CN105602585A

CN105602585A - Method for gas production from conversion of municipal household garbage treated through low-temperature destructive distillation in tubular furnace

Info

Publication number: CN105602585A
Application number: CN201510969457.8A
Authority: CN
Inventors: 李玉辉; 李志国
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2016-05-25

Abstract

The invention relates to a method for converting municipal household garbage into combustible gas by adopting a special tubular furnace for gas production from household garbage conversion. According to the special tubular furnace for gas production from household garbage conversion, the tubular furnace is specially designed, is different from any garbage incinerator in type, does not need rotation, is not in a fixed-bed manner, and has a quite outstanding energy-saving effect; a pretreatment system adopts an underground negative-pressure process, therefore, the environment is clean without pollution; the household garbage is subjected to processes including low-temperature destructive-distillation, splitting and reforming and then subjected to slag fusion and gas purification respectively, accordingly, the combustible gas and corresponding goods are obtained. The technology controls the formation of secondary pollution from the source instead of degrading and reducing emission passively after production; the technology enables the whole garbage treatment process to be a sealed self-circulation system, and water, heat and the like produced in the process are all recovered, therefore, no water, gas, or contaminant is discharged; in combination with the slag fusion technology and the gas purification technology, zero dioxin emission is achieved, heavy metal is recovered, and no fuel gas is emitted, so that the treated household garbage all becomes resources and gets harmless; the technology of the method is a novel technology which is efficient, energy-saving, low in cost and pollution-free.

Description

The method of application of city life garbage conversion gas processed is processed in a kind of tube furnace low temperature distillation

Technical field

The invention belongs to Urban Domestic Waste Comprehensive Treatment and the utilization in energy-conserving and environment-protective field, adopt special house refuse to transform air-tube type processedStove, is converted into application of city life garbage the method for combustible gas, realizes bioxin zero-emission, and heavy metal reclaims, smokeless, make byThe whole resources of house refuse, innoxious of processing are energy-efficient, low cost, free of contamination technology.

Background technology

Change the accelerated development along with the industrialization of the country and Development of China's Urbanization, and the rising increasingly of material consumption, domestic waste is anxiousRapid increasing, different region house refuses year generation with annual 3～8% speed increase. A large amount of house refuses affect cityThe environment in town and people's living environment; Pollute landing ground environment and then polluting the air quality that the mankind depend on for existence.

The most frequently used technological means of the current domestic rubbish disposal amount of China is landfill, sanitary landfills and air storage, and its amount accounts for life rubbishRubbish produces 80% left and right of total amount. Fact proved, landfill method has taken a large amount of land resource, has polluted underground water and around simultaneouslyArable land, long-term accumulation, rubbish forms anaerobic environment in waste pit, landfill accumulation can be distributed multiple pernicious gas, wherein methaneSpill in air, its destructiveness to atmospheric ozone layer is 25 times of carbon dioxide, more has other as H₂S、SO₂、NH₃EvenThe toxic gases such as bioxin, form secondary pollution. What garbage loading embeading can not thoroughly solve house refuse subtracts appearanceization, minimizing and harmlessChange.

The external country of burning method that adopts is because Technological Economy strength is stronger, and the burning and the tail gas treatment process that rely on its advanced person are its coreHeart technology; Equipment is taking grate-type stove as main; Domestic garbage incinerating system can be divided into fixed-bed type, fluidized bed type, grate-type,Rotary kiln formula, its core technology is high temperature incineration, tail gas clean-up qualified discharge; Limit by apparatus and process technical merit, realize up to standardThe incineration plant of discharge is fewer. No matter directly burning or pyrolytic incineration, is all high temperature garbage burning, and its technological process is mainly burntBurning and discharging gas purifies up to standard; It is sure that burning method produces bioxin, can only reduce by tail gas clean-up means the discharge of bioxinAmount; The slag of burning method is landfill substantially, appoints and so causes the heavy metal pollution of soil and diffusing of slag Zhong bioxin; Burning method is dryDrying process is deviate from water need to process qualified discharge.

