CN203469753U - Device for treatment of waste gas containing low-boiling point organic solvents - Google Patents
Device for treatment of waste gas containing low-boiling point organic solvents Download PDFInfo
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- CN203469753U CN203469753U CN201320442234.2U CN201320442234U CN203469753U CN 203469753 U CN203469753 U CN 203469753U CN 201320442234 U CN201320442234 U CN 201320442234U CN 203469753 U CN203469753 U CN 203469753U
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Abstract
The utility model discloses a device for treatment of waste gas containing low-boiling point organic solvents. The device comprises a heat exchanger, a fan, two adsorption tanks, a purified gas discharge hole, a defogger and an organic solvent recovery device, wherein the heat exchanger is connected with an air inlet of the fan, an air outlet of the fan is connected with a waste gas inlet at the bottom of the first adsorption tank, a waste gas outlet at the top of the first adsorption tank is connected with the waste gas inlet at the bottom of the second adsorption tank through the defogger, and a purified gas discharge hole is formed at the top of the second adsorption tank; organic solvent discharge holes are formed at the lower parts of the first adsorption tank and the second adsorption tank, and are connected with the organic solvent recovery device; cylinder adsorption layers are axially arranged in the adsorption tanks, isolation baffle plates are radially arranged at the middle parts of the adsorption layers, each isolation baffle plate is used for dividing an inner cavity of the corresponding adsorption tank into two regions, and the adsorption layers are activated carbon fiber layers. The low-boiling point waste gas is adsorbed twice, then up-to-standard gas is discharged, and the recovered organic solvents can be recycled.
Description
Technical field
The utility model relates to the technical field that waste gas reclaims, and specifically utilizes adsorbent to containing lower boiling waste organic solvent gas treatment system.
Background technology
Lacquer spraying technique is widely used in the industries such as container, machine-building, electrical equipment, household electrical appliances, automobile, boats and ships, furniture.Lacquer spraying waste gas is mainly formed by volatile solvent, diluent molecule and nonvolatile coating cloud molecular mixing, also have iron to print the industry fields such as cylinder, packages printing, adhesive tape production, shoemaking production and all can produce a large amount of low-boiling organic solvents such as toluene, ethyl acetate, acetone, butanone that contain, if these solvents are directly discharged in atmosphere, will cause direct or indirect adverse effect to health and environmental sanitation.The improvement method of this waste gas has condensation method, absorption process, membrane separation process, absorption method etc., and at home, condensation method is owing to being not suitable for processing the organic gas of low concentration, and needs low temperature and high pressure, and cost of equipment and operating cost are high; Absorption process is also due to the having relatively high expectations of absorbent and absorption equipment, and absorbent needs periodic replacement, and process is more complicated, and cost is higher, more difficult applying; Membrane separation process exists the rate of recovery not high, and discharge does not reach the requirement of country+environmental protection standard.What absorption method was with the most use is as adsorbent with active carbon, its surface area is high, for purifying recovery organic solvent, it is a kind of best selection, the at present most producer of active carbon adsorption is all used water vapour to carry out desorption, if Patent number is 201110311140.7 to disclose a kind of patent of invention of paint spraying organic solvent waste gas recycling device, comprise the coating cloud removal device connecting successively, blower fan, adsorption tanks, condenser and oil water separator, described coating cloud removal device comprises the air collector for temporary waste organic solvent gas, cyclone dust collectors and sack cleaner, described air collector, cyclone dust collectors and sack cleaner connect successively.
Above-mentioned patent and prior art are because investment organic waste gas treatment device needs a large amount of funds, in addition organic waste gas treatment equipment operation also needs certain operating cost, and the processing that therefore how effectively to utilize limited resource to carry out waste gas organic solvent seems particularly important.
Utility model content
In order to overcome the defect of above-mentioned prior art, it is a kind of containing lower boiling waste organic solvent gas treatment system that the utility model provides, this treatment system can make greatly to reduce the content of organics in emission gases, can also make the organic matter in waste gas be recycled as resource simultaneously, waste organic solvent gas is concentrated in knockout drum, has greatly reduced the air quantity that needs absorption.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Containing lower boiling organic solvent waste gas treatment device, comprise heat exchanger, blower fan, two adsorption tanks, Purge gas outlet, demister and organic solvent recovers, it is characterized in that: described heat exchanger is connected with the air inlet of blower fan, the air outlet of blower fan is connected with the bottom exhaust gas inlet of the first adsorption tanks, the waste gas outlet at the first adsorption tanks top is connected with the bottom exhaust gas inlet of the second adsorption tanks by demister, and the top of the second adsorption tanks is provided with Purge gas and has arranged mouth; The bottom of described the first adsorption tanks and the second adsorption tanks is equipped with organic solvent outlet, and described organic solvent outlet is all connected with organic solvent recover; In described adsorption tanks, be provided with vertically an adsorption layer, the middle part of described adsorption layer has been disposed radially isolation baffle plate, and described isolation baffle plate is divided into two regions by its inner chamber, and described adsorption layer is activated carbon fiber layers.
