CN210729087U - Carbon dioxide device is handled to chloroethylene synthetic gas - Google Patents
Carbon dioxide device is handled to chloroethylene synthetic gas Download PDFInfo
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- CN210729087U CN210729087U CN201921267701.6U CN201921267701U CN210729087U CN 210729087 U CN210729087 U CN 210729087U CN 201921267701 U CN201921267701 U CN 201921267701U CN 210729087 U CN210729087 U CN 210729087U
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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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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to a carbon dioxide device is handled to chloroethylene synthetic gas, including chloroethylene synthesizer, the wash column, first compressor, pressure swing adsorption device and chloroethylene rectification device, middle part one side of wash column is connected with the chloroethylene synthesizer, the entry end of first compressor is connected and is linked together through the top of washing pipeline with the wash column, the exit end and the entry end of pressure swing adsorption device of first compressor are connected and are linked together, be equipped with synthetic gas exit end and carbon dioxide exit end on the pressure swing adsorption device, the synthetic gas exit end is through the entry end intercommunication of the pipeline of giving vent to anger with chloroethylene rectification device, the carbon dioxide exit end is equipped with carbon dioxide collection device, carbon dioxide collection device's entry end and carbon dioxide exit end intercommunication. The utility model discloses a vinyl chloride synthetic gas that obtains in the vinyl chloride synthesizer passes through scrubbing tower and pressure swing adsorption equipment in proper order, and hydrogen chloride and carbon dioxide that can be among the effectual synthetic gas are got rid of, improve monomer content in the synthetic gas.
Description
Technical Field
The utility model relates to a chloroethylene synthesis technology field especially relates to a carbon dioxide device is handled to chloroethylene synthesis gas.
Background
In the process of preparing vinyl chloride by using a calcium carbide method for producing polyvinyl chloride, mercuric chloride is used as a catalyst in a synthesis reaction, and besides vinyl chloride, a large amount of hydrogen chloride, unreacted acetylene, nitrogen, hydrogen, carbon dioxide and other gases, acetaldehyde, dichloroethane, dichloroethylene, trichloroethylene and other miscellaneous gases produced by conversion side reactions are contained in the reacted gases. In order to produce monomers of high purity suitable for polymerization, these impurities are thoroughly removed and the hydrogen chloride in the synthesis gas is removed after washing with water, but the presence of a certain amount of carbon dioxide increases the amount of inert gas, making gas separation difficult, increasing the loss of vinyl chloride in the evacuated off-gas and removing the carbon dioxide by alkaline washing. Alkaline washing is a chemical absorption operation in which chemical reactions take place. In the actual production process, after the dilute solution of sodium hydroxide is used as the chemical absorbent, the waste alkali liquor is polluted by mercury, and the recycling is difficult. The mercury-containing waste alkaline water is discharged to the outside, causes mercury pollution to the external environment, and causes harm to the health of people and the natural environment
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem and provide a chloroethylene synthetic gas treatment carbon dioxide device that carbon dioxide and hydrogen chloride in to the chloroethylene synthetic gas were handled to solve above-mentioned at least one technical problem.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
the utility model provides a carbon dioxide device is handled to chloroethylene synthetic gas, includes chloroethylene synthesizer, washing tower, first compressor, pressure swing adsorption device and chloroethylene rectifier unit, middle part one side of washing tower with chloroethylene synthesizer is connected, the entry end of first compressor pass through the washing pipeline with the top of washing tower is connected and is communicate, the exit end of first compressor with pressure swing adsorption device's entry end is connected and is communicated, last synthetic gas exit end and the carbon dioxide exit end of being equipped with of pressure swing adsorption device, the synthetic gas exit end through the pipeline of giving vent to anger with chloroethylene rectifier unit's entry end intercommunication, the carbon dioxide exit end is equipped with carbon dioxide collection device, carbon dioxide collection device's entry end with carbon dioxide exit end intercommunication.
