CN103467240B - System for separating hydrogen chloride in coarse trichloroethylene - Google Patents
System for separating hydrogen chloride in coarse trichloroethylene Download PDFInfo
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- CN103467240B CN103467240B CN201310436369.2A CN201310436369A CN103467240B CN 103467240 B CN103467240 B CN 103467240B CN 201310436369 A CN201310436369 A CN 201310436369A CN 103467240 B CN103467240 B CN 103467240B
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- analytic tower
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- water pot
- trieline
- cooler
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Abstract
The invention discloses a system for separating hydrogen chloride in coarse trichloroethylene. The system comprises an analytic tower, a reboiler of the analytic tower, a reflux pump of the analytic tower, a return tank, a cooler and a gas trap, wherein the lower part of the analytic tower is connected with the reboiler of the analytic tower, the upper part of the analytic tower is respectively connected with the gas trap and the return tank through the cooler, the return tank is connected with the analytic tower through the reflux pump of the analytic tower, and an acid water removing tank is arranged between the cooler and the return tank. Furthermore, the acid water removing tank comprises a reflux inlet arranged at the top of the tank body, an overflow port arranged at the bottom of the tank body and an acid discharge port arranged on the side wall of the tank body. The acid water removing tank is connected with the cooler through the reflux inlet and is connected with the return tank through the overflow port. Acid liquor formed by inflow of the system is eliminated through the acid water removing tank in the system, and the condition that the acid liquor which circulates in the system to corrode parts in the system to cause breakdown of the system is avoided.
Description
Technical field
The present invention relates to chemical technology field, especially relate to a kind of system being separated hydrogenchloride in thick trieline.
Background technology
The tetrachloroethane sent here from last process send dehydrochlorination reaction device Pintsch process to generate trieline after vaporization, in reaction process, there is a large amount of hydrogen chloride gas to produce, the thick trieline obtained is isolated after hydrogenchloride through Analytic Tower, next procedure sent into by tower bottoms, refined product trieline.
As shown in Figure 3, the separation of hydrogen chloride gas is carried out in Analytic Tower, and the body material stripping section of Analytic Tower 1 is carbon steel, and rectifying section is enamel, and tower is built with ceramic filler.Thick trieline gas from dehydrochlorination reaction device enters Analytic Tower 1, and tower bottoms adds thermogenesis upflowing vapor by parsing reboiler 2 and fully contacts at filling surface with the liquid matter from return tank, carries out the object that mass-and heat-transfer reaches separating hydrogen chloride.Tower top contains organic hydrogen chloride gas through the full cooler 5 of one-level graphite, secondary graphite cooler 6, the liquid cooled down flows into return tank 4, squeeze into Analytic Tower by Analytic Tower reflux pump 3 again, hydrogen chloride gas sends into acid making system after gas trap 7, by HCl separation in thick trieline.
As there is logical leakage in any heat-exchange equipment of tetrachloroethane vaporizer of the Analytic Tower reboiler in this separation system, graphite cooler, Analytic Tower, system will be intake, the stronger hydrochloric acid of corrodibility is formed with hydrogen chloride gas, hydrochloric acid is at Analytic Tower internal recycle, corrosion Analytic Tower body and column internals, thus causing systemic breakdown, impact is produced.
Summary of the invention
Not enough for prior art, technical problem to be solved by this invention is to provide a kind of system being separated hydrogenchloride in thick trieline, and it can not be intake because of system, causes systemic breakdown.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of system being separated hydrogenchloride in thick trieline, comprise Analytic Tower, Analytic Tower reboiler, Analytic Tower reflux pump, return tank, water cooler, gas trap, described Analytic Tower bottom is connected with Analytic Tower reboiler, Analytic Tower top is connected with return tank with gas trap respectively by water cooler, return tank is connected with Analytic Tower by Analytic Tower reflux pump, is provided with deacidification water pot between described water cooler and return tank.
Further, described deacidification water pot comprises the phegma entrance being located at tank body top and the overflow port being located at tank base and the acid discharge mouth be located on tank wall, described deacidification water pot is connected with water cooler by phegma entrance, and described deacidification water pot is connected with return tank by overflow port.
The tank wall of described deacidification water pot is provided with glass visor.
The top of described deacidification water pot is provided with magnetic and stretches interface of the level gauge, is provided with Telescopic magnetic liquid meter in magnetic stretches interface of the level gauge.
The bottom of described deacidification water pot is provided with discharging hole.
The tank wall of described deacidification water pot is provided with the manhole that easy access workman enters.
The present invention compared with prior art, have the following advantages: by the deacidification water pot in system, the acid solution that system water inlet is formed is removed, prevent acid solution from circulating in systems in which, to component corrosion in system, avoid because system water inlet, cause systemic breakdown, system is stablized in process of production, long service life.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification sheets and the mark in figure are briefly described:
Fig. 1 is the system schematic that the present invention is separated hydrogenchloride in thick trieline.
Fig. 2 is deacidification pitcher configuration schematic diagram.
Fig. 3 is the system schematic of hydrogenchloride in the thick trieline of existing separation.