The development of building along with town planning and the increase of population, garbage-surrounded city phenomenon is commonplace, even in the past away from cityRefuse landfill has been positioned at the central area in city, the development in serious obstruction city, and affect the living environment of surrounding resident.Domestic waste is pollution sources, contain again can regeneration resource and the energy, select rational processing mode and process skillArt has been the task of top priority of City's Construction And Development, environmental improvement. House refuse transforms gas mode processed and technology can realize more up hill and daleGarbage disposal subtracts appearanceization, minimizing and innoxious target, and have floor space little, stable, there is no a secondary pollutionAdvantage.

The raising for the treatment of furnace for domestic garbage tool manufacturing industry technology, can utilize home equipment to realize " application of city life garbage transforms gas processed "Project implementation, the input of minimizing fund, production safety operation is secure, facilitates operational management etc., improves implementing of this projectProperty and operability. Comprehensive utilization gas purification and isolation technics, ensure that gasification burning product meets codes and standards requirement. Based onThe present situation that upper house refuse produces, exists and national conditions and the technical development real standard in the industry of China, " application of city life garbage transformsGas processed " construction of project has been the task of top priority of economic development.

Summary of the invention

The present invention is directed to the problem of above-mentioned existence, provide a kind of and utilized special house refuse to transform producer, in conjunction with gas purificationBy whole application of city life garbage resources, innoxious, realize bioxin zero-emission with fusion technology, heavy metal reclaims, smokeless rowPut energy-efficient, low cost, free of contamination technology.

It is a kind of novel technology of garbage disposal that application of city life garbage transforms gas processed, has efficient energy utilization rate and good environmental protectionFeature, uses sealing circulation technology can accomplish not have secondary pollution. And gasification and fusion technology combine can realize strictControl and pollute, subtract significantly capacitive and efficient resource regeneration. Therefore this technology is also considered in Treatment Way of Municipal Refuse in CityThe potential substitute technology of tool. It is resource and the energy that this technology realizes garbage conversion effectively, and there is no secondary pollution, ensuresThe technical advance of project.

The present invention is achieved by the following technical solutions:

(1) house refuse pretreatment system: the feature of house refuse pretreatment system is that refuse composition complexity, water content are high, calorific valueLow, directly entering reburner can increase energy consumption. Utilize the high-temperature gas mixture body and the air that in garbage conversion process, produce to carry out heat friendshipChange, the high temperature air obtaining dries the rubbish of water content 40～50% to water content 10% left and right. Both facilitated the operation of subsequent handling,Also the convenient fluctuation quantity that adapts to daily output rubbish changes, and superfluous house refuse is convenient to storage after drying. Drying plant adopts swingingDryer. Rubbish is dried the boil-off gas moisture vapor and the refuse odor that produce. Foul smell is mainly the corrupt NH of generation of rubbish₃、H₂S etc.This gaseous mixture is through moisture trap, and distilled water is cooling separates out, and through air water heat exchange, enters drum, produces high-temperature vapor,For transforming the reforming process of gas processed. This fresh water (FW) steam consumption mates substantially with the water yield that garbage dewatering produces, so do not arrangeWater generates. Foul smell directly enters the hot sub-sieve of reburner. Pretreatment system adopts underground negative pressure technique, ensures that production environment does not have dirtDye, realize cleaner production.

(2) garbage conversion gas system processed: domestic garbage treating system adopts after low temperature distillation, cracking, reformation, then passes through respectively meltingAnd purification process. Moisture 15% house refuse is carried out low temperature distillation in the atmosphere of anoxic after drying, and low temperature distillation makes life rubbishIn rubbish, separating out of volatile matter needs the long period; According to the elementary analysis report of rubbish, it is divided into 50.6% containing volatilization, and suitable prolongsThe long destructive distillation time, this drawback can transfer advantage to; Low temperature distillation output object is: flue gas, tar, slag, flue gas enters to transform and splitsSeparate, tar is attached on the residue of slag substantially, enters melting furnace, tar and residue together with slag and the contained heavy metal of slagThing is jointly for the high temperature (1400 DEG C) of melting furnace provides heat energy; The generation temperature of bioxin is avoided in low temperature distillation, in tar, containsThe predecessor that bioxin generates, as benzene, phenol, biphenyl etc., in the destructive distillation environment of anoxic, can not react Sheng with HCl and Cheng Er EvilEnglish, after low temperature distillation, predecessor enters melting furnace with slag, is thoroughly cracked into H₂O and CO₂Deng inorganic matter, HCl enters with flue gasEnter to transform after cracking and reformation, remove in clean-up stage; Heavy metal is effectively reclaimed.

The core of garbage conversion gas system processed is that house refuse transforms producer: profile and inner chamber are tubular type; Meet charging and slag tapAutomation control, and rubbish stops more than 2 hours in stove, and realize serialization and produce; Carbonization gas enters cracking from dry distillation areaDistrict is less than 0.2 second by practice; The agitating mode that transforms cracking and reforming reaction section is gas cyclone formula; This type of furnace is different from appointsWhat incinerator, its chamber structure has been concentrated the advantage of all type of furnaces, has but abandoned the concept of " waste incineration ", enforcement beThe new ideas of " garbage conversion gas processed "; In burner hearth dry distillation area, collection chamber is set, carries dry with the circular channel of inner chamber 300～350mmHeat up in a steamer gas, make gas form environment under low pressure, passage is crossed the changeover portion of 350mm, directly sends into the zoneofoxidation of 700 DEG C, sends intoThe concentrated zone of transformation of 1050 DEG C. 400 DEG C from the dry distillation area times that enter 700 DEG C of carbonization gas are less than 0.2 second, and moment is skipped Sheng Cheng bis-EvilThe temperature range (400～700 DEG C) of English, Shi bioxin has little time to generate and enters zone of transformation cracking and decomposition, cuts off bioxinGeneration approach; Select the passage of inner chamber 300～350mm to carry carbonization gas, be equivalent to carry with the pipeline of 300～350mm; CombineClose the factor of its delivery temperature, its flow velocity is necessarily faster than setting value. In the time of speed 3.5m/s, 0.2 second time was passed through 0.7 meter, IChangeover portion be 0.35 meter, within 0.1 second, pass through; In raw material, add alkaline matter CaO or Ca (OH)₂, make Cl₂Or HCl with itReaction generates CaCl₂, stay in slag, Shi bioxin generate predecessor (as polyvinyl chloride, chlorobenzene, trichlorophenol, 2,4,6,-T etc.) withCl₂Do not have with HCL or reduce by Sheng such as thermal chemical reaction, free radical restructuring, thermal oxidative reactions to Cheng bioxin. These bioxin withCarbonization gas enters 1050 DEG C of zone of transformation, under high temperature, realizes cracking. The chlorine out ， bioxin structural deterioration that dissociates. The temperature of reformer section800 DEG C still make it in released state. Adopt 750 DEG C of high-temperature dust removals, make Cl₂Take away with gas with HCl, all the other compositions are stayedIn flue dust; Flue dust, through melting process, has thoroughly destroyed the structure of its predecessor, makes its cracking, reintegrates as straight chain chemical combinationThing, returns and transforms producer zone of transformation, further participates in solid/liquid/gas reactions processed. Gas from hot precipitator out hurried cooling be120 DEG C, then through the absorption and sorption of overload fat active carbon, even if there is remaining bioxin, dissolved herein gas by fat absorptionIn no longer include bioxin, carry fat active carbon periodic replacement, send into melting furnace and burn, the high temperature of 1400 DEG C, is enough to make organic matter completeBe converted into inorganic matter H₂O、CO₂Deng. In slag, bioxin, from house refuse self, though amount is few, also will seal processing. StoveSlag is sealing transhipment from reburner to melting furnace, and Zhong 1400 DEG C of high temperature of melting furnace, bioxin thoroughly decomposes, and gas returns to reburner.After melt process, heavy metal reclaims, and clean slag is transported outward as construction material. Slag of the present invention and flying dust are through melting, effectivelyReclaimed heavy metal, gather in the crops construction material simultaneously, a small amount of bioxin that high-temperature fusion exists rubbish Central Plains effectively decomposes, thoroughlyRealize zero-emission, and the carbon of 24% left and right in slag is effectively utilized. After moisture deodorization of the present invention, utilize waste heat recovery, be heatedBecome 210 DEG C of steam, for reforming process, there is no water discharge.

