CN102699007A - Method for treating household garbage and realizing co-production by using lime kiln - Google Patents

Method for treating household garbage and realizing co-production by using lime kiln Download PDF

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Publication number
CN102699007A
CN102699007A CN2012101751013A CN201210175101A CN102699007A CN 102699007 A CN102699007 A CN 102699007A CN 2012101751013 A CN2012101751013 A CN 2012101751013A CN 201210175101 A CN201210175101 A CN 201210175101A CN 102699007 A CN102699007 A CN 102699007A
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China
Prior art keywords
lime
kiln
flue gas
house refuse
lime kiln
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CN2012101751013A
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Chinese (zh)
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郭涵
郭文龙
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Individual
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Individual
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Priority to CN2012101751013A priority Critical patent/CN102699007A/en
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  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a method for treating household garbage and realizing co-production by using a lime kiln. The method comprises the following steps of: conveying acidic odor generated in a garbage library into a garbage incinerator to serve as combustion air; after high-temperature flue gas is cooled by a steam boiler, adsorbing the high-temperature flue gas by using a lime grinder, dedusting the high-temperature flue gas by using a cloth bag and discharging the dedusted high-temperature flue gas into air, or adsorbing the high-temperature flue gas into the kiln through a pipeline for secondary high-temperature calcination; and stirring ash subjected to iron removal, garbage leachate and quicklime, and conveying the mixture into the kiln for high-temperature calcination together with fuel coal and lumpy limestone. By the method, resource advantages can be rationally allocated, garbage treatment, waste heat power generation, lime production and organic fertilizers are combined, so that garbage is reduced, recycled and innocently treated, industrial chains of recycling, mutual dependence and scientific development are realized, and aims of saving energy, and reducing emission and cost are fulfilled, an environment-friendly effect is achieved, and benefits are brought to humans.

