CN101791516B - Waste gas central treating system - Google Patents
Waste gas central treating system Download PDFInfo
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- CN101791516B CN101791516B CN2010101439836A CN201010143983A CN101791516B CN 101791516 B CN101791516 B CN 101791516B CN 2010101439836 A CN2010101439836 A CN 2010101439836A CN 201010143983 A CN201010143983 A CN 201010143983A CN 101791516 B CN101791516 B CN 101791516B
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- waste gas
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- cyclone separating
- air inlet
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Abstract
The invention relates to the waste gas treating field of electroplating industry, in particular to a waste gas treating system. The waste gas treating system comprises a gas scrubbing tower. The front end of the gas scrubbing tower is provided with a cyclone separating tower, an air inlet part of which is provided with a plurality of gas inlet pipelines, and each gas inlet pipeline is respectively provided with a suction fan and an air suction cover. By taking the air inlet part of the cyclone separating tower as a connecting part, the gas inlet pipelines are counterclockwise arranged in the circumferential tangential direction of the air inlet pipeline. The gas inlet pipeline is respectively provided with a check baffle plate. At least one gas inlet pipeline at the front end of the cyclone separating tower is provided with equipment for pretreating special waste gas. The cyclone separating tower is provided with a cooling device. The system is provided with switches for flexibly adjusting the suction fans according to the treating requirement, therefore, the operation cost can be controlled, and the waste gas of different sources and properties can be flexibly treated; the gas inlet temperature of the gas scrubbing tower is decreased, the Reynolds number is increased, the acid removing effect of the gas scrubbing tower is enhanced, the usable waste acid can be recycled, and the resources are sufficiently saved.
Description
Technical field
The present invention relates to the technical field of waste gas treatment of electroplating industry, specifically be meant a kind of method that focuses on of waste gas and be used for the system of exhaust-gas treatment.
Background technology
Electroplate Factory's processing procedure often uses high-volatile hydrochloric acid, fluoric acid, nitric acid and produces acid gas, acid mist, makes workshop acid smelly hard to bear, and is totally unfavorable to prevention and cure of pollution, industry security, plant maintenance.The traditional scrubbing tower of bleeding of general use is handled waste gas (shown in figure one) in the industry; It adopts the scrubbing tower 29 of bleeding; Dispose one and take out air-introduced machine 27; Take out air-introduced machine and lead to source of the gas through air inlet pipeline 24,26, the air inlet end is provided with draft hood 23, and this treatment facility can be received certain effect really.Yet the scrubbing tower of bleeding with traditional is handled waste gas; Still have following shortcoming to need to solve: 1) traditional scrubbing tower of bleeding all only is equipped with the single air-introduced machine of taking out; Difficult size of regulating air quantity, thus when using this to take out air-introduced machine all be standard-sized sheet or complete shut-down basically, be unfavorable for energy conservation; 2) owing to the characteristic of taking out air-introduced machine is: the ability (blast 20～50mm water column pressure reduction) that pushes wind is far longer than the ability (blast 2～10mm water column pressure reduction) of drawing of taking out; In order to satisfy the effect of exhausting amount; Usually all must increase the air inducing caliber promptly takes out horsepower number of air-introduced machine and avoids crushing too big; This not only makes the cost of installation improve, and in the regular job, energy use efficiency is also bad; 3) use a scrubbing tower to handle the waste gas of separate sources and character simultaneously; This makes the design of scrubbing tower bear pressure, because design the time must be satisfied maximum processing capability, and after completing; Just can not increase demand of processing quantity (amplification draft hood), this often causes surdimensionnement.Therefore, be necessary to design a kind of exhaust deacidification facility, can make electroplating workshop measure the adjusting running cost on demand, and can flexible processing separate sources and the waste gas of character, the deacidification effect improved as far as possible.
Summary of the invention
The problem that the present invention need solve provides a kind ofly can measure the adjusting running cost, elasticized separate sources and character waste gas, the waste gas centralized processing system that effectively economizes on resources on demand.
For addressing the above problem; The technical scheme that the present invention takes is: a kind of waste gas centralized processing system is provided, comprises scrubbing tower, said scrubbing tower front end is provided with cyclone separating tower; Said cyclone separating tower inlet section is provided with a plurality of air inlet pipelines, and each air inlet pipeline all is provided with takes out air-introduced machine.
Said air inlet pipeline with the cyclone separating tower inlet section be junction along the inlet section pipeline tangent to periphery direction arrange counterclockwise.
