CN202620991U - Device for recovering organic solvent gas - Google Patents
Device for recovering organic solvent gas Download PDFInfo
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- CN202620991U CN202620991U CN 201220336357 CN201220336357U CN202620991U CN 202620991 U CN202620991 U CN 202620991U CN 201220336357 CN201220336357 CN 201220336357 CN 201220336357 U CN201220336357 U CN 201220336357U CN 202620991 U CN202620991 U CN 202620991U
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- absorption liquid
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Abstract
The utility model discloses a device for recovering organic solvent gas. The device comprises a gas absorption tower (1),a primary absorption liquid storage tank (2), an absorption liquid analytic tower (3), a water divider (5) and a secondary absorption liquid storage tank (6), wherein a dichloroethane tail gas inlet (15) is formed in the lower part of the gas absorption tower; a tail gas exhaustion hole (16) is formed in the top of the gas absorption tower; the bottom of the gas absorption tower is connected with the absorption liquid storage tanks; the primary absorption liquid storage tank is connected with the absorption liquid analytic tower by a first circulating pump (8) and a first heat exchanger (10); a gas-liquid fractional condenser (4) is arranged on the top of the absorption liquid analytic tower and is connected with the water divider of a third heat exchanger (14) and a dichloroethane tank (7); a steam inlet (11) is formed in the absorption liquid analytic tower; the absorption liquid analytic tower is connected with the secondary absorption liquid storage tank; and the secondary absorption liquid storage tank is connected with the gas absorption tower by a second circulating pump (9). The device has the advantages that the dichloroethane can be recovered, and the cyclic utilization of absorption liquid can be realized, so that the production cost is reduced.
Description
Technical field
The utility model relates to a kind of organic solvent gas retracting device.
Background technology
Acetanisole has the fragrance of May bloom and similar anisaldehyde, can replace anisaldehyde to be used for fragrance for detergents; Be with a wide range of applications.Its conventional production process is: in the dichloroethanes solvent, under the catalytic action of alchlor, methyl phenyl ethers anisole and chloroacetic chloride generation Friedel-Crafts reaction are produced the acetanisole bullion; Bullion through ice separate, pickling, alkali cleaning, washing remove alchlor and must wash material, carries out rectifying after washing material precipitation reclaims dichloroethanes, obtains target product.Wherein in the dichloroethanes removal process, because the dichloroethanes boiling point is lower, loss is bigger, increases the cost of product, also causes environmental pollution (atmosphere pollution) in addition, is unfavorable for the carrying out of cleaner production work.
Summary of the invention
The purpose of the utility model provides and a kind ofly can reclaim dichloroethanes, prevents that it from polluting environment, reduces production costs, and can realize the organic solvent gas retracting device of recycling of absorption liquid again.
For addressing the above problem; The technical scheme of the utility model is: a kind of organic solvent gas retracting device; Comprise absorption column of gas, one-level absorption liquid storage tank, absorption liquid Analytic Tower, water knockout drum, secondary absorption liquid storage tank and dichloroethanes jar; Said absorption column of gas bottom is provided with the dichloroethanes gas inlet, and the top is provided with the tail gas tap, and said GAS ABSORPTION tower bottom connects one-level absorption liquid storage tank, first circulating pump, first heat exchanger and absorption liquid Analytic Tower successively; The absorption liquid Analytic Tower connects the 3rd heat exchanger, water knockout drum and dichloroethanes jar successively through the gas-liquid segregator that is located at its top, and the top of said water knockout drum also directly is connected with the gas-liquid segregator; Said absorption liquid Analytic Tower bottom is provided with the steam inlet; The bottom of absorption liquid Analytic Tower connects secondary absorption liquid storage tank; Secondary absorption liquid storage tank is provided with water out, and said secondary absorption liquid storage tank is connected the top of absorption column of gas successively with first heat exchanger through second circulating pump.When reclaiming dichloroethanes; Because absorption liquid is not participated in chemical reaction; So be connected with absorption column of gas having received the secondary absorption liquid storage tank of resolving the back absorption liquid, the absorption liquid after resolving is mixed with dichloroethanes tail gas again, realize the recycle of absorption liquid.
As the further improvement of the utility model, between said first heat exchanger and the absorption column of gas top second heat exchanger is set.Desorbed solution to through first heat exchanger further cools off, to reach better assimilation effect.
As the further improvement of the utility model, said first circulating pump also directly links to each other with the absorption column of gas middle part.Absorption liquid absorbs dichloroethanes in one-level absorption liquid storage tank after, unsaturated fully, still have the certain absorption effect, get in the absorption column of gas by first circulating pump and continue to receive dichloroethanes, absorption liquid is fully utilized.
