CN106871126A - A kind of processing method of house refuse low-temperature carbonization innoxious burning - Google Patents

A kind of processing method of house refuse low-temperature carbonization innoxious burning Download PDF

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Publication number
CN106871126A
CN106871126A CN201710003365.3A CN201710003365A CN106871126A CN 106871126 A CN106871126 A CN 106871126A CN 201710003365 A CN201710003365 A CN 201710003365A CN 106871126 A CN106871126 A CN 106871126A
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CN
China
Prior art keywords
house refuse
low
carbonization
pyrolysis oven
blower fan
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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.)
Pending
Application number
CN201710003365.3A
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Chinese (zh)
Inventor
易师
周艳
张柏林
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Changsha Convergent Environment Technology Co Ltd
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Changsha Convergent Environment Technology Co Ltd
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 Changsha Convergent Environment Technology Co Ltd filed Critical Changsha Convergent Environment Technology Co Ltd
Priority to CN201710003365.3A priority Critical patent/CN106871126A/en
Publication of CN106871126A publication Critical patent/CN106871126A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/10—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/12—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/20—Dewatering by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/301—Treating pyrogases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/304—Burning pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/60—Separating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/102—Combustion in two or more stages with supplementary heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/20—Supplementary heating arrangements using electric energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/28—Plastics or rubber like materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/30—Halogen; Compounds thereof
    • F23J2215/301—Dioxins; Furans

Abstract

The invention provides a kind of processing method of house refuse low-temperature carbonization innoxious burning, house refuse is pre-processed first, it is subsequently adding in pyrolysis oven, connection exhaust treatment system, starting blower fan makes pyrolysis oven negative pressure state, pyrolysis oven is heated by external heating device, plastic containing chlorine therein is carried out into carbonization degraded；Then the abundant spontaneous combustion under conditions of enough oxygen content, incineration tail gas are introduced into after water scrubber, caustic wash tower, water scrubber, demister and activated carbon tower carry out purified treatment and enter air through blower fan.Method used herein is easy to operate, apparatus simple structure, the activity duration is short, heating-up temperature is low, security good, and the low-temperature carbonization of house refuse chlorine-containing component plastics and the innoxious burning of remaining house refuse are realized in same body of heater and same exhaust treatment system.

Description

A kind of processing method of house refuse low-temperature carbonization-innoxious burning
Technical field：
The invention belongs to technical field of domestic garbage treatment, and in particular to a kind of house refuse low-temperature carbonization-innoxious is burnt The processing method of burning.
Technical background：
As environmental problem is gradually taken seriously, energy-saving and environmental protection turn into the development topic of various countries, and it is garbage disposal to have begun to The chance of industry development is provided.Rubbish average annual growth in the whole world is 8.42%, and Chinese rubbish growth rate reach 10% with On.The whole world produces 4.9 hundred million tons of rubbish every year, and only China just produces nearly 1.5 hundred million tons of municipal refuses every year.Chinese city life rubbish Rubbish accumulation volume of cargo in storage is up to 7,000,000,000 tons.Under so huge rubbish pressure, it is reason to believe that, MSW processing industry can turn into not Carry out domestic star's industry.
The development of China's domestic rubbish disposal in recent years is very fast, ends 2010, and China's Output of Domestic Waste reaches 2.51 Hundred million tons, and the amount of clearing is 1.58 hundred million tons, equivalent to the 62.94% of yield, treating capacity is 1.23 hundred million tons, equivalent to yield 49%, the 77.85% of the amount of clearing, the nearly house refuse of half all in untreated or simply dealt state, also very Big room for promotion.
Burning disposal is that rubbish is placed in incinerator to be burnt, and discharges heat energy, and waste heat recovery can heat supply or generating. Discharged after gas cleaning, a small amount of residual residue discharge fills or make other purposes.Incineration treatment technology feature is that treating capacity is big, subtracts Capacitive is good, innoxious thorough, and has energy recovery to act on.Therefore, it is innoxious, minimizing to carry out burning disposal to house refuse With effective processing mode of resource.
Contain SO in the flue gas of consumer waste incineration discharge2, HCl, HF, Hg, Pb, Cd, NOx, dioxin and heavy metal etc. Various harmful and noxious substances, if using simple incinerating method, serious secondary pollution can be caused.Must be to burning side The aspects such as formula, burning optimization and gas cleaning carry out in-depth study, and using targetedly technological means, could realize opposite " cleaning " of rubbish living is burned.The standard that the Chinese government formulates dioxin emission is 1ngTEQ/m3And in 1 day June in 2003 Carry out in China, and World Developed Countries such as Japan, Switzerland Guo Jia dioxin emissions standard are 0.1ngTEQ/m3。 Therefore, in Refuse Incineration Process, it is necessary to take effective measures the generation and discharge of strict control bioxin.
It is generally acknowledged that, there is the organic compound combustion under chlorine and metallic element existence condition to produce bioxin.By analysis It was found that, substantial amounts of organic chloride (such as igelite, chlorobenzene) is contained in domestic waste and butter is (such as Sodium chloride, magnesium chloride etc.), the content of wherein organic matter reaches 20%~50%, and this promotes during burning city domestic garbage Generation bioxin amount is maximum, secondly for poisonous and harmful waste is burned.Bioxin the way of production can be summarized as two aspects:One side The face, (presence of such as PVC, chlorine, HCl), bioxin predecessors and catalysts (Cu, Fe), when fire box temperature is low of chlorine source In 850 DEG C, when the residence time is less than 2s, partial organic substances will be with mol-chloric or chlorine radicals reaction generation bioxin；It is another Aspect, during incineration firing and at the end of burning, because the change of burning condition causes regenerating for bioxin.Such as rubbish There is excessive uncombusted material when burning insufficient, in flue gas, when appropriate low transition metal, particularly copper is run into, 300 Under~500 DEG C of low temperature environment, high-temp combustion is decomposed bioxin and regenerate.
Substantial amounts of small incinerator is used to process residents in rural community and application of city life garbage, most of incinerator at this stage Due to not taking bioxin to control facility to cause dioxin emission exceeded, severe contamination environment.Therefore, it is badly in need of exploitation a kind of raw Rubbish processing to be harmless method living, energy low-cost high-efficiency solves the technical barrier of bioxin pollution.
The content of the invention：
The technical problems to be solved by the invention are to provide a kind for the treatment of side of house refuse low-temperature carbonization-innoxious burning Method, the method substep separates the chlorine component in plastic containing chlorine, and dioxin emissions in low cost control Refuse Incineration Process are realized Consumer waste innocent burning disposal.
In order to solve the above-mentioned technical problem, the place of a kind of house refuse low-temperature carbonization-innoxious burning that the present invention is provided Reason method, is realized using following step：
(1) house refuse is carried out into manual sorting first, removes the things such as stone cleaning, brick, and be dehydrated with pressurizing unit Treatment；
(2) by pretreated house refuse addition pyrolysis oven, exhaust treatment system is connected, starting blower fan makes pyrolysis oven Negative pressure state, is heated by external heating device to pyrolysis oven, and the heat time is 90-120min, by house refuse Plastic containing chlorine carries out the mixed gas such as carbonization degraded, vapor, the pyrolysis gas that carbonization degraded is produced and is introduced into water scrubber, alkali cleaning Tower, water scrubber, demister and activated carbon tower enter air after carrying out purified treatment through blower fan；
(3) stop heating, the air intake vent of pyrolysis oven furnace bottom is opened, in air intake vent to the house refuse point after low-temperature carbonization Fire, house refuse abundant spontaneous combustion under conditions of enough oxygen content, incineration tail gas are introduced into water scrubber, caustic wash tower, water scrubber, remove Day with fog and activated carbon tower enter air after carrying out purified treatment through blower fan.
A kind of processing method of house refuse low-temperature carbonization-innoxious burning of the present invention, pyrolysis temperature in the step (2) Control is at 210-250 DEG C.
A kind of device of the processing method of house refuse low-temperature carbonization-innoxious burning of the present invention, including body of heater, washing Tower, caustic wash tower, water scrubber, demister, activated carbon tower etc., described upper of furnace body are provided with furnace roof, bottom there is provided furnace bottom, outward Portion is provided with heater, and described furnace bottom is provided with air intake vent, and described furnace roof is provided with feeding mouth and exhanst gas outlet, described Exhanst gas outlet water scrubber, caustic wash tower, water scrubber, demister, activated carbon tower and blower fan are sequentially connected by pipeline.
Using a kind of processing method of house refuse low-temperature carbonization-innoxious burning of above-mentioned technical proposal, its work is former Reason is summarized as follows：
House refuse is carried out low-temperature carbonization by the present invention first, enters the plastic containing chlorine in house refuse under negative pressure state Row thermal decomposition, the chlorine in plastic containing chlorine obtains thermal release from plastics, condensation separation treatment is carried out into exhaust treatment system；Through After crossing low-temperature carbonization, house refuse carries out innoxious burning treatment under excess oxygen, due to separating chlorine component, life rubbish in advance The calorific value of rubbish is greatly improved, and moisture greatly reduces, and waste incineration is more abundant, and the temperature of incineration flue gas will be greatly improved, in stove The probability produced more than 850 DEG C of , bioxin will be reduced to a great extent ignition temperature, so as to realize at consumer waste innocent The overall process of reason.
In terms of pyrolysis gas and incineration gases treatment, pyrolysis gas contain vapor, chlorine-containing gas, organic molecule thing Matter, by condensation separation after water-cooling tower, then is emptied by active carbon purifying；Chlorine-containing component is low in incineration gases, there is a small amount of acid Property gas and dust, dirt+level Four demisting+Pyatyi activated carbon is removed by+two grades of alkali cleaning depicklings of one-stage water wash dedusting+tertiary effluent and is inhaled It is attached, realize that flue gas cleaning is discharged.
The beneficial effects of the invention are as follows：
For prior art, method used herein is easy to operate, apparatus simple structure, the activity duration Short, heating-up temperature is low, security is good, and house refuse chlorine-containing component plastics are realized in same body of heater and same exhaust treatment system Low-temperature carbonization and remaining house refuse innoxious burning.
For prior art, the low temperature synthesis of bioxin is avoided that, the pyrolysis+burning of two-part dexterously divides The chlorine in plastics, improves refuse thermal value, and moisture is separated in advance, is that burning process reaches a high temperature and creates good conditions.
Brief description of the drawings：
Fig. 1 is a kind of schematic device of domestic garbage was harmlessly treated method；
In Fig. 1,1 is feeding mouth, 2 is body of heater, 3 is heater, 4 is furnace bottom, 5 is air intake vent, 6 is exhanst gas outlet, 7 are Furnace roof, 8 be water scrubber, 9 be caustic wash tower, 10 be water scrubber, 11 be demister, 12 be activated carbon tower, 13 be blower fan.
Specific embodiment：
Embodiment 1
100kg house refuses are taken, is processed through manual sorting, be dehydrated using compression set, obtain the life that moisture content is 50% Rubbish living；Then passed through in feeding mouth (1) addition pyrolysis furnace body (2), closed air intake vent (5), started blower fan (13), adopted Pyrolysis furnace body (2) is heated by heater (3) with electrically heated mode, heating and temperature control is heated at 250 DEG C Time is 90min, and the plastic containing chlorine in house refuse is carried out into carbonization degraded, vapor, pyrolysis gas that carbonization degraded is produced etc. Mixed gas are introduced into water scrubber (8), caustic wash tower (9), water scrubber (10), demister (11) and activated carbon tower (12) and are purified After treatment air is entered through blower fan (13)；Stop heating, open the air intake vent (5) of pyrolysis oven furnace bottom (4), it is right in air intake vent (5) House refuse igniting after low-temperature carbonization, house refuse abundant spontaneous combustion under conditions of enough oxygen content, incineration tail gas are introduced into Water scrubber (8), caustic wash tower (9), water scrubber (10), demister (11) and activated carbon tower (12) are carried out after purified treatment through blower fan (13) air is entered.
Embodiment 2
100kg house refuses are taken, is processed through manual sorting, be dehydrated using compression set, obtain the life that moisture content is 50% Rubbish living；Then passed through in feeding mouth (1) addition pyrolysis furnace body (2), closed air intake vent (5), started blower fan (13), adopted Pyrolysis furnace body (2) is heated by heater (3) with electrically heated mode, heating and temperature control is heated at 210 DEG C Time is 120min, and the plastic containing chlorine in house refuse is carried out into carbonization degraded, vapor, pyrolysis gas that carbonization degraded is produced etc. Mixed gas are introduced into water scrubber (8), caustic wash tower (9), water scrubber (10), demister (11) and activated carbon tower (12) and are purified After treatment air is entered through blower fan (13)；Stop heating, open the air intake vent (5) of pyrolysis oven furnace bottom (4), it is right in air intake vent (5) House refuse igniting after low-temperature carbonization, house refuse abundant spontaneous combustion under conditions of enough oxygen content, incineration tail gas are introduced into Water scrubber (8), caustic wash tower (9), water scrubber (10), demister (11) and activated carbon tower (12) are carried out after purified treatment through blower fan (13) air is entered.

