CN106398771A - Solid organic waste gasifying process capable of reducing dioxin emission - Google Patents
Solid organic waste gasifying process capable of reducing dioxin emission Download PDFInfo
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- CN106398771A CN106398771A CN201610917240.7A CN201610917240A CN106398771A CN 106398771 A CN106398771 A CN 106398771A CN 201610917240 A CN201610917240 A CN 201610917240A CN 106398771 A CN106398771 A CN 106398771A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
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Abstract
The invention relates to a solid organic waste gasifying process capable of reducing dioxin emission. The solid organic waste gasifying process comprises steps of separation, addition of an alkaline metal compound, gasification in a gasifying furnace, purification of gasified gas, secondary pyrolysis-catalytic reforming and the like. The process adopts a front-end processing process cooperating with gasification carbon residues serving as a catalyst, and has the characteristics that the production cost is low and the dioxin emission can be reduced effectively.
Description
Technical field
The present invention relates to a kind of solid organic castoff gasifying process, particularly to a kind of solid reducing dioxin discharge capacity
Organic waste material for gasification technique, belongs to solid organic castoff handling process field.
Background technology
With China's rapid development of economy, the yield of all kinds of solid organic castoff in city is increasing sharply, to live
As a example rubbish, the domestic waste yield of China in 2015 has just reached 2.52 hundred million tons, estimates the year two thousand twenty and is up to 3.2
Hundred million tons, from the point of view of the whole country, garbage-surrounded city has been in universal phenomenon, and no landfill stacks place in many cities, and rubbish produces
Amount is also being increased with annual 8%～10% speed.Other industrial refuses, various breeding waste, mud, straw etc. are various solid
Body organic waste is similarly increasing in different proportions, if can not process in time, ecological environment will be produced with very big danger
Evil.
The disposal technology of solid organic castoff mainly has landfill, compost and burning at present, and the presence of this several method accounts for
Ground area is big, process defect that is not thorough, can producing secondary pollution, although wherein incineration technology is in terms of minimizing and resource
There is prominent advantage, but its large quantity of exhaust gas producing also causes different degrees of pollution to environment, and " two evils producing therewith
English " is known as by force " poison in century " because toxicity, even more makes the complexion changed of common people's news, and it is also on each city is continuous that neighbour keeps away effect
Drill.Dioxin is the serious liposoluble substance of a kind of colorless and odorless, toxicity, and what it referred to is not a kind of single substance, but knot
Structure and all much like two big class organic compound comprising numerous congeners or isomer of property, full name is many chlorodiphenyls respectively
And dioxin (abbreviation PCDDs) and polychlorinated dibenzo (abbreviation PCDFs).Wherein PCDDs has 75 kinds of isomers, and PCDFs has
135 kinds of isomers, so, dioxin includes 210 kinds of compounds, and this kind of material is highly stable, fusing point higher it is extremely difficult to be dissolved in water,
Most of organic solvent can be dissolved in, be the liposoluble substance of colorless and odorless, be very easy to accumulate in vivo.In environment
Dioxin is difficult to natural degradation and eliminates, and its toxicity is very big, is 130 times, 900 times of arsenicum of cyanide, it has strong
Carcinogenecity, and fetal anomaly can be caused, the immunologic function to human body and reproductive function cause to damage, IARC
It has been classified as mankind's one-level carcinogen.Dioxin is often present in air, soil and water with small granule, main pollution
Source is chemical industry, metallurgical industry, waste incineration, papermaking and produces agrochemical industry.Plastic bag used by daily life, PVC
The things such as (polrvinyl chloride) product all contain chlorine, burn these article when will discharge dioxin.Therefore, development safe efficient,
Cleaning, the treatment technology of environmentally friendlyization and product have become as the focus of masses and the problem that environmental worker is extremely urgent.
Gasification technology because of its cleaning, efficiently, just becoming the new direction of solid organic castoff treatment technology.Gasification technology is
A kind of by solid fuel under certain thermodynamic condition, by means of gasifying medium (air, oxygen, water vapour), be allowed to occur
The reactions such as pyrolysis, oxidation, reduction, are converted into the process of the micro-molecular gas such as hydrogen, carbon monoxide, methane.From theory and practice
From the point of view of experience, compared to directly burning, gasification technology has extremely obvious advantage in the emission control of heavy metal and dioxin.Close
The problem of " dioxin " in gasifying process, industry has different arguments, it is believed that gasification is the environment in micro- oxygen or anoxia
Under carry out, overall process is reducing atmosphere, will not produce " dioxin " theoretically, so when doing gasifying process, gasification
Gas removing dust, decoking etc. directly use after purifying technique, do not consider the emission problem of " dioxin " during fume treatment.We
Think from the Production conditions of " dioxin ", gasification and dry distilling all can produce " dioxin ", and from the point of view of practical experience, solid has
Really presence a small amount of " dioxin " in the gasification gas of machine garbage, and different gasifying process, " dioxin " content
Different, such as when taking fixed bed gasification, the amount that downdraft produces will be less than the amount of updraft type generation.Therefore, in solid
During organic waste material for gasification, the control of dioxin is necessary.