Be equipped with on the said air inlet pipeline and be used to prevent that gas is from pipeline adverse current to the baffle plate of taking out air-introduced machine or non-return retaining case.
At least one road is provided with and is used for carrying out pretreated pre-processing device to special character waste gas in the said cyclone separating tower front end air inlet pipeline; Said pre-processing device comprises the scrubbing tower that is used to spray urea liquid.
The said air-introduced machine of taking out all is furnished with draught hood; Said cyclone separating tower is furnished with cooling device.
Waste gas centralized processing system according to the invention is applicable to the big processing occasion of capacity change; Its beneficial effect is: said system is provided with can each takes out the switch of air-introduced machine according to the processing demands flexible adjustment; Make running cost controlled, and can flexible processing separate sources and the waste gas of character; Can reduce the scrubbing tower intake air temperature, improve Reynolds number, improve scrubbing tower deacidification effect, and can reclaim useful spent acid, fully economize on resources.
Description of drawings
Fig. 1 is for being used for the scrubbing tower system architecture sketch map of exhaust-gas treatment in the prior art;
Fig. 2 is a waste gas centralized processing system structural representation according to the invention;
Fig. 3 is the air inlet pipeline according to the invention sketch map of arranging.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
As shown in Figure 2, system according to the invention is provided with a plurality of air inlet branch roads, shown in label 13 among the figure; Air-introduced machine is taken out in each one of air inlet branch road air inlet configuration; Like label 2, to bleed respectively with corresponding separate sources gas of different nature, each is taken out air-introduced machine 2 and all disposes draft hood 23.And pre-processing device 22 is set carrying out first processing to special waste gas in taking out air-introduced machine rear end air inlet branch road individually, and then improve final exhaust-gas treatment effect.In for example embodiment illustrated in fig. 2,, and increased urea spray scrubbing tower it has been carried out preliminary treatment taking out the air-introduced machine rear end accordingly to nitric acid waste gas.
The liquid caustic soda scrubbing tower 9 of sending into the rear end after the waste gas of each branch road need be assembled removes spent acid, and the present invention adopts cyclone separating tower 4 to be used for assembling to gather each branch road waste gas.Said system is provided with a plurality of air inlet branch roads at the cyclone separating tower air intake position of band cooling, is concatenated into the filling scrubbing tower at last, accomplishes exhaust-gas treatment work.Said air inlet pipeline with the cyclone separating tower inlet section be junction along the inlet section pipeline circumference 21 tangential directions arrange counterclockwise, as shown in Figure 3, effectively avoided some other take out air-introduced machine and send and press not enough and certain branch road waste gas is plugged can't see processing off.
Among the embodiment; Because each is taken out air-introduced machine 2 and all disposes draft hood 23; Draft hood is with to take out air-introduced machine approaching like this; The power of air-supply is to utilize the back pressure section but not the exhausting section, so can need horsepower number that amplifies the size of pipeline and take out air-introduced machine because of considering crushing, significantly lowers the manufacturing expense of pipeline.
Each air inlet branch road extends to diverse location respectively, and the space is enough, so install non-return baffle plate 3 at the entrance point of each branch road waste gas, avoids some to take out air-introduced machine 2 and is shutting down the not time spent, and all the other are gripped road waste gas refluence and go out.
Gas temperature is low more, viscosity is low more, Reynolds number is high more, be beneficial to deacidification effect thereafter more; Therefore the present invention is provided with cooling device 14 in the cyclone separating tower of assembling equipment as gas; This cooling device adopts spray equipment to spray into the cooling water droplet among the embodiment; To reduce EGT, viscosity etc., reach aforesaid target, strengthen the deacidification effect.In addition, in cyclone separating tower whirlwind portion 41, waste gas is in pressurized state, sprays into the cooling water droplet and can impel gas to condense near dew point, through cyclonic separation, can bear local deacidification effect, and spent acid uses through collecting regeneration.
