CN205683808U - Three grades of absorption systems of hydrochloric acid in tetrachloroethylene production - Google Patents
Three grades of absorption systems of hydrochloric acid in tetrachloroethylene production Download PDFInfo
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- CN205683808U CN205683808U CN201620586107.3U CN201620586107U CN205683808U CN 205683808 U CN205683808 U CN 205683808U CN 201620586107 U CN201620586107 U CN 201620586107U CN 205683808 U CN205683808 U CN 205683808U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
This utility model relates to the three grades of absorption systems of hydrogen chloride produced during a kind of tetrachloroethylene produces.Purpose be to provide a kind of energy-conserving and environment-protective, can produce qualified byproduct hydrochloric acid tetrachloroethylene produce in three grades of absorption systems of hydrochloric acid.Hydrogen chloride gas takes three grades of absorptions, the series connection of two-stage graphitic absorber is connected with tail gas absorber again, the liquid level of rear stage equipment is above previous stage liquid level, and so by action of gravity, absorbing liquid can absorb step by step and carry absorbing liquid without electric power pumping equipment.This utility model adapts to the mixed gas of different hydrogen chloride content and processes, absorption process uses potential difference relation, gas is allowed to flow up, downward liquid flow, without forcing power-equipment, energy-conserving and environment-protective, good absorbing effect, product concentration of hydrochloric acid is high, and reduces later stage vent gas treatment cost, reduces the pollution to environment.
Description
Technical field
This utility model relates to a kind of chlorine hydride absorption system, is specifically related to during a kind of tetrachloroethylene produces the chlorination produced
Three grades of absorption systems of hydrogen.
Background technology
The production method of tetrachloroethylene has multiple, including acetylene method, hydrocarbon or chlorohydrocarbon carbon tetrachloride co-production four chloroethene
Alkene, process for oxychlorination, thermal chlorination, carbon tetrachloride produce tetrachloroethylene etc..No matter but using which kind of method to prepare tetrachloroethylene
A large amount of byproduct hydrogen chlorides will be produced, the hydrogen chloride gas of about 21000t/a can be produced such as our factory tetrachloroethylene in process of production
Body.Hydrogen chloride gas is combined generation and has corrosive hydrochloric acid with water, and absorbing medium temperature different solubilities can change,
And need its concentration reaching 31% just can become qualified side-product for by-product hydrochloric acid, the design side-product of this production line
Concentration is 31% hydrochloric acid about 69000t/a.But in tetrachloroethylene device design process, only devise a graphitic absorber,
Affecting due to gas flow rate, temperature etc. in real process, cause absorbing concentration of hydrochloric acid relatively low, product scrapes through, but
After follow-up stripping system evaporation organic facies, the volatile hydrogen chloride dissolved after stripping due to Organic substance causes concentration to be unable to reach completely
Sell requirement.Traditional absorber is that hydrogen chloride gas enters absorber from bottom, and the absorbing liquid that absorber top enters absorbs
Flowing out from absorber bottom under gravity condition after hydrogen chloride gas and enter air stripping operation, such assimilation effect is extremely difficult to
Required assimilation effect.
Utility model content
Main purpose of the present utility model is to provide a kind of energy-conserving and environment-protective, can produce four chloroethenes of qualified byproduct hydrochloric acid
Three grades of absorption systems of hydrochloric acid in alkene production.
For achieving the above object, the technical solution adopted in the utility model is: hydrochloric acid three grades absorption in tetrachloroethylene production
System, including graphitic absorber A, the gaseous mixture being mixed with hydrogen chloride gas enters graphitic absorber A from graphitic absorber A sidewall,
Absorbing liquid enters graphitic absorber A from graphitic absorber A sidewall opposite side, absorbs the absorbing liquid of hydrogen chloride through graphitic absorber
A bottom pipe goes air stripping system, three grades of absorption systems of described hydrochloric acid also to include graphitic absorber B and tail gas absorber, described tail
Gas absorption tower liquid level is higher than liquid level in graphitic absorber B, and in graphitic absorber B, liquid level is higher than liquid level in graphitic absorber A；
The pipeline of the confession mixed gas circulation interconnected is set between graphitic absorber A and graphitic absorber B, sets simultaneously
Putting the pipeline of the confession absorbing liquid circulation interconnected, graphitic absorber B is by inhaling for the pipeline communication tail gas of mixed gas circulation
Receiving tower side lower, tail gas absorption top of tower arranges the evacuated tube being in communication with the outside, and described tail gas absorber top side wall is arranged
Entering the pipeline in tower for absorbing stock solution, place dry load in tail gas absorber, tail gas absorption tower bottom is by for absorbing liquid
The pipeline flowed out connects with graphitic absorber B.
