CN108211626A - Exhaust gas purification system and purification method after a kind of domestic garbage pyrolysis gasification - Google Patents
Exhaust gas purification system and purification method after a kind of domestic garbage pyrolysis gasification Download PDFInfo
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- CN108211626A CN108211626A CN201810097281.5A CN201810097281A CN108211626A CN 108211626 A CN108211626 A CN 108211626A CN 201810097281 A CN201810097281 A CN 201810097281A CN 108211626 A CN108211626 A CN 108211626A
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- spray column
- tail gas
- exhaust gas
- domestic garbage
- pyrolysis gasification
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 27
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 20
- 238000002309 gasification Methods 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 34
- 230000009977 dual effect Effects 0.000 claims abstract description 5
- 238000010304 firing Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 42
- 230000006872 improvement Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 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 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
Exhaust gas purification system after gasifying the invention discloses a kind of domestic garbage pyrolysis, the house refuse thermal pyrolysis device formed including pyrolysis oven, dual firing chamber and heat exchanger by pipeline successively drop-over, it is characterized in that, the exhaust gas cleaner being connect with heat exchanger is further included, the exhaust gas cleaner is included through pipeline successively the first spray column of drop-over, the second spray column, low-temperature plasma purifying device and third spray column.Advantageous effect：Above-mentioned technical proposal is taken to purify the tail gas after refuse pyrolysis gasification process so that clean-up effect is thoroughly and guarantee is safe；It is basic to realize exhaust gas, tail gas zero-emission, reduce the pollution to air, environment.
Description
Technical field
The present invention relates to technical field of waste treatment, tail gas clean-up system after more particularly to a kind of domestic garbage pyrolysis gasification
System.
Background technology
House refuse forms long-term existence in environment by a variety of pollutant components, be various pathogenic microorganisms evil Radix Rehmanniae and
Chemical, physics and biological conversion can occur under certain condition for breeding farm.If disposition, mismanagement, pollutant component
Environment will be polluted by approach such as water, gas, soil, food chains, be detrimental to health.At present, China's separate waste collection rate
It is low, mostly it is mixed collection, harmless treatment rate is not high, generally takes the processing mode of sanitary landfills, power generation by waste combustion, compost etc.,
Each technology has its defective：
1) sanitary filling field requirement is high, and the intractabilities such as percolate, heavy metal are big, occupies large amount of land resources, during stop
Between it is long, easily cause soil, water pollution, it is impossible to fundamentally realize garbage harmless；
2) power generation by waste combustion investment is big, and construction scale is big, can generate the secondary pollutions such as dioxin, for economic benefit, once
Property treating capacity is big, it is difficult to take into account Small Urban, country life rubbish；
3) compost treatment technology is still not mature enough, and the period is long, takes up a large area, and glass, plastics etc. cannot be by microorganisms point
Solution needs further developmental research；
4) garbage classification effect is poor, mixed processing, and reproducible utilization resource could not be recycled effectively, harmless treatment effect
Difference restricts sustainable development.
Increasing house refuse generates serious environmental problem.At present, the innoxious place of China's domestic waste
Reason rate is about 60%, and the harmless treatment rate of urban and rural domestic refuse is about 30%, and the resource rate that is recycled is lower.
Therefore just there is the appearance of refuse pyrolysis gasification system, refuse pyrolysis can be made to be reused after gasifying to its thermal energy,
But the tail gas after pyrolytic gasification can not really be handled, and many harmful substances are still contained in these tail gas, it is impossible to directly be arranged
It is put into air.
Invention content
The purpose of the present invention is overcoming defect of the existing technology, tail gas is net after providing a kind of domestic garbage pyrolysis gasification
Change system can make rubbish realize site, miniaturization, harmless treatment, and the tail gas after garbage disposal can be made up to standard
Discharge.
The present invention is realized by following technical solution：
Exhaust gas purification system after a kind of domestic garbage pyrolysis gasification, passes through pipe including pyrolysis oven, dual firing chamber and heat exchanger
The road house refuse thermal pyrolysis device that drop-over forms successively, which is characterized in that it is net to further include the tail gas being connect with heat exchanger
Makeup is put, and the exhaust gas cleaner is included through pipeline successively the first spray column of drop-over, the second spray column, low-temperature plasma
Purifier and third spray column.
As a further improvement, it is additionally provided with wind turbine in the gas outlet of the low-temperature plasma purifying device.
As a further improvement, the low-temperature plasma purifying device includes three groups of smoke abatement cleaning positions in parallel and 4 grades
The cleaning position that eliminates the unusual smell of series connection.