In sum, the beneficial effect of the utility model is: can reclaim dichloroethanes, prevent that it from polluting environment, be convenient to the carrying out of cleaner production work, can realize recycling of absorption liquid again, reduce production costs.
Description of drawings
Fig. 1 is the sketch map of the utility model organic solvent gas retracting device.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further explanation.
Organic solvent gas retracting device as shown in Figure 1; Comprise absorption column of gas 1, one-level absorption liquid storage tank 2, absorption liquid Analytic Tower 3, water knockout drum 5, secondary absorption liquid storage tank 6 and dichloroethanes jar 7; Said absorption column of gas 1 bottom is provided with dichloroethanes gas inlet 15; The top is provided with tail gas tap 16; Said absorption column of gas 1 bottom connects one-level absorption liquid storage tank 2, and one-level absorption liquid storage tank 2 is connected absorption liquid Analytic Tower 3 through first circulating pump 8 with first heat exchanger 10 successively, and absorption liquid Analytic Tower 3 tops are provided with gas-liquid segregator 4; Said gas-liquid segregator 4 connects the 3rd heat exchanger 14, water knockout drum 5 and dichloroethanes jar 7 successively, and the top of said water knockout drum 5 is connected with gas-liquid segregator 4; Said absorption liquid Analytic Tower 3 bottoms are provided with steam inlet 11; The bottom of absorption liquid Analytic Tower 3 connects secondary absorption liquid storage tank 6; Secondary absorption liquid storage tank 6 is provided with water out 12, and said secondary absorption liquid storage tank 6 is connected the top of absorption column of gas 1 successively with second heat exchanger 13 through second circulating pump 9, first heat exchanger 10; Said first circulating pump 8 also directly links to each other with absorption column of gas 1 middle part, and first circulating pump 8 is connected with absorption column of gas 1 middle part with first heat exchanger 10 through three-way pipe.
Concrete process: in absorption column of gas 1, feed dichloroethanes tail gas; Dichloroethanes tail gas is absorbed liquid and absorbs in one-level absorption liquid storage tank 2; First circulating pump 8 is delivered to absorption liquid Analytic Tower 3 with the absorption liquid that has absorbed dichloroethanes in the absorption liquid storage tank after first heat exchanger 10 heats up; Mixing material in the absorption liquid Analytic Tower 3 is heated by the steam that steam inlet 11 feeds heating in the bottom of absorption liquid Analytic Tower 3 simultaneously; Mixing material temperature rising back is owing to lower being vaporized of boiling point of dichloroethanes; Gas-liquid segregator 4 place's moisture stop upwards and dichloroethanes after the vaporization through gas-liquid segregator 4; Be liquid through the 3rd heat exchanger 14 cooling back liquefaction and got in the water knockout drum 5 by water knockout drum 5 tops, a spot of moisture is on the top of dichloroethanes liquid and get into again in the gas-liquid segregator 4 in water knockout drum 5, and dichloroethanes is collected and gets into dichloroethanes jar 7.The steam water that absorption liquid and the heating steam of isolating dichloroethanes in the absorption liquid Analytic Tower 3 runs into after the cold mixing material liquefaction gets into secondary absorption liquid storage tank 6 by absorption liquid Analytic Tower 3 bottoms; Steam water has the water out 12 on the secondary absorption liquid storage tank 6 to flow out; Absorption liquid then is delivered to the absorption that absorption column of gas 1 carries out next time by second circulating pump 9 after first heat exchanger 10 and 13 coolings of second heat exchanger; Realized the recycle of absorption liquid, gases such as a spot of dichloroethanes tail gas and steam are discharged by the tail gas tap 16 at absorption column of gas 1 top simultaneously.
Owing to possibly not reach capacity absorption liquid absorbs dichloroethanes in one-level absorption liquid storage tank 2 after; So can the absorption liquids in the one-level absorption liquid storage tank 2 directly be delivered to by first circulating pump 8 and carry out in the absorption column of gas absorbing dichloroethanes the second time, and then be delivered to and carry out separation process in the absorption liquid Analytic Tower 3.
In whole separation process; Because it is lower that first circulating pump 8 is transported to the mixing material temperature of first heat exchanger 10 in the one-level absorption liquid storage tank 2; And second circulating pump 9 is higher from secondary absorption liquid storage tank 6 interior absorption liquid temperature of carrying; So with same heat exchanger (first heat exchanger 10) both are carried out energy exchange, reduce additional energy consumption.
First circulating pump 8 is connected with the middle part of absorption column of gas 1, has increased the time of contact of absorption liquid and dichloroethanes tail gas, absorbs more abundant; And the purity of second heat exchanger, 13 1 side dichloroethanes is higher; So second heat exchanger 13 connects the top of absorption column of gas; Further improve the time of contact of absorption liquid and dichloroethanes tail gas, make the absorption of dichloroethanes tail gas more abundant, absorption liquid also can reach capacity faster.And the top of dividing the water layer 5 and the connecting portion of gas-liquid segregator 4 to be positioned at branch water layer 5 is because the density of dichloroethanes is bigger than the density of water, and water can accumulate in the top of dichloroethanes.
Claims (3)
1. organic solvent gas retracting device; It is characterized in that: comprise absorption column of gas (1), one-level absorption liquid storage tank (2), absorption liquid Analytic Tower (3), water knockout drum (5), secondary absorption liquid storage tank (6) and dichloroethanes jar (7); Said absorption column of gas (1) bottom is provided with dichloroethanes gas inlet (15); The top is provided with tail gas tap (16); Said absorption column of gas (1) bottom connects one-level absorption liquid storage tank (2), first circulating pump (8), first heat exchanger (10) and absorption liquid Analytic Tower (3) successively; Absorption liquid Analytic Tower (3) connects the 3rd heat exchanger (14), water knockout drum (5) and dichloroethanes jar (7) successively through the gas-liquid segregator (4) that is located at its top, and the top of said water knockout drum (5) also directly is connected with gas-liquid segregator (4); Said absorption liquid Analytic Tower (3) bottom is provided with steam inlet (11); The bottom of absorption liquid Analytic Tower (3) connects secondary absorption liquid storage tank (6); Secondary absorption liquid storage tank (6) is provided with water out (12), and said secondary absorption liquid storage tank (6) is connected the top of absorption column of gas (1) successively with first heat exchanger (10) through second circulating pump (9).
2. a kind of organic solvent gas retracting device according to claim 1 is characterized in that: between said first heat exchanger (10) and absorption column of gas (1) top second heat exchanger (13) is set.
3. a kind of organic solvent gas retracting device according to claim 1 and 2 is characterized in that: said first circulating pump (8) also directly links to each other with absorption column of gas (1) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336357 CN202620991U (en) | 2012-07-11 | 2012-07-11 | Device for recovering organic solvent gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336357 CN202620991U (en) | 2012-07-11 | 2012-07-11 | Device for recovering organic solvent gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202620991U true CN202620991U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220336357 Expired - Lifetime CN202620991U (en) | 2012-07-11 | 2012-07-11 | Device for recovering organic solvent gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN202620991U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984635A (en) * | 2015-07-15 | 2015-10-21 | 天津大学 | Exhaust treatment device containing volatile organic compound |
| CN105289217A (en) * | 2015-02-15 | 2016-02-03 | 江苏恒联环境技术有限公司 | Recycling system of VOCs in exhaust gas |
| CN105327591A (en) * | 2014-08-15 | 2016-02-17 | 北京日新达能技术有限公司 | Organic exhaust-gas processing method |
| WO2016058400A1 (en) * | 2014-10-16 | 2016-04-21 | 天津奥展兴达化工技术有限公司 | Process for purification of tail gas containing volatile organics |
| CN108854456A (en) * | 2018-07-17 | 2018-11-23 | 九三粮油工业集团有限公司 | A kind of Analytic Tower heat energy recycling system and utilize method |
-
2012
- 2012-07-11 CN CN 201220336357 patent/CN202620991U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327591A (en) * | 2014-08-15 | 2016-02-17 | 北京日新达能技术有限公司 | Organic exhaust-gas processing method |
| WO2016058400A1 (en) * | 2014-10-16 | 2016-04-21 | 天津奥展兴达化工技术有限公司 | Process for purification of tail gas containing volatile organics |
| CN105289217A (en) * | 2015-02-15 | 2016-02-03 | 江苏恒联环境技术有限公司 | Recycling system of VOCs in exhaust gas |
| CN105289217B (en) * | 2015-02-15 | 2018-04-06 | 江苏恒联环境技术有限公司 | VOCs recycling systems in a kind of waste gas |
| CN104984635A (en) * | 2015-07-15 | 2015-10-21 | 天津大学 | Exhaust treatment device containing volatile organic compound |
| CN108854456A (en) * | 2018-07-17 | 2018-11-23 | 九三粮油工业集团有限公司 | A kind of Analytic Tower heat energy recycling system and utilize method |
| CN108854456B (en) * | 2018-07-17 | 2021-07-06 | 九三粮油工业集团有限公司 | System and method for recycling heat energy of desorption tower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |