product and rubbish, for refuse pyrolysis provides enough heats, utilize the water gas reaction of water vapour strengthening semicoke simultaneously, improve factor of created gase to 45% left and right, its pyrolysis gas is with CO, H 2, CH 4, CO 2be main, calorific value can reach 14MJ/Nm 3left and right, but residue phosphorus content after refuse pyrolysis is still higher, and the later purification Processing Equipment more complicated of pyrolysis gas.Common internal heat type refuse pyrolysis technique comprises moving bed pyrolysis technique, double loop (rotary kiln+pyrogenation incinerator) pyrolytic process, pure oxygen high temperature pyrolysis technique, double tower fluidized bed pyrolysis technique etc.Wherein, pyrolytic process provides heat by burn a part of rubbish (or auxiliary fuel) be all the other rubbish for moving bed and double loop technique, although its secondary pollution discharge capacity decreases compared with pure garbage incineration technology, still can not be ignored; In addition, early stage combustion product intervention make to contain in pyrolysis gas a large amount of N 2, pyrolysis gas calorific value is very low, if do not purify, is difficult to be used.Pure oxygen high temperature pyrolysis technique and aforementioned two kinds of techniques are similar, just do not recycle air but use pure oxygen as oxidant organize a part of rubbish early stage burn, because combustion product temperature is higher, therefore refuse pyrolysis at high temperature completes, its pyrolysis gas is with CO, H 2, CO 2for main component, calorific value is lower; Although this technique pyrolysis efficiency is very high, the use cost of pure oxygen is also very high.Double tower fluidized bed pyrolysis technique is a technology for day this month island exploitation, and double-fluidized-bed structure utilizes wherein the high-temperature heat carrier of one and semicoke to provide energy for the pyrolytic process of rubbish in another, and its pyrolysis gas calorific value is higher, but equipment relative complex.
Summary of the invention
The purpose of this utility model is to provide one way of life refuse pyrolysis and low heat value pyrolysis gas combustion integrative device, produces high-temperature flue gas by the combustion process of organizing low heat value pyrolysis gas, and take carry out the circulation technology of refuse pyrolysis as heat carrier and atmosphere.It is the technology that can effectively promote turning household garbage into energy, minimizing and harmless treatment.The utility model be porous media clean burning technology and high-efficiency refuse pyrolytic technique combine, to export hot water or the steam Prediction for Solid Waste Treatment Technology as object, the feature such as have pollutant emission low (especially can effectively control the discharge of PM2.5), pyrolysis efficiency is high, the thermal efficiency is high, equipment is simple, can be widely used in application of city life garbage process field.
The step that the domestic garbage pyrolysis that the utility model provides and low heat value pyrolysis gas combustion integrative technique comprise:
1) utilize porous media combustor to organize the combustion process of low heat value pyrolysis gas in combustion furnace, the fuel between the starting period is natural gas;
2) water system in burning produces high-temperature flue gas and combustion furnace carries out heat exchange, produces hot water or steam;
3) extract a certain amount of middle temperature flue gas (900-950 in combustion furnace stage casing oc), and imported in garbage pyrolysis furnace, make house refuse under flue gas atmosphere (by N 2, CO 2, H 2o and O 2deng the mist of composition) complete pyrolytic process, produce with CO 2, CO, N 2, H 2with the hydrocarbon low heat value pyrolysis gas that is main component; Experimental results demonstration, the low heat valve of pyrolysis gas is about 3.4MJ/Nm 3.
4) low heat value pyrolysis gas, after cyclone dust collectors are processed, is sent into porous media combustor burning; Above-mentioned technical process is cyclic process, need guarantee that refuse pyrolysis institute's calorific requirement and middle temperature flue gas provide the heat balance between heat, and the mass balance of whole system.
5) the remaining residue of refuse pyrolysis does harmless treatment; Flue gas completes after heat exchange in combustion furnace, after denitrating technique is processed, enters atmosphere.
In this cyclic process, in the time that pyrolysis gas calorific value is too low, using methane as auxiliary fuel;
Device in the domestic garbage pyrolysis that the utility model provides and low heat value pyrolysis gas combustion integrative technique mainly comprises: porous media combustor, combustion furnace, middle temperature flue gas suction tube, pyrolysis oven and spiral feeder, cyclone dust collectors, air-introduced machine and pyrolysis gas conveyance conduit etc.
Porous media combustor is made up of premixer and porous media two parts, and entirety is cylindrical structural; Low heat value pyrolysis gas injects premixer along axis, tangentially enters premixer as the natural gas of starting fluid or auxiliary fuel, and combustion air tangentially enters premixer; Fuel gas with low heat value, natural gas and air enter multi-hole medium combustion after evenly mixing in premixer.
Porous media combustor is arranged on one end of combustion furnace.
Combustion furnace is cylindrical structural, and inwall is arranged helix tube, and helix tube is divided into two sections of low temperature and high temperature, by intermediate header UNICOM.Water flows in helix tube, its flow direction and flow of flue gas opposite direction.Combustion furnace stage casing is provided with the middle temperature flue gas suction tube perpendicular to axis.
The middle temperature flue gas suction tube other end is connected with pyrolysis oven, and link position is near pyrolysis oven garbage inlet.
Pyrolysis oven is cylindrical structural.Utilize spiral feeder that house refuse is sent in pyrolysis oven, between spiral feeder and pyrolysis oven, utilize flapper to seal.
The domestic garbage pyrolysis that the utility model is related and low heat value pyrolysis gas combustion integrative technique are a kind of internal heat type circulation pyrolytic processes, adopt porous media combustor to organize the combustion process of low heat value pyrolysis gas, and utilize combustion product to provide heat and pyrolysis environment for domestic garbage pyrolysis process.For the internal heat type pyrolytic process of previously described other types, the combustion process of pyrolysis gas belongs to clean combustion process, and pollutant discharge amount significantly reduces, and can not produce the noxious materials such as bioxin, and the discharge capacity of PM2.5 significantly reduces.The utility model, to export hot water or steam as object, therefore without pyrolysis gas being carried out to cooling, decoking wet goods PROCESS FOR TREATMENT, only needs to utilize cyclone dust collectors can directly send into porous media combustor burning to pyrolysis qi exhaustion dirt, and process equipment is simplified greatly.