A kind of exhaust purifying method after domestic garbage pyrolysis gasification, which is characterized in that following steps：
Step 1 carries out spray washing to the tail gas after over-heat-exchanger out by the first spray column；Effect removal
Dust and tar in tail gas.
Tail gas after spray washing is carried out spraying cooling by step 2 by the second spray column；
Step 3 purifies the tail gas after spraying cooling by low-temperature plasma purifying device；
Step 4, purified gas pass through qualified discharge after third spray column progress spray washing again.
As a further improvement, the gas after spraying cooling will be carried out by the second spray column, and to enter low-temperature plasma net
The cleaning positions that eliminate the unusual smell for disguising three groups in putting smoke abatement cleaning positions in parallel and 4 grades of series connection carry out tail gas clean-ups.
As a further improvement, increase by a Fans in the low temp plasma purifier gas outlet, with
Ensure a whole set of purifier always be in a state of negative pressure under be fully cleaned up.
Beneficial effects of the present invention are：Above-mentioned technical proposal is taken to carry out the tail gas after refuse pyrolysis gasification process net
Change so that clean-up effect is thoroughly and guarantee is safe；It is basic to realize exhaust gas, tail gas zero-emission.
Description of the drawings
Fig. 1 is the system diagram of the present invention.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
As shown in Figure 1, exhaust gas purification system after a kind of domestic garbage pyrolysis gasification, including pyrolysis oven 1, dual firing chamber 2 and heat
The house refuse thermal pyrolysis device that exchanger 3 is formed by pipeline successively drop-over further includes the tail gas being connect with heat exchanger 3
Purifier, exhaust gas cleaner are included through pipeline successively the first spray column 4 of drop-over, the second spray column 5, low-temperature plasma
Purifier 6 and third spray column 7, it is contemplated that original wind turbine oepration at full load (wind turbine frequency 48 or so) increases purification
The crushing of 800-1000Pa is had after equipment, to ensure the yield of front end slurry-spraying pelletizing machine, original exhaust system is maintained, needs
The gas outlet of low-temperature plasma purifying device 6 adds a Fans 8.Low-temperature plasma purifying device 6 includes three groups of parallel connections
Smoke abatement cleaning position and 4 grades series connection the cleaning positions that eliminate the unusual smell, in the region since the effect of high voltage electric field is carried out at the same time following three
A purification process：1. making a large amount of water fog particles and aerosol becoming positively charged lotus, it is attracted under negative plate gravity and flows down
To discharge after being collected.2. make in ionized state odor molecules be stimulated ionize after molecular scission.3. air simultaneously
In water and oxygen can also generate the oxidizing species such as OH, active oxygen O, ozone under high energy electron bombardment, these are strong
Oxidizing substance can be reacted with odor molecules, make its decomposition, so as to promote off-flavor elimination.
Since the gas that rubbish generates in pyrolysis oven after pyrolytic gasification fully burns by dual firing chamber using heat exchange
Device, thermal energy can be reused, and if containing the tail gas direct emission of dust, tar, a small amount of peculiar smell, bioxin etc.
The pollution of air can be caused into air, it is therefore desirable to this tail gas clean-up to qualified discharge, purification method such as following steps：
Step 1 sprays the tail gas no more than 150 DEG C after over-heat-exchanger out by the first spray column
Washing removes the dust and tar in tail gas, also transfers heat in recirculated water, and gas temperature is 85 DEG C -95 DEG C at this time.
Tail gas after spray washing is carried out spraying cooling by step 2 by the second spray column, and purpose further drops
Temperature.
Outlet temperature after spraying cooling is passed through low-temperature plasma purifying device by step 3 no more than 50 DEG C of tail gas
It is purified；Also containing bioxin, a small amount of peculiar smell, sulfide, dust, a small amount of organic matter etc. in tail gas at this time.Low temperature etc.
The effect of ionic decontamination devices is removal tail gas Zhong bioxin, since bioxin is a kind of granular object under normal temperature state
Matter, then after low temperature plasma there is depositing dust of efficiently examining and making cuts, this granular substance can be absorbed,
Efficiency than general bag filter or active carbon purifying is high；Some peculiar smell, oxidation operation can also be fallen become two
Carbonoxide and water are discharged, and dust can also be filtered.
Step 4, purified gas pass through qualified discharge after third spray column progress spray washing again.Third spray column
Effect mainly sulfide is aoxidized after gas, foul gas be excluded in the form of sulfate after being aoxidized come.
As a further improvement, the gas after spraying cooling will be carried out by the second spray column, and to enter low-temperature plasma net
The cleaning positions that eliminate the unusual smell for disguising three groups in putting smoke abatement cleaning positions in parallel and 4 grades of series connection carry out tail gas clean-ups.
