CN105805754B - The refuse pyrolysis method for preventing dioxin from generating - Google Patents
The refuse pyrolysis method for preventing dioxin from generating Download PDFInfo
- Publication number
- CN105805754B CN105805754B CN201410841851.9A CN201410841851A CN105805754B CN 105805754 B CN105805754 B CN 105805754B CN 201410841851 A CN201410841851 A CN 201410841851A CN 105805754 B CN105805754 B CN 105805754B
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- Prior art keywords
- dioxin
- rubbish
- pyrolysis
- passed
- hot air
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- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims abstract description 33
- 239000012071 phase Substances 0.000 claims abstract description 20
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 239000003517 fume Substances 0.000 claims abstract description 10
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims abstract description 9
- 239000002956 ash Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000007790 solid phase Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000003818 cinder Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 23
- 230000000185 dioxinlike effect Effects 0.000 abstract description 22
- 230000007812 deficiency Effects 0.000 abstract description 4
- 239000002906 medical waste Substances 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 238000004056 waste incineration Methods 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007353 oxidative pyrolysis Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of refuse pyrolysis methods for preventing dioxin from generating.In order to overcome conventional garbage pyrolysis processing to be easy to produce dioxin, the deficiencies of investment is big, and operating cost is high, and the practicability is poor is handled, rubbish will be passed through 250 --- 280 DEG C of hot air treatments 1 --- 3 minutes by the present invention, obtain rubbish gas phase, the rubbish solid phase of no dioxin；The rubbish gas phase is exported, solid garbage is mutually passed through to 300 --- 500 DEG C of hot air treatments 2 --- 10 seconds, obtains ashes, the combustible fumes without dioxin；Collect the harmless sealing of ashes to utilize, the rubbish gas phase, combustible fumes be passed through 500 --- 600 DEG C hot air treatment 3 seconds, obtain the pyrolysis flame gas of no dioxin, after the thermal energy for collecting pyrolysis flame gas, conventional harmless processing up to standard is discharged.Present invention is mainly used for house refuses, treatment of!medical waste, it can prevent from generating dioxin-like chemical when refuse pyrolysis, and processing cost is low, small investment, adaptable.
Description
Technical field
The present invention relates to a kind of waste disposal method, specially a kind of refuse pyrolysis method for preventing dioxin from generating.
Background technique
Waste incineration pyrolysis be a kind of high temperature thermochemical treatment technology, the combustible component in rubbish in incinerator with sky
Oxygen in gas is reacted, and high-temperature gas and solid residue are converted into.Waste incineration pyrolytic process generates a large amount of thermal energy, volume
80%-90% can be reduced, the composed structure of harmful solid waste can be destroyed, kill pathogen, achieve the purpose that toxin expelling is removed the evil, have
There is the characteristics of decrement, harmless, recycling, be one of the garbage disposal means that current developed country is widely used, is ploughed in Japan etc.
The in great shortage country in ground, waste incineration pyrolysis processing ratio reach 65%-80%.But conventional garbage burns pyrolysis processing and has the following disadvantages
Place:
First is that conventional garbage, which burns pyrolytic process, will generate a large amount of dioxin, environment is polluted, and to the dioxin of generation
Processing difficulty is big, and processing cost is high.It deepens continuously although studying dioxin-like chemical and recognizing in recent years, technically leads to
Incinerator " 3T " control and stringent incineration flue gas technique are crossed, the emission control of dioxin-like chemical can be made stringent
Under standard, but one-time investment and operating cost are considerably increased, there are secondary for the dioxin-like chemical of gas cleaning removing
Pollution.
Need supplementary energy more second is that conventional garbage burns pyrolysis, and the utilization efficiency for the heat that waste incineration itself generates
It is not high enough, cause waste incineration at high cost.Conventional garbage burning has higher requirement to refuse thermal value and moisture.CJ/T 118-
2000 regulations " enter the average annual moisture content of furnace house refuse and are not preferably greater than 50%, average annual content of ashes is not preferably greater than 30%, average annual low
Position calorific value is not preferably less than 4.18MJ/kg ".For guarantee stablize burning, " domestic refuse treatment project technical regulation " clearly stipulate that
" waste incinerator should configure start-up burner and auxiliary burner ", needs to expend a large amount of auxiliary fuel.
Third is that the one-time investment of incineration plant construction is huge, the project construction occupied fund period is long.Build mark 142-2009 rule
Fixed, " the newly-built investment estimate of grate furnace incineration plant main equipment and system based on import can be by not higher than 500,000 yuan/(t/
D) it controls；The investment estimate that grate furnace incineration plant main equipment all domesticizes can be by not higher than 400,000 yuan/(t/d) control；
The indices for investment estimate of newly-built fluid bed furnace incineration plant can be by not higher than 350,000 yuan/(t/d) control ".There is no advanced economy
The basic and powerful investment capacity is difficult to build up.