Accompanying drawing explanation
Fig. 1 is domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative process unit schematic diagram.
Fig. 2 is domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative process chart.
Fig. 3 is the TG-FTIR combination analysis result of domestic garbage pyrolysis under flue gas atmosphere.
Fig. 4 is domestic garbage pyrolysis aerogenesis analysis result under flue gas atmosphere.
The specific embodiment
The utility model is elaborated with reference to accompanying drawing.The equipment using in the utility model and part are commercially available prod in case of no particular description.
As shown in the figure, the 1st, spiral feeder, the 2nd, flapper, the 3rd, pyrolysis oven, the 4th, cyclone dust collectors, the 5th, air-introduced machine, the 6th, porous media combustor, the 7th, combustion furnace, 8-1 is cryogenic heat exchanger, 8-2 high-temperature heat-exchanging, the 9th, middle temperature flue gas suction tube.
The utility model mainly comprises: porous media combustor, combustion furnace, middle temperature flue gas suction tube, pyrolysis oven and spiral feeder, cyclone dust collectors, air-introduced machine and pyrolysis gas conveyance conduit etc.;
Wherein, spiral feeder 1 is positioned at the head end of pyrolysis oven 3, utilizes flapper 2 to be tightly connected between the two; Cyclone dust collectors 4 are positioned at the tail end of pyrolysis oven 3, for purifying pyrolysis gas; After air-introduced machine 5 is positioned at cyclone dust collectors 4, purposes is the negative pressure maintaining in pyrolysis oven, and pyrolysis gas is delivered into porous media combustor 6; Porous media combustor 6 is positioned at the head end of combustion furnace 7, and combustion furnace 7 inwalls are provided with high-temperature heat-exchanging 8-2 and cryogenic heat exchanger 8-1, between the two by intermediate header UNICOM; Middle temperature flue gas suction tube 9 is positioned at the centre position of combustion furnace 7, and its one end is communicated with combustion furnace 4, and the other end is communicated with pyrolysis oven head end.
Fig. 1 is domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative process unit schematic diagram, and house refuse enters spiral feeder 1 by charging aperture, is pushed away to raise entering pyrolysis oven 3; Flapper 2 is for realizing the sealing between pyrolysis oven 3 and spiral feeder 1, to avoid the air in environment to enter pyrolysis oven, destroy pyrolysis environment.Middle temperature flue gas suction tube 9 is for warm combustion product is delivered into pyrolysis oven 3, so that the needed heat of refuse pyrolysis and environment to be provided.The pyrolysis gas of pyrolysis oven 3 interior generations directly enters cyclone dust collectors 4 and carries out gas solid separation, removes particulate solid; Pyrolysis residue is discharged by the slag-drip opening of pyrolysis oven 3.Air-introduced machine 5 is for delivering into porous media combustor 6 by the low heat value pyrolysis gas after separating, and two other import of porous media combustor 6 is respectively combustion air entrance and auxiliary fuel entrance.Porous media combustor 6 is connected with combustion furnace 7, and the combustion product of low heat value pyrolysis gas carries out heat exchange with high-temperature heat-exchanging 8-2, cryogenic heat exchanger 8-1 in combustion furnace 7; Between high and low temperature heat exchanger, warm flue gas suction tube 9 in layout, for importing pyrolysis oven 3 by part temperature flue gas; Remaining low-temperature flue gas discharges out of the furnace through the back-end ductwork of combustion furnace 7, recycles other auxiliary device preheating rubbish.
Flow chart as shown in Figure 2, utilize porous media to organize low heat value pyrolysis gas (when system starts or pyrolysis gas composition is unstable, using natural gas as auxiliary fuel) combustion process in combustion furnace, high-temperature flue gas and water system carry out heat exchange and prepare hot water, low-temperature flue gas can, first for preheating house refuse, then be discharged after denitration is processed.In combustion furnace stage casing, extract warm flue gas (900-950 in part oc) send into pyrolysis oven, make the house refuse after preheating complete pyrolytic process under flue gas atmosphere, produce low heat value pyrolysis gas.Pyrolysis gas, after cyclone dust collectors purify, can directly be sent into porous media combustor burning without cooling, decoking wet goods technique; The residue that refuse pyrolysis produces does harmless treatment.
A kind of refuse pyrolysis that the utility model provides and low heat value pyrolysis gas combustion integrative technique, the specific implementation process of this technique is as follows: first utilize a set of porous medium combusting device to organize the combustion process of low heat value pyrolysis gas and the heat transfer process of high-temperature flue gas and water system; Then warm flue gas in a part is directly imported to refuse pyrolysis plant, make rubbish under flue gas atmosphere (by N 2, CO 2, H 2o and O 2deng the mist of composition) complete pyrolytic process, middle temperature flue gas is on the one hand for pyrolytic process provides enough heats, on the other hand for pyrolytic process provides favourable atmosphere; Finally low heat value pyrolysis gas is carried out, after simple process, sending into burner and burning; Residue does harmless treatment.
Fig. 3 is the TG-FTIR combination analysis result of domestic garbage pyrolysis under flue gas atmosphere.In flue gas atmosphere, the pyrolysis gas composition of house refuse comprises CO 2, H 2o, CO, hydrocarbon and N 2, H 2deng.
Fig. 4 is domestic garbage pyrolysis aerogenesis analysis result under flue gas atmosphere.In pyrolysis gas, the percent concentration peak value of main combustible CO and hydrocarbon is about 2.0% left and right, H 2peak concentration is about 0.5% left and right.The low heat valve of pyrolysis gas is about 3.4MJ/Nm 3.
Above-mentioned technique is a circulation technology, compares with conventional moving bed pyrolysis technique, twin tower circulating fluidized bed pyrolytic process and external-heat pyrolysis technique, and its pyrolysis efficiency and the thermal efficiency are higher, and solid residue still less; What export because this technique is external is not low heat value pyrolysis gas, but industry or hot water for life or steam, therefore without complicated pyrolysis gas after-treatment device, equipment composition is more simple.
The utility model is different from conventional refuse pyrolysis technique, take heat supply as main purpose, realize the harmless treatment of house refuse simultaneously, its novelty is outstanding, there is significant theory value and practical value, by contributing to promote energy, the minimizing of China's domestic waste, the technical merit of harmless treatment, there is promotion meaning for Urbanization Construction and urban sustainable development.In addition, this technique is easier to realize device miniaturization, can effectively reduce transportation, storage cost in domestic rubbish disposal process.

