CN203440262U - Device for producing trans-1, 2-dichloroethylene with acetylene by adopting catalytic chlorination method - Google Patents
Device for producing trans-1, 2-dichloroethylene with acetylene by adopting catalytic chlorination method Download PDFInfo
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- CN203440262U CN203440262U CN201320544571.2U CN201320544571U CN203440262U CN 203440262 U CN203440262 U CN 203440262U CN 201320544571 U CN201320544571 U CN 201320544571U CN 203440262 U CN203440262 U CN 203440262U
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- ethylene dichloride
- tetrachloroethane
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- chlorination
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Abstract
The utility model relates to a device for producing trans-1, 2-dichloroethylene with acetylene by adopting the catalytic chlorination method and belongs to the field of chemical engineering equipment. The device comprises a chlorination tower, wherein an acetylene inlet and a chlorine inlet are formed in the bottom of the chlorination tower respectively; the chlorination tower is sequentially connected with a coarse tetrachloroethane tank, a tetrachloroethane rectifying tower, a dichloroethylene dehydrogenation tower and a dichloroethylene rectifying tower. According to the utility model, the trans-1, 2-dichloroethylene is produced through reaction of purified acetylene and the chlorine, and the trans-1, 2-dichloroethylene is fully utilized, so that the economic benefits of enterprises are improved, and the resources are saved for the society. The device is simple in structure, convenient to operate, environmentally friendly and safe, and easy to realize.
Description
Technical field
The utility model relates to the device that a kind of acetylene catalytic chlorination process is produced trans 1,2-dichloroethene, belongs to chemical plant installations field.
Background technology
Trans 1,2-dichloroethene is a kind of good solvent and industrial chemicals, the volatile liquid of colourless slightly irritating smell.Its main application is: as the solvent of paint, resin, wax, rubber, acetate fiber, for dry cleaning composition, sterilant, sterilant, narcotic, type low-temperature extraction agent and refrigerant etc., in a word, trans 1,2-dichloroethene is a kind of novel environmental protection organic solvent.Because trans 1,2-dichloroethene is of many uses, and to atmospheric layer without destruction, at the energy-conservation society of advocating environment protection, meaning is especially great.
Current trans 1,2-dichloroethene is all by preparing, and Chinese patent CN101747141A discloses a kind of production technique of trans 1,2-dichloroethene, and this technique is that acetylene and chloride reacting metal salt solution are produced to trans 1,2-dichloroethene.Abroad also have by 1,2-ethylene dichloride under the effect of oxychlorination catalyst with chlorine reaction generate 1,2,2-trichloroethane again dechlorination make the method for Ethylene Dichloride.Yet these two kinds of methods are all to synthesize main method.
Thereby my company produce the operational path of trieline be first adopt acetylene and chlorine reaction make tetrachloroethane again dehydrochlorination make trieline.When acetylene and chlorine reaction obtain tetrachloroethane, can accompany and produce the trans 1,2-dichloroethene of part, this part trans 1,2-dichloroethene form with low boiling mixture from system is removed, and it is not purified, and just as general chlorinated solvent, sells.Trans 1,2-dichloroethene owing to not making full use of in low boiling mixture, has caused the waste of social resources.
Utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide the acetylene catalytic chlorination process of a kind of simple in structure, operational safety, save energy to produce the device of trans 1,2-dichloroethene.
The utility model solves the technical scheme that its technical problem adopts:
Described acetylene catalytic chlorination process produces trans 1, the device of 2-Ethylene Dichloride, comprise chlorination tower, acetylene import, chlorine inlet are offered respectively in chlorination tower bottom, and chlorination tower is connected successively with thick tetrachloroethane tank, tetrachloroethane rectifying tower, Ethylene Dichloride lightness-removing column, Ethylene Dichloride rectifying tower.
Between described chlorination tower and thick tetrachloroethane tank, chlorination tower return tank is set, chlorination tower return tank is also connected with chlorination tower surge tank, chlorination tower water cooler respectively, and chlorination tower surge tank connects tail water and processes pump, and chlorination tower water cooler is connected with chlorination tower top.
Between described thick tetrachloroethane tank and tetrachloroethane rectifying tower, four alkane charge pumps are set.