Conventional garbage burn pyrolytic technique deficiency, significantly limit waste incineration pyrolysis China popularization and application,
Especially in the application of small and medium-sized cities.
Although domestic some entity and individual have been devoted to the research of waste incineration pyrolytic technique, try hard to overcome existing
The deficiency of garbage incineration technology.Such as document CN201410085904.9, it discloses on the basis of conventional garbage electricity generation system,
Pretreatment system, flue gas treating system and percolation liquid treating system are added, to reduce the generation of dioxin presoma；
Document CN201320090207.3 is disclosed using oxygen-enriched combusting equipment and secondary air system, to guarantee incinerator to greatest extent
Waste gas burning temperature makes the flow-disturbing for being conducive to secondary combustion chamber, extends in the secondary combustion chamber residence time, to decompose dioxin.
But these technology one-time investments are big, and operating cost is high, and effect is undesirable, not very practical.
Summary of the invention
The purpose of the present invention is to above-mentioned deficiencies, provide a kind of refuse pyrolysis method for preventing dioxin from generating, it
The generation of dioxin-like chemical can be prevented, and can prevent dioxin from synthesizing again in flue gas cool-down, can be prevented from source
The only generation of dioxin-like chemical, and energy conservation, processing cost is low, small investment, adaptable.
In order to achieve the above objectives, the technical scheme is that, which is:
A. rubbish is passed through 250 --- 280 DEG C of hot air treatments 1 --- 3 minutes, obtain no dioxin rubbish gas phase,
Rubbish solid phase；
B. the rubbish gas phase is exported, solid garbage is mutually passed through to 300 --- 500 DEG C of hot air treatments 2 --- 10 seconds,
Obtain ashes, the combustible fumes without dioxin；
C. collect the harmless sealing of ashes to utilize, the rubbish gas phase, combustible fumes be passed through 500 --- 600 DEG C of hot-airs
Processing 3 --- 5 seconds, the pyrolysis flame gas of no dioxin is obtained, after the thermal energy for collecting pyrolysis flame gas, conventional harmless processing row up to standard
It puts.
Compared with the prior art, rubbish is first passed through 250 --- 280 DEG C of hot air treatments 1 --- 3 minutes by the present invention,
Rubbish is preheated, dried, is pyrolyzed, the organic matter and chlorine element of dioxin-like chemical will be generated, 250 --- 280 DEG C of temperature
Degree is lower to generate gas phase (combustible organic) by pyrolysis, and export is separated from rubbish, does not allow organic matter and chlorine element most easily raw
It is stopped at 300 DEG C of -500 DEG C of temperature sections of dioxin-like chemical；And solid garbage is mutually passed through 300 --- 500 DEG C of hot air treatments
2 --- 10 seconds, the rubbish gas phase (combustible organic) of obtained combustible fumes and aforementioned generation is passed through 500 --- 600
DEG C hot air treatment 3 seconds, it would be possible to synthesize the exhaustive oxidations such as gas phase combustible organic, the flue gas of dioxin-like chemical, prevent
Dioxin-like chemical synthesizes again in flue gas cool-down.The generation of dioxin-like chemical is thus prevented from source, rather than
Make dioxin-like chemical qualified discharge by gas cleaning.
Rubbish substep classification is passed through hot-air and handled by the present invention, has not only controlled the generation of dioxin-like chemical, but also
Traditional refuse pyrolysis temperature is reduced, so that technique, equipment requirement are reduced, are simplified, thus to obtain energy-saving, improves benefit.
The present invention will likely generate the organic matter and chlorine element of dioxin-like chemical, 300 DEG C of temperature below pyrolysis at
Gas phase combustible organic separation export, rubbish solid phase is passed through 300 again --- 500 DEG C of hot air treatments, then by it is resulting can
Burning fume and derived rubbish gas phase (combustible organic) together, with 500 --- 600 DEG C of hot-air mixed pyrolysis processing do not allow
Organic matter and chlorine element are stopped in 300 DEG C of -500 DEG C of temperature sections of dioxin-like chemical most easily generated, it would be possible to synthesize dioxin
The gas phase combustible organic exhaustive oxidation of substance, prevents dioxin-like chemical from synthesizing again in flue gas cool-down.Thus from
The generation of dioxin-like chemical is prevented on source, rather than makes dioxin-like chemical qualified discharge by gas cleaning.
Present invention is mainly used for the harmless treatments of house refuse, medical waste etc., it can prevent dioxin-like chemical
Generation, and dioxin-like chemical can be prevented to synthesize again in flue gas cool-down, the production of dioxin-like chemical is prevented from source
Raw, it handles rubbish and is not required to sort and be crushed, and water content is not less than the rubbish of 2.51 MJ/kg no more than 60%, low heat valve
It all can directly handle, the original discharge concentration of dioxin-like chemical can reach standard as defined in GB 18458-2014 in flue gas, newly
Build waste incineration pyrolysis factory make an investment in 200,000 yuan/(t/d) within, qualified discharge and harmless treatment are at low cost, small investment, fit
Ying Xingqiang.