The utility model has the advantages that: the utility model discloses a vinyl chloride synthetic gas that obtains in the vinyl chloride synthesizer carries to vinyl chloride rectifier unit behind washing tower and pressure swing adsorption device in proper order, can effectually drop the hydrogen chloride in the synthetic gas earlier, and hydrogen chloride avoids causing the corruption to pressure swing adsorption device when subsequent processing carbon dioxide, and influences the problem of carbon dioxide and synthetic gas separation.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the pipeline of giving vent to anger includes first pipeline and the second pipeline of giving vent to anger, the synthetic gas exit end with be equipped with the second compressor between the chloroethylene rectifier unit, the entry end of second compressor passes through first pipeline with the synthetic gas exit end intercommunication of giving vent to anger, the exit end of second compressor passes through the second give vent to anger the pipeline with the entry end intercommunication of chloroethylene rectifier unit.
The beneficial effect of adopting the further scheme is that: the second compressor can compress the synthetic gas, so that the synthetic gas enters the vinyl chloride rectification device in a liquid state, and vinyl chloride monomer can be obtained better.
Further, the outlet pressure of the second compressor is 0.5Mpa to 0.6 Mpa.
The beneficial effect of adopting the further scheme is that: under the pressure of 0.5MPa to 0.6MPa, the chloroethylene gas can be liquefied, and the rectification treatment is convenient.
Furthermore, the first air outlet pipeline comprises a first air outlet pipeline A and a first air outlet pipeline B, a cooler is arranged between the second compressor and the synthesis gas outlet end, the inlet end of the cooler is communicated with the synthesis gas outlet end through the first air outlet pipeline A, and the outlet end of the cooler is communicated with the inlet end of the second compressor through the first air outlet pipeline B.
The beneficial effect of adopting the further scheme is that: the cooler can cool down the synthetic gas that comes out by pressure swing adsorption device's synthetic gas exit end to produce high temperature in the reduction second compressor compression process, cause the influence to vinyl chloride.
Further, the washing pipeline includes first washing pipeline and second washing pipeline, the top of washing tower with be equipped with the defroster that is arranged in getting rid of moisture among the synthetic gas between the first compressor, the entry end of defroster passes through first washing pipeline with the top intercommunication of washing tower, the exit end of defroster passes through second washing pipeline with the entry end intercommunication of first compressor.
The beneficial effect of adopting the further scheme is that: the defroster can get rid of the moisture in the synthetic gas through the scrubbing tower, prevents that moisture in the synthetic gas from causing the interference to pressure swing adsorption processing carbon dioxide.
Further, a washing circulating pump is arranged on the side of the washing tower, the inlet end of the washing circulating pump is connected and communicated with the bottom of the side of the washing tower, and the outlet end of the washing circulating pump is connected and communicated with the top of the side of the washing tower.
The beneficial effect of adopting the further scheme is that: and circulating the water scrubbing liquid in the water scrubbing tower by using a circulating pump, so that the water in the water scrubbing tower fully absorbs the hydrogen chloride gas in the synthesis gas.
Further, the outlet pressure of the first compressor is 0.7 MPa.
The beneficial effect of adopting the further scheme is that: the first compressor pressurizes the synthesis gas to 0.7Mpa, which can facilitate the pressure swing adsorption device to effectively remove carbon dioxide in the synthesis gas.
