CN205323494U - Organic waste gas solvent absorbs retrieves clean system - Google Patents
Organic waste gas solvent absorbs retrieves clean system Download PDFInfo
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- CN205323494U CN205323494U CN201620007725.8U CN201620007725U CN205323494U CN 205323494 U CN205323494 U CN 205323494U CN 201620007725 U CN201620007725 U CN 201620007725U CN 205323494 U CN205323494 U CN 205323494U
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Abstract
The utility model discloses an organic waste gas solvent absorbs retrieves clean system, including the absorption tower, the upper portion on absorption tower is equipped with the gas outlet, and the lower part on absorption tower is equipped with air inlet and liquid outlet, and the upper portion of the inner chamber on absorption tower is equipped with shower nozzle spray thrower down, the liquid outlet even has analytic tower, the lower part of analytic tower is equipped with water steam inlet, and the upper portion of the inner chamber of analytic tower is equipped with the partial condenser, even there is the condenser on the upper portion of analytic tower, even there is the finished product jar behind the condenser. The utility model aims to provide a not only can can also leave gaseous and organic solvent separation with absorbents such as organic solvent and water, obtain purer organic solvent relatively, with low costs, long service life's of while an organic waste gas solvent absorbs retrieves clean system.
Description
Technical field
This utility model belongs to waste gas and liquids treatment system, more specifically, it relates to a kind of organic exhaust gas solvent absorption recovering and purifying system。
Background technology
In actual production, often carrying the considerable amount of organic solvent of technique residual in waste gas, this waste gas is not suitable for direct discharge。From the angle of environmental protection, it is necessary to first being removed by organic solvent therein by certain means, above-mentioned gas can be only achieved the standard of discharge。
The Chinese patent that Authorization Notice No. is CN101703869B discloses a kind of device reclaiming organic solvent from waste gas, and it includes absorption tower, adsorption tanks, thermal regeneration mechanism；Arranging the catotropic spray thrower of spray in described absorption tower, waste gas becomes clean gas after spray and discharges from top, absorption tower from entrance absorption tower, bottom, and spray liquid is absorbent；The built-in molecular sieve of described adsorption tanks, adsorption tanks pass through pipeline, and outlet is connected with spray thrower, liquid phase is discharged even in import and bottom, absorption tower, making the absorbent containing organic solvent flow through adsorption tanks, organic solvent is by after molecular sieve adsorption, and absorbent is again introduced into absorption tower spray operation；Described thermal regeneration mechanism is adsorbed with the molecular sieve of organic solvent by heating, thus obtaining organic solvent, and molecular sieve recycling capable of circulation。Organic solvent in waste gas is reclaimed by said method, but it exists two comparatively crucial difficult industrialization items:
1. this device wishes, by molecular sieve adsorption organic solvent, to be separated with absorbent by organic solvent, makes the molecular sieve being adsorbed with organic solvent enter regeneration sector, and makes absorbent recycle；But it have ignored molecular sieve can also adsorb the absorbent such as water, ethylene glycol phenyl ether, not only expends substantial amounts of molecular sieve simultaneously, it will carry substantial amounts of water etc. and enter organic solvent simultaneously, increase the processing cost of later stage organic solvent；
2. molecular sieve exists with solid, and it flows between pipeline, it is easy to blocking pipeline, and more difficult maintenance。
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is in that offer is possible not only to separate gas with organic solvent, can also by the absorbent such as organic solvent and water from, obtaining relatively pure organic solvent, cost is low simultaneously, a kind of organic exhaust gas solvent absorption recovering and purifying system of long service life。
For achieving the above object, this utility model provides following technical scheme:
A kind of organic exhaust gas solvent absorption recovering and purifying system, including absorption tower, the top on described absorption tower is provided with gas outlet, and the bottom on absorption tower is provided with air inlet and liquid outlet, and the top of the inner chamber on absorption tower is provided with the catotropic spray thrower of spray；Described liquid outlet is connected with Analytic Tower, and the bottom of described Analytic Tower is provided with water vapour import, and the top of the inner chamber of Analytic Tower is provided with fractional condenser；The top of described Analytic Tower is connected with condenser, is connected with finished pot after described condenser。