Transforming producer type is intelligent kiln of new generation, and burning kiln with tradition has fundamental difference. Application of city life garbage transforms gas processedTechnical matters flow process technical essential: house refuse all digests; Go out the land use of founding the factory, no longer land occupation resource; SuitableDestructive distillation parameter, control HCl generation Ji bioxin generate; Reasonably technological process, energy, material that " process " producedUtilize rationally and effectively, realize energy-conservation, zero-emission. Its design and produce according to being technological process and process design parameter, life rubbishThe technology that rubbish transforms gas, bioxin processed zero-emission completed in this stage.

Gas purge system is used gas requirement according to different, has three kinds of different purification means: 1. in domestic garbage gasification technique, and COStay in gas product as fuel gas, its purification process mainly removes CO₂, HCl, sulphur and de-dirt; 2. for house refuse is turnedChange the mist of gas processed, peel off through CO the standard that reaches natural gas used for automobile, mist need to through de-dirt, take off CO,CO₂, de-O₂, the processes such as desulfurization; After purification, obtain the automobile-used living beings natural gas taking methane as main component; 3. the third gas is cleanChange means and the second are basic identical. In order to improve the methane conversion of garbage conversion gas processed, by the CO gas methane producing in gas processedChange, improve the conversion ratio of garbage conversion gas processed, make final products meet the standard of living beings natural gas.

Low temperature distillation disposal of refuse, carbonization gas can very effectively have been realized smokeless through gas purification, gas separation; ThisThe core of the processing of invention rubbish is that house refuse transforms producer, and subsequent technique no longer includes rubbish and exists; Through transforming cracking, weightWhole gas is not flue gas but combustion gas; The present invention designs the instantaneous temperature range that bioxin generates of skipping, and cuts off Er Evil from sourceThe working condition of English, Shi bioxin can not generate.

Technical flow design of the present invention is closed self-circulation system; Water, heat, gas that garbage processing procedure is produced are all filledThe recycling dividing; Realize energy-conservation, without discharge, reduce operating cost, reach the object of consumer waste innocent, resource; RightOverall situation plays house refuse and subtracts the effect of holding decrement; And for handled rubbish, be all converted into useful thing, itsEffect is just not only to subtract and has been held decrement, but whole resource.

Brief description of the drawings

Fig. 1 is life garbage conversion producer process schematic diagram; Fig. 2 is life garbage conversion gas-made technology flow chart.

Embodiment

The embodiment of the present invention:

1. the rubbish of garbage transfer station enters garbage pool through sealed refuse transport vehicle, after the broken sub-sieve that circulates, dries, and utilizes rubbishThe high-temperature gas mixture body and the air that in rubbish conversion process, produce carry out heat exchange, and the high temperature air obtaining removes water content 40～50%Rubbish after iron is dried to water content 10% left and right, and rubbish enters garbage conversion gasification process by conveyer after drying. Oven dry is establishedThe standby rotary dryer that adopts, superfluous house refuse is convenient to storage after drying. Pretreatment adopts underground negative pressure technique, ensures to produceEnvironment does not pollute, realizes cleaner production. Rubbish is dried the boil-off gas moisture vapor and the refuse odor that produce, and this gaseous mixture is through gasSeparator, distilled water is cooling separates out, and through air water heat exchange, enters drum, produces high-temperature vapor, for transforming gas processedReforming process. This fresh water (FW) steam consumption mates substantially with the water yield that garbage dewatering produces, so do not have draining to produce. Foul smell is straightTap into into the hot sub-sieve of reburner.

2. house refuse is after drying carried out low temperature distillation in the atmosphere of anoxic, and low temperature distillation makes analysing of volatile matter in house refuseGo out to need the long period, temperature is about 350 DEG C～400 DEG C; Low temperature distillation output object is: flue gas, tar, slag, flue gas entersTransform cracking, tar is attached on the residue of slag substantially, enters melting furnace, tar together with slag and the contained heavy metal of slagAnd residue is jointly for the high temperature (1400 DEG C) of melting furnace provides heat energy; The generation temperature of bioxin, tar are avoided in low temperature distillationIn contain bioxin generate predecessor, as benzene, phenol, biphenyl etc., in the destructive distillation environment of anoxic, can not react with HCl give birth toCheng bioxin, after low temperature distillation, predecessor enters melting furnace with slag, is thoroughly cracked into H₂O and CO₂Deng inorganic matter, HCl withFlue gas enters and transforms after cracking and reformation, removes in clean-up stage; Heavy metal is effectively reclaimed. In burner hearth dry distillation area, gas collection is setChamber, carries carbonization gas with the circular channel of inner chamber 300～350mm, makes gas form environment under low pressure, and passage is crossed the transition of 350mmSection, directly sends into the zoneofoxidation of 700 DEG C, sends into the concentrated zone of transformation of 1050 DEG C. 400 DEG C from dry distillation area of carbonization gas enter 700 DEG CTime is less than 0.2 second, and moment is skipped the temperature range (400～700 DEG C) of Sheng Cheng bioxin, and Shi bioxin has little time to generate to enterEnter zone of transformation cracking and decomposition, cut off the generation approach of bioxin; Select the passage of inner chamber 300～350mm to carry carbonization gas, phaseWhen the pipeline in 300～350mm is carried; The factor of comprehensive its delivery temperature, its flow velocity is necessarily faster than setting value. Work as speedWhen 3.5m/s, 0.2 second time, our changeover portion was 0.35 meter, within 0.1 second, passes through by 0.7 meter; In raw material, add alkalescenceSubstance C aO or Ca (OH)₂, make Cl₂Or HCl reacts with it generation CaCl₂, stay in slag the predecessor that Shi bioxin generates(as polyvinyl chloride, chlorobenzene, trichlorophenol, 2,4,6,-T etc.) and Cl₂Do not have with HCL or reduce by thermal chemical reaction, free basic weightThe Sheng such as group, thermal oxidative reaction Cheng bioxin. These bioxin enter 1050 DEG C of zone of transformation with carbonization gas, under high temperature, realize cracking. ChlorineThe gas out ， bioxin structural deterioration that dissociates. 800 DEG C of the temperature of reformer section still make it in released state. Adopt 750 DEG C of high temperature to removeDirt, makes Cl₂Take away with gas with HCl, all the other compositions are stayed in flue dust; Flue dust, through melting process, has thoroughly destroyed its forerunnerThe structure of thing, makes its cracking, reintegrates as straight chain compound, returns and transforms producer zone of transformation, further participates in gas processed anti-Should. Gas from hot precipitator out hurried cooling be 120 DEG C, then through the absorption and sorption of overload fat active carbon, even if having residualDeposit bioxin, dissolved by fat absorption herein, in gas, no longer include bioxin, carry the periodic replacement of fat active carbon, send into meltingStove is burnt, and the high temperature of 1400 DEG C is enough to make organic matter to be converted into inorganic matter H completely₂O、CO₂Deng. Bioxin in slag comes spontaneousRubbish self alive, though amount is few, also will seal processing. Slag is transported from reburner to melting furnace for sealing, 1400 DEG C of melting furnacesHigh temperature Zhong bioxin thoroughly decomposes, and gas returns to reburner. After melt process, heavy metal reclaims, and clean slag is as construction materialOutward transport.

3. gas purge system is used gas requirement according to different, peels off through CO the standard that reaches natural gas used for automobile, and mist needsThrough de-dirt, de-CO, CO₂, de-O₂, the processes such as desulfurization; After purification, obtain automobile-used living beings taking methane as main component naturalGas; In order to improve the methane conversion of garbage conversion gas processed, by the CO gas methanation producing in gas processed, raising garbage conversion gas processedConversion ratio, makes final products meet the standard of living beings natural gas.

4. material balance is calculated

1. the elementary analysis of house refuse: the elementary analysis of house refuse taking the detection data of environmental quality inspection center of Tsing-Hua University asFoundation: full sulphur 1.08 × 103 (mg/kg); Ash content 34.8 (%); Volatile matter 50.6 (%); Fixed carbon 4.1 (%); WaterDivide 10.5 (%)

2. garbage conversion gas material balance processed:

5. the energy balance that house refuse transforms in gas-made technology is calculated

6. combustion gas that pilot scale is produced is as follows through environmental quality inspection center of Tsing-Hua University testing result:

Carbon dioxide 15.9%; Carbon monoxide 31.1%; Total hydrocarbon 7.39%; Methane 30.3%; Oxygen 3.20%; Nitrogen 3.86%;Hydrogen 9.11%; Reformed gas calorific value 23.24KJ/Nm³(5534 kilocalories/Nm³); Slag amount: dry 32.2% of quantity of refuse; SlagCarbon containing: 23.9% of slag amount; Gas yield: 1m³/ 1.5kg is dried rubbish.

7. to transform gas producing technology pilot scale data comparatively desirable for application of city life garbage, bioxin composition do not detected, low temperature distillation technology withThe comprehensive utilization of fusion technology can realize domestic rubbish disposal; Low temperature distillation gas is flammable with the inspection new forms of energy of reforming through transforming crackingGas, can be directly used in industrial production gas through de-dirt, desulfurization; The air using in pilot scale is as combustion adjuvant, so flammableNitrogenous in gas component, in production, use oxygen instead; Temperature, the pressure of adjusting steam in reforming, can reduce CO, CO₂ContainAmount, increase CH₄Content.

Claims

Innovative design of the present invention house refuse transform producer, this type of furnace is different from any incinerator, feature is:

(1) according to the general principle of retorting technique and gas dynamics, destructive distillation reburner is designed to not need rotation and on-fixed bed formula, only this item, saves the electricity charge approximately 2,000,000 (0.7 yuan/degree meter) every year, and energy-saving effect is very obvious.

(2) according to gas transmission and distribution know-why, a functional section in design stove, makes carbonization gas enter cracking zone from low-temperature zone with the speed of 0.1 second, avoids bioxin and generates temperature, makes predecessor remaining in carbonization gas not possess with HCl the formation condition of reaction.

(3) profile and inner chamber are tubular type;

(4) the automation control that meets charging and slag tap, and rubbish stops more than 2 hours in stove, and realize serialization and produce;

(5) agitating mode of conversion cracking and reforming reaction section is gas cyclone formula.
2. application of city life garbage transforms gas project processed:

(1) life refuse disposal system alive:

Utilize the high-temperature gas mixture body and the air that in garbage conversion process, produce to carry out heat exchange, the high temperature air obtaining dries the rubbish of water content 40～50% to water content 10% left and right. Rubbish is dried the boil-off gas moisture vapor and the refuse odor that produce. Foul smell is mainly the corrupt NH of generation of rubbish₃、H₂S etc. This gaseous mixture is through moisture trap, and distilled water is cooling separates out, and through air water heat exchange, enters drum, produces high-temperature vapor, for transforming the reforming process of gas processed. This fresh water (FW) steam consumption mates substantially with the water yield that garbage dewatering produces, so do not have draining to produce. Foul smell directly enters the hot sub-sieve of reburner.

House refuse, in garbage conversion producer, is divided into garbage truck, retort section, zone of transformation, several stages of reformation gas-producing area. Rubbish adopts low temperature distillation technology (350 DEG C～400 DEG C), though production tolerance is less in low temperature distillation process, garbage disposal is main purpose; Through destructive distillation, rubbish no longer exists, and becomes carbonization gas and slag taking hydrogen as main component; Receive gas transmission and distribution technology, design carbonization gas is crossed 400 DEG C～700 DEG C sections with the speed of 0.1 second, avoids bioxin and generates temperature; Carbonization gas enters 1150 DEG C very soon, transforms cracking, at this under sufficient oxygen effect, macromolecular cleavage is little molecule, and heterocycle a small amount of in carbonization gas is cracked into straight chain, and then is cracked into little molecule, this section is designed to gas residence time and exceedes 20 seconds, makes to transform cracking reaction abundant; Reform at back segment through the gas that transforms cracking, final mist contains with CH₄, CO is main fuel gas; Utilize gas purification, isolation technics, obtain being applicable to the fuel gas of different purposes; Utilize fusion technology to process slag and flue dust, under 1400 DEG C of high temperature, realize organic matter and be converted into inorganic matter and heavy metal recovery; Utilize heat balance principle, in whole garbage conversion gas-making process, required heat energy is provided by house refuse self and derivative heat energy thereof, without outer confession.