Description

Utilize lime kiln to handle the method that house refuse realizes coproduction
Technical field
The present invention relates to utilize lime kiln to handle house refuse, realize method with the lime coproduction.
Background technology
At present, the processing of house refuse is generally adopted like single modes such as landfill, burning, compost or garbage powers.This single way is not only wasted a large amount of investments in fixed assets and land resource, and in the garbage disposal process, causes easily that the excessive 、 bioxin of foul smell exceeds standard, secondary pollution such as lime-ash and drop liquid flooding are indiscriminate, brings influence to surrounding enviroment.Patent application CN101628792 discloses a kind of method of utilizing cement kiln to handle house refuse, has solved the problem of domestic garbage was harmlessly treated, and the energy that rationally utilizes waste incineration to produce.But it has only solved the handling problem of house refuse in the cement plant.
Summary of the invention
Technical problem to be solved by this invention is: a kind of lime kiln associated treatment house refuse of utilizing is provided, and realizes the co-production that domestic rubbish disposal, cogeneration, biological organic fertilizer and lime are produced
Technical solution of the present invention is: house refuse is transported to the rubbish storage vault; The acid foul smell that rubbish in the storehouse produces is sent into incinerator as combustion air with high pressure positive blower through pipeline; After the high-temperature flue gas that produces in the stove is lowered the temperature through steam boiler; Through entering atmosphere behind lime grinder absorption and the bag-type dust or through carrying out high-temperature calcination once more in the pipeline suction kiln; The lime-ash that produces stirs with rubbish drop liquid and quick lime after deironing, send in the kiln with fire coal, block lime stone together, high-temperature calcination in kiln.
The flue gas that lime kiln is discharged in material calcining and lime stone preheating is sent into the dry house refuse of cylindrical drier, sends into lime kiln then, and the acid foul smell of discharging in the drying machine enters atmosphere through bag-type dust after through high-temperature calcination in the lime kiln again.
Incinerator exhaust opening place is provided with steam boiler, and the heat energy that produces after the waste incineration is used to drive steam turbine generator and generates electricity.
Send into the lime grinder from the flue gas that steam boiler is discharged, utilize and contain calcareous alkaline material neutralization in the grinder, clear up acid foul smell and poisonous and harmful substance in the flue gas, enter atmosphere after sending into the deduster filter then.
Send in the lime kiln after the flue gas that can part be discharged from steam boiler and the air mixing, carry out the secondary high-temperature calcination.
House refuse is through screening, and dirt mixes changing food waste, adds turfy soil, zeolite etc. and makes biological organic fertilizer, and the acid foul smell that composting produces is sent into lime kiln and carried out high-temperature process.
Technique effect of the present invention is: but its reasonable disposition resources advantage; Combine garbage disposal, cogeneration, lime production and fertilizer; Make garbage disposal reach minimizing, resource and innoxious; Realize recycle, rely on each other, the industry chain (supply chain) of scientific development, reach energy-saving and emission-reduction, reduce cost, clean environment firendly, the purpose that promotes the well-being of mankind.
Description of drawings
Fig. 1 utilizes lime kiln to handle the process chart of house refuse.
The specific embodiment
Technological process is as shown in Figure 1, and the house refuse that the city is produced is transported in the rubbish storage vault in the lime factory with cram packer.Be provided with ventilation shaft in the storehouse, the acid foul smell that rubbish in the storehouse produces sent into the waste incineration furnace bottom with high pressure positive blower, as the combustion air of consumer waste incineration; House refuse is after the incinerator internal combustion, and the high-temperature flue gas of generation is through after the steam boiler cooling, can be according to productions needs, or through the lime grinder adsorb and bag-type dust after enter atmosphere; Or carry out high-temperature calcination once more in sucking kiln through closed conduit from the lime kiln bottom.
The lime-ash that produces behind the consumer waste incineration stirs with rubbish drop liquid and quick lime after deironing, send into uniformly from the top of lime kiln in the kiln with the conveying equipment of sealing then and coal-fired, block lime stone together, in lime kiln, carry out high-temperature calcination.
Lime kiln top is provided with bagroom; The flue gas that lime kiln is discharged in material calcining and lime stone preheating; Suck in the cylindrical drier house refuse is dry with air-introduced machine earlier; Get in the lime kiln as combustion air then, the acid foul smell of discharging in the drying machine enters atmosphere through bag-type dust after through high-temperature calcination in the lime kiln again.
If house refuse quantity is more; Flue gas lime kiln after the burning can absorb Wan; Can steam boiler be installed at incinerator exhaust opening place, the heat energy that produces after a large amount of waste incinerations is changed into steam, be used to drive steam turbine generator and generate electricity; Institute's generated energy is used for lime factory, and lime production cost is reduced greatly.
The dirt that house refuse is sieved out mixes changing food waste, adds turfy soil, zeolite etc. and makes biological organic fertilizer.The acid foul smell that produces in the biological organic fertilizer manufacture process is sent into and is carried out high-temperature process in the lime kiln, keeps plant area and surrounding enviroment not to have secondary pollutions such as stink.
Domestic waste collection is transported in the rubbish storage vault of lime factory.This storehouse not only seals, and in lime production and consumer waste incineration processing procedure, the acid foul smell in the storehouse of having dissolved makes the rubbish storehouse keep negative pressure state constantly, prevents that foul smell is excessive.The walking grab claw is set in the storehouse, and according to need of work, grab claw can be rendered to house refuse in the rubbish pre-processing device at any time.
In lime factory, build rubbish preliminary treatment workshop and incinerator.After preliminary treatment such as the fragmentation of the process of the house refuse in the rubbish storehouse, extrusion dehydration, heated-air drying, send in the incinerator and burn.House refuse produces great amount of heat energy in combustion process, the water in the steam copper that will be complementary with incinerator constantly heats, and the steam of formation drives steam turbine generator and generates electricity.The ability of generating electricity can directly be used for the production of lime factory, reduces the lime production cost.
By the dissolved flue gas of big portion heat of steam boiler, under suction function, get into the lime grinder, contain calcareous alkaline matter in the grinder, neutralized, cleared up acid foul smell and the poisonous and harmful substance in the flue gas.The grinder afterbody is equipped with sack cleaner, and blower fan sucks deduster with the gas in the grinding machine, enters atmosphere after filtering.
If exhaust gas volumn is more, the grinder adsorption capacity is limited, can carry out the secondary high-temperature calcination with sending in the lime kiln after part of smoke and the air mixing.
Dirt and changing food waste from house refuse is sieved out suitably add additives such as turfy soil, zeolite, promptly can be made into fertilizer, are used for afforestation, transform barren beach, salt-soda soil and afforestation etc.
Incineration treatment of garbage factory, rubbish cogeneration factory, biological organic fertilizer factory and lime factory are combined, interdependence, mutual supplement with each other's advantages, in same place, same production line accomplished several kinds of different production work.
Be used for pretreated dry house refuse to the waste heat that produces in the lime production process, make dried house refuse reach the degree that to burn basically.
Heat energy, lime-ash, drop liquid, harmful exhaust and the flue gas that waste incineration produces is sent to afterheat generating system respectively, the lime production system is recycled or harmless treatment; The electric energy that cogeneration produces is used for lime factory and produces.
The dirt that rubbish sifts out, changing food waste can combine with biological organic fertilizer as the raw materials for production of fertilizer, process fertilizer; The acid foul smell that produces in the biological organic fertilizer manufacture process can pass through lime kiln high temperature rubbish, does not cause peripheral secondary pollution.Can combine with old refuse landfill, the combustible that sifts out is used for burning electricity generation, and fertile soil is sent to biological organic fertilizer factory processing and utilization.
The many areas of China do not have the cement plant, and have only lime factory, therefore, utilize lime kiln to handle house refuse, are to solve China's urban and rural domestic refuse quagmire yet, reach a kind of method of minimizing, innoxious and comprehensive utilization of resources house refuse.

Claims (6)

1. utilize lime kiln to handle the method that house refuse realizes coproduction; It is characterized in that; House refuse is transported to the rubbish storage vault, the acid foul smell that rubbish in the storehouse produces is sent into incinerator as combustion air with high pressure positive blower through pipeline, after the high-temperature flue gas that produces in the stove is lowered the temperature through steam boiler; Through entering atmosphere behind lime grinder absorption and the bag-type dust or through carrying out high-temperature calcination once more in the pipeline suction kiln; The lime-ash that produces stirs with rubbish drop liquid and quick lime after deironing, send in the kiln with fire coal, block lime stone together, high-temperature calcination in kiln.
2. the lime kiln of utilizing as claimed in claim 1 is handled the method that house refuse realizes coproduction; It is characterized in that; The flue gas that lime kiln is discharged in material calcining and lime stone preheating is sent into the dry house refuse of cylindrical drier; Send into lime kiln then, the acid foul smell of discharging in the drying machine enters atmosphere through bag-type dust after through high-temperature calcination in the lime kiln again.
3. the lime kiln of utilizing as claimed in claim 1 is handled the method that house refuse realizes coproduction, it is characterized in that incinerator exhaust opening place is provided with steam boiler, and the heat energy that produces after the waste incineration is used to drive steam turbine generator and generates electricity.
4. the lime kiln of utilizing as claimed in claim 3 is handled the method that house refuse realizes coproduction; It is characterized in that; Send into the lime grinder from the flue gas that steam boiler is discharged; Utilize and contain the neutralization of calcareous alkaline material in the grinder, clear up acid foul smell and poisonous and harmful substance in the flue gas, enter atmosphere after sending into the deduster filter then.
5. the lime kiln of utilizing as claimed in claim 4 is handled the method that house refuse realizes coproduction, it is characterized in that, sends in the lime kiln after the flue gas that can part be discharged from steam boiler and the air mixing, carries out the secondary high-temperature calcination.
6. the lime kiln of utilizing as claimed in claim 1 is handled the method that house refuse realizes coproduction; It is characterized in that house refuse is through screening, dirt mixes changing food waste; Add turfy soil, zeolite etc. and make biological organic fertilizer, the acid foul smell that composting produces is sent into lime kiln and is carried out high-temperature process.
CN2012101751013A 2012-05-31 2012-05-31 Method for treating household garbage and realizing co-production by using lime kiln Pending CN102699007A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100552A (en) * 2013-01-22 2013-05-15 蒲仁建 Method and system for carrying out thermal treatment on household garbage by using brick kiln
CN104058614A (en) * 2014-07-02 2014-09-24 南京凯盛国际工程有限公司 System of cement kiln for co-treatment of household garbage
CN109373324A (en) * 2018-11-27 2019-02-22 中国中元国际工程有限公司 A kind of garbage disposal association system and method
CN115520867A (en) * 2022-09-14 2022-12-27 首钢京唐钢铁联合有限责任公司 Method for increasing concentration of carbon dioxide in lime kiln flue gas

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1468818A (en) * 2003-01-05 2004-01-21 江苏正昌集团有限公司 City domestic garbage treating process
CN1533991A (en) * 2003-03-27 2004-10-06 徐宝安 Power generating heat supplying clean production system using city sewage and garbage resources
CN1844747A (en) * 2006-04-28 2006-10-11 合肥水泥研究设计院 Cement rotary kiln and incinerator joint treatment system of municipal solid waste
CN101028628A (en) * 2006-03-03 2007-09-05 尹小林 Method for treating urban domestic refuse by cement kiln
CN101251045A (en) * 2008-03-18 2008-08-27 黄家笙 Biomass energy circulating power generation process and power generation system thereof
JP4527243B2 (en) * 2000-05-29 2010-08-18 太平洋セメント株式会社 How to use the lime kiln

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4527243B2 (en) * 2000-05-29 2010-08-18 太平洋セメント株式会社 How to use the lime kiln
CN1468818A (en) * 2003-01-05 2004-01-21 江苏正昌集团有限公司 City domestic garbage treating process
CN1533991A (en) * 2003-03-27 2004-10-06 徐宝安 Power generating heat supplying clean production system using city sewage and garbage resources
CN101028628A (en) * 2006-03-03 2007-09-05 尹小林 Method for treating urban domestic refuse by cement kiln
CN1844747A (en) * 2006-04-28 2006-10-11 合肥水泥研究设计院 Cement rotary kiln and incinerator joint treatment system of municipal solid waste
CN101251045A (en) * 2008-03-18 2008-08-27 黄家笙 Biomass energy circulating power generation process and power generation system thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100552A (en) * 2013-01-22 2013-05-15 蒲仁建 Method and system for carrying out thermal treatment on household garbage by using brick kiln
CN103100552B (en) * 2013-01-22 2015-04-01 蒲仁建 Method and system for carrying out thermal treatment on household garbage by using brick kiln
CN104058614A (en) * 2014-07-02 2014-09-24 南京凯盛国际工程有限公司 System of cement kiln for co-treatment of household garbage
CN104058614B (en) * 2014-07-02 2016-03-09 南京凯盛国际工程有限公司 The system of cement kiln synergic processing house refuse
CN109373324A (en) * 2018-11-27 2019-02-22 中国中元国际工程有限公司 A kind of garbage disposal association system and method
CN115520867A (en) * 2022-09-14 2022-12-27 首钢京唐钢铁联合有限责任公司 Method for increasing concentration of carbon dioxide in lime kiln flue gas
CN115520867B (en) * 2022-09-14 2024-02-09 首钢京唐钢铁联合有限责任公司 Method for improving carbon dioxide concentration in lime kiln flue gas

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Application publication date: 20121003