Organic exhaust gas enters absorption tower by being located at the air inlet of the bottom on absorption tower, the absorbent that organic solvent in waste gas is sprayed by spray thrower fully absorbs, clean waste gas can discharge, by gas outlet, the lower step process of liquid entrance that absorption tower, organic solvent and absorbent are formed；Forming azeotropic under organic solvent and the absorbent water vapor acting in Analytic Tower, azeotropic mixture is easily separated in fractional condenser, and organic solvent and absorbent successively arrive liquefaction in condenser。Adopt said structure, it is possible to being separated with organic solvent by the absorbent such as water, obtain relatively pure organic solvent, the organic solvent obtained can be recycled, even or the cost of direct liquid waste processing also relatively low；This system structure is simple simultaneously, and the heat that its water vapour may utilize in production converts, less costly；It addition, its process reduces the introducing of solid, pipeline will not be blocked, be conducive to safeguarding and increasing service life。
As preferably, being provided with the first water distributing can between described condenser and finished pot, the bottom of described first water distributing can is connected with the water return pipeline for connecting the first water distributing can and Analytic Tower。
When in the organic solvent in the first water distributing can containing considerable amount of water, organic solvent and water can be transmitted back in Analytic Tower by water return pipeline and again process；When the Water in Organic Solvents content in the first water distributing can reaches certain amount, the liquid in the first water distributing can be collected to finished pot by pipeline。Adopt said structure, be conducive to improving the separating degree of water and organic solvent。
As preferably, the bottom of described Analytic Tower is provided with outlet, and described outlet is connected with the second water distributing can；Described second water distributing can is provided with time organic solvent pipeline for connecting Analytic Tower。
When having a large amount of organic solvent more than the second water distributing can, liquid passes through back organic solvent pipeline and is again transported in Analytic Tower and processes, and advantageously ensures that the low organic solvent amount in the water of collection, is conducive to discharge。
As preferably, being provided with heat exchanger between described absorption tower and Analytic Tower。
Adopting said structure, organic solvent carries out heat exchange in heat exchanger, and it can reach the effect of preheating, and the origin of heat in heat exchanger is mainly what miscellaneous part produced, and it is self-sufficient, can reduce energy consumption。
As preferably, described spray thrower is connected with cooler, and described cooler is connected with heat exchanger。
Adopt said structure, reduce energy consumption。
As preferably, being provided with the first circulating pump between described absorption tower and heat exchanger, described first circulating pump is provided with the first circulation line connected with absorption tower。
If containing considerable amount of gas in the organic solvent in pipeline, then this organic solvent being drawn back to absorption tower by the first circulation line by the first circulating pump。Adopt said structure, advantageously ensure that the air pressure in system is steady。
As preferably, described outlet is connected with the second circulating pump, and described second circulating pump is connected with heat exchanger。
Adopt said structure, reduce energy consumption。
By adopting technique scheme, have the advantages that
Can being separated with organic solvent by the absorbent such as water, obtain relatively pure organic solvent, the organic solvent obtained can be recycled, even or the cost of direct liquid waste processing also relatively low；This system structure is simple simultaneously, and the heat that its water vapour may utilize in production converts, less costly；It addition, its process reduces the introducing of solid, pipeline will not be blocked, be conducive to safeguarding and increasing service life。
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment；
Fig. 2 is the structural representation on the absorption tower of embodiment。
1, surge tank；2, absorption tower；201, absorption tower body；202, absorption tower inner chamber；203, air inlet；204, gas outlet；205, liquid outlet；3, Analytic Tower；4, spray thrower；5, cooler；6, the first circulation line；7, the first circulating pump；8, condenser；9, the first water distributing can；10, heat exchanger；11, water vapour import；12, fractional condenser；13, water return pipeline；14, finished pot；15, outlet；16, the second water distributing can；17, the second circulating pump；18, organic solvent pipeline is returned。
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in detail。
As it is shown in figure 1, a kind of organic exhaust gas solvent absorption recovering and purifying system, including the surge tank 1 set gradually, absorption tower 2, Analytic Tower 3。
As it is shown in figure 1, surge tank 1 connects industrial waste gas and absorption tower 2。As in figure 2 it is shown, absorption tower 2 is packed tower, it includes absorption tower body 201 and absorption tower inner chamber 202。The bottom on absorption tower 2 is provided with air inlet 203, and air inlet 203 is connected with surge tank 1 by pipeline。The top on absorption tower 2 is provided with gas outlet 204, and it can be used for discharging the waste gas eliminating organic solvent。The top of absorption tower inner chamber 202 is provided with the catotropic spray thrower 4 of spray, and spray thrower 4 can be used for spraying absorbent, and the selection of absorbent can select according to the kind of organic solvent, is generally adopted ethanol or this kind of innocuous substance of water makes absorbent。As it is shown in figure 1, absorbent also carries out cooling process through subcooler 5 before ejecting, it can guarantee that the absorbent of injection is low temperature。Waste gas enters absorption tower 2 from surge tank 1；Shown in Fig. 2, and waste gas enters absorption tower 2 from the air inlet 203 of the bottom on absorption tower 2, waste gas diffuses up along absorption tower inner chamber 202, it carries out the diffusion of a definite sequence under the impact of the filler of absorption tower inner chamber 202, waste gas is under the effect of the absorbent of low temperature, organic solvent in waste gas is completely absorbed, clean waste gas can pass through gas outlet 204 and discharge absorption tower 2, if still having considerable amount of organic solvent in waste gas, needs a kind of organic exhaust gas solvent absorption recovering and purifying system being introduced into the application more again to process；Absorbed organic solvent and absorbent enter lower step by the liquid outlet 205 of the bottom on absorption tower 2 and process。
As it is shown in figure 1, absorption tower 2 is connected by pipeline and the first circulating pump 7, absorption tower 2 can be drawn back to absorption tower 2 by the organic solvent in the pipeline between pipeline and the first circulating pump 7 or be evacuated in heat exchanger 10 by the first circulating pump 7。If containing considerable amount of gas in the organic solvent in pipeline, then by the first circulating pump 7, this organic solvent is drawn back to absorption tower 2 by the first circulation line 6, be otherwise evacuated in heat exchanger 10 without exception and swap heat carry out lower step process。Organic solvent carries out heat exchange in heat exchanger 10, and it can reach the effect of preheating, and heat exchange terminates rear organic solvent and enters in Analytic Tower 3。
As it is shown in figure 1, the bottom of Analytic Tower 3 is provided with water vapour import 11, water vapour import 11 is connected with steam heating system, and the liquid in Analytic Tower 3 is distilled by steam heating。Liquid is under steam heating, organic solvent and water form azeotropic mixture and flow up along the filler in Analytic Tower 3, organic solvent and water form the fractional condenser 12 that azeotropic mixture arranges on the top of Analytic Tower 3 inner chamber and are easily separated, and then pass through pipeline and diffuse to condenser 8 and liquefy。Organic solvent and the part water of condensed device 8 post liquefaction enter the first water distributing can 9 by pipeline, and the bottom of the first water distributing can 9 is connected by pipeline and the finished pot 14 for collecting organic solvent。The bottom of the first water distributing can 9 connects with Analytic Tower 3 also by water return pipeline 13, when in the organic solvent in the first water distributing can 9 containing considerable amount of water, organic solvent and water can be transmitted back in Analytic Tower 3 by water return pipeline 13 and again process；When the Water in Organic Solvents content in the first water distributing can 9 reaches certain amount, the liquid in the first water distributing can 9 can be collected to finished pot 14 by pipeline。