Described tetrachloroethane rectifier bottoms connects smart tetrachloroethane tank, bottom arranges tetrachloroethane rectifying tower reboiler, top arranges tetrachloroethane rectifying tower return tank, tetrachloroethane rectifying tower one-level water cooler and tetrachloroethane rectifying tower secondary coolers are set on the pipeline between tetrachloroethane rectifying tower return tank and tetrachloroethane rectifying tower top, tetrachloroethane rectifying tower return tank is also connected with Ethylene Dichloride lightness-removing column middle part, and tetrachloroethane rectifying tower secondary coolers non-condensable gas drain is offered at tetrachloroethane rectifying tower secondary coolers top.
Described Ethylene Dichloride lightness-removing column bottom arranges Ethylene Dichloride lightness-removing column reboiler, bottom connects smart tetrachloroethane tank, Ethylene Dichloride lightness-removing column top arranges Ethylene Dichloride lightness-removing column return tank, Ethylene Dichloride lightness-removing column one-level water cooler, Ethylene Dichloride lightness-removing column secondary coolers are set on the pipeline between Ethylene Dichloride lightness-removing column return tank and Ethylene Dichloride lightness-removing column top, Ethylene Dichloride lightness-removing column return tank bottom connects Ethylene Dichloride rectifying tower middle part, and Ethylene Dichloride lightness-removing column secondary coolers non-condensable gas drain is offered at Ethylene Dichloride lightness-removing column secondary coolers top.
Described Ethylene Dichloride rectifier bottoms offers trans 1, the outlet of 2-Ethylene Dichloride, bottom arranges Ethylene Dichloride rectifying tower reboiler, top arranges Ethylene Dichloride rectifying tower return tank, Ethylene Dichloride rectifying tower one-level water cooler, Ethylene Dichloride rectifying tower secondary coolers are set on the pipeline between Ethylene Dichloride rectifying tower return tank and Ethylene Dichloride rectifying tower top, light constituent discharge port is offered in Ethylene Dichloride rectifying tower return tank bottom, and Ethylene Dichloride rectifying tower secondary coolers non-condensable gas drain is offered at Ethylene Dichloride rectifying tower secondary coolers top.
During production, dried acetylene gas and the chlorine after purifying are from chlorination tower bottom feed, in chlorination tower, in tetrachloroethane mother liquor, using iron trichloride as catalyzer, addition reaction occurs, generate tetrachloroethane, at chlorination tower top after condensation, in the situation that having backflow, by tetrachloroethane extraction, to thick tetrachloroethane tank, non-condensable gas is after surge tank, utilize vent gas treatment pump to take system out of, the operation of chlorination tower negative pressure.The trans 1,2-dichloroethene object product that contains association in thick tetrachloroethane.
Thick tetrachloroethane enters tetrachloroethane rectifying tower through four alkane charge pumps, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, low boiling mixture in thick tetrachloroethane with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction enters Ethylene Dichloride lightness-removing column, and non-condensable gas is processed rear emptying, and at the bottom of tower, the extraction of essence tetrachloroethane is to smart tetrachloroethane tank.
The low boiling mixture of tetrachloroethane rectifying tower top extraction enters Ethylene Dichloride lightness-removing column, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, by low boiling mixture with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction is to Ethylene Dichloride rectifying tower, and non-condensable gas is processed rear emptying, and materials at bottom of tower enters Ethylene Dichloride rectifying tower.
The material of Ethylene Dichloride lightness-removing column top extraction enters Ethylene Dichloride rectifying tower, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, by the light constituent in low boiling mixture with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction is to tank field, and non-condensable gas is processed rear emptying, materials at bottom of tower is the trans 1,2-dichloroethene of object product.
The utility model, by changing the catalyzer of acetylene, chlorine addition reaction, can improve trans 1,2-dichloroethene association ratio.
