CN101298914B - Urban refuse pyrolysis processing method - Google Patents
Urban refuse pyrolysis processing method Download PDFInfo
- Publication number
- CN101298914B CN101298914B CN2008101227036A CN200810122703A CN101298914B CN 101298914 B CN101298914 B CN 101298914B CN 2008101227036 A CN2008101227036 A CN 2008101227036A CN 200810122703 A CN200810122703 A CN 200810122703A CN 101298914 B CN101298914 B CN 101298914B
- Authority
- CN
- China
- Prior art keywords
- gas
- refuse
- processing method
- thermal decomposition
- combustion
- Prior art date
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a municipal refuse pyrolysis processing method, which puts the combustible gas into the air inlet of the container of the municipal refuse; the high temperature combustible gas dries and pyrolyzes the municipal refuse; the air in the container filled with the municipal refuse is discharged from the air outlet of the container; the fuel gas discharged from the air outlet of the container is burnt completely in the gas burner. The invention uses the biomass high temperature combustible gas generated by the forestry and agricultural residues to re-pyrolyzes the municipal refuse, opens up the novel usage of the biomass energy high efficiency use, to make the biomass energy utilization, the environmental protection, the refuse innocuity, the refuse resource integrated.
Description
Technical field
The present invention relates to the daily-life garbage without environmental pollution processing technology field, particularly a kind of urban refuse thermal decomposition processing method.
Background technology
Dioxin comprises polychlorinated dibenzo-2 evil English PCDDs and many chlorodiphenyls furans PCDFs by 2 or 2 tricyclic aromatic organic compounds that the phenyl ring that is replaced by chlorine is formed of 1 oxygen atom connection, has 210 kinds of congeners, is referred to as dioxin.Studies show that: cl concn, flue-gas temperature, catalyst, flue gas oxygen content, fuel S content etc. have material impact to the discharging of dioxin in the waste incineration process in predecessor concentration, the flue gas.The main predecessor of dioxin has chlorophenol, chlorobenzene and Polychlorinated biphenyls.Chlorophenol, chlorobenzene, polyvinyl chloride PVC, inclined to one side polyvinyl chloride PVDC mainly generate PCDDs; Polychlorinated biphenyls, the main PCDFs that generates of polycyclic aromatic hydrocarbon reaction.Oxygenatedchemicals such as phenates, phenoxy group aluminium also can form PCDDs under catalytic action.
It is that rubbish is sent in the special incinerator that city garbage burning is handled, and by the incineration oxidation reaction, the organic carbon in the rubbish is converted into CO
2, hydrogen is converted into H
2O, and at high temperature kill virus and bacterium, accomplish waste reductionization, innoxious.Incinerator is the nucleus equipment of waste incineration, and the discharging of selecting which kind of incinerator directly to have influence on pollutant reaches the influence to environment.
In the world except that north america, the more incinerator that uses directly burns mode as grate furnace at present.Its rubbish is directly burning in burner hearth, the harmful ingredients in flue gas that produces in the chemical reaction is more, unavoidably can produce the oxidation of copper, the production of HCL, because rubbish may take place and roll inadequately in the deficiency of fire grate itself sometimes, cause burning dangerous, carbon is told in residual not burning in the flying dust, and the existence of these materials makes the dioxin that has decomposed synthetic once again in boiler and electrostatic precipitator.Fluctuate owing to the grate furnace furnace temperature is subjected to the variation of refuse thermal value in addition, make that the dioxin that produces in the waste incineration process is difficult to guarantee to decompose fully, thereby cause that dioxin emission increases.Eliminate dioxin and must drop into expensive tail gas treatment device, charcoal absorption, this cost of obviously paying is too high, makes investment originally high, and flue gas purification system is huge, and the contradiction that operating cost is high is more outstanding.And the active carbon after the use can't be regenerated, and becomes a new malicious source, again must handled.So, should we look for what kind of urban refuse thermal decomposition treatment technology to suppress dioxin and generate?