It is to say, hydrogen chloride gas takes three grades of absorptions, the series connection of two-stage graphitic absorber to connect with tail gas absorber again,
The liquid level of rear stage equipment is above previous stage liquid level, and so by action of gravity, absorbing liquid can be carried out step by step
Absorb and without electric power pumping equipment, absorbing liquid is carried.Absorbing stock solution can be tap water, it is also possible to be saturated common salt
Other absorption liquid such as water.
Further, described graphitic absorber A and graphitic absorber B is falling-film absorber；
Conduit entrance for gaseous mixture entrance graphitic absorber A is arranged at the side wall upper part of graphitic absorber A, for gaseous mixture
The conduit entrance discharging graphitic absorber A is arranged at the lower sidewall of graphitic absorber A, flows into graphitic absorber A for absorbing liquid
Conduit entrance be arranged at the side wall upper part of graphitic absorber A；
Conduit entrance for gaseous mixture entrance graphitic absorber B is arranged at the side wall upper part of graphitic absorber B, for gaseous mixture
The conduit entrance discharging graphitic absorber B is arranged at the lower sidewall of graphitic absorber B, flows into graphitic absorber B for absorbing liquid
Conduit entrance be arranged at the side wall upper part of graphitic absorber B.
This is to increase absorption efficiency further, be also prevented from occurring simultaneously gaseous mixture enter in graphitic absorber A due to
Its hydrogen chloride content fluctuates and causes liquid refluence phenomenon, increases the stability of absorption system further.
Further, in three grades of absorption systems of described hydrochloric acid, graphitic absorber A, graphitic absorber B and tail gas absorber are each
The joint of individual absorbing liquid inlet/outlet pipe and gaseous mixture inlet/outlet pipe is respectively provided with corrugated tube and absorber and absorption tower Flange joint.The most just
It is to say that absorber and absorption tower use Flange joint when being attached with extraneous pipeline, and junction pipeline is corrugated tube.This
Sample can avoid absorption system variations in temperature to cause junction deformation even to rupture, and what reduction temperature and external force caused should
The power impact on equipment.
It is further preferred that remove to arrange in the middle of air stripping system hydrochloric acid storage tank bottom described graphitic absorber A.This is because it is mixed
Close hydrogen chloride content instability in gas, hydrochloric acid storage tank is set so that whole system is more stable.
During this utility model tetrachloroethylene produces, three grades of absorption systems of hydrochloric acid use graphitic absorbers to carry out double absorption, and two
Level absorption plant uses series system, and the tail gas after hydrogen chloride absorption is delivered to tail gas tower and processed, and is formed at third level tail gas
Reason, the mixed gas adapting to different hydrogen chloride content processes, and absorption process uses potential difference relation, allows gas flow up, liquid
Body flows downward, and without forcing power-equipment, energy-conserving and environment-protective, good absorbing effect, product concentration of hydrochloric acid is high, and reduces later stage tail gas
Processing cost, reduces the pollution to environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of three grades of absorption systems of hydrochloric acid during this utility model tetrachloroethylene produces.
Detailed description of the invention
It is described as follows with reference to Fig. 1: during a kind of tetrachloroethylene produces, three grades of absorption systems of hydrochloric acid include graphitic absorber
A2, the material mixed gas 1 being mixed with hydrogen chloride gas enters graphitic absorber A2 from graphitic absorber A2 sidewall, and absorbing liquid is from graphite
Absorber A2 sidewall opposite side enters graphitic absorber A2, absorbs the absorbing liquid of hydrogen chloride through graphitic absorber A2 bottom pipe
Air stripping system 7, three grades of absorption systems of described hydrochloric acid is gone also to include graphitic absorber B3 and tail gas absorber 5, described tail gas absorption
Tower 5 liquid level is higher than liquid level in graphitic absorber B3, and in graphitic absorber B3, liquid level is higher than liquid level in graphitic absorber A2；Graphite is inhaled
The absorption area receiving device A2 and graphitic absorber B3 is 90m2.Described graphitic absorber A2 top is higher than bottom graphitic absorber B3
1m, the bottom of described tail gas absorber 5 is than the high 0.5m in graphitic absorber B3 top.
The pipeline of the confession mixed gas circulation interconnected is set between graphitic absorber A2 and graphitic absorber B3, simultaneously
Arranging the pipeline of the confession absorbing liquid circulation interconnected, graphitic absorber B3 is by the pipeline communication tail gas for mixed gas circulation
Absorption tower 5 side lower, tail gas absorber 5 top arranges the evacuated tube being in communication with the outside, and evacuated tube connects subsequent processing, described
Tail gas absorber 5 top side wall is arranged for absorbing the pipeline in stock solution 4 i.e. tap water entrance tower, places and inhale in tail gas absorber 5
Receiving filler, bottom tail gas absorber 5, the pipeline by flowing out for absorbing liquid connects with graphitic absorber B3.
Described graphitic absorber A2 and graphitic absorber B3 is falling-film absorber；Enter graphite for material mixed gas 1 to inhale
The conduit entrance receiving device A2 is arranged at the side wall upper part of graphitic absorber A2, and the pipeline discharging graphitic absorber A2 for gaseous mixture enters
Mouth is arranged at the lower sidewall of graphitic absorber A2, and the conduit entrance flowing into graphitic absorber A2 for absorbing liquid is arranged at graphite suction
Receive the side wall upper part of device A2；The conduit entrance entering graphitic absorber B3 for gaseous mixture is arranged on the sidewall of graphitic absorber B3
Portion, the conduit entrance discharging graphitic absorber B3 for gaseous mixture is arranged at the lower sidewall of graphitic absorber B3, for absorbing liquid stream
The conduit entrance entering graphitic absorber B3 is arranged at the side wall upper part of graphitic absorber B3.
Graphitic absorber A2, graphitic absorber B3 and each absorption of tail gas absorber 5 in three grades of absorption systems of described hydrochloric acid
The joint of liquid inlet/outlet pipe and gaseous mixture inlet/outlet pipe is respectively provided with corrugated tube and absorber and absorption tower Flange joint.That is inhale
Receive when device and absorption tower are attached with extraneous pipeline and use Flange joint, and junction pipeline is corrugated tube.Described graphite
Go bottom absorber A2 to arrange hydrochloric acid storage tank 6 in the middle of air stripping system 7.The hydrochloric acid mean concentration using native system to process is 33%.
Claims (4)
1. three grades of absorption systems of hydrochloric acid during tetrachloroethylene produces, including graphitic absorber A (2), are mixed with the raw material of hydrogen chloride gas
Gaseous mixture (1) enters graphitic absorber A (2) from graphitic absorber A (2) sidewall, and absorbing liquid is another from graphitic absorber A (2) sidewall
Side enters graphitic absorber A (2), and the absorbing liquid absorbing hydrogen chloride goes air stripping system through graphitic absorber A (2) bottom pipe
(7), it is characterised in that: three grades of absorption systems of described hydrochloric acid also include graphitic absorber B (3) and tail gas absorber (5), described tail
Gas absorption tower (5) liquid level is higher than graphitic absorber B (3) interior liquid level, and graphitic absorber B (3) interior liquid level is higher than graphitic absorber A
(2) interior liquid level；
The pipeline of the confession mixed gas circulation interconnected is set between graphitic absorber A (2) and graphitic absorber B (3), simultaneously
Arranging the pipeline of the confession absorbing liquid circulation interconnected, graphitic absorber B (3) is by the pipeline communication tail for mixed gas circulation
Gas absorption tower (5) side lower, tail gas absorber (5) top arranges the evacuated tube being in communication with the outside, described tail gas absorber (5)
Top side wall is arranged for absorbing the pipeline in stock solution (4) entrance tower, places dry load, tail gas absorption in tail gas absorber (5)
Tower (5) bottom is connected with graphitic absorber B (3) by the pipeline flowed out for absorbing liquid.
