CN104307295B - A kind of garbage incinerating tail gas processing method - Google Patents
A kind of garbage incinerating tail gas processing method Download PDFInfo
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- CN104307295B CN104307295B CN201410634385.7A CN201410634385A CN104307295B CN 104307295 B CN104307295 B CN 104307295B CN 201410634385 A CN201410634385 A CN 201410634385A CN 104307295 B CN104307295 B CN 104307295B
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- flue gas
- wet type
- deduster
- depickling
- gas
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Abstract
A kind of garbage incinerating tail gas processing method, concrete steps are: flue gas is through first order wet type depickling deduster spray depickling dedusting, and then by sack cleaner and activated carbon absorber, absorption dedusting is carried out to flue gas, then remaining flue gas is again through the spray depickling dedusting of second level wet type depickling deduster, last innocuous gas is discharged in air, after the neutralization of waste liquid in wet type depickling deduster by lime pond, adding basic agent again through precipitation, being sent in wet type depickling deduster for spraying sour gas by circulating pump.This method adopts two-stage wet type depickling dedusting, and be aided with sack cleaner and active carbon absorbs flue gas, purifies, the waste water produced is sent in wet type depickling deduster and is recycled after precipitation, interpolation alkali lye, not only the pernicious gas in flue gas is removed, avoid its atmosphere pollution, and utilized by waste liquid circulation, whole cyclic process is clean, efficient, environmental protection, is applicable to small towns, city and vigorously promotes the use.
Description
Technical field
The present invention relates to environmental technology field, is a kind of garbage incinerating tail gas processing method specifically.
Background technology
The processing method of house refuse mainly contains landfill, compost, burning etc.In recent years, along with China's expanding economy, the raising of house refuse amount and refuse thermal value, burning disposal method is the most effective waste disposal method.But, containing pernicious gases such as sulfur dioxide, hydrogen chloride, nitric oxide, nitrogen dioxide and dioxin in the tail gas that waste incineration produces, if these pernicious gases are directly discharged in air, will produce air quality and have a strong impact on.Although existing exhaust gas treating method can dispose most pernicious gas, or some pernicious gas is directly discharged in air, brings very large hidden danger.
Summary of the invention
For above-mentioned Problems existing, the object of this invention is to provide a kind of clean, efficient garbage incinerating tail gas processing method.
The object of the invention is to be achieved through the following technical solutions:
A kind of garbage incinerating tail gas processing method, comprises the following steps:
(1) flue gas in incinerator enters into first order wet type depickling deduster, under the spray effect of alkali lye, the temperature of high-temperature flue gas is reduced to less than 450 DEG C rapidly, decrease the generation of dioxin, and remove partially acidic gas in flue gas and bulky grain flue dust by the spray of alkali lye; Remaining flue gas enters into sack cleaner, and the waste liquid of generation enters into lime pond;
(2) waste liquid is after the neutralization in lime pond, after the precipitation of preliminary sedimentation tank and second pond, the waste liquid overflow on top is in circulatory pool, regularly add basic agent in circulatory pool, waste liquid pH value in guarantee circulatory pool is more than 10, then through circulating pump, above-mentioned alkaline waste liquor being delivered in the shower of first order wet type depickling deduster and second level wet type depickling deduster, regularly needing adding clear water in circulatory pool in order to supplement the water evaporated;
(3) remove the dust of in flue gas more than 50 μm through sack cleaner, remaining flue gas enters into activated carbon absorber;
(4) activated carbon absorber sponges dioxin, heavy metallic oxide microparticle and the remaining dust in flue gas;
(5) remaining flue gas is under the effect of air-introduced machine, the interlayer again entering into incinerator heats to 200-300 DEG C, and then enter into second level wet type depickling deduster, depickling dedusting is again carried out under the spray effect of alkali lye, finally discharged through chimney by innocuous gas, the waste liquid of generation enters into lime pond and recycles.
Beneficial effect of the present invention: this method adopts two-stage wet type depickling dedusting, and be aided with sack cleaner and active carbon absorbs flue gas, purifies, the waste water produced is sent in wet type depickling deduster and is recycled after precipitation, interpolation alkali lye, not only the pernicious gas in flue gas is removed, avoid its atmosphere pollution, and utilized by waste liquid circulation, whole cyclic process is clean, efficient, environmental protection, is applicable to small towns, city and vigorously promotes the use.
Accompanying drawing explanation
Fig. 1 is the flow chart of the inventive method.
Detailed description of the invention
The following examples can illustrate in greater detail the present invention, but do not limit the present invention in any form.