Summary of the invention
The object of the invention is exactly at the problems referred to above, discloses a kind of urban refuse thermal decomposition processing method.Technical solution of the present invention is as follows: a kind of urban refuse thermal decomposition processing method is characterized in that following steps: the air inlet that the high-temperature combustible gas body is fed the container that municipal refuse is housed; Described high-temperature combustible gas body is with described municipal refuse drying, pyrolysis; The described interior gas of container that municipal refuse is housed is discharged from the described gas outlet that the municipal refuse container is housed; Combustion gas completing combustion in the gas combustion stove that the gas outlet of the described container that municipal refuse is housed is discharged.
Described municipal refuse is by sorting, removes metal, the material that contains PCDD/Fs, material that chlorine-containing component is high, and the material that described chlorine-containing component is high is the inferior ethene of polyvinyl chloride, polychlorostyrene, polychlorostyrene resin.
Described high-temperature combustible gas body is a biological fuel gas, and described biological fuel gas is produced through pyrolytic gasification by agriculture and forestry organic waste material.
Described high-temperature combustible gas body also can be natural gas or coal gas.
The temperature of described high-temperature combustible gas body is greater than 300 ℃.
The ignition temperature of the combustion gas that discharge described gas outlet is more than 950 ℃, and flue gas was at least 2 seconds at described gas combustion residing time in furnace.
Described gas combustion furnace exhaust gas is cooled to below 200 ℃ and discharges through chilling.
Described gas combustion stove does not have water screen tube.
Generate four the most basic conditions from dioxin below: chlorine, oxygen, temperature, catalyst, analyze the beneficial effect that the present invention compared with prior art has:
The present invention is by sorting, removes metal in the municipal refuse, the material that contains PCDD/Fs, material that chlorine-containing component is high, significantly reduced dioxin and generated necessary chlorine source and may form metallic catalyst.
It is gasifying agent pyrolysis rubbish that the present invention uses high-temperature fuel gas to replace air of the prior art, makes rubbish pyrolysis in anaerobic state, gasification, and Cu, AL, Fe etc. are difficult for oxidized, have weakened the build environment of dioxin.
Be the middle high heating value combustion gas that high-temperature fuel gas and refuse pyrolysis gas mix in the gas combustion stove among the present invention, cooperate the capacity air, ignition temperature is more than 950 ℃, and flue gas stopped greater than 2 seconds, all gasification organic matters can be burnt; Because of the gas combustion stove does not have water screen tube, there is not the dead angle, so temperature is even, organic matter that can residual harmful.
The refuse pyrolysis temperature is lower among the present invention, and heavy metal is not decomposed basically, heavy metal ion is seldom arranged in the flue gas, thereby reduced catalyst component; Because refuse pyrolysis is in the reduction oxygen-free atmosphere, so SO
2, NOx, NO
2Extremely low Deng pernicious gas content; The gas combustion stove is a high-temp combustion, and tail gas CO is close to 0, so the dioxin value is in very low level.
Be gas combustion in the gas combustion stove among the present invention, avoided the carbon residue in the flue gas to exist, weakened the build environment of dioxin.Because the gas combustion stove is Solid Bed, so can not produce flue dust, do not have not that burnout residual carbon enters in the flue gas, therefore, this system need not be provided with huge dust arrester and other purifier, can reach standard limit of smog release.
The present invention utilizes biomass high-temperature combustion gas that the agriculture and forestry organic waste material pyrolysis produces pyrolysis municipal refuse again; opened up the efficient new purposes of utilizing of biomass energy; Biomass Energy Utilization, environmental protection, garbage harmless, garbage as resource are organically combined, will produce huge environmental benefit, social benefit, economic benefit.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is described in detail.
Municipal refuse is by sorting, material that remove metal, contain the PCDD/Fs material, chlorine-containing component is high such as PVC polyvinyl chloride, the inferior ethene of polychlorostyrene, polychlorostyrene resin etc.; Municipal refuse is made derivatived fuel after by sorting, and its granularity, composition and calorific value are close, and tenor is low, has significantly reduced dioxin and has generated necessary chlorine source and may form metallic catalyst.
The high temperature biological fuel gas that the first-selected agriculture and forestry organic waste material pyrolytic gasification of high-temperature fuel gas produces under economy permission situation, also can heat natural gas or coal gas serves as high-temperature fuel gas.Temperature is fed the air inlet of the container that municipal refuse is housed greater than 300 ℃ above-mentioned fuel gas, and the high-temperature combustible gas body is with municipal refuse drying, pyrolysis.Pyrolysis temperature is controlled in 700 ℃, allows rubbish quiet and thermal decomposition lentamente under anaerobic state, this moment metallic copper, aluminium, iron can be not oxidized, do not have CO
2Generation, just do not have CuCL yet
2Generation and existence, the combustible component in the rubbish resolves into fuel gas.
High-temperature fuel gas, refuse pyrolysis gas feed completing combustion in the gas combustion stove from the gas outlet of container that municipal refuse is housed again, ignition temperature is more than 950 ℃, flue gas was at least 2 seconds at the gas combustion residing time in furnace, guarantee the complete decomposition combustion of poisonous and hazardous organic gas, thereby guaranteed the abundant decomposition of dioxin.The gas combustion stove does not have water screen tube, does not have the dead angle, so temperature is even, and organic matter that can residual harmful.
The gas combustion furnace exhaust gas is cooled to below 200 ℃ and discharges through chilling.PCDD/Fs is best, and to generate temperature be 280～450 ℃, reduces rapidly below the flue-gas temperature to 200 ℃, avoids dioxin and generate the most violent temperature province.
Because in the gas combustion stove is gas combustion, avoided the carbon residue in the flue gas to exist, weakened the build environment of dioxin.Because the gas combustion stove is a Solid Bed, so can not produce flue dust, not having not, burnout residual carbon enters in the flue gas again.Therefore, the present invention need not be provided with huge dust arrester and other purifier, can reach standard limit of smog release, only when the too high HCL of causing of plastic containing chlorine exceeds standard, just needs to increase simple alkaline cleaner.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (8)
1. a urban refuse thermal decomposition processing method is characterized in that following steps: the air inlet that the high-temperature combustible gas body is fed the container that municipal refuse is housed; Described high-temperature combustible gas body is with described municipal refuse drying, pyrolysis; Discharge from the described gas outlet that the container of municipal refuse is housed by the combustion gas that refuse pyrolysis gas and described high-temperature combustible gas body mix; With combustion gas completing combustion in the gas combustion stove that discharge the described gas outlet that the container of municipal refuse is housed, described high-temperature combustible gas body is biological fuel gas, natural gas or coal gas.
2. a kind of urban refuse thermal decomposition processing method according to claim 1 is characterized in that described municipal refuse by sorting, removes metal, the material that contains PCDD/Fs, material that chlorine-containing component is high.
3. a kind of urban refuse thermal decomposition processing method according to claim 2 is characterized in that the high material of described chlorine-containing component is the inferior ethene of polyvinyl chloride, polychlorostyrene, polychlorostyrene resin.
4. a kind of urban refuse thermal decomposition processing method according to claim 1 is characterized in that described biological fuel gas is produced through pyrolytic gasification by agriculture and forestry organic waste material.
5. a kind of urban refuse thermal decomposition processing method according to claim 1, the temperature that it is characterized in that described high-temperature combustible gas body is greater than 300 ℃.
6. a kind of urban refuse thermal decomposition processing method according to claim 1, the ignition temperature that it is characterized in that the combustion gas that discharge described gas outlet is more than 950 ℃, and flue gas was at least 2 seconds at described gas combustion residing time in furnace.
7. a kind of urban refuse thermal decomposition processing method according to claim 1 is characterized in that described gas combustion furnace exhaust gas through chilling, is cooled to below 200 ℃ to discharge.
8. a kind of urban refuse thermal decomposition processing method according to claim 1 is characterized in that described gas combustion stove does not have water screen tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101227036A CN101298914B (en) | 2008-06-25 | 2008-06-25 | Urban refuse pyrolysis processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101227036A CN101298914B (en) | 2008-06-25 | 2008-06-25 | Urban refuse pyrolysis processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101298914A CN101298914A (en) | 2008-11-05 |
| CN101298914B true CN101298914B (en) | 2010-07-21 |
Family
ID=40078821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101227036A Expired - Fee Related CN101298914B (en) | 2008-06-25 | 2008-06-25 | Urban refuse pyrolysis processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101298914B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449875B (en) * | 2014-12-09 | 2017-06-06 | 中国东方电气集团有限公司 | A kind of plasma asistance heats fusion and gasification reactor |
| CN106111663B (en) * | 2016-06-24 | 2018-05-08 | 苏州新区环保服务中心有限公司 | A kind of pyrolysis gasification method of industrial solid castoff |
| CN107101206A (en) * | 2017-05-09 | 2017-08-29 | 高承疆 | Fuel gas wraps up the combustion method of flammable solid |
-
2008
- 2008-06-25 CN CN2008101227036A patent/CN101298914B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101298914A (en) | 2008-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Quina et al. | Air pollution control in municipal solid waste incinerators | |
| KR101395750B1 (en) | Dioxin treatability and treatability equipment structure | |
| CN109469903B (en) | Incineration treatment method for industrial solid waste | |
| CN1769397A (en) | Device and method for suppressing refuse end gas injurant using pyrolysis and aerification technology | |
| CN103438461B (en) | A kind of integral type pyrolysis restoring system and waste disposal method | |
| da Silva Filho et al. | Evaluation of gaseous emissions from thermal conversion of a mixture of solid municipal waste and wood chips in a pilot-scale heat generator | |
| CN107261788A (en) | The removal methods and device of a kind of high-temperature flue gas Zhong bioxin | |
| CN104006391B (en) | A kind of incinerator for medical garbage applying oxygen-enriched combustion technology | |
| CN104261645B (en) | A kind of sludge treatment technique and system | |
| CN209068514U (en) | Refuse gasification dual firing chamber flue gas Boiler Steam screw expansion electricity generation system | |
| US20110303134A1 (en) | Method and apparatus for treating solid wastes | |
| CN101298914B (en) | Urban refuse pyrolysis processing method | |
| CN111550795A (en) | Oxygen-deficient gasification plasma solid waste treatment system and method | |
| Safavi et al. | Dioxin and furan emissions from gasification | |
| CN108424790B (en) | Garbage gasification combined heat and power system | |
| JP5880835B2 (en) | Method for incineration of combustible materials containing radioactive cesium | |
| CN111197754A (en) | Green high-efficient hazardous waste rotary kiln incineration processing system based on oxygen-enriched air supply of secondary combustion chamber | |
| CN110699124A (en) | Method and system for organic solid waste gasification melting harmless treatment | |
| Tovazhnyanskii et al. | Effectiveness of operation of sewerage system of mobile complex of thermocatalytic waste treatment | |
| CN1222713C (en) | Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation | |
| CN111457388B (en) | System and method for co-burning solid hazardous waste and reducing dioxin discharge of chain furnace | |
| CN211260824U (en) | System for sludge and hazardous waste co-dispose | |
| Adekomaya et al. | Incineration and energy recovery from waste materials: Assessment of environmental impact of emitted gases | |
| CN107525083A (en) | A kind of urban refuse thermal decomposition processing method | |
| JP5950001B2 (en) | Incineration equipment for waste containing combustible materials containing radioactive cesium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHU YUEZHAO Free format text: FORMER OWNER: LIU WENZHEN Effective date: 20110113 Owner name: LIU WENZHEN |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210036 ROOM 401, UNIT 2, NO. 97, JIANGDONG NORTH ROAD, GULOU DISTRICT, NANJING CITY, JIANGSU PROVINCE TO: 210009 NO. 5, XINMOFAN ROAD, GULOU DISTRICT, NANJING CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110113 Address after: 210009 Gulou District, Jiangsu, Nanjing new model road, No. 5 Co-patentee after: Liu Wenzhen Patentee after: Zhu Yuezhao Address before: 401, room 2, unit 97, Jiangdong North Road, Gulou District, Jiangsu, Nanjing 210036, China Patentee before: Liu Wenzhen |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20140625 |
|
| EXPY | Termination of patent right or utility model |