Content of the invention
The solid organic castoff gasifying process that the present invention reduces dioxin discharge capacity discloses new scheme, at front end
The cooperation of science and engineering skill is used by the use of vaporized carbon slag as catalyst, solves existing handling process high cost it is impossible to control dioxin
The problem of discharge.
The solid organic castoff gasifying process that the present invention reduces dioxin discharge capacity comprises the following steps：(1) will be pending
Solid waste is classified, and the metallic article isolated, polyvinyl chloride product, plastic rubber product are recycled,
By the changing food waste isolated Concentrated fermentation compost, the municipal sludge isolated is discharged storage, obtains treating gasification process
Garbage；To treat in gasification process garbage add metal alkaline compound formed gasified raw material；(3) gasified raw material is inputted
Carry out gasification reaction, the material in down-draft type gasifying furnace includes drying layer from top to bottom successively, pyrolysis is done in down-draft type gasifying furnace
Evaporate layer, oxide layer, reducing zone, layer of carbon, gasifying medium from top to bottom sequentially passes through the drying layer of down-draft type gasifying furnace, pyrolysis is done
Evaporate layer, oxide layer, reducing zone, layer of carbon and gasified raw material and react formation gasification gas and gasification furnace residue；(4) will be gentle for the gas that gasifies
Change stove residue is passed through secondary pyrolysis catalytic reforming unit and carries out pyrolysis catalytic reforming reaction, and gasification furnace residue exists as catalyst
Under the conditions of 850 DEG C catalytic gasification gas carry out secondary pyrolysis reforming reaction obtain clean gas and reaction lime-ash；(5) lime-ash will be reacted
Discharge secondary pyrolysis catalytic reforming unit and make harmless recycling, clean gas are discharged secondary pyrolysis catalytic reforming unit and is passed through heat
Can system or store for future use.
Further, for purified gas activating QI, the gasification gas that (3) step obtains is passed through cyclone dust extractor by this programme, will gasify
Dusting solid impurity in gas is separated entrance collecting tank and is focused on, and the gasification gas of removing dust is entered in alkali liquor spray column
It is passed through after process in step secondary pyrolysis catalytic reforming unit (4).
Further, stable in order to ensure reaction temperature, this programme be passed through step secondary pyrolysis catalytic reforming unit (4)
Interior partial gasification gas combustion heat release come to keep secondary pyrolysis catalytic reforming unit interior reaction temperature be 850 DEG C.
Further, the step of this programme (2) in metal alkaline compound be CaO, MgO.
Further, the step of this programme (2) in metal alkaline compound can also be CaCO3、MgCO3.
Further, in order to improve the efficiency of reaction, this programme step (3) in, the temperature of pyrogenation and carbonization layer is 150 DEG C～
900 DEG C, the temperature of oxide layer is 900 DEG C～1200 DEG C, and the reaction temperature of reducing zone is 800 DEG C～1000 DEG C.
Further, in order to improve the efficiency of reaction further, this programme step (3) in, increase reducing zone thickness.
The solid organic castoff gasifying process that the present invention reduces dioxin discharge capacity adopts the cooperation of front-end processing technique to utilize
Vaporized carbon slag uses as catalyst, has low production cost, can effectively reduce the feature of dioxin emission.
Brief description
Fig. 1 is the principle schematic of this programme gasifying process.
Specific embodiment
Present solution provides a kind of reliable control process in solid organic castoff gasification dioxin and
Equipment.