The beneficial effect that the utility model has is:
The trans 1,2-dichloroethene that the utility model produces by purification acetylene and chlorine reaction companion, is fully utilized trans 1,2-dichloroethene, has not only increased Business Economic Benefit, and has saved resource for society.The utility model is simple in structure, easy to operate, Environmental Safety, be easy to realize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, tail water is processed pump; 2, chlorination tower surge tank; 3, chlorination tower water cooler; 4, chlorination tower; 5, chlorination tower return tank; 6, acetylene import; 7, chlorine inlet; 8, thick tetrachloroethane tank; 9, four alkane charge pumps; 10, tetrachloroethane rectifying tower secondary coolers non-condensable gas drain; 11, tetrachloroethane rectifying tower one-level water cooler; 12, tetrachloroethane rectifying tower secondary coolers; 13, tetrachloroethane rectifying tower return tank; 14, tetrachloroethane rectifying tower; 15, tetrachloroethane rectifying tower reboiler; 16, smart tetrachloroethane tank; 17, Ethylene Dichloride lightness-removing column secondary coolers non-condensable gas drain; 18, Ethylene Dichloride lightness-removing column one-level water cooler; 19, Ethylene Dichloride lightness-removing column secondary coolers; 20, Ethylene Dichloride lightness-removing column return tank; 21, light constituent discharge port; 22, Ethylene Dichloride lightness-removing column; 23, Ethylene Dichloride lightness-removing column reboiler; 24, Ethylene Dichloride rectifying tower secondary coolers non-condensable gas drain; 25, Ethylene Dichloride rectifying tower one-level water cooler; 26, Ethylene Dichloride rectifying tower secondary coolers; 27, Ethylene Dichloride rectifying tower return tank; 28, trans 1,2-dichloroethene outlet; 29, Ethylene Dichloride rectifying tower; 30, Ethylene Dichloride rectifying tower reboiler.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, described acetylene catalytic chlorination process produces trans 1, the device of 2-Ethylene Dichloride is as follows: this device comprises chlorination tower 4, chlorination tower 4 is connected with thick tetrachloroethane tank 8, tetrachloroethane rectifying tower 14, Ethylene Dichloride lightness-removing column 22, Ethylene Dichloride rectifying tower 29 successively by pipeline, and acetylene import 6, chlorine inlet 7 are offered respectively in chlorination tower 4 bottoms.
Whole device can be divided into 4 working cells:
1, chlorination unit:
Between chlorination tower 4 and thick tetrachloroethane tank 8, chlorination tower return tank 5 is set, chlorination tower return tank 5 also connects respectively chlorination tower surge tank 2, chlorination tower water cooler 3, and chlorination tower surge tank 2 connects tail water and processes pump 1, and chlorination tower water cooler 3 is connected with chlorination tower 4 tops.
Between thick tetrachloroethane tank 8 and tetrachloroethane rectifying tower 14, four alkane charge pumps 9 are set.
2, tetrachloroethane rectification cell:
Tetrachloroethane rectifying tower 14 bottoms connect smart tetrachloroethane tank 16, bottom connects tetrachloroethane rectifying tower reboiler 15, top connects tetrachloroethane rectifying tower return tank 13, tetrachloroethane rectifying tower one-level water cooler 11 and tetrachloroethane rectifying tower secondary coolers 12 are set on the pipeline between tetrachloroethane rectifying tower return tank 13 and tetrachloroethane rectifying tower 14 tops, tetrachloroethane rectifying tower return tank 13 is also connected with Ethylene Dichloride lightness-removing column 22 middle parts, and tetrachloroethane rectifying tower secondary coolers non-condensable gas drain 10 is offered at tetrachloroethane rectifying tower secondary coolers 12 tops.
3, the de-light unit of Ethylene Dichloride:
Ethylene Dichloride lightness-removing column 22 bottoms arrange Ethylene Dichloride lightness-removing column reboiler 23, bottom connects smart tetrachloroethane tank 16, Ethylene Dichloride lightness-removing column 22 tops arrange Ethylene Dichloride lightness-removing column return tank 20, Ethylene Dichloride lightness-removing column one-level water cooler 18 is set on the pipeline between Ethylene Dichloride lightness-removing column return tank 20 and Ethylene Dichloride lightness-removing column 22 tops, Ethylene Dichloride lightness-removing column secondary coolers 19, Ethylene Dichloride lightness-removing column return tank 20 bottoms connect Ethylene Dichloride rectifying tower 29 middle parts, Ethylene Dichloride lightness-removing column secondary coolers non-condensable gas drain 17 is offered at Ethylene Dichloride lightness-removing column secondary coolers 19 tops.
4, Ethylene Dichloride rectification cell:
Ethylene Dichloride rectifying tower 29 bottoms offer trans 1,2-Ethylene Dichloride outlet 28, bottom arranges Ethylene Dichloride rectifying tower reboiler 30, top arranges Ethylene Dichloride rectifying tower return tank 27, Ethylene Dichloride rectifying tower one-level water cooler 25, Ethylene Dichloride rectifying tower secondary coolers 26 are set on the pipeline between Ethylene Dichloride rectifying tower return tank 27 and Ethylene Dichloride rectifying tower 29 tops, light constituent discharge port 21 is offered in Ethylene Dichloride rectifying tower return tank 27 bottoms, and Ethylene Dichloride rectifying tower secondary coolers non-condensable gas drain 24 is offered at Ethylene Dichloride rectifying tower secondary coolers 26 tops.
The working process of whole device is as follows:
1, chlorination unit:
Dried acetylene gas and the chlorine after purifying are from chlorination tower 4 bottom feeds, in the interior tetrachloroethane mother liquor of chlorination tower 4, using iron trichloride as catalyzer, there is addition reaction, generate tetrachloroethane, at chlorination tower 4 tops after 3 condensations of chlorination tower water cooler, in the situation that having backflow, by the extremely thick tetrachloroethane tank 8 of tetrachloroethane extraction, non-condensable gas, after chlorination tower surge tank 2, utilizes vent gas treatment pump 1 to take system out of, chlorination tower 4 negative pressure operations.
2, tetrachloroethane rectification cell:
Thick tetrachloroethane enters tetrachloroethane rectifying tower 14 through four alkane charge pumps 9, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, low boiling mixture in thick tetrachloroethane with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction enters Ethylene Dichloride lightness-removing column 22, and non-condensable gas is processed rear emptying, and at the bottom of tower, the extraction of essence tetrachloroethane is to smart tetrachloroethane tank 16.
3, the de-light unit of Ethylene Dichloride:
The low boiling mixture of tetrachloroethane rectifying tower top extraction enters Ethylene Dichloride lightness-removing column 22, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, by in low boiling mixture with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction is to Ethylene Dichloride rectifying tower 29, and non-condensable gas is processed rear emptying, and materials at bottom of tower enters smart tetrachloroethane tank 16.
4, Ethylene Dichloride rectification cell:
The material of Ethylene Dichloride lightness-removing column top extraction enters Ethylene Dichloride rectifying tower 29, after the heating of tower reactor reboiler, in tower, gas-liquid two-phase is through mass transfer, heat transfer, by the light constituent in low boiling mixture with gas phase form from tower top after two-stage is cooling, partial reflux, part extraction is to tank field, and non-condensable gas is processed rear emptying, materials at bottom of tower is as the trans 1,2-dichloroethene of object product.
Claims (6)
1. an acetylene catalytic chlorination process produces trans 1, the device of 2-Ethylene Dichloride, comprise chlorination tower (4), acetylene import (6), chlorine inlet (7) are offered respectively in chlorination tower (4) bottom, it is characterized in that: chlorination tower (4) is connected successively with thick tetrachloroethane tank (8), tetrachloroethane rectifying tower (14), Ethylene Dichloride lightness-removing column (22), Ethylene Dichloride rectifying tower (29).
2. acetylene catalytic chlorination process according to claim 1 produces trans 1, the device of 2-Ethylene Dichloride, it is characterized in that: between chlorination tower (4) and thick tetrachloroethane tank (8), chlorination tower return tank (5) is set, chlorination tower return tank (5) is also connected with chlorination tower surge tank (2), chlorination tower water cooler (3) respectively, chlorination tower surge tank (2) connects tail water and processes pump (1), and chlorination tower water cooler (3) is connected with chlorination tower (4) top.
3. acetylene catalytic chlorination process according to claim 2 is produced the device of trans 1,2-dichloroethene, it is characterized in that: between thick tetrachloroethane tank (8) and tetrachloroethane rectifying tower (14), four alkane charge pumps (9) are set.
