CN100402926C - Method and equipment for purifying tail gas generated by burnning garbage - Google Patents
Method and equipment for purifying tail gas generated by burnning garbage Download PDFInfo
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- CN100402926C CN100402926C CNB2004101018583A CN200410101858A CN100402926C CN 100402926 C CN100402926 C CN 100402926C CN B2004101018583 A CNB2004101018583 A CN B2004101018583A CN 200410101858 A CN200410101858 A CN 200410101858A CN 100402926 C CN100402926 C CN 100402926C
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- cooling tower
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- flue gas
- sack cleaner
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Abstract
The present invention relates to a purifying method for tail gas generated by burning garbage and a device thereof, which relates to the technical field of purification and dust removal of the tail gas of a burning boiler. The device of the present invention comprises a cooling tower and a bag type dust remover. The device of the present invention is characterized in that a fume inlet of the cooling tower is arranged on the top end of the cooling tower, a plurality of groups of water spouts opposite to a fume flow direction are arranged in the cooling tower, and a Z-shaped flue is connected between the bottom of the cooling tower and the upper part of the bag type dust remover; a lime powder inlet is arranged on the bottom section of the Z-shaped flue, an iron flyash inlet is arranged on the middle section of the Z-shaped flue, and an activated carbon inlet is arranged on the upper section of the Z-shaped flue; a filtering material layer is arranged in the bag type dust remover, and a gas purifying outlet is arranged on the side upper part of the bag type dust remover. With the method of the present invention, the processing step is simple, the effect on purification for the acid gas and the flyash of the tail gas is obvious, and fine dioxin particles generated by burning garbage can be effectively removed; the device using the method has the advantages of compact structure, small occupation area and low investment and running cost.
Description
Technical field
The present invention relates to burning boiler tail gas clean-up and dedusting technology field, relate in particular to the adsorbate removal methods and the device thereof of the depickling, pellet, dioxin etc. of garbage incinerating tail gas.
Background technology
Atmosphere pollution is the focus of world many countries environmental protection always, and the flue gas desulfurization technique that various countries successively develop has reached kind more than 200.But, can commercial Application have only kind more than ten.Tail gas for the waste incineration generation, except that containing conventional coal-fired flue-gas pollutant such as nitrogen oxide, oxysulfide, fine grained and heavy metal, also contain harmful substances such as more substantial simple substance chlorine, hydrogen chloride, dioxin, conventional desulfurization and dedusting technology can not satisfy the strict purification of garbage incinerating tail gas requirement.Existing external garbage incinerating tail gas purification techniques mostly adopts wet method, as U.S. Pat 4789532 are the sour gas that adopt in the conventional spray lime slurry absorption tail gas, as sulfur dioxide, hydrogen chloride, simple substance chlorine etc., behind reactor, connect the sack cleaner dedusting then.Though said method can be removed sour gas and flying dust in the tail gas, exist equipment investment and operating cost height, floor space big, can not effectively remove the fine grain problem of dioxin that waste incineration produces.
Summary of the invention
At above-mentioned problems of the prior art, the purpose of this invention is to provide a kind of purification method and device thereof of garbage incinerating tail gas.Use this method, can make processing step simply, not only the effect of sour gas and flying dust is remarkable in the cleaning of off-gas, more outstanding is effectively to remove the dioxin fine grained that waste incineration produces.For implementing the device of this method, its compact conformation, floor space is little, the investment operating cost is low.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind of purification method of garbage incinerating tail gas, it comprises uses cooling tower and sack cleaner, the steps include:
1) flue gas that incinerator is discharged enters in the cooling tower from the last end entrance of cooling tower, and the waters district through being formed by the water spout of multilayer, contrary drift layout in the cooling tower descends flue-gas temperature rapidly
2) it is interconnective with sack cleaner top that flue gas enters the cooling tower bottom
Type flue bottom stage contacts with the lime powder and fully mixes by the eddy current at flue turning, absorbs excessive moisture in the flue gas, removes acidic gas in flue gas.
3) flue gas enters
Type flue middle part mixes with iron ash, conducts heat with mass transfer fully, removes the pellet in the flue gas.
4) flue gas enters
Type flue upper segment is mixed with active carbon, removes the dioxin-like chemical that exists in the flue gas.
5) flue gas enters sack cleaner and adheres to form within it the filter material layer and remove the agent layer, further with flue gas in primary particulate, the second particle thing presoma, the dioxin-like chemical reaction that are not removed, flue gas after being purified is guided the exhanst gas outlet discharging into by air-introduced machine.
Realize the device of the purification method of above-mentioned garbage incinerating tail gas, it comprises cooling tower and sack cleaner.Its design feature is that the gas approach of described cooling tower places the top of cooling tower.Many groups water spouts opposite with flue gas flow direction are set in the cooling tower, are connected between the bottom of cooling tower and the top of described sack cleaner
The type flue.
The bottom stage of type flue is provided with lime powder inlet,
The middle part of type flue is provided with the iron ash inlet,
The upper segment of type flue is provided with the active carbon inlet.Be equipped with filter material layer in the sack cleaner, the side top of sack cleaner is equipped with clean gas outlet.
In said apparatus, two groups of water spouts are set in the described cooling tower.
In said apparatus, described filter material layer adopts coated filter material.
The present invention compared with prior art has the following advantages and good effect:
(1) adopts many groups water spout opposite in the cooling tower, can carry out chilling, reduce flue-gas temperature fast flue gas with flue gas flow direction.
(2) exist
Segmentation is provided with a plurality of agent entrances that remove on the type flue, removes the straying quatity of agent and sprays into component by adjusting, enters sack cleaner after the flow velocity of control flue gas makes it and removes that agent is even and mix.
(3) use
The flue of type is controlled at flue gas flow rate in certain scope, makes the agent powder that removes that sprays into evenly mix with flue gas, fully react.
(4) agent that removes that sprays into comprises lime powder, iron ash and active carbon, they with and smoke reaction, not only can remove acidic gas in flue gas, dioxin-like chemical, simultaneously have the cooperation-removal effect for pellet PM10 and PM2.5 etc.
(5) make full use of the structure and the dedusting characteristics of sack cleaner, for the gas that removes in agent and the flue gas further reacts place and the matrix that provides good.
(6) adopt the reaction medium of coated filter material as sack cleaner.The structure of coated filter material and character help the carrying out with correlated response of adhering to of adsorbent, have improved removal efficiency greatly.
(7) apparatus of the present invention compact conformation, floor space is little, stable, cost is low.Successful realization the cooperation-removal of multiple pollutant and presoma thereof and equipment thereof integrated.
The present invention will be further described below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Accompanying drawing is the structure principle chart of apparatus of the present invention.
The specific embodiment
Referring to accompanying drawing, apparatus of the present invention comprise cooling tower 2 and sack cleaner 8.The gas approach 1 of cooling tower 2 places the top of cooling tower 2, and two groups of water spouts opposite with flue gas flow direction 3 are set in the cooling tower 2, is connected between the top of the bottom of cooling tower 2 and described sack cleaner 8
Type flue 4.
The bottom stage of type flue 4 is provided with lime powder inlet 5,
The middle part of type flue 4 is provided with iron ash inlet 6,
The upper segment of type flue 4 is provided with active carbon inlet 7.Be equipped with the filter material layer 9 that adopts coated filter material in the sack cleaner 8, the side top of sack cleaner 8 is equipped with clean gas outlet 10.
During apparatus of the present invention operation, the steps include:
1) flue gas that incinerator is discharged enters in the cooling tower 2 from the gas approach 1 of cooling tower 2 upper ends, and the waters district through being formed by the water spout 3 of two-layer, contrary drift layout in the cooling tower 2 descends flue-gas temperature rapidly.
2) flue gas enter cooling tower 2 bottoms and sack cleaner 8 tops interconnective
Type flue 4 bottom stage with contact from the lime powder inlet 5 lime powders that spray into and fully mixes by the eddy current at flue turning, the excessive moisture in the absorption flue gas, remove acidic gas in flue gas.
3) flue gas enters
Type flue 4 middle parts mix with 6 iron ash that spray into that enter the mouth from iron ash, conduct heat with mass transfer fully, remove the pellet in the flue gas.
4) flue gas enters
Type flue 4 upper segment are mixed with 7 active carbons that spray into that enter the mouth from active carbon, remove the dioxin-like chemical that exists in the flue gas.
5) flue gas enters sack cleaner 8 and adheres to form within it the filter material layer 9 and remove the agent layer, further with flue gas in primary particulate, the second particle thing presoma, the dioxin-like chemical reaction that are not removed, flue gas after being purified is guided clean gas outlet 10 dischargings into by air-introduced machine.
The desulfurization, nitric efficiency that experimental results show that this device are greater than 70%, for organic removal efficiencies such as heavy metal, polycyclic aromatic hydrocarbons greater than 90%, the dioxin-like chemical removal efficiency can reach more than 95% for PM10 and its removal efficiency of PM2.5 level pellet greater than 90%.Can satisfy environmental protection index requirement both at home and abroad at present.
Claims (4)
1. the purification method of a garbage incinerating tail gas, it comprises uses cooling tower and sack cleaner, the steps include:
1) flue gas that incinerator is discharged enters in the cooling tower from the last end entrance of cooling tower, and the waters district through being formed by the water spout of multilayer, contrary drift layout in the cooling tower descends flue-gas temperature rapidly;
2) it is interconnective with sack cleaner top that flue gas enters the cooling tower bottom
Type flue bottom stage contacts with the lime powder and fully mixes by the eddy current at flue turning, absorbs excessive moisture in the flue gas, removes acidic gas in flue gas;
3) flue gas enters
Type flue middle part mixes with iron ash, conducts heat with mass transfer fully, removes the pellet in the flue gas;
4) flue gas enters
Type flue upper segment is mixed with active carbon, removes the dioxin-like chemical that exists in the flue gas;
5) flue gas enters sack cleaner and adheres to form within it the filter material layer and remove the agent layer, further with flue gas in primary particulate, the second particle thing presoma, the dioxin-like chemical reaction that are not removed, flue gas after being purified is guided the exhanst gas outlet discharging into by air-introduced machine.