Three grades of absorption systems of hydrochloric acid the most according to claim 1, it is characterised in that: described graphitic absorber A (2) and graphite
Absorber B (3) is falling-film absorber；
The conduit entrance entering graphitic absorber A (2) for material mixed gas (1) is arranged on the sidewall of graphitic absorber A (2)
Portion, the conduit entrance discharging graphitic absorber A (2) for gaseous mixture is arranged at the lower sidewall of graphitic absorber A (2), for absorbing
Liquid stream enters the conduit entrance of graphitic absorber A (2) and is arranged at the side wall upper part of graphitic absorber A (2)；
Conduit entrance for gaseous mixture entrance graphitic absorber B (3) is arranged at the side wall upper part of graphitic absorber B (3), for mixing
The conduit entrance of gas discharge graphitic absorber B (3) is arranged at the lower sidewall of graphitic absorber B (3), flows into graphite for absorbing liquid
The conduit entrance of absorber B (3) is arranged at the side wall upper part of graphitic absorber B (3).
Three grades of absorption systems of hydrochloric acid the most according to claim 2, it is characterised in that: stone in three grades of absorption systems of described hydrochloric acid
Connecing of ink absorber A (2), graphitic absorber B (3) and each absorbing liquid inlet/outlet pipe of tail gas absorber (5) and gaseous mixture inlet/outlet pipe
Corrugated tube and absorber and absorption tower Flange joint it is respectively provided with at Tou.
Three grades of absorption systems of hydrochloric acid the most according to claim 2, it is characterised in that: described graphitic absorber A (2) bottom is gone
In the middle of air stripping system (7), hydrochloric acid storage tank (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586107.3U CN205683808U (en) | 2016-06-16 | 2016-06-16 | Three grades of absorption systems of hydrochloric acid in tetrachloroethylene production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586107.3U CN205683808U (en) | 2016-06-16 | 2016-06-16 | Three grades of absorption systems of hydrochloric acid in tetrachloroethylene production |
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|---|---|
| CN205683808U true CN205683808U (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620586107.3U Active CN205683808U (en) | 2016-06-16 | 2016-06-16 | Three grades of absorption systems of hydrochloric acid in tetrachloroethylene production |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351132A (en) * | 2018-11-15 | 2019-02-19 | 四川金象赛瑞化工股份有限公司 | Gas absorption process, gas absorbing device and application thereof |
| CN112742182A (en) * | 2020-12-22 | 2021-05-04 | 南通润中石墨设备有限公司 | Gas-liquid separation system of HCL falling film absorber |
| CN115845651A (en) * | 2022-12-05 | 2023-03-28 | 金川集团股份有限公司 | Production device and method for medical high-purity hydrogen chloride organic solution |
-
2016
- 2016-06-16 CN CN201620586107.3U patent/CN205683808U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351132A (en) * | 2018-11-15 | 2019-02-19 | 四川金象赛瑞化工股份有限公司 | Gas absorption process, gas absorbing device and application thereof |
| CN112742182A (en) * | 2020-12-22 | 2021-05-04 | 南通润中石墨设备有限公司 | Gas-liquid separation system of HCL falling film absorber |
| CN112742182B (en) * | 2020-12-22 | 2022-11-04 | 南通润中石墨设备有限公司 | Gas-liquid separation system of HCL falling film absorber |
| CN115845651A (en) * | 2022-12-05 | 2023-03-28 | 金川集团股份有限公司 | Production device and method for medical high-purity hydrogen chloride organic solution |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |