CN203220849U - Synthetic leather exhaust gas recovery device - Google Patents
Synthetic leather exhaust gas recovery device Download PDFInfo
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- CN203220849U CN203220849U CN 201320281467 CN201320281467U CN203220849U CN 203220849 U CN203220849 U CN 203220849U CN 201320281467 CN201320281467 CN 201320281467 CN 201320281467 U CN201320281467 U CN 201320281467U CN 203220849 U CN203220849 U CN 203220849U
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- synthetic leather
- waste gas
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Abstract
The utility model relates to a synthetic leather exhaust gas recovery device which comprises a spraying chamber, a first padding layer, a second padding layer, a third padding layer, a clean water absorbing layer and an exhaust port in sequence from bottom to top. The upper end of each padding layer and the upper end of the clean water absorbing layer are respectively provided with a water distributor. A gas and liquid separator is arranged between the clean water absorbing layer and the exhaust port. The bottom end of the second padding layer and the bottom of the third padding layer are respectively provided with a liquid collector. A liquid outlet of each liquid collector is communicated with a water inlet of one water distributor so that a second circulation loop and a third circulation loop can be formed. A liquid outlet of the spraying chamber is communicated with a water inlet of one water distributor so that a first circulation loop can be formed. When the synthetic leather exhaust gas recovery device works, after exhaust gas is absorbed in a spraying mode for once and absorbed in a circulating mode for three times, most of dimethylformamide in the exhaust gas can be absorbed, clean water absorption is conducted for once, the exhaust gas can be further recovered, therefore, the recovery rate of dimethylformamide can be greatly improved, resources are saved, and cost is reduced.
Description
Technical field
The utility model relates to a kind of discarded object retracting device, is specifically related to a kind of waste gas recovering device that is applied to synthetic leather technology.
Background technology
One of primary raw material of synthetic leather is polyurethane resin, wherein contains a large amount of organic solvent dimethyl formamides.Usually contain a large amount of dimethyl formamides in the waste gas that in the synthetic leather production process, produces, if directly dimethyl formamide is disposed in the external environment, can damage by ecological environment to external world, the price of dimethyl formamide is relatively more expensive usually in the market simultaneously, no matter all are from enterprise or the angle analysis of environmental protection, all are necessary the dimethyl formamide recycling in the waste gas.
And the dimethyl formamide absorption tower of existing synthetic leather waste gas recovering device generally is made up of spray section, filler absorber portion, demist layer and exhaust section, yet the absorption liquid in the packing layer absorber portion contains the solution of a spot of dimethyl formamide, make and be difficult to the dimethyl formamide in the waste gas is thoroughly absorbed, cause absorptivity low, cause waste.
The utility model content
At the deficiencies in the prior art, the purpose of this utility model is for a kind of synthetic leather waste gas recovering device of high-absorbility is provided.
For achieving the above object, the utility model adopts following technical scheme:
A kind of synthetic leather waste gas recovering device comprises setting gradually ground spray chamber, first packing layer, second packing layer, the 3rd packing layer, a clear water absorbed layer and an exhaust outlet from the bottom up; The upper end of described three packing layers and clear water absorbed layer is provided with a water-locator, and each water-locator all offers an inlet; Between described clear water absorbed layer and the exhaust outlet gas-liquid separator is set; The lower end of described second packing layer, the 3rd packing layer arranges a liquid trap respectively; All offer liquid outlet on described spray chamber and each liquid trap; A liquid outlet of described spray chamber is communicated with the inlet of the water-locator of described first packing layer upper end, forms first closed circuit; The liquid outlet of the liquid trap of the described second packing layer lower end is communicated with the water inlet of the water-locator of second packing layer upper end, forms second closed circuit; The liquid outlet of the liquid trap of the 3rd packing layer lower end is communicated with the water inlet of the water-locator of the 3rd packing layer upper end, forms the 3rd closed circuit.
Realize that the purpose of this utility model can also reach by taking following technical scheme:
Realize that a kind of embodiment of the present utility model is: the water inlet of the water-locator of described clear water absorbed layer upper end is communicated with extraneous water supply installation, and the lower end of this water-locator arranges a packing layer regularly.
Realize that a kind of embodiment of the present utility model is: a pipeline sight glass is set on described second closed circuit.
Realize that a kind of embodiment of the present utility model is: a pipeline sight glass is set on described the 3rd closed circuit.
Realize that a kind of embodiment of the present utility model is: this synthetic leather waste gas recovering device internal diameter is 2.2 meters to 2.4 meters, and height is 15 meters to 17 meters.
Realize that a kind of embodiment of the present utility model is: a spray thrower is set in the described spray chamber.
Realize that a kind of embodiment of the present utility model is: described spray thrower is the nozzle-type spray thrower.
The beneficial effects of the utility model are:
Synthetic leather waste gas recovering device described in the utility model mainly is made up of a spray chamber, three packing layers and a clear water absorbed layer, form the tactic pattern of a spray three circulations, during work, waste gas is once sprayed after absorption, three circulations absorb, can reach the most recycling of the dimethyl formamide in the waste gas, carrying out a clear water then absorbs, can further reclaim the dimethyl formamide in the waste gas, thereby can improve the rate of recovery of dimethyl formamide greatly, economize on resources, reduce production costs.
Description of drawings
Fig. 1 is the synthetic leather waste gas recovering device structural representation of embodiment in the utility model.
The specific embodiment
Below, by reference to the accompanying drawings and the specific embodiment, the utility model is described further:
Specific embodiment:
With reference to Fig. 1, the internal diameter of the described synthetic leather waste gas recovering device 100 of present embodiment is 2.2 meters to 2.4 meters, height is 15 meters to 17 meters, and its inside comprises spray chamber 10, first packing layer 20, second packing layer 30, the 3rd packing layer 40, a clear water absorbed layer 50 and an exhaust outlet 60 that sets gradually from the bottom up.The upper end of above-mentioned three packing layers and clear water absorbed layer 50 is provided with a water-locator, and each water-locator is provided with an inlet.
Described spray chamber 10 is used for waste gas is sprayed absorption, comprises a spraying box 11 and a supply tank 12, and spraying box 11 is positioned at the upper end of supply tank 12.Described spraying box 11 outsides offer an exhaust gas entrance 13, and this exhaust gas entrance 13 can be communicated with the blowing mouth of a blower fan 70.Be provided with a nozzle-type spray thrower 14 between described exhaust gas entrance 13 and first packing layer 20, the inlet of this spray thrower 14 is communicated with described supply tank 12, is used for carrying the water of coming to form the water smoke shape supply tank 12 and sprays in the spraying box 11.
There are two liquid outlets the side of described supply tank 12, and one of them liquid outlet is communicated with described spraying box 11, and another liquid outlet can be divided into two tributaries.
The upper and lower surface of described first packing layer 20, second packing layer 30 and the 3rd packing layer 40 is fixedly arranged in the synthetic leather waste gas recovering device 100 from the bottom up successively by a gripper shoe respectively, and is positioned at the upper end of described spray chamber 10.The upper end of described first packing layer 20, second packing layer 30, the 3rd packing layer 40 arranges first water-locator 21, second water-locator 31, the 3rd water-locator 41 respectively.The bottom of described second packing layer 30, the 3rd packing layer 40 arranges first liquid trap 32, second liquid trap 42 respectively; And the bottom of each liquid trap all offers liquid outlet, and each liquid outlet all can arrange two tributaries.
But all offer the hole that some supplied gas are passed on described first packing layer 20 and the gripper shoe.Described first packing layer 20 is made for the orifice plate filler, and this filler can help to improve the contact area of gas and liquid.
First water-locator 21 is arranged at the upper end of described first packing layer 20, and a tributary that has on the water inlet of this first water-locator 21 and the supply tank 12 in the liquid outlet in two tributaries is communicated with, and forms first closed circuit 22.Absorption liquid can enter into first closed circuit 22 by supply tank 12, falls into first packing layer, 20 interior dimethyl formamides to waste gas by first water-locator 21 and carries out the circulation absorption first time, and then fall in the supply tank 12.
Described second packing layer 30 and the 3rd packing layer 40 are made by the cancellated web material of some layers, and the permeability of this material can guarantee fully contacting of gas and liquid.Described second water-locator 31 is communicated with a tributary of first liquid trap 32, second liquid trap, 42 liquid outlets respectively with the inlet of the 3rd water-locator 41, and forms second closed circuit 33 and the 3rd closed circuit 43; Another tributary all is communicated with the fluid collection device in the external world.
On described second closed circuit 33 and the 3rd closed circuit 43 a pipeline sight glass 44 is set, described pipeline sight glass 44 can be used for detecting the content that absorption liquid on the corresponding circuit includes dimethyl formamide.
Described clear water absorbed layer 50 comprises the 4th packing layer 51 and the 4th water-locator 52.The upper and lower surface of described the 4th packing layer 51 is fixedly arranged at the upper end of the 3rd water-locator 41 respectively by a gripper shoe, and the lower end of the 4th water-locator 52.
Between described the 4th water-locator 52 and the exhaust outlet 60 gas-liquid separator 61 is set; Described gas-liquid separator 61 can separate the liquid that comprises in the gas, and liquid is retained in the synthetic leather waste gas recovering device 100.
Operation principle of the present utility model:
After the waste gas that synthetic leather production line produces can enter spray chamber by described entrance by described blower fan pressurization back, through once spray absorbs, three fillers circulate absorption, carrying out a clear water then inhales, and by gas-liquid separator gas is separated with liquid absorption liquid, at last gas is discharged by exhaust outlet.
Described spray absorbs and refers to, the absorption liquid that is sprayed by spray thrower once sprays time absorption to the dimethyl formamide in the waste gas, and the absorption liquid of spray thrower is provided by supply tank, and absorption liquid continues again to enter in the supply tank after the spray thrower ejection.When treating that the concentration of dimethyl formamide reaches certain value in the supply tank, as, concentration reaches at 18% to 25% o'clock, exports in the liquid header the solution in the supply tank is disposable.So recycle the concentration that absorption liquid can effectively improve dimethyl formamide in the absorption liquid, reduce the difficulty of follow-up purification.
After waste gas absorbs through spray, enter first packing layer and carry out the first circulation absorption by first loop, circulation for the first time absorbs and absorbs roughly the same with spray, its difference is, absorption liquid is distributed in uniformly on the orifice plate material of first packing layer by first water-locator, so that waste gas can fully contact with absorption liquid in this packing layer, the absorption liquid major part that has absorbed dimethyl formamide falls in the supply tank again, and the absorption liquid in the supply tank enters in first water-locator through first closed circuit.
Waste gas enters the circulation second time successively and absorbs and circulation absorption for the third time through after circulation absorbs for the first time.It is roughly the same that the described circulation second time absorbs the process that absorbs with circulation for the first time, its main difference is: the absorption liquid that circulation for the second time absorbs is mainly supplied with by first water collector respectively, absorption liquid is delivered in second water-locator through second closed circuit by first water collector, be distributed in uniformly on described second packing layer by second water-locator then, and contact absorption with waste gas.The absorption liquid that has absorbed dimethyl formamide falls in first water collector again.Carrying out the circulation second time absorbs.
It is roughly the same that circulation for the third time absorbs the process that absorbs with circulation for the second time, and its main difference is: Xun Huan absorption liquid is mainly supplied with by second water collector for the third time, and absorption liquid is delivered in the 3rd water-locator by the 3rd closed circuit.Absorption liquid will be distributed on the 3rd packing layer equably, and contacts absorption with waste gas.The absorption liquid that has absorbed dimethyl formamide falls in second water collector again, and absorption for the third time circulates.
When circulating absorption and circulation absorption for the third time the second time, when treating that the interior absorption liquid concentration of second water collector and second water collector reaches certain value, with the disposable discharge of the water in the water collector, and by the additional absorption liquid of clear water absorbed layer.
Waste gas circulates through an above-mentioned spray three after the absorption, dimethyl formamide is absorbed more than 95% in the waste gas, enter the clear water absorbed layer then and carry out last thoroughly cleaning, to may absorb fully by remaining a small amount of dimethyl formamide in the waste gas, can reach the most recycling of the dimethyl formamide in the waste gas, carrying out a clear water then absorbs, can further reclaim the dimethyl formamide in the waste gas, thereby can improve the rate of recovery of dimethyl formamide greatly, economize on resources, reduce production costs.By gas-liquid separator, the waste gas that will meet environmental regulations is discharged at last.