As a further improvement, increase by a Fans in the low temp plasma purifier gas outlet, with
Ensure a whole set of purifier always be in a state of negative pressure under be fully cleaned up.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. exhaust gas purification system after a kind of domestic garbage pyrolysis gasification, passes through pipeline including pyrolysis oven, dual firing chamber and heat exchanger
The house refuse thermal pyrolysis device that drop-over forms successively, which is characterized in that further include the tail gas clean-up being connect with heat exchanger
Device, the exhaust gas cleaner is including by pipeline, the first spray column of drop-over, the second spray column, low-temperature plasma are net successively
Makeup is put and third spray column.
2. exhaust gas purification system after a kind of domestic garbage pyrolysis gasification as described in claim 1, which is characterized in that described low
The gas outlet of warm plasma purifier is additionally provided with wind turbine.
3. exhaust gas purification system after a kind of domestic garbage pyrolysis gasification as claimed in claim 1 or 2, which is characterized in that described
Low-temperature plasma purifying device includes three groups of smoke abatement cleaning positions in parallel and the cleaning position that eliminates the unusual smell of 4 grades of series connection.
4. exhaust purifying method after a kind of domestic garbage pyrolysis gasification as described in claim 1, which is characterized in that following step
Suddenly：
Step 1 passes through the powder in the first spray column progress spray washing removing tail gas to the tail gas after over-heat-exchanger out
Dirt and tar；
Tail gas after spray washing is carried out spraying cooling by step 2 by the second spray column；
Step 3 purifies the tail gas after spraying cooling by low-temperature plasma purifying device；
Step 4, purified gas pass through qualified discharge after third spray column progress spray washing again.
5. exhaust purifying method after a kind of domestic garbage pyrolysis gasification as claimed in claim 4, which is characterized in that will be by the
Gas after two spray columns progress spraying cooling enters three groups of smoke abatement cleaning positions and 4 in parallel in low-temperature plasma purifying device
The cleaning position that eliminates the unusual smell of grade series connection carries out tail gas clean-up.
6. exhaust purifying method after a kind of domestic garbage pyrolysis gasification as claimed in claim 4, which is characterized in that described low
Isothermal plasma purifier gas outlet increases by a Fans, to ensure that a whole set of purifier always is in a state of negative pressure down
Be fully cleaned up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810097281.5A CN108211626A (en) | 2018-01-31 | 2018-01-31 | Exhaust gas purification system and purification method after a kind of domestic garbage pyrolysis gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810097281.5A CN108211626A (en) | 2018-01-31 | 2018-01-31 | Exhaust gas purification system and purification method after a kind of domestic garbage pyrolysis gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108211626A true CN108211626A (en) | 2018-06-29 |
Family
ID=62670203
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810097281.5A Pending CN108211626A (en) | 2018-01-31 | 2018-01-31 | Exhaust gas purification system and purification method after a kind of domestic garbage pyrolysis gasification |
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| Country | Link |
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| CN (1) | CN108211626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579018A (en) * | 2018-12-07 | 2019-04-05 | 朱海斌 | A kind of rural garbage pyrolyzing, gasifying and incinerating flue gas managing technique |
| CN109647142A (en) * | 2018-11-30 | 2019-04-19 | 浙江大维高新技术股份有限公司 | A kind of Cremation Machine flue gas integrated treatment unit and processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884868A (en) * | 2009-05-12 | 2010-11-17 | 上海乾瀚环保科技有限公司 | Method and complete equipment for purifying low-temperature plasma industrial waste gas |
| CN106196081A (en) * | 2016-07-15 | 2016-12-07 | 河南华泰粮油机械股份有限公司 | A kind of process for innoxious treating of life garbage in urban area |
-
2018
- 2018-01-31 CN CN201810097281.5A patent/CN108211626A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884868A (en) * | 2009-05-12 | 2010-11-17 | 上海乾瀚环保科技有限公司 | Method and complete equipment for purifying low-temperature plasma industrial waste gas |
| CN106196081A (en) * | 2016-07-15 | 2016-12-07 | 河南华泰粮油机械股份有限公司 | A kind of process for innoxious treating of life garbage in urban area |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647142A (en) * | 2018-11-30 | 2019-04-19 | 浙江大维高新技术股份有限公司 | A kind of Cremation Machine flue gas integrated treatment unit and processing method |
| CN109579018A (en) * | 2018-12-07 | 2019-04-05 | 朱海斌 | A kind of rural garbage pyrolyzing, gasifying and incinerating flue gas managing technique |
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Application publication date: 20180629 |