Claims (2)

1. one way of life refuse pyrolysis and low heat value pyrolysis gas combustion integrative device, is characterized in that mainly comprising: porous media combustor, combustion furnace, middle temperature flue gas suction tube, pyrolysis oven and spiral feeder, cyclone dust collectors, air-introduced machine and pyrolysis gas conveyance conduit; Wherein, spiral feeder is positioned at the head end of pyrolysis oven, utilizes flapper to be tightly connected between the two; Cyclone dust collectors are positioned at the tail end of pyrolysis oven, for purifying pyrolysis gas; After air-introduced machine is positioned at cyclone dust collectors; Porous media combustor is positioned at the head end of combustion furnace, and combustion furnace inwall is provided with high-temperature heat-exchanging and cryogenic heat exchanger, is communicated with between the two by intermediate header; Middle temperature flue gas suction tube is positioned at the centre position of combustion furnace, and its one end is communicated with combustion furnace, and the other end is communicated with pyrolysis oven head end.
2. device according to claim 1, is characterized in that porous media combustor is made up of premixer and porous media two parts, and entirety is cylindrical structural.
CN201320659676.2U 2013-10-25 2013-10-25 Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device Active CN203605233U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320659676.2U CN203605233U (en) 2013-10-25 2013-10-25 Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320659676.2U CN203605233U (en) 2013-10-25 2013-10-25 Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device