As it is shown in figure 1, the bottom of Analytic Tower 3 is additionally provided with outlet 15, outlet 15 is connected with the second water distributing can 16。When the second water distributing can more than 16 has a large amount of organic solvent, liquid passes through back organic solvent pipeline 18 and is again transported in Analytic Tower 3 and processes。Outlet 15 is also connected with the second circulating pump 17, and the second circulating pump 17 is connected with heat exchanger 10, and it can be used for carrying out heat exchange。Cooler 5 is connected with heat exchanger 10 simultaneously, it is also possible in carrying out heat exchange。
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model。It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model。
Claims (7)
1. an organic exhaust gas solvent absorption recovering and purifying system, including absorption tower (2), the top on described absorption tower (2) is provided with gas outlet (204), the bottom on absorption tower (2) is provided with air inlet (203) and liquid outlet (205), and the top of the inner chamber of absorption tower (2) is provided with the catotropic spray thrower of spray (4)；It is characterized in that: described liquid outlet (205) is connected with Analytic Tower (3), the bottom of described Analytic Tower (3) is provided with water vapour import (11), and the top of the inner chamber of Analytic Tower (3) is provided with fractional condenser (12)；The top of described Analytic Tower (3) is connected with condenser (8), is connected with finished pot (14) after described condenser (8)。
2. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 1, it is characterized in that: be provided with the first water distributing can (9) between described condenser (8) and finished pot (14), the bottom of described first water distributing can (9) is connected with the water return pipeline (13) for connecting the first water distributing can (9) and Analytic Tower (3)。
3. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 1, is characterized in that: the bottom of described Analytic Tower (3) is provided with outlet (15), and described outlet (15) is connected with the second water distributing can (16)；Described second water distributing can (16) is provided with time organic solvent pipeline (18) for connecting Analytic Tower (3)。
4. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 3, is characterized in that: be provided with heat exchanger (10) between described absorption tower (2) and Analytic Tower (3)。
5. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 4, is characterized in that: described spray thrower (4) is connected with cooler (5), and described cooler (5) is connected with heat exchanger (10)。
6. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 4, it is characterized in that: being provided with the first circulating pump (7) between described absorption tower (2) and heat exchanger (10), described first circulating pump (7) is provided with the first circulation line (6) connected with absorption tower (2)。
7. a kind of organic exhaust gas solvent absorption recovering and purifying system according to claim 4, is characterized in that: described outlet (15) is connected with the second circulating pump (17), and described second circulating pump (17) is connected with heat exchanger (10)。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620007725.8U CN205323494U (en) | 2016-01-02 | 2016-01-02 | Organic waste gas solvent absorbs retrieves clean system |
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| CN201620007725.8U CN205323494U (en) | 2016-01-02 | 2016-01-02 | Organic waste gas solvent absorbs retrieves clean system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854466A (en) * | 2018-08-08 | 2018-11-23 | 浙江省环境工程有限公司 | A kind of purification-recovery system of methylene chloride exhaust gas |
| CN109453621A (en) * | 2018-12-21 | 2019-03-12 | 江苏格陵兰传热科技有限公司 | A kind of waste gas recovery utilizes energy saver |
| CN113398721A (en) * | 2021-05-24 | 2021-09-17 | 太原科技大学 | Acetylene, chloroethylene and overflow water recycling system and method |
| CN114425223A (en) * | 2020-10-15 | 2022-05-03 | 中国石油化工股份有限公司 | Tetrahydrofuran tail gas recovery system, method and application |
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2016
- 2016-01-02 CN CN201620007725.8U patent/CN205323494U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854466A (en) * | 2018-08-08 | 2018-11-23 | 浙江省环境工程有限公司 | A kind of purification-recovery system of methylene chloride exhaust gas |
| CN108854466B (en) * | 2018-08-08 | 2024-07-09 | 浙江省环境工程有限公司 | Purification recovery system of dichloromethane waste gas |
| CN109453621A (en) * | 2018-12-21 | 2019-03-12 | 江苏格陵兰传热科技有限公司 | A kind of waste gas recovery utilizes energy saver |
| CN114425223A (en) * | 2020-10-15 | 2022-05-03 | 中国石油化工股份有限公司 | Tetrahydrofuran tail gas recovery system, method and application |
| CN113398721A (en) * | 2021-05-24 | 2021-09-17 | 太原科技大学 | Acetylene, chloroethylene and overflow water recycling system and method |
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