To one skilled in the art, can make other various corresponding changes and deformation, and these all changes and deformation should belong within the protection domain of the utility model claim all according to technical scheme described above and design.
Claims (7)
1. a synthetic leather waste gas recovering device is characterized in that: comprise the spray chamber, first packing layer, second packing layer, the 3rd packing layer, a clear water absorbed layer and the exhaust outlet that set gradually from the bottom up;
The upper end of above-mentioned three packing layers and clear water absorbed layer is provided with a water-locator, all offers an inlet on each water-locator; Between described clear water absorbed layer and the exhaust outlet gas-liquid separator is set; The lower end of described second packing layer, the 3rd packing layer arranges a liquid trap respectively; All offer liquid outlet on described spray chamber and each liquid trap;
A liquid outlet of described spray chamber is communicated with the inlet of the water-locator of described first packing layer upper end, forms first closed circuit; The liquid outlet of the liquid trap of the described second packing layer lower end is communicated with the water inlet of the water-locator of second packing layer upper end, forms second closed circuit; The liquid outlet of the liquid trap of the 3rd packing layer lower end is communicated with the water inlet of the water-locator of the 3rd packing layer upper end, forms the 3rd closed circuit.
2. synthetic leather waste gas recovering device according to claim 1 is characterized in that: the water inlet that is positioned at the water-locator of described clear water absorbed layer upper end is communicated with extraneous water supply installation, and the lower end of this water-locator arranges a packing layer regularly.
3. synthetic leather waste gas recovering device according to claim 1 is characterized in that: a pipeline sight glass is set on described second closed circuit.
4. synthetic leather waste gas recovering device according to claim 1 is characterized in that: a pipeline sight glass is set on described the 3rd closed circuit.
5. according to each described synthetic leather waste gas recovering device of claim 1 to 4, it is characterized in that: the internal diameter of described synthetic leather waste gas recovering device is 2.2 meters to 2.4 meters, and height is 15 meters to 17 meters.
6. according to each described synthetic leather waste gas recovering device of claim 1 to 4, it is characterized in that: a spray thrower is set in the described spray chamber.
7. synthetic leather waste gas recovering device according to claim 6, it is characterized in that: described spray thrower is the nozzle-type spray thrower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320281467 CN203220849U (en) | 2013-05-21 | 2013-05-21 | Synthetic leather exhaust gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320281467 CN203220849U (en) | 2013-05-21 | 2013-05-21 | Synthetic leather exhaust gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203220849U true CN203220849U (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320281467 Expired - Fee Related CN203220849U (en) | 2013-05-21 | 2013-05-21 | Synthetic leather exhaust gas recovery device |
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| CN (1) | CN203220849U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721544A (en) * | 2013-12-14 | 2014-04-16 | 蚌埠玻璃工业设计研究院 | Washing tower used for treating low-radiation coating exhaust |
| CN104524926A (en) * | 2014-12-11 | 2015-04-22 | 苏州巨联科技有限公司 | Method and device for recycling dimethyl formamide |
| CN105032179A (en) * | 2015-07-06 | 2015-11-11 | 浙江浙大环境工程有限公司 | Apparatus and process for treating synthetic leather exhaust gas |
-
2013
- 2013-05-21 CN CN 201320281467 patent/CN203220849U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721544A (en) * | 2013-12-14 | 2014-04-16 | 蚌埠玻璃工业设计研究院 | Washing tower used for treating low-radiation coating exhaust |
| CN103721544B (en) * | 2013-12-14 | 2016-01-27 | 蚌埠玻璃工业设计研究院 | A kind of scrubbing tower for the treatment of low-emission coated tail gas |
| CN104524926A (en) * | 2014-12-11 | 2015-04-22 | 苏州巨联科技有限公司 | Method and device for recycling dimethyl formamide |
| CN105032179A (en) * | 2015-07-06 | 2015-11-11 | 浙江浙大环境工程有限公司 | Apparatus and process for treating synthetic leather exhaust gas |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 |
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| CF01 | Termination of patent right due to non-payment of annual fee |