4. according to claim 1, acetylene catalytic chlorination process described in 2 or 3 produces trans 1, the device of 2-Ethylene Dichloride, it is characterized in that: tetrachloroethane rectifying tower (14) bottom connects smart tetrachloroethane tank (16), bottom arranges tetrachloroethane rectifying tower reboiler (15), top arranges tetrachloroethane rectifying tower return tank (13), on pipeline between tetrachloroethane rectifying tower return tank (13) and tetrachloroethane rectifying tower (14) top, tetrachloroethane rectifying tower one-level water cooler (11) and tetrachloroethane rectifying tower secondary coolers (12) are set, tetrachloroethane rectifying tower return tank (13) is also connected with Ethylene Dichloride lightness-removing column (22) middle part, tetrachloroethane rectifying tower secondary coolers non-condensable gas drain (10) is offered at tetrachloroethane rectifying tower secondary coolers (12) top.
5. acetylene catalytic chlorination process according to claim 4 produces trans 1, the device of 2-Ethylene Dichloride, it is characterized in that: Ethylene Dichloride lightness-removing column (22) bottom arranges Ethylene Dichloride lightness-removing column reboiler (23), bottom connects smart tetrachloroethane tank (16), Ethylene Dichloride lightness-removing column (22) top arranges Ethylene Dichloride lightness-removing column return tank (20), on pipeline between Ethylene Dichloride lightness-removing column return tank (20) and Ethylene Dichloride lightness-removing column (22) top, Ethylene Dichloride lightness-removing column one-level water cooler (18) is set, Ethylene Dichloride lightness-removing column secondary coolers (19), Ethylene Dichloride lightness-removing column return tank (20) bottom connects Ethylene Dichloride rectifying tower (29) middle part, Ethylene Dichloride lightness-removing column secondary coolers non-condensable gas drain (17) is offered at Ethylene Dichloride lightness-removing column secondary coolers (19) top.
6. acetylene catalytic chlorination process according to claim 5 produces trans 1, the device of 2-Ethylene Dichloride, it is characterized in that: Ethylene Dichloride rectifying tower (29) bottom offers trans 1, 2-Ethylene Dichloride outlet (28), bottom arranges Ethylene Dichloride rectifying tower reboiler (30), top arranges Ethylene Dichloride rectifying tower return tank (27), on pipeline between Ethylene Dichloride rectifying tower return tank (27) and Ethylene Dichloride rectifying tower (29) top, Ethylene Dichloride rectifying tower one-level water cooler (25) is set, Ethylene Dichloride rectifying tower secondary coolers (26), Ethylene Dichloride rectifying tower return tank (27) is offered light constituent discharge port (21), Ethylene Dichloride rectifying tower secondary coolers non-condensable gas drain (24) is offered at Ethylene Dichloride rectifying tower secondary coolers (26) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320544571.2U CN203440262U (en) | 2013-09-03 | 2013-09-03 | Device for producing trans-1, 2-dichloroethylene with acetylene by adopting catalytic chlorination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320544571.2U CN203440262U (en) | 2013-09-03 | 2013-09-03 | Device for producing trans-1, 2-dichloroethylene with acetylene by adopting catalytic chlorination method |
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| CN203440262U true CN203440262U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320544571.2U Expired - Lifetime CN203440262U (en) | 2013-09-03 | 2013-09-03 | Device for producing trans-1, 2-dichloroethylene with acetylene by adopting catalytic chlorination method |
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| CN (1) | CN203440262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054546A (en) * | 2019-03-18 | 2019-07-26 | 浙江师范大学 | A kind of production technology of trans- 1,2- dichloroethylene |
| CN112961026A (en) * | 2021-02-08 | 2021-06-15 | 宁夏普瑞化工有限公司 | Acetylene purification linkage control type trans-1, 2-dichloroethylene preparation system |
-
2013
- 2013-09-03 CN CN201320544571.2U patent/CN203440262U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054546A (en) * | 2019-03-18 | 2019-07-26 | 浙江师范大学 | A kind of production technology of trans- 1,2- dichloroethylene |
| CN110054546B (en) * | 2019-03-18 | 2021-10-15 | 浙江师范大学 | Production process of trans-1, 2-dichloroethylene |
| CN112961026A (en) * | 2021-02-08 | 2021-06-15 | 宁夏普瑞化工有限公司 | Acetylene purification linkage control type trans-1, 2-dichloroethylene preparation system |
| CN112961026B (en) * | 2021-02-08 | 2023-01-06 | 宁夏普瑞化工有限公司 | Acetylene purification linkage control type trans-1, 2-dichloroethylene preparation system |
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Granted publication date: 20140219 |
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| CX01 | Expiry of patent term |