2. realize the device of the purification method of garbage incinerating tail gas as claimed in claim 1, it comprises cooling tower (2) and sack cleaner (8), it is characterized in that, the gas approach (1) of described cooling tower (2) places the top of cooling tower (2), many groups water spouts (3) opposite with flue gas flow direction are set in the cooling tower (2), are connected between the bottom of cooling tower (2) and the top of described sack cleaner (8)
Type flue (4),
The bottom stage of type flue (4) is provided with lime powder inlet (5),
The middle part of type flue (4) is provided with iron ash inlet (6),
The upper segment of type flue (4) is provided with active carbon inlet (7), is equipped with filter material layer (9) in the sack cleaner (8), and the side top of sack cleaner (8) is equipped with clean gas outlet (10).
3. according to the described device of claim 2, it is characterized in that, two groups of water spouts (3) are set in the described cooling tower (2).
4. according to claim 2 or 3 described devices, it is characterized in that described filter material layer (9) adopts coated filter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101018583A CN100402926C (en) | 2004-12-29 | 2004-12-29 | Method and equipment for purifying tail gas generated by burnning garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101018583A CN100402926C (en) | 2004-12-29 | 2004-12-29 | Method and equipment for purifying tail gas generated by burnning garbage |
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| Publication Number | Publication Date |
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| CN1796869A CN1796869A (en) | 2006-07-05 |
| CN100402926C true CN100402926C (en) | 2008-07-16 |
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| CNB2004101018583A Active CN100402926C (en) | 2004-12-29 | 2004-12-29 | Method and equipment for purifying tail gas generated by burnning garbage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915423A (en) * | 2010-08-26 | 2010-12-15 | 北京中科通用能源环保有限责任公司 | Refuse burning system and method with functions of deacidifying flue gas and retarding dioxin generation |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500198A (en) * | 2011-11-10 | 2012-06-20 | 南京圣诺热管有限公司 | Device for reducing exhausted flue humidity of wet desulfurization system, and method thereof |
| CN107469485A (en) * | 2017-09-11 | 2017-12-15 | 郭玉连 | A kind of method for industrial waste gas processing |
| CN109351186A (en) * | 2018-12-17 | 2019-02-19 | 郴州市泰益表面涂层技术有限公司 | The degradation treatment system of dioxin in life medical refuse burning exhaust gas |
| CN109915841A (en) * | 2019-03-04 | 2019-06-21 | 广东粤清环境科技有限公司 | A kind of minimizing technology of organic exhaust gas |
| CN112076620A (en) * | 2020-09-18 | 2020-12-15 | 广东风和洁净工程有限公司 | Dry desulfurization and denitrification system adopting hollow fiber membrane dust collector |
| CN113266837A (en) * | 2021-04-06 | 2021-08-17 | 常州大学 | Treatment method of chlorine-containing organic waste gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425117A1 (en) * | 1994-07-15 | 1996-01-25 | Rheinische Braunkohlenw Ag | Process and reactor assembly for incineration of de-watered industrial sludge |
| CN2283188Y (en) * | 1996-09-24 | 1998-06-03 | 中国科学院工程热物理研究所 | Refuse incinerator with circulating fluidized bed |
| JP2001190920A (en) * | 2000-01-12 | 2001-07-17 | Takuma Co Ltd | Method and apparatus for treating exhaust gas |
| CN1114467C (en) * | 2000-12-15 | 2003-07-16 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN2760407Y (en) * | 2004-12-29 | 2006-02-22 | 清华大学 | A tail gas purifier for refuse burning |
-
2004
- 2004-12-29 CN CNB2004101018583A patent/CN100402926C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425117A1 (en) * | 1994-07-15 | 1996-01-25 | Rheinische Braunkohlenw Ag | Process and reactor assembly for incineration of de-watered industrial sludge |
| CN2283188Y (en) * | 1996-09-24 | 1998-06-03 | 中国科学院工程热物理研究所 | Refuse incinerator with circulating fluidized bed |
| JP2001190920A (en) * | 2000-01-12 | 2001-07-17 | Takuma Co Ltd | Method and apparatus for treating exhaust gas |
| CN1114467C (en) * | 2000-12-15 | 2003-07-16 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN2760407Y (en) * | 2004-12-29 | 2006-02-22 | 清华大学 | A tail gas purifier for refuse burning |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915423A (en) * | 2010-08-26 | 2010-12-15 | 北京中科通用能源环保有限责任公司 | Refuse burning system and method with functions of deacidifying flue gas and retarding dioxin generation |
| CN101915423B (en) * | 2010-08-26 | 2012-10-31 | 北京中科通用能源环保有限责任公司 | Refuse burning system and method with functions of deacidifying flue gas and retarding dioxin generation |
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| CN1796869A (en) | 2006-07-05 |
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