CN103463924A - Adsorption device of synthesis tail gas of S-dichlorprop methyl ester - Google Patents
Adsorption device of synthesis tail gas of S-dichlorprop methyl ester Download PDFInfo
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- CN103463924A CN103463924A CN2013103836909A CN201310383690A CN103463924A CN 103463924 A CN103463924 A CN 103463924A CN 2013103836909 A CN2013103836909 A CN 2013103836909A CN 201310383690 A CN201310383690 A CN 201310383690A CN 103463924 A CN103463924 A CN 103463924A
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Abstract
The invention discloses an adsorption device of synthesis tail gas of S-dichlorprop methyl ester. The device comprises a reaction kettle, a condenser, a gas-liquid separator, a tail gas buffer tank and a tail gas treatment component. Particularly, the tail gas adsorption device is provided with two liquid seal U-shaped pipes; a gas outlet and a liquid inlet are formed at the top of the reaction kettle and connected with the two liquid seal U-shaped pipes respectively; the bottom of the condenser is connected with the gas-liquid separator; the gas-liquid separator is connected with the tail gas buffer tank; the top of the tail gas buffer tank is connected with the tail gas treatment component by a pipeline; and the bottom of the tail gas buffer tank is connected to the second liquid seal U-shaped pipe by a pipeline. The treatment and adsorption device of the synthesis tail gas of S-dichlorprop methyl ester is provided with the liquid seal U-shaped pipes and the condenser for external reflux, so that reacting raw materials easy to vaporize cannot be lost; the raw materials are saved; the cost is lowered; simultaneously, condensate in the condenser cannot directly flow back to the reaction kettle, so that the safety of the reaction kettle is ensured; and the tail gas is up to an emission standard after treatment.
Description
Technical field
The present invention relates to a kind of tail gas adsorption device, relate in particular to a kind of tail gas adsorption device of synthetic S-2-methyl chloropropionate, mainly belong to the technical field of chemical industry equipment.
Background technology
The general route that adopts D-ALPHA-Hydroxypropionic acid methyl esters and thionyl chloride reaction in the technique of the synthetic S-2-of manufacture methyl chloropropionate, reaction by-product sulfur dioxide and hydrogen chloride gas.In order to make the raw material that participates in reaction fully react and must remove the gas of reaction generation in time, usually adopt the mode of heating to improve on the one hand reaction speed, on the other hand the gas of reaction generation is driven out of.Utilize the vent gas treatment adsorbent equipment to be reclaimed the raw material of vaporization, reaction by-product sulfur dioxide and hydrogen chloride gas are absorbed to processing acquisition nitration mixture (dilute sulfuric acid, hydrochloric acid) take-away.
Summary of the invention
The object of the invention is to propose a kind of tail gas adsorption device of synthetic S-2-methyl chloropropionate.
Purpose of the present invention, to be achieved by the following technical programs: a kind of tail gas adsorption device of synthetic S-2-methyl chloropropionate, comprise reactor, condenser, gas-liquid separator, tail gas buffer and vent gas treatment assembly, it is characterized in that: described tail gas adsorption device is provided with the U-shaped pipe of the first fluid-tight and the U-shaped pipe of the second fluid-tight, described reactor top is provided with gas outlet and inlet, the gas outlet of the U-shaped Guan Yiduan coupled reaction of described the first fluid-tight still, the other end connects condenser, the inlet of the U-shaped Guan Yiduan coupled reaction of described the second fluid-tight still, the other end connects gas-liquid separator, described condenser pipe bottom is connected with gas-liquid separator, described gas-liquid separator connects tail gas buffer, described tail gas buffer top connects the vent gas treatment assembly by pipeline, bottom is connected to the U-shaped pipe of the second fluid-tight by pipeline.
Further, described tail gas adsorption device also is provided with secondary condenser, described secondary condenser is arranged between gas-liquid separator and tail gas buffer, described secondary condenser top connects gas-liquid separator by pipeline, bottom is provided with two arms, one of them arm connects the U-shaped pipe of the second fluid-tight, and another arm is connected to the tail gas buffer top.
Further, described vent gas treatment assembly comprises falling-film absorber, packed absorber, nitration mixture groove and liquid caustic soda neutralization chamber, described falling-film absorber top connects the tail gas buffer top by pipeline, the falling-film absorber bottom connects the nitration mixture groove by pipeline, described nitration mixture groove is provided with the conveying pipeline that is connected to the falling-film absorber top, described falling-film absorber bottom also is provided with venthole, described venthole is by bottom, conduit bonding pad absorption tower, described packing material absorbing top of tower is provided with emptying passage, described packing material absorbing tower bottom connects the liquid caustic soda neutralization chamber by pipeline, described liquid caustic soda neutralization chamber is provided with the transfer tube that is connected to the packing material absorbing top of tower.
Apply tail gas adsorption device of the present invention, be provided with the U-shaped pipe of fluid-tight and condenser and carry out exteenal reflux, make the raw material of the easy vaporization of reaction can not run off, saved raw material, reduced cost; Guarantee that the condenser inner condensat liquid can directly not be back to reactor simultaneously, guaranteed the safety of reactor, tail gas reaches discharge standard after treatment.
The accompanying drawing explanation
Fig. 1 is the structural representation of the tail gas adsorption device of the synthetic S-2-methyl chloropropionate of the present invention.
The specific embodiment
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
As shown in Figure 1, the tail gas adsorption device of synthetic S-2-methyl chloropropionate, comprise reactor 1, condenser 2, gas-liquid separator 3, tail gas buffer 4 and vent gas treatment assembly 5, especially, the tail gas adsorption device is provided with the U-shaped pipe 6 of the first fluid-tight and the U-shaped pipe 7 of the second fluid-tight, reactor 1 top is provided with gas outlet 11 and inlet 12, the gas outlet 11 of the U-shaped pipe 6 one end coupled reaction stills 1 of the first fluid-tight, the other end connects condenser 3, the inlet 12 of the U-shaped pipe 7 one end coupled reaction stills 1 of the second fluid-tight, the other end connects gas-liquid separator 3, condenser pipe 2 bottoms are connected with gas-liquid separator 3, gas-liquid separator 3 connects tail gas buffer 4, tail gas buffer 4 tops connect vent gas treatment assembly 5 by pipeline, bottom is connected to the U-shaped pipe 7 of the second fluid-tight by pipeline.
For optimizing this device, the tail gas adsorption device also is provided with secondary condenser 8, secondary condenser 8 is arranged between gas-liquid separator 3 and tail gas buffer 4, secondary condenser 8 tops connect gas-liquid separator 3 by pipeline, bottom is provided with two arms, one of them arm connects the U-shaped pipe 7 of the second fluid-tight, and another arm is connected to tail gas buffer 4 tops.
In addition, the vent gas treatment assembly comprises falling-film absorber, packed absorber, nitration mixture groove and liquid caustic soda neutralization chamber, the falling-film absorber top connects the tail gas buffer top by pipeline, the falling-film absorber bottom connects the nitration mixture groove by pipeline, the nitration mixture groove is provided with the conveying pipeline that is connected to the falling-film absorber top, the falling-film absorber bottom also is provided with venthole, venthole is by bottom, conduit bonding pad absorption tower, the packing material absorbing top of tower is provided with emptying passage, the packing material absorbing tower bottom connects the liquid caustic soda neutralization chamber by pipeline, the liquid caustic soda neutralization chamber is provided with the transfer tube that is connected to the packing material absorbing top of tower, accompanying drawing omits each parts mark in vent gas treatment assembly 5.
During concrete enforcement, adopt the condensed in two stages device, tail gas and part material by the U-shaped pipe of the first fluid-tight through the first-stage condenser condensation, condensed raw material enters gas-liquid separator, be back to the reaction of reactor sustainable participation by the U-shaped pipe of the second fluid-tight again, residual exhaust enters the second condenser and continues condensation, condensed raw material enters the reaction of reactor sustainable participation after being back to the U-shaped pipe of the second fluid-tight, be not condensed containing sulfur dioxide, the tail gas of hydrogen chloride gas enters tail gas buffer, a tail gas part can be dissolved in tail gas buffer, another part enters the vent gas treatment assembly and carries out vent gas treatment, the function of vent gas treatment assembly realizes non-the technology of the present invention emphasis, therefore repeat no more.
By above-mentioned character express, can find out, beneficial effect of the present invention: the synthesis tail gas of applying S-2-methyl chloropropionate of the present invention is processed adsorbent equipment, is provided with the U-shaped pipe of fluid-tight and condenser and carries out exteenal reflux, makes the raw material of the easy vaporization of reaction can not run off, save raw material, reduced cost; Guarantee that the condenser inner condensat liquid can directly not be back to reactor simultaneously, guaranteed the safety of reactor, tail gas reaches discharge standard after treatment.
In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.
Claims (3)
1. synthesize the tail gas adsorption device of S-2-methyl chloropropionate, comprise reactor, condenser, gas-liquid separator, tail gas buffer and vent gas treatment assembly, it is characterized in that: described tail gas adsorption device is provided with the U-shaped pipe of the first fluid-tight and the U-shaped pipe of the second fluid-tight, described reactor top is provided with gas outlet and inlet, the gas outlet of the U-shaped Guan Yiduan coupled reaction of described the first fluid-tight still, the other end connects condenser, the inlet of the U-shaped Guan Yiduan coupled reaction of described the second fluid-tight still, the other end connects gas-liquid separator, described condenser pipe bottom is connected with gas-liquid separator, described gas-liquid separator connects tail gas buffer, described tail gas buffer top connects the vent gas treatment assembly by pipeline, bottom is connected to the U-shaped pipe of the second fluid-tight by pipeline.
2. synthesize according to claim 1 the tail gas adsorption device of S-2-methyl chloropropionate, it is characterized in that: described tail gas adsorption device is provided with secondary condenser, described secondary condenser is arranged between gas-liquid separator and tail gas buffer, described secondary condenser top connects gas-liquid separator by pipeline, bottom is provided with two arms, one of them arm connects the U-shaped pipe of the second fluid-tight, and another arm is connected to the tail gas buffer top.
3. synthesize according to claim 1 the tail gas adsorption device of S-2-methyl chloropropionate, it is characterized in that: described vent gas treatment assembly comprises falling-film absorber, packed absorber, nitration mixture groove and liquid caustic soda neutralization chamber, described falling-film absorber top connects the tail gas buffer top by pipeline, the falling-film absorber bottom connects the nitration mixture groove by pipeline, described nitration mixture groove is provided with the conveying pipeline that is connected to the falling-film absorber top, described falling-film absorber bottom also is provided with venthole, described venthole is by bottom, conduit bonding pad absorption tower, described packing material absorbing top of tower is provided with emptying passage, described packing material absorbing tower bottom connects the liquid caustic soda neutralization chamber by pipeline, described liquid caustic soda neutralization chamber is provided with the transfer tube that is connected to the packing material absorbing top of tower.
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| CN201310383690.9A CN103463924B (en) | 2013-08-29 | 2013-08-29 | The tail gas adsorption device of synthesis S-2-methyl chloropropionate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383789A (en) * | 2014-09-26 | 2015-03-04 | 大同市宇林德炭材料科技有限公司 | Industrial tail gas treatment complete equipment of carbon fiber reinforced graphite |
| CN105944511A (en) * | 2016-05-17 | 2016-09-21 | 山东海益化工科技有限公司 | Liquid seal draining U-shaped pipe |
| CN112624982A (en) * | 2020-12-14 | 2021-04-09 | 江西禾益化工股份有限公司 | Continuous washing phase splitting device for synthesizing ethirimol |
| CN113578224A (en) * | 2021-07-28 | 2021-11-02 | 重庆天原化工有限公司 | Production system and process of solid phosgene |
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| EP0207448A2 (en) * | 1985-06-27 | 1987-01-07 | Elf Atochem S.A. | Method for recovery of ethylene oxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383789A (en) * | 2014-09-26 | 2015-03-04 | 大同市宇林德炭材料科技有限公司 | Industrial tail gas treatment complete equipment of carbon fiber reinforced graphite |
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| CN105944511A (en) * | 2016-05-17 | 2016-09-21 | 山东海益化工科技有限公司 | Liquid seal draining U-shaped pipe |
| CN112624982A (en) * | 2020-12-14 | 2021-04-09 | 江西禾益化工股份有限公司 | Continuous washing phase splitting device for synthesizing ethirimol |
| CN112624982B (en) * | 2020-12-14 | 2023-11-17 | 江西禾益化工股份有限公司 | Continuous washing phase-splitting device for synthesizing ethirimol |
| CN113578224A (en) * | 2021-07-28 | 2021-11-02 | 重庆天原化工有限公司 | Production system and process of solid phosgene |
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| CN103463924B (en) | 2016-01-27 |
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Effective date of registration: 20181219 Address after: Room 1,132, Building 1, 1858 Jinchang Road, Putuo District, Shanghai, 2003 Patentee after: Shanghai Aohe Chemical Technology Co.,Ltd. Address before: 215619 Zhangjiagang Sanlian Chemical Technology Co., Ltd., Dongsha Chemical Zone, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: ZHANGJIAGANG SANLIAN CHEMICAL TECHNOLOGY Co.,Ltd. |
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