CN1661278A - Technique for generating electricity through gasifying ramification of garbage - Google Patents

Technique for generating electricity through gasifying ramification of garbage Download PDF

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Publication number
CN1661278A
CN1661278A CN 200410014191 CN200410014191A CN1661278A CN 1661278 A CN1661278 A CN 1661278A CN 200410014191 CN200410014191 CN 200410014191 CN 200410014191 A CN200410014191 A CN 200410014191A CN 1661278 A CN1661278 A CN 1661278A
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China
Prior art keywords
rdf
garbage derivatived
gaseous fuel
electricity generation
generation technology
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CN 200410014191
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Chinese (zh)
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CN100472135C (en
Inventor
郝波
许志刚
蒋文寅
黄建伟
徐东旭
周育东
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JIANGSU ZHENGCHANG GROUP CORP Ltd
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JIANGSU ZHENGCHANG GROUP CORP Ltd
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Priority to CNB2004100141913A priority Critical patent/CN100472135C/en
Publication of CN1661278A publication Critical patent/CN1661278A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste

Abstract

A process to have RDF gasified for electric power generation includes feeding RDF in fluidization furnace and blowing hot air into the furnace to let RDF be fluidized and gasified in conic firepot and to evaporate RDF water content off, rising temp up to 500-800 deg.C for gasifying and pyrolysing organic material to produce carbon particles and gas fuel, leading gas out and storing it for being used in gas generator after dust removing, cooling and purifying.

Description

A kind of garbage derivatived thing (RDF) gasifying electricity generation technology
Affiliated technical field
The present invention relates to a kind of technology of utilizing the house refuse generating, especially garbage derivatived thing (RDF) is converted into the technology of gaseous fuel generating.
Technical background
Along with the development of Chinese Urbanization and the raising of resident living level, and domestic waste output rises year by year, the quality of rubbish is also improving, refuse thermal value increases gradually, rubbish unit weight, content of ashes and moisture content then decrease, and it will be global inevitable development trend that rubbish adds utilization as a kind of energy.
Urban Garbage Treatment in China is mainly used three kinds of methods, i.e. sanitary landfills, and During High-Temperature Composting, burning disposal does not also have appearance effectively to utilize the process of garbage power.Landfill method investment is little, instant effect, and treating capacity is big, but permanently takies a large amount of soils, and the soil severe contamination distributes stench, and the biogas of generation is serious to atmosphere pollution; Though composting mode is converted into fertilizer with rubbish, fertilizer efficiency is low, and the peasant is unwilling to use; Burning disposal is taken up an area of for a short time, and heat energy can utilize, but produces secondary pollution, and discharging carcinogenic substance and foul gas material cause serious air pollution pollution.
Summary of the invention
The technology that the purpose of this invention is to provide a kind of garbage derivatived thing (RDF) gas generating of suitable China's actual conditions.
In order to realize above-mentioned technical purpose, the present invention takes following technical scheme:
The processing step of garbage derivatived thing (RDF) gas generating is garbage derivatived thing (RDF), gasification, dedusting, cooling and purifying, storage, combustion power generation.
Further, the temperature during described the gasification is 500-800 ℃, and the composition of the gaseous fuel of generation is CH 4, CO, CO 2Mist with the hydrocarbon composition.
Further, described dedusting is with mechanical dust collector gaseous fuel to be separated with ash.
Further, described cooling and purifying is with hydrofilter, heat exchanger, gas-liquid separator it to be carried out further dedusting dehydration, fine impurity in the gaseous fuel and tar are removed, and be cooled to normal temperature, gaseous fuel through fully cooling removal of impurities enters the cyclone liquid gas separator, and the water droplet that gaseous fuel is carried secretly is removed.
Further, described storage is to be stored in gas tank with the back-fire relief water seal.
Owing to adopted technique scheme, garbage derivatived thing (RDF) is rubbish through screening, pulverize, dry, doping granulation and the particulate material that forms, use the generating of garbage derivatived thing (RDF) gas, efficient can improve more than 35%, near 3 times of conventional burning electricity generation, garbage derivatived thing (RDF) gasifying electricity generation produces the De dioxins materials seldom simultaneously, and environmental pollution is little.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a process route view of the present invention.
The specific embodiment
Among the embodiment as shown in the figure, the processing step of concrete garbage derivatived thing (RDF) gas generating is garbage derivatived thing (RDF) gasification, dedusting, cooling and purifying, storage, combustion power generation.
1, gasification:
Garbage derivatived thing (RDF) feeds in the taper fluidisation stove equably by conveying machinery, air is blown into from gasification furnace bottom air inlet mouth after the hot-blast stove preheating by blower fan simultaneously, garbage derivatived thing (RDF) is in suspend fluidized fluidization in the taper burner hearth under the air-flow effect.Garbage derivatived thing (RDF) is subjected to rapid intensification of air-flow effect and also evaporates moisture content gradually, and temperature is increased to 500-800 ℃, and organic matter begins pyrolytic gasification under the situation of anoxic, produces a large amount of carbon granules, gaseous fuel (mainly by CH 4, CO, CO 2Mist with the hydrocarbon composition).Gaseous fuel flows out from the outlet of taper fluidisation furnace roof portion, and temperature is controlled at about 500 ℃, and enters dust pelletizing system under the effect of air-introduced machine.
Along with the carrying out of garbage derivatived thing (RDF) dry thermal cracking, remaining carbon residue reaches behind the burning-point and burns after the organic matter pyrolysis, provides thermal source for the garbage derivatived thing (RDF) of just having gone into stove simultaneously.The fusing of noncombustibles matter portions such as remaining inorganic dirt bonds together, and is discharging outside the gasification furnace after water-cooled under the gravity effect.
2, dedusting:
Under the effect of air-introduced machine, hot fuel enters dust pelletizing system, by the firsts and seconds cyclone separator gaseous fuel is separated with ash.Ash directly falls into the grey storehouse of storage, continuously discharges with conveying worm, and the gaseous fuel behind the separation ash enters the cooling and purifying system.
3, cooling and purifying:
Under the effect of air-introduced machine, hot fuel enters in the gravity spray scrubber 1, cooling water sprays into from top and middle part, gaseous fuel is cooled to below 300 ℃, and remaining ash in the drip washing gaseous fuel and part tar, gaseous fuel enters among spray washing deduster II, the spray washing deduster III with reflux type gaseous fuel is further washed and is cooled to below 100 ℃ then.Cold air fuel passes through the firsts and seconds bubble dust collector again with reflux type, and gaseous fuel fully contacts with water, and the mass transfer exchange is removed fine impurity in the gaseous fuel and tar, and further is cooled to normal temperature.Gaseous fuel through fully cooling removal of impurities enters the cyclone liquid gas separator, and the water droplet that gaseous fuel is carried secretly is removed.
4, store:
Gaseous fuel is carried by roots blower, enters in the wet method basin through the back-fire relief water seal and stores.
5, combustion power generation:
Gaseous fuel is sent into the generating of gas engine pushing generator group by basin through water seal, and transportation and distrubution apparatus is delivered to the user with power supply or is incorporated into the power networks.

Claims (7)

1, a kind of garbage derivatived thing (RDF) gasifying electricity generation technology is characterized in that the processing step of garbage derivatived thing (RDF) gas generating is garbage derivatived thing (RDF) gasification, dedusting, cooling and purifying, storage, combustion power generation.
2, a kind of garbage derivatived thing according to claim 1 (RDF) gasifying electricity generation technology is characterized in that described gasification is that employing air inlet and charging aperture are arranged on the bottom, burner hearth is a back taper fluidisation stove.
3, a kind of garbage derivatived thing according to claim 1 (RDF) gasifying electricity generation technology, the temperature when it is characterized in that described the gasification is 500-800 ℃, the composition of the gaseous fuel of generation is CH 4, CO, CO 2Mist with the hydrocarbon composition.
4, a kind of garbage derivatived thing according to claim 1 (RDF) gasifying electricity generation technology is characterized in that described dedusting is with mechanical dust collector gaseous fuel to be separated with ash.
5, a kind of garbage derivatived thing according to claim 1 (RDF) gasifying electricity generation technology, it is characterized in that described cooling and purifying is with hydrofilter, heat exchanger, gas-liquid separator it to be carried out further dedusting dehydration, fine impurity in the gaseous fuel and tar are removed, and be cooled to normal temperature, gaseous fuel through fully cooling removal of impurities enters the cyclone liquid gas separator, and the water droplet that gaseous fuel is carried secretly is removed.
6, a kind of garbage derivatived thing according to claim 5 (RDF) gasifying electricity generation technology is characterized in that described hydrofilter is impurity and the tar that adopts in three grades of spray washing dedusters and the secondary foam dust removing device removal gaseous fuel.
7, a kind of garbage derivatived thing according to claim 1 (RDF) gasifying electricity generation technology is characterized in that described storage is to be stored in gas tank with the back-fire relief water seal.
CNB2004100141913A 2004-02-25 2004-02-25 Technique for generating electricity through gasifying ramification of garbage Active CN100472135C (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN1661278A true CN1661278A (en) 2005-08-31
CN100472135C CN100472135C (en) 2009-03-25

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101050859B (en) * 2007-04-17 2010-07-21 史金麟 Method and device for gasifying and burning domestic garbage
CN102500607A (en) * 2011-10-28 2012-06-20 北京建筑材料科学研究总院有限公司 Method for performing pyrolysis uniting building-material utilization to rubbish oversize products
CN102803440A (en) * 2009-06-16 2012-11-28 拉斯·约翰森 Device for continuously operating pyrolysis reactor
CN103320168A (en) * 2012-08-10 2013-09-25 襄阳品冠恒大环境工程有限公司 Power generating technology using purified garbage pyrolysis gas
CN104501171A (en) * 2014-12-24 2015-04-08 山东华源锅炉有限公司 RDF (refuse derived fuel) pyrolysis and gasification system
CN104769680A (en) * 2012-10-31 2015-07-08 芬兰国家技术研究中心股份公司 Method and apparatus for treating waste material and a product gas
CN105363756A (en) * 2014-08-20 2016-03-02 福建正仁环保有限公司 Domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process
CN105885954A (en) * 2014-12-31 2016-08-24 苏振江 Combustible refuse gasifying power generation system
CN107442551A (en) * 2017-07-27 2017-12-08 光大环保技术研究院(南京)有限公司 Refuse disposal system and method for disposal based on plasma gasification technology

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101050859B (en) * 2007-04-17 2010-07-21 史金麟 Method and device for gasifying and burning domestic garbage
CN102803440A (en) * 2009-06-16 2012-11-28 拉斯·约翰森 Device for continuously operating pyrolysis reactor
CN102500607A (en) * 2011-10-28 2012-06-20 北京建筑材料科学研究总院有限公司 Method for performing pyrolysis uniting building-material utilization to rubbish oversize products
CN103320168A (en) * 2012-08-10 2013-09-25 襄阳品冠恒大环境工程有限公司 Power generating technology using purified garbage pyrolysis gas
CN104769680A (en) * 2012-10-31 2015-07-08 芬兰国家技术研究中心股份公司 Method and apparatus for treating waste material and a product gas
CN105363756A (en) * 2014-08-20 2016-03-02 福建正仁环保有限公司 Domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process
CN104501171A (en) * 2014-12-24 2015-04-08 山东华源锅炉有限公司 RDF (refuse derived fuel) pyrolysis and gasification system
CN104501171B (en) * 2014-12-24 2017-09-29 山东华源锅炉有限公司 Garbage derivatived fuel (RDF) pyrolysis gasification system
CN105885954A (en) * 2014-12-31 2016-08-24 苏振江 Combustible refuse gasifying power generation system
CN107442551A (en) * 2017-07-27 2017-12-08 光大环保技术研究院(南京)有限公司 Refuse disposal system and method for disposal based on plasma gasification technology

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