Claims (2)

1. a kind of processing method of house refuse low-temperature carbonization-innoxious burning, it is characterised in that：Comprise the following steps：
(1) house refuse is carried out into manual sorting first, removes the things such as stone cleaning, brick, and dewater treatment is carried out with pressurizing unit；
(2) by pretreated house refuse addition pyrolysis oven, exhaust treatment system is connected, starting blower fan makes pyrolysis oven negative pressure State, is heated by external heating device to pyrolysis oven, and the heat time is 90-120min, will be chloride in house refuse Plastics carry out the mixed gas such as carbonization degraded, vapor, the pyrolysis gas that carbonization degraded is produced and are introduced into water scrubber, caustic wash tower, water After washing tower, demister and activated carbon tower and carrying out purified treatment air is entered through blower fan；
(3) stop heating, open the air intake vent of pyrolysis oven furnace bottom, it is raw in air intake vent to the house refuse igniting after low-temperature carbonization Rubbish abundant spontaneous combustion under conditions of enough oxygen content living, incineration tail gas are introduced into water scrubber, caustic wash tower, water scrubber, demister After carrying out purified treatment with activated carbon tower air is entered through blower fan.
2. a kind of processing method of house refuse low-temperature carbonization-innoxious burning according to claim 1, its feature exists In：Pyrolysis temperature control is at 210-250 DEG C in the step (2).
CN201710003365.3A 2017-01-04 2017-01-04 A kind of processing method of house refuse low-temperature carbonization innoxious burning Pending CN106871126A (en)

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CN201710003365.3A CN106871126A (en) 2017-01-04 2017-01-04 A kind of processing method of house refuse low-temperature carbonization innoxious burning

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Application Number Priority Date Filing Date Title
CN201710003365.3A CN106871126A (en) 2017-01-04 2017-01-04 A kind of processing method of house refuse low-temperature carbonization innoxious burning

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107626723A (en) * 2017-10-31 2018-01-26 中润绿城（北京）环保科技有限公司 High-moisture percentage house refuse as harmless resource utilizes device and its handling process
CN109609145A (en) * 2018-11-21 2019-04-12 四川省禾吉多生物科技有限公司 A kind of house refuse fast and harmless processing system and method
CN112439288A (en) * 2020-11-03 2021-03-05 朱旭燕 Solid waste burns flue gas treatment equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618954A (en) * 2009-07-20 2010-01-06 中信重工机械股份有限公司 Process system for processing municipal domestic waste by cement rotary kiln
CN202188510U (en) * 2011-07-03 2012-04-11 湖南惠明环保能源有限公司 Garbage harmless processing system
CN103759266A (en) * 2014-01-17 2014-04-30 陈辉华 Household garbage pyrolysis treatment method
CN205551064U (en) * 2016-04-12 2016-09-07 王冬 Domestic waste low temperature pyrolysis system
CN106196083A (en) * 2015-01-06 2016-12-07 苏州多固工程设计有限公司 A kind of medical waste high-efficient treatment device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618954A (en) * 2009-07-20 2010-01-06 中信重工机械股份有限公司 Process system for processing municipal domestic waste by cement rotary kiln
CN202188510U (en) * 2011-07-03 2012-04-11 湖南惠明环保能源有限公司 Garbage harmless processing system
CN103759266A (en) * 2014-01-17 2014-04-30 陈辉华 Household garbage pyrolysis treatment method
CN106196083A (en) * 2015-01-06 2016-12-07 苏州多固工程设计有限公司 A kind of medical waste high-efficient treatment device
CN205551064U (en) * 2016-04-12 2016-09-07 王冬 Domestic waste low temperature pyrolysis system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107626723A (en) * 2017-10-31 2018-01-26 中润绿城（北京）环保科技有限公司 High-moisture percentage house refuse as harmless resource utilizes device and its handling process
CN109609145A (en) * 2018-11-21 2019-04-12 四川省禾吉多生物科技有限公司 A kind of house refuse fast and harmless processing system and method
CN112439288A (en) * 2020-11-03 2021-03-05 朱旭燕 Solid waste burns flue gas treatment equipment

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