Be that certain factory's electroplating workshop has exhaust system now after removing reconstruction, two system's operating position tables of comparisons below:
| Original system | System according to the invention | |
| Main air inlet pipeline size | 750mm | 375mm |
| Main scrubbing tower size | 20m3 | 20m3 |
| Main air blower horsepower | 50Hp | -- |
| Each draught hood blower fan horsepower | -- | 5Hpx4 10Hpx3 |
| NOX scrubbing tower size | -- | 5m3 |
| Exhaust air rate | 600CMM | 50～650CMM |
| Power consumption | 9750kwhr/ every month | 4300kwhr/ every month |
| The liquid caustic soda consumption | 1.4Ton/ every month | 0.85Ton/ every month |
| The workshop acid mist | 0.0035eqmol/m3 | 0.0012eqmol/m3 |
| The exhaust acid content | 0.0002eqmol/m3 | 0.0001eqmol/m3 |
| Exhaust NOX content | 733ppm | 24ppm |
| The spent acid collecting amount | -- | 41 liters |
Can calculate via above data, system according to the invention and original system contrast, power consumption decline 55%, liquid caustic soda consumption decline 40%, NOX discharging decline 97%, exhaust quality improve 50%.
Need to prove, more than be merely preferred implementation of the present invention, conceive under the prerequisite not breaking away from the present invention, to its any minor variations of doing and be equal to replacement, all belong to protection scope of the present invention.
Claims (6)
1. the waste gas centralized processing system comprises scrubbing tower, it is characterized in that, said scrubbing tower front end is provided with cyclone separating tower, and said cyclone separating tower inlet section is provided with a plurality of air inlet pipelines, and each air inlet pipeline all is provided with takes out air-introduced machine;
Said air inlet pipeline with the cyclone separating tower inlet section be junction along the inlet section pipeline tangent to periphery direction arrange counterclockwise.
2. waste gas centralized processing system according to claim 1 is characterized in that, is equipped with on the said air inlet pipeline to be used to prevent that gas is from pipeline adverse current to the baffle plate of taking out air-introduced machine or non-return retaining case.
3. waste gas centralized processing system according to claim 2 is characterized in that, at least one road is provided with and is used for carrying out pretreated pre-processing device to special character waste gas in the said cyclone separating tower front end air inlet pipeline.
4. waste gas centralized processing system according to claim 3 is characterized in that said pre-processing device comprises the scrubbing tower that sprays urea liquid.
5. waste gas centralized processing system according to claim 4 is characterized in that, the said air-introduced machine of taking out all is furnished with draught hood.
6. waste gas centralized processing system according to claim 5 is characterized in that said cyclone separating tower is furnished with cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101439836A CN101791516B (en) | 2010-04-06 | 2010-04-06 | Waste gas central treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101439836A CN101791516B (en) | 2010-04-06 | 2010-04-06 | Waste gas central treating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101791516A CN101791516A (en) | 2010-08-04 |
| CN101791516B true CN101791516B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101439836A Expired - Fee Related CN101791516B (en) | 2010-04-06 | 2010-04-06 | Waste gas central treating system |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148653A1 (en) * | 2009-06-26 | 2010-12-29 | Shanghai Jiao Tong University | Polymer vesicles of asymmetric membrane |
| CN102330141B (en) * | 2011-06-30 | 2013-11-06 | 无锡出新环保设备有限公司 | Plating waste gas treatment device |
| CN102430597A (en) * | 2011-09-21 | 2012-05-02 | 无锡市创威冷轧有限公司 | Alkaline mist absorption device for production of cold rolled steel |
| FI9520U1 (en) * | 2011-12-01 | 2012-01-11 | Outotec Oyj | Plant for treating exhaust gas originating from a source which forms acid mist and contains acid mist |
| CN104109898A (en) * | 2014-07-08 | 2014-10-22 | 德清县浙北通讯器材有限公司 | Waste gas treatment device of pickling or electroplating equipment |
| CN105413408B (en) * | 2015-12-28 | 2018-03-30 | 刘永江 | Recycled in a kind of exhaust gas centralized to reduce the system and method for air pollution |
| CN114642943A (en) * | 2020-12-18 | 2022-06-21 | 陕西青朗万城环保科技有限公司 | Flue gas treatment equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059167U (en) * | 1989-04-18 | 1990-07-11 | 武汉汽车配件厂 | Chromic acid waste gas recovering device for washing chromic spray net grate system |
| JP2543013B2 (en) * | 1994-06-21 | 1996-10-16 | 章清 元上 | Gas processing apparatus and method |
| TW421607B (en) * | 1997-10-06 | 2001-02-11 | Hitachi Shipbuilding Eng Co | Process and apparatus for removing acid gases from exhaust gases |
| CN201347466Y (en) * | 2009-01-22 | 2009-11-18 | 上海科德轧辊表面处理有限公司 | Electroplating exhaust purification processing device |
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| CN101791516A (en) | 2010-08-04 |
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Granted publication date: 20120111 Termination date: 20140406 |