Organic substance pyrolytic in the environment of chloride ion presence, the catalytic action through metal ion generates polychlorinated biphenyl
Material, thus forming dioxin, also has from low-temperature zone de novo synthesis dioxin.Research find, dioxin fusing point 303 DEG C～
305 DEG C, boiling point, at 421 DEG C～446 DEG C, starts to thermally decompose at 705 DEG C, decomposes completely within 2 seconds when more than 800 DEG C, but when temperature
When degree drops to 400 DEG C～250 DEG C, it is returned to original chemical molecular form.Mainly synthesize each dvielement of dioxin
C, H, O, CL and metal ion all also exist, and the probability returning to original chemical specieses is that certainly exist.Although gasification is micro-
The environment of oxygen or anoxia is carried out, but Organic substance also can produce oxygen element when decomposing, under conditions of other elements coexist, raw
The probability becoming dioxin also affirms presence, and equally, Organic substance, under the process conditions of dry distilling, also can produce dioxin.
Typically result from combustion process and this characteristic of combustion product gases cooling procedure, traditional handicraft for dioxin-like chemical
Following measures are typically taken to reduce the discharge of dioxin harmful substance：
1. high-temperature stable burning.After incineration of waste, flue gas tapping temperature is higher than 800 DEG C, and flue gas is in residing time in furnace
During more than 2S, about 99.9% dioxin-like chemical can be decomposed.
2. carry out second-time burning.Flue gas after incineration of waste carries out second-time burning in stove, can significantly reduce the concentration of CO,
Reduce dioxin-like chemical concentration simultaneously.
3. with other thing mixed burnings.Add the oxidizers such as coal, paper, wood in stove during burning, also can obviously reduce two evils
English class material concentration.
4. rapidly cooling or activity spray carbon adsorption.Flue gas flies out behind combustion furnace, rapidly drops flue-gas temperature in 0.2s
To 100 DEG C, the purge ratio of flue dust and dioxin-like chemical reaches 99%.Also can use activity injection carbon adsorption, reduce dioxin thing
The discharge of matter.
For preventing secondary pollution, conventional spam burning electricity generation factory employs tail gas treatment device in large scale to process two
Dislike English class and other harmful substances matter, from the point of view of processing procedure, be end-o f-pipe -control because take, need exhaust gas volumn to be processed huge,
So that investment and operating cost increase considerably, typically constitute from about the half of total investment expenses, directly affects the warp of investor
Ji benefit and development.Under similar circumstances, the flue gas amount that gasifying process produces is only 1/6th of burning process, not
On the premise of considering dioxin, if front end carries out purified treatment to gasification gas, end avoids the need for smoke gas treatment facility, significantly
Decrease scale of investment and operating cost, there is very big innate advantage.
Carry out front-end processing, remove or reduce the element species producing dioxin, control the ambient temperature of each conversion zone, make
The dioxin without or with denier in the gasification gas of clean-up stage must be entered.Dioxin-like chemical is by the big element of C, H, O, CL tetra-
Constitute, during generation, main catalysis by metal ion (mainly copper) generates, solid organic castoff complicated component, C, H,
O be its constitute basic element, CL ion be primarily present in PVC (polrvinyl chloride) product, plastic rubber product, changing food waste,
In the solid organic castoffs such as municipal sludge, metal ion is also existed with the form of metallic article and other compound, gas
In metallization processes be have oxidation reaction it can be seen that, in this several big element, C, H are inevitable, O, CL and metal ion
Can remove or reduce.
Analyzed and demonstration based on above, the solid organic castoff gasifying process of the minimizing dioxin discharge capacity of this programme is main
Including herein below.
(1) material sorting.
Solid waste is classified, metallic article, PVC (polrvinyl chloride) product, plastic rubber product are carried out back
Receipts utilize, changing food waste Concentrated fermentation compost, and municipal sludge concentrates the total of specialty disposal, minimizing CL ion and metal ion
Amount.
(2) select suitable gasifying process and equipment.