Described heat exchanger is cooling water heat exchanger or chilled water heat exchanger.
Described demister is gravity demister or mesh mist eliminator.
Between described tubular adsorption layer and adsorption tanks outer wall, surround gas channel, described adsorption tanks are provided with towards the water vapour inlet pipe of tubular adsorption layer end.
The utlity model has following advantage:
1, in the utility model, heat exchanger is connected with the air inlet of blower fan, the air outlet of blower fan is connected with the bottom exhaust gas inlet of the first adsorption tanks, the waste gas outlet at the first adsorption tanks top is connected with the bottom exhaust gas inlet of the second adsorption tanks by demister, and the top of the second adsorption tanks is provided with Purge gas and has arranged mouth; The bottom of described the first adsorption tanks and the second adsorption tanks is equipped with organic solvent outlet, and described organic solvent outlet is all connected with organic solvent recover; In described adsorption tanks, be provided with vertically an adsorption layer, the middle part of described adsorption layer has been disposed radially isolation baffle plate, described isolation baffle plate is divided into two regions by its inner chamber, described adsorption layer is activated carbon fiber layers, two adsorbing cylinders adopt series system on the one hand, lower boiling waste gas, through twice absorption, is discharged gas up to standard, and the recyclable recycling of organic solvent reclaiming; Make on the other hand organic exhaust gas concentrated in knockout drum, reduced the air quantity of absorption and the quantity of adsorption tanks, and then reduced floor space, reduce the investment of equipment, and then reduced cost.
2, in the utility model, heat exchanger is cooling water heat exchanger or chilled water heat exchanger, and waste organic solvent gas enters temperature before the first adsorption tanks and is down to 15 ℃ of left and right, thereby does high adsorption effect.
3, demister being set in the utility model is gravity demister or mesh mist eliminator, to absorb vaporific adsorbent or organic solvent in first class purification, makes it from the organic solvent outlet of the second adsorption tanks bottom, and passes into organic solvent recover.
4, in the utility model, between tubular adsorption layer and adsorption tanks outer wall, surround gas channel, described adsorption tanks are provided with towards the water vapour inlet pipe of tubular adsorption layer end, organic exhaust gas is from inlet channel passes into, enter the air inlet region of tubular adsorption layer inner chamber, then through tubular adsorption layer, enter gas channel, gas turns in through tubular adsorption layer the region of giving vent to anger that is positioned at tubular adsorption layer inner chamber another side by gas channel more afterwards, then cleaned gas is discharged from outlet passageway, because gas when adsorbing is double through tubular adsorption layer, adsorption efficiency improves greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure, mark 1 is heat exchanger, and 2 is blower fan, and 3-1 is that the first adsorption tanks, 3-2 are the second adsorption tanks, 4, Purge gas outlet, 5 is demister, and 6 is organic solvent recover, 7 tubular adsorption layers, 8 is isolation baffle plate, and 9 is gas channel, and 10 is organic solvent outlet.
The specific embodiment
Embodiment 1
As shown in Figure 1, containing lower boiling organic solvent waste gas treatment device, comprise heat exchanger 1, blower fan 2, two adsorption tanks 3-1,3-2, Purge gas outlet 4, demister 5 and organic solvent recover 6, their annexation is, described heat exchanger 1 is connected with the air inlet of blower fan 2, the air outlet of blower fan 2 is connected with the bottom exhaust gas inlet of the first adsorption tanks 3-1, the waste gas outlet at the first adsorption tanks 3-1 top is connected with the bottom exhaust gas inlet of the second adsorption tanks 3-2 by demister, and the top of the second adsorption tanks 3-2 is provided with Purge gas and has arranged mouth 4; The bottom of described the first adsorption tanks 3-1 and the second adsorption tanks 3-2 is equipped with organic solvent outlet 10, described organic solvent outlet 10 is all connected with organic solvent recover 6, two adsorbing cylinders adopt series system, lower boiling waste gas is through twice absorption, discharge gas up to standard, and the recyclable recycling of organic solvent reclaiming.