In figure: 1. Analytic Tower, 2. Analytic Tower reboiler, 3. Analytic Tower reflux pump, 4. return tank, the 5. full cooler of one-level graphite, 6. secondary graphite cooler, 7. gas trap, 8. deacidify water pot, 81. overflow ports, 82. manholes, 83. acid discharge mouths, 84. magnetic stretch interface of the level gauge, 85. phegma entrances, 86. glass visors, 87. discharging holes.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As depicted in figs. 1 and 2, the system of hydrogenchloride in the thick trieline of this separation, comprises Analytic Tower 1, Analytic Tower reboiler 2, Analytic Tower reflux pump 3, return tank 4, the full cooler 5 of one-level graphite, secondary graphite cooler 6, gas trap 7 and deacidification water pot 8, wherein, Analytic Tower 1 bottom is connected by pipeline with Analytic Tower reboiler 2, Analytic Tower 1 top is connected by pipeline with one-level graphite full cooler 5 top, be connected by pipeline with the phegma entrance 85 being located at water pot 8 top that deacidifies bottom the full cooler 5 of one-level graphite, one-level graphite full cooler 5 lower sides opening is connected by pipeline with secondary graphite cooler 6 top, be connected by pipeline with the phegma entrance at deacidification water pot 8 top bottom secondary graphite cooler 6, secondary graphite cooler 6 lower sides opening is connected with gas trap 7, hydrogen chloride gas is collected and is transported away, thus realize being separated, the bottom of gas trap 7 is connected with the top of deacidification water pot 8, overflow port 81 bottom deacidification water pot 8 is connected with return tank 4 top, is connected bottom return tank 4 by Analytic Tower reflux pump 3 with Analytic Tower 1 top.
The material of deacidification water pot 8 is frp lining resol, and the tank wall of deacidification water pot 8 is provided with highly different three acid discharge mouths 83 and three glass visors 86.And be provided with discharging hole 87 in the bottom of deacidification water pot 8; The tank wall of deacidification water pot 8 is provided with the manhole 82 that easy access workman enters.
Be provided with magnetic at the top of deacidification water pot 8 to stretch interface of the level gauge 84, in magnetic stretches interface of the level gauge 84, be provided with Telescopic magnetic liquid meter, judge the trieline in tank and hydrochloric acid layered position.
As system in the course of the work, intrasystem heat-exchange equipment is logical leaks water inlet, forms hydrochloric acid.The phegma cooled by two water coolers is thick trieline, and the proportion of liquid trieline is 1.46g/cm3, and 31% hydrochloric acid proportion is 1.15g/cm3, and hydrochloric acid and trieline do not dissolve each other, stratification, and hydrochloric acid is on upper strata.Imported in distributed control system by Telescopic magnetic liquid meter signal and judge liquid trieline and hydrochloric acid layered position, select the acid discharge mouth of different heights to discharge hydrochloric acid.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present invention and technical scheme are carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (5)
1. one kind is separated the system of hydrogenchloride in thick trieline, comprise Analytic Tower (1), Analytic Tower reboiler (2), Analytic Tower reflux pump (3), return tank (4), water cooler, gas trap (7), described Analytic Tower (1) bottom is connected with Analytic Tower reboiler (2), Analytic Tower (1) top is connected with return tank (4) with gas trap (7) respectively by water cooler, return tank (4) is connected with Analytic Tower (1) by Analytic Tower reflux pump (3), it is characterized in that: between described water cooler and return tank (4), be provided with the water pot (8) that deacidifies, described deacidification water pot (8) comprises the phegma entrance (85) being located at tank body top and the overflow port (81) being located at tank base and the acid discharge mouth (83) be located on tank wall, described deacidification water pot (8) is connected with water cooler by phegma entrance (85), and described deacidification water pot (8) is connected with return tank (4) by overflow port (81).
2. be separated the system of hydrogenchloride in thick trieline as claimed in claim 1, it is characterized in that: the tank wall of described deacidification water pot (8) is provided with glass visor (86).
3. be separated the system of hydrogenchloride in thick trieline as claimed in claim 1, it is characterized in that: the top of described deacidification water pot (8) is provided with magnetic and stretches interface of the level gauge (84), in magnetic stretches interface of the level gauge (84), be provided with Telescopic magnetic liquidometer.
4. be separated the system of hydrogenchloride in thick trieline as claimed in claim 1, it is characterized in that: the bottom of described deacidification water pot (8) is provided with discharging hole (87).
5. be separated the system of hydrogenchloride in thick trieline as claimed in claim 1, it is characterized in that: the tank wall of described deacidification water pot (8) is provided with the manhole (82) that easy access workman enters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310436369.2A CN103467240B (en) | 2013-09-23 | 2013-09-23 | System for separating hydrogen chloride in coarse trichloroethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310436369.2A CN103467240B (en) | 2013-09-23 | 2013-09-23 | System for separating hydrogen chloride in coarse trichloroethylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103467240A CN103467240A (en) | 2013-12-25 |
| CN103467240B true CN103467240B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310436369.2A Active CN103467240B (en) | 2013-09-23 | 2013-09-23 | System for separating hydrogen chloride in coarse trichloroethylene |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104445072B (en) * | 2014-10-31 | 2016-05-11 | 浙江衢州巨塑化工有限公司 | A kind of purifying plant of trichloro-ethylene by-product hydrogen chloride and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100591648C (en) * | 2006-12-27 | 2010-02-24 | 贵州蓝天化工有限公司 | Technique for coproducing polyvinyl chloride from by-product hydrogen chloride of trichloroethylene |
| CN102267868B (en) * | 2010-06-01 | 2013-06-19 | 滨化集团股份有限公司 | Industrial production apparatus for trichloroethylene |
| CN203513531U (en) * | 2013-09-23 | 2014-04-02 | 芜湖融汇化工有限公司 | System for separating hydrogen chloride in coarse trichloroethylene |
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| CN103467240A (en) | 2013-12-25 |
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