(2) comprehensive utilization process technological system

1. transform in gas-making process in house refuse, cutting off the formation approach of bioxin and taking effective bioxin purification techniques is one of key technology of this technique. This project focuses on technology in the formation approach that cuts off bioxin, is namely placed on source; Take effective bioxin purification techniques as supplementary means, to guarantee to realize bioxin zero-emission. Concrete measure: select advanced intelligent house refuse to transform producer, this type of furnace is different from any incinerator, its chamber structure has been concentrated the advantage of all type of furnaces, has but abandoned the concept of " waste incineration ", enforcement be the new ideas of " garbage conversion gas processed "; In burner hearth dry distillation area, collection chamber is set, carries carbonization gas with the circular channel of inner chamber 300～350mm, make gas form environment under low pressure, passage is crossed the changeover portion of 350mm, directly sends into the zoneofoxidation of 700 DEG C, sends into the concentrated zone of transformation of 1050 DEG C. 400 DEG C from the dry distillation area times that enter 700 DEG C of carbonization gas are less than 0.2 second, and moment is skipped the temperature range (400～700 DEG C) of Sheng Cheng bioxin, and Shi bioxin has little time to generate and enters zone of transformation cracking and decomposition, cuts off the generation approach of bioxin. Reduce Cl in house refuse₂Generation and release with HCl gas. In raw material, add alkaline matter calcium oxide or calcium hydroxide, make Cl₂Or HCl reacts with it generation CaCl₂, stay in slag predecessor (as polyvinyl chloride, chlorobenzene, trichlorophenol, 2,4,6,-T etc.) and Cl that Shi bioxin generates₂Do not have with HCL or reduce by Sheng such as thermal chemical reaction, free radical restructuring, thermal oxidative reactions to Cheng bioxin.

2. house refuse itself contains bioxin. Although cut off the approach of Sheng Cheng bioxin in garbage conversion gas-making process, although rubbish itself has bioxin on a small quantity, also must remove, to guarantee bioxin zero-emission. These bioxin enter 1050 DEG C of zone of transformation with carbonization gas, under high temperature, realize cracking. The chlorine out ， bioxin structural deterioration that dissociates. 800 DEG C of the temperature of reformer section still make it in released state. Adopt 750 DEG C of high-temperature dust removals, make Cl₂Take away with gas with HCl, all the other compositions are stayed in flue dust; Flue dust, through melting process, has thoroughly destroyed the structure of its predecessor, makes its cracking, reintegrates as straight chain compound, returns and transforms producer zone of transformation, further participates in solid/liquid/gas reactions processed. Gas from hot precipitator out hurried cooling be 120 DEG C, again through the absorption and sorption of overload fat active carbon, even if there is remaining bioxin, dissolved by fat absorption herein, in gas, no longer include bioxin, carry the periodic replacement of fat active carbon, send into melting furnace and burn, the high temperature of 1400 DEG C, is enough to make organic matter to be converted into inorganic matter H completely₂O、CO₂Deng. In slag, bioxin, from house refuse self, though amount is few, also will seal processing. Slag is sealing transhipment from reburner to melting furnace, and Zhong 1400 DEG C of high temperature of melting furnace, bioxin thoroughly decomposes, and gas returns to reburner. After melt process, heavy metal reclaims, and clean slag is transported outward as construction material.

3. technology comprises: pretreatment system adopts underground negative pressure technique, and cleaner production is not polluted, realized to guarantee production environment; Garbage conversion gas producing technology, the secondary pollution of having avoided waste incineration to cause; Garbage conversion renewable new energy source technology, makes domestic garbage resource; Bioxin zero-discharge technology, cuts off to transform in gas-making process and gives birth to into the approach of bioxin, and effectively process original bioxin in house refuse, realizes bioxin zero-emission; Adopt fusion technology, realize heavy metal and reclaim, avoided heavy metal pollution; Whole production technology closed self-circulation, not discharge; Energy-conserving and environment-protective technology, utilizes house refuse to transform the heat chemistry principle in gas-making process, and the heat energy that reaction is generated makes full use of. For the production of the middle workshop section that needs heat energy, realize thermal energy balance, not only energy-conservation, but also not discharge, realize environment-protecting clean and produce; Gas separation: effectively realize CH₄With CO, CO₂Separate CH₄Content reaches more than 95%.