Publications (1)

Publication Number Publication Date
CN203605233U true CN203605233U (en) 2014-05-21

Family

ID=50717905

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320659676.2U Active CN203605233U (en) 2013-10-25 2013-10-25 Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device

Country Status (1)

Country Link
CN (1) CN203605233U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528067A (en) * 2013-10-25 2014-01-22 河北工业大学 Household refuse pyrolysis and low-heating value pyrolysis gas combustion integrated process
CN112552937A (en) * 2020-10-27 2021-03-26 南京万德斯环保科技股份有限公司 Multi-type garbage pyrolysis system and method for treating multi-type garbage by same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528067A (en) * 2013-10-25 2014-01-22 河北工业大学 Household refuse pyrolysis and low-heating value pyrolysis gas combustion integrated process
CN103528067B (en) * 2013-10-25 2015-12-09 河北工业大学 Domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative technique
CN112552937A (en) * 2020-10-27 2021-03-26 南京万德斯环保科技股份有限公司 Multi-type garbage pyrolysis system and method for treating multi-type garbage by same

Similar Documents

Publication Publication Date Title
CN103528067B (en) Domestic garbage pyrolysis and low heat value pyrolysis gas combustion integrative technique
CN203190418U (en) Novel garbage pyrolysis incineration equipment
CN101634449A (en) Method for reducing emission of carbon dioxide by circulating fluidized bed temperature flue gas circulation oxygen combustion
CN101825284B (en) Municipal solid waste heat accumulating type gasification and melting incineration system
CN202203950U (en) Organic solid waste pyrolyzation and gasification device
CN203052664U (en) High-temperature gas generating device based on porous medium combustion and thermal storage
CN111895424A (en) Garbage disposal and generator set coupling power generation system
CN102563657A (en) Refuse incineration system and refuse incineration method for zero emission of flue gas pollutants
CN2906375Y (en) Coking and heating double-purpose furnace using biomass granular fuel
CN203605233U (en) Household garbage thermolysis and low-heating-value thermolysis gas combustion integrated device
CN106642087A (en) CO2 zero emission method and CO2 zero emission system achieving interaction between fossil fuel and biomass energy
CN202757132U (en) Waste heat recycling waste pyrolysis processing device
CN103497776B (en) Thermal barrier self-circulation heating-type agriculture and forestry organic waste material pyrolysis liquefying systems
CN206739278U (en) A kind of biomass comprehensive energy utilization system
CN102734791B (en) Process for activating grate-fired flying ash semi-coke and catalytically reducing nitric oxide in boiler
CN201116777Y (en) Highly effective micro-discharge coal-burning water-heating boiler
CN206449647U (en) The clean energy resource of coal unit and biomass gasification technology multiple coupling utilizes system
CN102519047A (en) Hazardous waste harmless incineration system with low energy consumption
CN207756595U (en) A kind of electricity generation system of debirs clean utilization
CN203098053U (en) Chemical hydrogen-rich gas collecting and utilizing system
CN101131119A (en) Modularized 5000KW multi-fuel generator set
CN203797694U (en) Efficient micro-emission energy-saving boiler for recycling residual energy
CN103486605A (en) High-efficiency micro-emission energy-saving boiler capable of recycling remaining energy
CN102997219B (en) A kind of waste-heat recovery device of boiler
CN202927862U (en) Heat exchanger and waste gas treatment integrated device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant