CN1195688C - City domestic garbage treating process - Google Patents

City domestic garbage treating process Download PDF

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Publication number
CN1195688C
CN1195688C CNB031126456A CN03112645A CN1195688C CN 1195688 C CN1195688 C CN 1195688C CN B031126456 A CNB031126456 A CN B031126456A CN 03112645 A CN03112645 A CN 03112645A CN 1195688 C CN1195688 C CN 1195688C
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CN
China
Prior art keywords
rubbish
garbage
burning
fermentation
flue gas
Prior art date
Application number
CNB031126456A
Other languages
Chinese (zh)
Other versions
CN1468818A (en
Inventor
郝波
朱华东
许志刚
蒋文寅
陈栋杰
周志锋
芮华平
Original Assignee
江苏正昌集团有限公司
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.)
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Publication date
Application filed by 江苏正昌集团有限公司 filed Critical 江苏正昌集团有限公司
Priority to CNB031126456A priority Critical patent/CN1195688C/en
Publication of CN1468818A publication Critical patent/CN1468818A/en
Application granted granted Critical
Publication of CN1195688C publication Critical patent/CN1195688C/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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing

Abstract

The present invention relates to a treating technology for urban domestic garbage, which comprises the steps of storage, fermentation, treatment of waste gas and waste water in the process of fermentation, sorting, drying, burning, smoke treatment, slag clearing, etc. Waste gas generated in the process of the fermentation of the garbage in a fermenting tank is burnt as combustion air in a furnace, and waste water is sent to a sewage treatment plant for carrying out treatment, so secondary pollution from the waste gas and the waste water is reduced. Fermented garbage is burnt by being sent into an incinerator after sorted and dried, which overcomes the phenomenon of clogging a furnace chamber, enhances the heat value of garbage, effectively ensures successful running of burning, and stops generating dioxins. The technology reduces the volume of garbage by 95% and has low thermal burning decrement rate of garbage dregs, and slag after the burning of garbage can be fully used for producing road paving bricks or other materials, which reduces the cost of garbage treatment.

Description

Garbage treatment technology

Affiliated technical field

The present invention relates to a kind of treatment process of rubbish, especially the treatment process of domestic waste.

Background technology

The treatment process of traditional domestic waste has three kinds of landfill, compost and burnings, and two kinds of methods of landfill and compost all need take bigger place, and can pollute environment.

On November 27th, 2002 disclosed CN1094802C patent (application number: 97105152) disclose a kind of city house refuse treatment method, be that rubbish is discharged in the accumulator spontaneous fermentation 4-6 days, the draining that oozes that oozes after the fermentation that drop goes out sprays in the incinerator Pintsch process or carries out sewage disposal, the foul smell that produces during fermentation is sent into the incinerator internal combustion and is decomposed, rubbish after the fermentation is sent into the incinerator internal combustion, magnetic separation is sieved after isolating the scrap iron recovery to slag then, thin slag is used to pave the way or improve the soil, and last remaining thick slag is as innoxious covering soil.This treatment process directly will be sent into the stove internal combustion without sorting behind the rubbish fermentation, bulk rubbish in the rubbish or iron wire easily stop up the feeding mouth or the slag notch of incinerator, what influence was burned carries out smoothly, next is that rubbish enters incinerator before without oven dry, this refuse thermal value is little, influence temperature of combustion, easily produce Dioxins, have a strong impact on people's living environment.

Summary of the invention

The purpose of this invention is to provide and a kind ofly can not stop up incinerator, can effectively check the garbage treatment technology that produces Dioxins.

The present invention includes following processing step:

(1), stores fermentation.Fresh domestic refuse is discharged into airtight negative pressure rubbish accumulator, makes rubbish spontaneous fermentation a couple of days.

(2), the processing of waste gas, waste water in the fermenting process.Waste gas in the accumulator extracted to send in the incinerator use wind, make refuse chute maintenance negative pressure excessive simultaneously to prevent foul smell as burning; Send sewage work to handle the waste water in the accumulator.

(3), sorting.Rubbish is sorted, remove bulk rubbish and irony.

(4), oven dry.To send into through the rubbish of sorting utilizes the tail gas after burning to carry out drying as thermal source in the dryer.

(5), burn.Sending into incinerator through the rubbish after the oven dry burns.

(6), flue gas is handled.The flue gas that burning produces is sent into dual firing chamber's high-temp combustion, make it to reach and burn discharging again behind the most state entirely.

(7), cleaning slag.Slag cleaning come out of the stove and screen brickmaking and sell or do his and use.

Because the waste gas that produces in the process that has adopted technique scheme, rubbish to ferment in fermentation vat is burned as combustion air in the stove, has reduced the excessive of waste gas, has prevented the secondary pollution of waste gas; Waste water is sent to sewage work and handles, and has reduced second pollution of wastewater; Rubbish after the fermentation is sent into the incinerator internal combustion after letter sorting, oven dry, overcome the phenomenon of stopping up burner hearth, has improved the calorific value of rubbish, has guaranteed that effectively incendiary carries out and checked the generation of Dioxins smoothly; Slag behind the incineration firing can be utilized fully and make paving brick or make his usefulness, has alleviated the cost of refuse treatment.

Description of drawings

The present invention is further illustrated below in conjunction with drawings and Examples.

Accompanying drawing is a process route view of the present invention.

Embodiment

In embodiment as shown in the figure, concrete processing step is as follows:

(1), storage fermentation:

Fresh domestic refuse is discharged into airtight negative pressure rubbish accumulator, and after rubbish spontaneous fermentation was counted 3-7 days, msw water content reduced about 10%.The air that extracts the rubbish accumulator makes refuse chute keep negative pressure excessive to prevent foul smell as burning air feed.

(2), the processing of waste gas, waste water in the fermenting process:

Waste gas in the accumulator extracted to send in the incinerator use wind, make refuse chute maintenance negative pressure excessive simultaneously to prevent foul smell as burning; Send sewage work to handle the waste water in the accumulator.

(3), sorting:

With the fermentation after rubbish at first rubbish remove irony impurity through magnetic belt separator, again with the rubbish manual sorting, choose bulk rubbish.

(4), oven dry:

Send into rotary dryer through the rubbish of letter sorting and carry out drying, hot blast provides behind the air preheater indirect heat transfer by burning the back high-temperature tail gas.

(5), burn:

Sending into vertical incinerator for thermal decomposition through the rubbish after the oven dry burns.

(6), flue gas is handled:

The pyrolysis gas that rubbish process pyrolysis oven produces enters dual firing chamber with flue gas and aqueous vapor from bottom to top under the road induced draft fan effect of back, flue gas is fully burning under turbulent flow and the peroxide situation, temperature of combustion is 900 ℃ ± 30 ℃, gas residence time was greater than 2 seconds, high-temperature flue gas reaches and burns method removal acidic gas in flue gas and the flue gas particle that adopts behind the most state semidrying depickling to combine with wet dedusting and add bag-type dust entirely, discharge from exhanst gas outlet then, prevented the generation of Dioxins.

(7), cleaning slag:

Slag cleaning after burning is come out of the stove, after screening, can be used as brick-making raw material and sell.

Claims (2)