Fixed-bed gasification furnace becomes first-selected because of its technology maturation, production process safety and stability, from the point of view of gasification reaction process,
Uniflow gas stove is from top to bottom followed successively by drying layer, pyrogenation and carbonization layer, reducing zone, oxide layer, ash bed, gasifying medium by under
And on through lime-ash preheating, carry out violent oxidation reaction with pyrolytic carbon, produce substantial amounts of heat and carbon dioxide and reducing zone
Carbon carries out reduction reaction, generate the fugitive constituent that carbon monoxide and hydrogen are produced with pyrogenation and carbonization layer together with by the dry materials on upper strata
After discharge out of the furnace and become flammable gasification gas, dioxin harmful substance mainly produces in pyrogenation and carbonization layer, drying layer material
It is directly entered gas-purification section after partial adsorbates.The material of down-draft type gasifying furnace is followed successively by drying layer, pyrogenation and carbonization from top to bottom
Layer, oxide layer, reducing zone, layer of carbon, gasifying medium is from top to bottom to sequentially pass through, and drying layer preheats, with pyrogenation and carbonization layer
The fugitive constituent producing passes through oxide layer together, carries out violent oxidation reaction with pyrolytic carbon, produces substantial amounts of heat and titanium dioxide
Carbon carries out reduction reaction with the carbon of reducing zone, generates the imflammable gas such as carbon monoxide and hydrogen and methane, through layer of carbon cooling
Enter adhesion afterwards, dioxin-like chemical mainly produces in pyrogenation and carbonization layer, decompose in oxidation high temperature section, in carbon slag
Layer decline because temperature is slow and once again partial synthesis it can be seen that, as long as controlling the oxygen content of oxidation panel, by SOLID ORGANIC
Garbage is also exhausted in oxidation panel because of the oxygen that pyrogenation and carbonization produces, and the secondary synthesis of dioxin will be greatly decreased.Compare
Say, down-draft type gasifying furnace is more beneficial for the control of dioxin, therefore in the present invention, it is preferred to adopt down-draft type gasifying furnace.
(3) add metal alkaline compound, play deacidification.
Add metal alkaline compound, such as HCL, the H in CaO, MgO etc., with reactant in gasification materiel2S occurs anti-
Should, play the effect of deacidification, reach the purpose of solid chlorine and solid sulfur, it reacts and is：
2HCl+CaO==CaCl2+H2O
H2S+CaO==CaS+H2O
2SO2+2CaO+O2==2CaSO4
2HCl+MgO==MgCl2+H2O
H2S+MgO==MgS+H2O
2SO2+2MgO+O2==2MgSO4
Above reaction runs through whole gasification reaction process, and when 600～800 DEG C, reaction is the most acutely that is to say, that solid chlorine
Best results, preferably, this temperature section is in the decomposition section of dioxin to deacidification effect, so can be greatly decreased and enter back segment
HCL.Consider from operating cost, CaO, MgO can be changed to CaCO3、MgCO3Deng.
(4) improve the oxide layer of down-draft type gasifying furnace and the temperature of reducing zone, increase the thickness of reducing zone simultaneously.
The temperature of oxide layer is improved to 900 DEG C～1200 DEG C, the temperature of the pyrogenation and carbonization layer on corresponding upper strata also can on
Rise to 150 DEG C～900 DEG C, dried material here thermally decomposes, discharge fugitive constituent and tar, form coke, specific as follows.
Dried material → coke+tar+gas (H2, CO, CO2, CH4, C2H4, C2H6, CmHn).
There is the coke of very exothermic, H2, CO oxidation reaction in oxide layer, specific as follows.
Coke+O2→aCO2+bCO+cH2O
2CO+O2==2CO2
2H2+O2==2H2O
Meanwhile, tar is subject to high temperature action that cracking reaction occurs, specific as follows.
Tar → gas (H2, CH4, C2H4, C2H6, CmHn, CO, CO2).
Reducing zone reaction temperature is about 800 DEG C～1000 DEG C, mainly has coke and going back that water vapour and carbon dioxide occur
Former reaction, is the endothermic reaction, specific as follows.
Coke+H2O→CO+H2
Coke+CO2→2CO
Tar continues to occur cracking reaction, specific as follows.
Tar → gas (H2, CH4, C2H4, C2H6, CmHn, CO, CO2)
Oxidation panel not consumption completely oxygen reducing zone continue with coke, H2, CO reaction.
Meanwhile, the dioxin producing in pyrogenation and carbonization section thermally decomposes in the high-temperature region of oxidation and reducing zone, its
Product is micro-molecular gas and its compound of C, H, O, CL, and the final product in the high-temperature region of reducing zone is CO, H2, HCL, increase
Plus the thickness of reducing zone material, primarily to consuming unnecessary oxygen, reduce the generation of dioxin predecessor, simultaneously for two evils
The decomposition of English and tar provides enough time of staying and space.
(5) gasification gas purifies.
Enter gas cleaning plant from gasification furnace fuel gas out, this device is by cyclone dust extractor and alkali liquor spray column
Composition, carries out to solid impurities such as the dust being mixed in fuel gas separating by cyclone dust extractor, dust after separating etc. is solid
Body impurity enters collecting tank and focuses on.The fuel gas that cyclone dust extractor is separated enters in alkali liquor spray column, this section master
If to sour gas HCL, H in gas2S is removed, and removes part tar.