Drawings
Fig. 1 is a flow chart of the structure of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. chloroethylene synthesizer, 2, washing tower, 3, defroster, 4, first compressor, 5, pressure swing adsorption device, 6, cooler, 7, second compressor, 8, washing circulating pump, 9, carbon dioxide collection device, 10, carbon dioxide end of giving vent to anger, 11, synthetic gas end of giving vent to anger, 12, chloroethylene rectifier unit.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Examples
As shown in FIG. 1, the device for processing carbon dioxide by using chloroethylene synthesis gas of the present invention comprises a chloroethylene synthesis device 1, a first compressor 4, washing tower 2, pressure swing adsorption equipment 5 and chloroethylene rectification device 12, middle part one side of washing tower 2 is connected with chloroethylene synthesizer 1, the entry end of first compressor 4 is connected and is linked together through the top of washing pipeline with washing tower 2, the exit end of first compressor 4 is connected and is linked together with pressure swing adsorption equipment 5's entry end, first compressor 4's outlet pressure is 0.7MPa, be equipped with synthetic gas exit end 11 and carbon dioxide exit end 10 on the pressure swing adsorption equipment 5, synthetic gas exit end 11 links to each other with chloroethylene rectification device 12 through the pipeline of giving vent to anger, carbon dioxide exit end 10 is equipped with carbon dioxide collection device 9, carbon dioxide collection device 9's entry end links to each other with carbon dioxide exit end 10. The chloroethylene synthetic gas obtained in the chloroethylene synthesis device 1 sequentially passes through the water washing tower 2 and the pressure swing adsorption device 5 and then is conveyed to the chloroethylene rectification device 12, so that the hydrogen chloride in the synthetic gas can be effectively treated firstly, and the problem that the hydrogen chloride corrodes the pressure swing adsorption device 5 during subsequent carbon dioxide treatment and affects the separation of the carbon dioxide and the synthetic gas is avoided.
The gas outlet pipeline comprises a first gas outlet pipeline and a second gas outlet pipeline, a second compressor 7 is arranged between a synthetic gas outlet end 11 and a chloroethylene rectifying device 12, the inlet end of the second compressor 7 is connected with the outlet end of a synthesizer through the first gas outlet pipeline, the outlet end of the second compressor 7 is connected with the inlet end of the chloroethylene rectifying device 12 through the second gas outlet pipeline, the outlet pressure of the second compressor 7 is 0.5Mpa to 0.6Mpa, the processed synthetic gas is compressed into liquid, and the liquid is conveyed to the chloroethylene rectifying device 12. The second compressor 7 can compress the synthesis gas from 0.5Mpa to 0.6Mpa, so that the synthesis gas enters the vinyl chloride rectification device 12 in a liquid state, and thus vinyl chloride monomer can be obtained better.
The first gas outlet pipeline comprises a first gas outlet pipeline A and a first gas outlet pipeline B, a cooler 6 is arranged between the second compressor 7 and the synthesis gas outlet end 11, the inlet end of the cooler 6 is communicated with the synthesis gas outlet end 11 through the first gas outlet pipeline A, the outlet end of the cooler 6 is connected with the inlet end of the second compressor 7 through the first gas outlet pipeline B, the synthesis gas at the synthesis gas outlet end 11 is cooled to 40-45 ℃ through the cooler 6, and the second compressor 7 can compress the synthesis gas to be sent to the chloroethylene rectifying device 12 conveniently. The cooler 6 can cool the synthesis gas discharged from the synthesis gas outlet end of the pressure swing adsorption device 5 so as to reduce the influence on the vinyl chloride caused by high temperature generated in the compression process of the second compressor 7
The washing pipeline includes first washing pipeline and second washing pipeline, be equipped with the defroster 3 that is arranged in getting rid of moisture in the synthetic gas between the top of washing tower 2 and first compressor 4, the entry end of defroster 3 is through the top intercommunication of first washing pipeline with washing tower 2, the exit end of defroster 3 passes through the entry end intercommunication of second washing pipeline with first compressor 4, when the water absorption hydrogen chloride concentration in the washing tower 2 reaches 30%, discharge hydrochloric acid in the washing tower 2, and the new absorption water of benefit into. The demister 3 can remove moisture in the synthesis gas passing through the water scrubber 2, and prevent the moisture in the synthesis gas from interfering with the treatment of carbon dioxide by the pressure swing adsorption device 5.
2 sides of washing tower are equipped with washing circulating pump 8, and washing circulating pump 8's entry end is connected and is communicate with the side bottom of washing tower 2, and washing circulating pump 8's exit end is connected and is communicated with the side top of washing tower 2. The water washing circulating pump 8 circulates the water washing liquid in the water washing tower 2, so that the water in the water washing tower 2 can fully absorb the hydrogen chloride gas in the synthesis gas.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The utility model provides a carbon dioxide device is handled to chloroethylene synthetic gas, its characterized in that, including chloroethylene synthesizer (1), washing tower (2), first compressor (4), pressure swing adsorption device (5) and chloroethylene rectifier unit (12), middle part one side of washing tower (2) with chloroethylene synthesizer (1) is connected, the entry end of first compressor (4) through the washing pipeline with the top of washing tower (2) is connected and is communicate, the exit end of first compressor (4) with the entry end of pressure swing adsorption device (5) is connected and is communicate, be equipped with synthetic gas exit end (11) and carbon dioxide exit end (10) on pressure swing adsorption device (5), synthetic gas exit end (11) through the pipeline of giving vent to anger with the entry end intercommunication of chloroethylene rectifier unit (12), carbon dioxide exit end (10) are equipped with carbon dioxide collection device (9), the inlet end of the carbon dioxide collecting device (9) is communicated with the carbon dioxide outlet end (10).
2. The device for treating carbon dioxide by using vinyl chloride synthesis gas as claimed in claim 1, wherein the gas outlet pipeline comprises a first gas outlet pipeline and a second gas outlet pipeline, a second compressor (7) is arranged between the synthesis gas outlet end (11) and the vinyl chloride rectification device (12), the inlet end of the second compressor (7) is communicated with the synthesis gas outlet end (11) through the first gas outlet pipeline, and the outlet end of the second compressor (7) is communicated with the inlet end of the vinyl chloride rectification device (12) through the second gas outlet pipeline.
3. A vinyl chloride synthesis gas processing carbon dioxide plant according to claim 2, characterized in that the outlet pressure of the second compressor (7) is 0.5Mpa to 0.6 Mpa.
4. A vinyl chloride synthesis gas carbon dioxide processing apparatus according to claim 2, wherein the first gas outlet pipeline comprises a first gas outlet pipeline a and a first gas outlet pipeline B, a cooler (6) is provided between the second compressor (7) and the synthesis gas outlet end (11), an inlet end of the cooler (6) is communicated with the synthesis gas outlet end (11) through the first gas outlet pipeline a, and an outlet end of the cooler (6) is communicated with an inlet end of the second compressor (7) through the first gas outlet pipeline B.
5. The device for treating carbon dioxide by using vinyl chloride synthesis gas as claimed in any one of claims 1 to 4, wherein the water washing pipeline comprises a first water washing pipeline and a second water washing pipeline, a demister (3) for removing moisture in the synthesis gas is arranged between the top of the water washing tower (2) and the first compressor (4), the inlet end of the demister (3) is communicated with the top of the water washing tower (2) through the first water washing pipeline, and the outlet end of the demister (3) is communicated with the inlet end of the first compressor (4) through the second water washing pipeline.
6. The device for processing carbon dioxide by using the vinyl chloride synthesis gas as claimed in claim 5, wherein a washing circulating pump (8) is arranged on the side of the washing tower (2), the inlet end of the washing circulating pump (8) is connected and communicated with the bottom of the washing tower (2), and the outlet end of the washing circulating pump (8) is connected and communicated with the top of the washing tower (2).
7. A vinyl chloride synthesis gas processing carbon dioxide plant according to claim 5, characterized in that the outlet pressure of the first compressor (4) is 0.7 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267701.6U CN210729087U (en) | 2019-08-06 | 2019-08-06 | Carbon dioxide device is handled to chloroethylene synthetic gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267701.6U CN210729087U (en) | 2019-08-06 | 2019-08-06 | Carbon dioxide device is handled to chloroethylene synthetic gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210729087U true CN210729087U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921267701.6U Active CN210729087U (en) | 2019-08-06 | 2019-08-06 | Carbon dioxide device is handled to chloroethylene synthetic gas |
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| Country | Link |
|---|---|
| CN (1) | CN210729087U (en) |
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2019
- 2019-08-06 CN CN201921267701.6U patent/CN210729087U/en active Active
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