1, a kind of garbage treatment technology is characterized in that this technology may further comprise the steps:
(1), store fermentation, be about to domestic refuse and be discharged into airtight negative pressure rubbish accumulator, make rubbish spontaneous fermentation a couple of days;
(2), the processing of waste gas, waste water in the fermenting process, be about to waste gas in the accumulator and extract to send in the incinerator and use wind as burning, make refuse chute maintenance negative pressure excessive simultaneously to prevent foul smell; Send sewage work to handle the waste water in the accumulator;
(3), sorting, promptly rubbish is sorted, remove bulk rubbish and irony;
(4), oven dry, be about to send into and utilize the tail gas after burning to carry out drying in the dryer as thermal source through the rubbish of sorting;
(5), burn, promptly send into incinerator and burn through the rubbish after the oven dry;
(6), flue gas handles, and is about to the flue gas that burning produces and sends into dual firing chamber's high-temp combustion, make it to reach and burn most state entirely after the depickling dust removal process is discharged again;
(7), the cleaning slag, be about to the slag cleaning and come out of the stove and screen brickmaking and sell or do his and use.
2, garbage treatment technology according to claim 1, the depickling dust removal process that it is characterized in that flue gas adopt the semidrying depickling to combine with wet dedusting and add the method removal acidic gas in flue gas and the flue gas particle of bag-type dust.
CNB031126456A 2003-01-05 2003-01-05 City domestic garbage treating process CN1195688C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031126456A CN1195688C (en) 2003-01-05 2003-01-05 City domestic garbage treating process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031126456A CN1195688C (en) 2003-01-05 2003-01-05 City domestic garbage treating process

Publications (2)

Publication Number Publication Date
CN1468818A CN1468818A (en) 2004-01-21
CN1195688C true CN1195688C (en) 2005-04-06

Family

ID=34152510

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031126456A CN1195688C (en) 2003-01-05 2003-01-05 City domestic garbage treating process

Country Status (1)

Country Link
CN (1) CN1195688C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1730175B (en) * 2005-08-01 2010-05-12 四川海诺尔环保产业投资有限公司 Domestic refuse comprehensive treatment method
CN101786094B (en) * 2010-03-25 2011-02-09 河北省建筑材料工业设计研究院 Combined treatment process for household garbage and sewage
CN102294161A (en) * 2011-07-15 2011-12-28 沈阳环境科学研究院 Method for simultaneously removing dioxin and heavy metals from incineration smoke
CN102374543A (en) * 2011-08-08 2012-03-14 南京大学 Anaerobic fermentation-incineration combined treatment method for organic wastes
CN102424612A (en) * 2011-09-08 2012-04-25 河南省洁苑环保科技有限公司 Rapid degradation and fertilizer making technology for degradable organic matter in household garbage
CN102430557A (en) * 2011-09-08 2012-05-02 河南省洁苑环保科技有限公司 Household waste hydraulic separation technology
JP5438145B2 (en) * 2012-01-31 2014-03-12 月島機械株式会社 Pressurized flow furnace system
CN102699007A (en) * 2012-05-31 2012-10-03 郭涵 Method for treating household garbage and realizing co-production by using lime kiln
CN103398383A (en) * 2013-08-23 2013-11-20 黎汉东 Solid waste combustion system
CN104607440B (en) * 2014-12-30 2016-08-31 北京高能时代环境技术股份有限公司 A kind of based on biological dewatered life refuse processing method
CN108253434A (en) * 2018-01-22 2018-07-06 白银成 A kind of municipal pollution comprehensive treatment and utilization method, system
CN108954321A (en) * 2018-07-06 2018-12-07 常熟浦发第二热电能源有限公司 A kind of energy saving and environment friendly power generation by waste combustion technique

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Effective date of registration: 20100421

Address after: 213300 Liyang province Jiangsu City Zhengchang Road No. 28

Patentee after: Zhengchang Foodstuff Machinery Co., Ltd., Jiangsu

Address before: 213300 No. 225 Pier Street, Jiangsu, Liyang

Patentee before: Jiangsu Zhengchang Group Corp., Ltd.

ASS Succession or assignment of patent right

Owner name: JIANGSU ZHENGCHANG GRAIN MACHINE CO., LTD.

Free format text: FORMER OWNER: JIANGSU ZHENGCHANG GROUP CO., LTD.

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Free format text: CORRECT: ADDRESS; FROM: 213300 NO.225, MATOU STREET, LIYANG CITY, JIANGSU PROVINCE TO: 213300 NO.28, ZHENGCHANG ROAD, LIYANG CITY, JIANGSU PROVINCE