(6) gasify gas secondary pyrolysis catalytic reforming.
Secondary pyrolysis catalytic reforming unit is the tubular reactor that inside is moved towards up and down, using gasification furnace carbon slag as catalyst
It is covered with whole device, gasification gas is passed through from device top, partial gasification combustion heat release maintains reaction temperature at 850 DEG C about,
At a temperature of this, the micro dioxin in gasification gas and carbon slag decomposes rapidly, and the coke tar cracking in gasification gas produces H2And white carbon black, H2
The oxide of ferrum in carbon slag can be reduced to ferrum simple substance by the CO in gentle activating QI, and ferrum simple substance has more preferable catalysis and lives to tar
Property, white carbon black can be deposited on catalyst surface, with the CO in gasification gas2React with vapor, enable catalyst to keep catalysis
Activity.CaO, the MgO not consumed in carbon slag continues to have reacted solid chlorine effect, the CO that combustion gas activating QI produces with the HCL in product2
React generation CO ejector together with other fuel gas with carbon slag and white carbon black.Vaporized carbon slag is honeycombed grain, specific surface
Long-pending big, there iing CO as catalyst2It is pyrolyzed, is catalyzed and splits with dioxin, tar etc. with vapor participation and hot conditionss
Solution and catalytic reforming reaction, speed is fast, efficiency high, has thoroughly decomposed the dioxin in gasification gas and carbon slag, tar is carried out
Catalytic reforming, make use of the energy of tar, has purified gasification gas, improves the quality of combustion gas, is conducive to follow-up further profit
With.
Based on process above content, the solid organic castoff gasifying process of the minimizing dioxin discharge capacity of this programme have with
Lower technical advantage.
1st, small investment, operating cost is low.
For processing dioxin in the flue gas of end, in front-end processing, not only treatment facility floor space is little, throws
Money is few, simultaneously because make use of vaporized carbon slag as the catalyst to using, its cost is far below semidry method and sprays CaO and activated carbon
Powder, reduces operating cost, improves the competitiveness of enterprise.
2nd, control of dioxins effect is obvious.
After solid organic castoff gasification, the dioxin script in gasification gas is just low than burning process, through cyclone dust removal and
Alkali liquid washing removes outside a part, and enters secondary pyrolysis the catalytic reforming system with the water vapour producing, and processes through this system
Afterwards, not only the dioxin in gasification gas has obtained thorough decomposition, greatly reduces the vaporized carbon slag using as catalyst simultaneously
In dioxin, obvious environment benefit.
3rd, improve combustion gas quality.
In solid organic castoff gasification product, the energy of tar accounts for the 5%～15% of total energy, if these energy
Can not in addition effectively utilizes, will result in great waste, meanwhile, tar easily condenses at low temperature, with the impurity such as water, dust knot
Can block after conjunction, the equipment such as corrosion pipeline valve.And tar is difficult to burning completely at low temperature, is also easy to produce white carbon black, can damage
Gas-fired equipment, so the gasification coal-tar middle oil a large amount of presence of gas, can significantly limit gasification gas further with.Urge through secondary pyrolysis
Change after reforming, tar conversion is fuel gas, the coal-tar middle oil content of gasification gas will be less than 20mg/m3, meet biological fuel gas mark
Standard, the quality of gasification gas is improved, and is conducive to the utilization of next step.
4th, applied widely.
This programme is equally applicable to the control of other gasifying process dioxin, and solid organic castoff is through same operation：
Sorting → add metal alkaline compound → gasification furnace gasify → gasify gas purify → secondary pyrolysis catalytic reforming → clean fuel gas,
Wherein, routinely reaction temperature controls gasifying stage, the catalyst equally as secondary pyrolysis the catalytic reforming system for the residue after gasifying
To use, because, in other gasifying process, the carbon content in residue is relatively low, the carbon needing in addition interpolation part is to maintain the steady of system
Fixed operation.
Based on above technical advantage, the solid organic castoff gasifying process of the minimizing dioxin discharge capacity of this programme is compared now
Fixed-end forces technique is had to have prominent substantive distinguishing features and significantly improve.
It is public that the solid organic castoff gasifying process of the minimizing dioxin discharge capacity of this programme is not limited to specific embodiment
The content opened, the operating procedure that it comprises, on the premise of not violating technical specification and principle, can be entered for optimizing operation sequence
The suitable order of row is exchanged, and those skilled in the art fall within reference to the simple alternative that common knowledge is made according to this programme
The scope of this programme.