Specific embodiment
Embodiment 1
For handling house refuse, medical waste, the refuse pyrolysis method that the present invention prevents dioxin from generating is:
A. rubbish is passed through 250 --- 280 DEG C of hot-air stir process 1 --- 3 minutes, obtains the rubbish gas of no dioxin
Phase, rubbish solid phase；
B. the rubbish gas phase is exported, solid garbage is mutually passed through to 300 --- 500 DEG C of hot air treatments 2 --- 10 seconds,
Obtain ashes, the combustible fumes without dioxin；
C. collect the harmless sealing of ashes to utilize, the rubbish gas phase, combustible fumes be passed through 500 --- 600 DEG C of hot-airs
Processing 3 --- 5 seconds, the pyrolysis flame gas of no dioxin is obtained, after the thermal energy for collecting pyrolysis flame gas, conventional harmless processing row up to standard
It puts.
Building prefabrication block can be made with cement mixing in ashes, carry out the harmless utilization of sealing.
Another easy implementation, preheats rubbish with 300 DEG C of hot-airs below, is dried, is pyrolyzed 1 --- and 3 minutes,
Make it is most of may generate the organic matter of dioxin and is separated from rubbish with gas phase combustible organic, have the gas phase is flammable
The export of machine object is directly mixed and burned with 600 DEG C of hot-air, oxidative pyrolysis 3 --- and 5 seconds, make organic matter by fully and completely oxygen
Change, can so eliminate the generation of dioxin.Remaining rubbish solid phase can separately conventional treatment.
Claims (1)
1. a kind of refuse pyrolysis method for preventing dioxin from generating, it is characterized in that:
A. rubbish is passed through 250 --- 280 DEG C of hot air treatments 1 --- 3 minutes, obtains rubbish gas phase, the rubbish of no dioxin
Solid phase；
B. the rubbish gas phase is exported, solid garbage is mutually passed through to 300 --- 500 DEG C of hot air treatments 2 --- and 10 seconds, is obtained grey
Cinder, the combustible fumes without dioxin；
C. collect the harmless sealing of ashes to utilize, the rubbish gas phase, combustible fumes be passed through 500 --- 600 DEG C of hot air treatments
3 --- 5 seconds, the pyrolysis flame gas of no dioxin is obtained, after the thermal energy for collecting pyrolysis flame gas, conventional harmless processing discharge up to standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841851.9A CN105805754B (en) | 2014-12-30 | 2014-12-30 | The refuse pyrolysis method for preventing dioxin from generating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841851.9A CN105805754B (en) | 2014-12-30 | 2014-12-30 | The refuse pyrolysis method for preventing dioxin from generating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105805754A CN105805754A (en) | 2016-07-27 |
| CN105805754B true CN105805754B (en) | 2019-03-12 |
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| CN201410841851.9A Expired - Fee Related CN105805754B (en) | 2014-12-30 | 2014-12-30 | The refuse pyrolysis method for preventing dioxin from generating |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514166A (en) * | 2003-01-30 | 2004-07-21 | 天津大学 | Method of making city garbage as solid fuel and its application |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795672Y (en) * | 2005-03-30 | 2006-07-12 | 吴桐 | Three burning type burning processing system for liquid and solid waste materials |
| FR2918160A1 (en) * | 2007-06-28 | 2009-01-02 | Inst Francais Du Petrole | PROCESS FOR PREPARING A BIOMASS-CONTAINING MIXED LOAD AND HEAVY HYDROCARBON CUTTING FOR FURTHER GASIFICATION |
| KR20090121814A (en) * | 2008-05-23 | 2009-11-26 | 최장주 | Dry distillation type incinerator for rpf & rdf |
| CN101463256B (en) * | 2009-01-11 | 2012-09-05 | 朝阳森塬活性炭有限公司 | Method and special equipment for recycling organic refuse to produce fuel |
| CN102839023A (en) * | 2012-07-30 | 2012-12-26 | 华中科技大学 | Low temperature pyrolysis-high temperature gasification coupling disposal method for municipal solid waste |
| CN103900090B (en) * | 2014-03-10 | 2017-02-08 | 深圳市宇力科技有限公司 | Environment-friendly device matched with efficient and pollution-free refuse incineration power generation and using technology thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514166A (en) * | 2003-01-30 | 2004-07-21 | 天津大学 | Method of making city garbage as solid fuel and its application |
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| CN105805754A (en) | 2016-07-27 |
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Effective date of registration: 20201214 Address after: No.62, shengjishan, Jiaotang village, Danan Town, Guangfeng District, Shangrao City, Jiangxi Province Patentee after: Zhou Xiaohua Address before: 2nd floor, Yinxin garden, Lufeng Town, Xupu County, Huaihua City, Hunan Province Patentee before: HUNAN JINWEI ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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Granted publication date: 20190312 |