Embodiment 1, as shown in Figure 1:
(1) flue gas in incinerator enters into first order wet type depickling deduster, under the spray effect of alkali lye, the temperature of high-temperature flue gas is reduced to less than 450 DEG C rapidly, decrease the generation of dioxin, and remove partially acidic gas in flue gas and bulky grain flue dust by the spray of alkali lye; Remaining flue gas enters into sack cleaner, and the waste liquid of generation enters into lime pond;
(2) waste liquid is after the neutralization in lime pond, after the precipitation of preliminary sedimentation tank and second pond, the waste liquid overflow on top is in circulatory pool, regularly add basic agent in circulatory pool, waste liquid pH value in guarantee circulatory pool is more than 10, then through circulating pump, above-mentioned alkaline waste liquor being delivered in the shower of first order wet type depickling deduster and second level wet type depickling deduster, regularly needing adding clear water in circulatory pool in order to supplement the water evaporated;
(3) remove the dust of in flue gas more than 50 μm through sack cleaner, remaining flue gas enters into activated carbon absorber;
(4) activated carbon absorber sponges dioxin, heavy metallic oxide microparticle and the remaining dust in flue gas;
(5) remaining flue gas is under the effect of air-introduced machine, the interlayer again entering into incinerator heats to 200-300 DEG C, and then enter into second level wet type depickling deduster, depickling dedusting is again carried out under the spray effect of alkali lye, finally discharged through chimney by innocuous gas, the waste liquid of generation enters into lime pond and recycles.
Claims (1)
1. a garbage incinerating tail gas processing method, is characterized in that, comprises the following steps:
(1) flue gas in incinerator enters into first order wet type depickling deduster, under the spray effect of alkali lye, the temperature of high-temperature flue gas is reduced to less than 450 DEG C rapidly, decrease the generation of dioxin, and remove partially acidic gas in flue gas and bulky grain flue dust by the spray of alkali lye; Remaining flue gas enters into sack cleaner, and the waste liquid of generation enters into lime pond;
(2) waste liquid is after the neutralization in lime pond, after the precipitation of preliminary sedimentation tank and second pond, the waste liquid overflow on top is in circulatory pool, regularly add basic agent in circulatory pool, waste liquid pH value in guarantee circulatory pool is more than 10, then through circulating pump, above-mentioned alkaline waste liquor being delivered in the shower of first order wet type depickling deduster and second level wet type depickling deduster, regularly needing adding clear water in circulatory pool in order to supplement the water evaporated;
(3) remove the dust of in flue gas more than 50 μm through sack cleaner, remaining flue gas enters into activated carbon absorber;
(4) activated carbon absorber sponges dioxin, heavy metallic oxide microparticle and the remaining dust in flue gas;
(5) remaining flue gas is under the effect of air-introduced machine, the interlayer entering into incinerator heats to 200-300 DEG C, and then enter into second level wet type depickling deduster, depickling dedusting is again carried out under the spray effect of alkali lye, finally discharged through chimney by innocuous gas, the waste liquid of generation enters into lime pond and recycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634385.7A CN104307295B (en) | 2014-11-12 | 2014-11-12 | A kind of garbage incinerating tail gas processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634385.7A CN104307295B (en) | 2014-11-12 | 2014-11-12 | A kind of garbage incinerating tail gas processing method |
Publications (2)
| Publication Number | Publication Date |
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| CN104307295A CN104307295A (en) | 2015-01-28 |
| CN104307295B true CN104307295B (en) | 2016-01-20 |
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| CN201410634385.7A Active CN104307295B (en) | 2014-11-12 | 2014-11-12 | A kind of garbage incinerating tail gas processing method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104913310A (en) * | 2015-07-09 | 2015-09-16 | 广州市美控电子科技有限公司 | Waste incineration innocent treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992000136A1 (en) * | 1990-06-25 | 1992-01-09 | Occidental Chemical Corporation | Simultaneously reducing dioxins and controlling hydrochloric acid emissions from solid waste incinerators |
| CN201175646Y (en) * | 2008-03-04 | 2009-01-07 | 上海日技环境技术咨询有限公司 | Destructor plant flue-gas deacidification wet type scrubber tower |
| CN202460403U (en) * | 2012-03-13 | 2012-10-03 | 秦皇岛环美实业有限公司 | Municipal solid waste incineration flue gas treatment system |
| CN203899430U (en) * | 2014-03-02 | 2014-10-29 | 中国瑞林工程技术有限公司 | System for processing incinerating gas |
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