Claims (7)
1. reduce the solid organic castoff gasifying process of dioxin discharge capacity, it is characterized in that comprising the following steps：
(1) pending solid waste is classified, by the metallic article isolated, polyvinyl chloride product, plastic, rubber system
Product are recycled, and the municipal sludge isolated is discharged storage by the changing food waste isolated Concentrated fermentation compost,
Obtain treating gasification process garbage；
To treat in gasification process garbage add metal alkaline compound formed gasified raw material；
Will gasified raw material input down-draft type gasifying furnace in carry out gasification reaction, the material in down-draft type gasifying furnace from top to bottom according to
Secondary inclusion drying layer, pyrogenation and carbonization layer, oxide layer, reducing zone, layer of carbon, gasifying medium from top to bottom sequentially passes through downdraft gas
The drying layer of change stove, pyrogenation and carbonization layer, oxide layer, reducing zone, layer of carbon and gasified raw material react formation gasification gas and gasification furnace
Residue；
(4) gasification gas and gasification furnace residue are passed through secondary pyrolysis catalytic reforming unit and carry out pyrolysis catalytic reforming reaction, gasification furnace
Residue as catalyst catalytic gasification gas under the conditions of 850 DEG C carry out secondary pyrolysis reforming reaction obtain clean gas and reaction ash
Slag；
(5) reaction lime-ash is discharged secondary pyrolysis catalytic reforming unit and make harmless recycling, clean gas are discharged secondary pyrolysis and urges
Change reformer to be passed through heat energy system or store for future use.
2. the solid organic castoff gasifying process reducing dioxin discharge capacity according to claim 1 is it is characterised in that incite somebody to action
The gasification gas that (3) step obtains is passed through cyclone dust extractor, and the dusting solid impurity in gasification gas is separated entrance collecting tank collection
Middle process, the gasification gas of removing dust is entered and is passed through step secondary pyrolysis catalytic reforming unit (4) after processing in alkali liquor spray column
Interior.
3. the solid organic castoff gasifying process reducing dioxin discharge capacity according to claim 2 is it is characterised in that lead to
Enter partial gasification gas combustion heat release in step secondary pyrolysis catalytic reforming unit (4) to keep secondary pyrolysis catalytic reforming dress
Putting interior reaction temperature is 850 DEG C.
4. the solid organic castoff gasifying process reducing dioxin discharge capacity according to any one of claim 1 to 3, its
Be characterised by, step (2) in metal alkaline compound be CaO, MgO.
5. the solid organic castoff gasifying process reducing dioxin discharge capacity according to any one of claim 1 to 3, its
Be characterised by, step (2) in metal alkaline compound be CaCO3、MgCO3.
6. the solid organic castoff gasifying process reducing dioxin discharge capacity according to any one of claim 1 to 3, its
Be characterised by, step (3) in, the temperature of pyrogenation and carbonization layer is 150 DEG C～900 DEG C, and the temperature of oxide layer is 900 DEG C～1200 DEG C,
The reaction temperature of reducing zone is 800 DEG C～1000 DEG C.
7. the solid organic castoff gasifying process reducing dioxin discharge capacity according to claim 6 is it is characterised in that walk
Rapid (3) in, increase the thickness of reducing zone.
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Cited By (7)
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| CN107655011A (en) * | 2017-10-24 | 2018-02-02 | 江门绿润环保科技有限公司 | A kind of portable organic solid waste processing equipment |
| CN108456538A (en) * | 2018-01-11 | 2018-08-28 | 黄邦霖 | A kind of life refuse processing method |
| WO2019080187A1 (en) * | 2017-10-24 | 2019-05-02 | 江门绿润环保科技有限公司 | Pyrolysis treatment process for organic solid waste |
| CN109909265A (en) * | 2019-03-27 | 2019-06-21 | 中科天龙（厦门）环保股份有限公司 | A kind of solid waste treatment system |
| CN110358578A (en) * | 2019-06-28 | 2019-10-22 | 华中科技大学 | A kind of fire coal coupled biological matter power generating simultaneously charcoal system |
| CN110976487A (en) * | 2019-12-24 | 2020-04-10 | 江苏筑原生物科技研究院有限公司 | Method for improving hydrogen yield by catalytic pyrolysis of organic solid waste by using industrial waste residues |
| CN112266793A (en) * | 2020-09-27 | 2021-01-26 | 重庆亿源环保工程有限公司 | Method for preparing warming agent by using solid waste |
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