At adsorption tanks 3-1, be provided with vertically tubular adsorption layer 7 in 3-2, described tubular adsorption layer is activated carbon fiber layers simultaneously, and the middle part of described tubular adsorption layer 7 has been disposed radially isolation baffle plate 8, and described isolation baffle plate 8 is divided into two regions by its inner chamber.Described tubular adsorption layer 7 and adsorption tanks 3-1, between the outer wall of 3-2, surround gas channel 9, this gas channel 9 is by tubular adsorption layer outer wall, adsorption tanks 3-1, and the outer casing inner wall of 3-2 and the shrouding of being located between tubular adsorption layer end and inner tank wall surround closed interval.Described adsorption tanks 3-1,3-2 is provided with the water vapour inlet pipe (not shown) towards tubular adsorption layer end, and organic exhaust gas is concentrated in knockout drum, the air quantity of absorption and the quantity of adsorption tanks have been reduced, and then reduced floor space, reduce the investment of equipment, and then reduced cost.
Above-mentioned heat exchanger 1 is cooling water heat exchanger or chilled water heat exchanger, and waste organic solvent gas enters temperature before the first adsorption tanks and is down to 15 ℃ of left and right, thereby does high adsorption effect.
Above-mentioned demister 5 is gravity demister or mesh mist eliminator, to absorb vaporific adsorbent or organic solvent in first class purification, makes it from the organic solvent outlet of the second adsorption tanks bottom, and passes into organic solvent recover.
The operation principle of above-mentioned treatment system is: containing low boiling water-insoluble organic solvent waste gas, through cooling water heat exchanger or chilled water heat exchanger, process, the waste gas after then heat exchanger being processed passes into the first adsorption tanks; Purified gas after absorption is discharged from the top of the first adsorption tanks, and through gravity demister or mesh mist eliminator, then leads to the second adsorption tanks; The solution containing organic solvent of simultaneously discharging through the first adsorption tanks is from the organic solvent outlet of the first adsorption tanks bottom, and passes into organic solvent recover; Waste gas through first class purification is entered toward the second adsorption tanks and is entered absorption or desorption by gravity demister or mesh mist eliminator, standard compliant Purge gas is provided with Purge gas and has arranged mouth and enter atmosphere from the top of the second adsorption tanks, the solution containing organic solvent of again discharging is from the organic solvent outlet of the second adsorption tanks bottom, and passes into organic solvent recover.
Claims (4)
1. containing lower boiling organic solvent waste gas treatment device, comprise heat exchanger, blower fan, two adsorption tanks, Purge gas outlet, demister and organic solvent recovers, it is characterized in that: described heat exchanger is connected with the air inlet of blower fan, the air outlet of blower fan is connected with the bottom exhaust gas inlet of the first adsorption tanks, the waste gas outlet at the first adsorption tanks top is connected with the bottom exhaust gas inlet of the second adsorption tanks by demister, and the top of the second adsorption tanks is provided with Purge gas and has arranged mouth; The bottom of described the first adsorption tanks and the second adsorption tanks is equipped with organic solvent outlet, and described organic solvent outlet is all connected with organic solvent recover; In described adsorption tanks, be provided with vertically an adsorption layer, the middle part of described adsorption layer has been disposed radially isolation baffle plate, and described isolation baffle plate is divided into two regions by its inner chamber, and described adsorption layer is activated carbon fiber layers.
2. according to claim 1 containing lower boiling organic solvent waste gas treatment device, it is characterized in that: described heat exchanger is cooling water heat exchanger or chilled water heat exchanger.
3. according to claim 1 containing lower boiling organic solvent waste gas treatment device, it is characterized in that: described demister is gravity demister or mesh mist eliminator.
4. according to claim 1 containing lower boiling organic solvent waste gas treatment device, it is characterized in that: between described tubular adsorption layer and adsorption tanks outer wall, surround gas channel, described adsorption tanks are provided with towards the water vapour inlet pipe of tubular adsorption layer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442234.2U CN203469753U (en) | 2013-07-24 | 2013-07-24 | Device for treatment of waste gas containing low-boiling point organic solvents |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442234.2U CN203469753U (en) | 2013-07-24 | 2013-07-24 | Device for treatment of waste gas containing low-boiling point organic solvents |
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| CN203469753U true CN203469753U (en) | 2014-03-12 |
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| CN201320442234.2U Expired - Fee Related CN203469753U (en) | 2013-07-24 | 2013-07-24 | Device for treatment of waste gas containing low-boiling point organic solvents |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115337750A (en) * | 2022-09-01 | 2022-11-15 | 苏州蓝贝环保有限公司 | A adsorb treatment facility that is used for big amount of wind volatile organic compounds dichloromethane to reach standard to discharge |
-
2013
- 2013-07-24 CN CN201320442234.2U patent/CN203469753U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115337750A (en) * | 2022-09-01 | 2022-11-15 | 苏州蓝贝环保有限公司 | A adsorb treatment facility that is used for big amount of wind volatile organic compounds dichloromethane to reach standard to discharge |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20210724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |