CN219771808U - Mother liquor water comprehensive utilization system in calcium carbide process polyvinyl chloride production - Google Patents
Mother liquor water comprehensive utilization system in calcium carbide process polyvinyl chloride production Download PDFInfo
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- CN219771808U CN219771808U CN202321318616.4U CN202321318616U CN219771808U CN 219771808 U CN219771808 U CN 219771808U CN 202321318616 U CN202321318616 U CN 202321318616U CN 219771808 U CN219771808 U CN 219771808U
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- water
- mother liquor
- filter
- outlet pipe
- collecting tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 239000012452 mother liquor Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 19
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 18
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 13
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 31
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 24
- 238000011010 flushing procedure Methods 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 abstract description 5
- 239000008213 purified water Substances 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to the technical field of comprehensive utilization of mother liquor water, in particular to a comprehensive utilization system of mother liquor water in the production of polyvinyl chloride by a calcium carbide method. Including the dry mother liquor collecting tank that is located the dry process, the delivery port of dry mother liquor collecting tank is connected with first water pump, be connected with first filter on the delivery port of first water pump, be connected with first outlet pipe on the delivery port of first filter respectively, the second outlet pipe, third outlet pipe and fourth outlet pipe, be connected with the subsystem that washes that is located the polymerization process on the first outlet pipe, be connected with the mother liquor filtration subsystem that recycles on the second outlet pipe, be connected with the pulse water pipe on the output of the mother liquor filtration subsystem that recycles, the third outlet pipe extends to in the sedimentation tank in the acetylene process, the fourth outlet pipe extends to stripper department. Through the structure of four water outlet pipes, mother liquor water is filtered for multiple times and is utilized for multiple times, so that the use of purified water is reduced, the cost is reduced, the sewage is not required to be directly discharged, the multi-stage utilization is realized, and the pollution discharge burden is reduced.
Description
Technical Field
The utility model relates to the technical field of comprehensive utilization of mother liquor water, in particular to a comprehensive utilization system of mother liquor water in the production of polyvinyl chloride by a calcium carbide method.
Background
Polyvinyl chloride (PVC) is a thermoplastic synthetic resin material widely used in industry, agriculture and daily life. Because of their excellent properties, conventional materials such as metals are gradually replaced in many fields, and PVC production is also gradually increased year by year, industrial polyvinyl chloride production is mainly divided into processes of acetylene, polymerization, stripping, drying, packaging, and the like, a large amount of mother liquor wastewater is produced in the production process, and a large amount of mother liquor water is only partially recovered for stripping tower flushing water, and the surplus is discharged to a sewage system, thereby causing resource waste and increasing the burden on the sewage system.
Disclosure of Invention
The utility model aims to solve the problems, thereby providing a comprehensive utilization system of mother liquor water in the production of calcium carbide polyvinyl chloride by reusing the mother liquor water.
The utility model solves the problems, and adopts the following technical scheme:
the utility model provides a mother liquor water comprehensive utilization system in carbide method polyvinyl chloride production, including the dry mother liquor collecting tank that is located the drying process, the delivery port of dry mother liquor collecting tank is connected with first water pump, be connected with first filter on the delivery port of first water pump, be connected with first outlet pipe on the delivery port of first filter respectively, the second outlet pipe, third outlet pipe and fourth outlet pipe, be connected with the washing subsystem that is located the polymerization process on the first outlet pipe, be connected with the mother liquor filtration subsystem on the second outlet pipe, be connected with the pulse water pipe on the output of mother liquor filtration subsystem, the third outlet pipe extends to in the sedimentation tank in the acetylene process, the fourth outlet pipe extends to stripper department.
Compared with the prior art, the utility model adopting the technical scheme has the outstanding characteristics that:
the mother liquor produced after the drying process is filtered and then divided into four parts, the mother liquor in the first water outlet pipe is led to the polymerization process through a flushing subsystem and is used for flushing a filter connected with a slurry tank and a slurry tank, the mother liquor of the second water outlet pipe is converted through a mother liquor filtering and recycling subsystem and then is used as machine sealing water, the final flow to a generator liquid level meter in the acetylene process is used as pulse water, slag slurry is prevented from blocking the liquid level meter, the mother liquor of the third water outlet pipe is conveyed to a sedimentation tank and is subjected to water supplementing for the generator after sedimentation, the fourth water outlet pipe is used as conventional stripping tower flushing water, the mother liquor water is filtered for multiple times and is reused for multiple times through the structure of the system, the use of purified water is reduced, the cost is reduced, the direct discharge of sewage is not needed, the multistage utilization is realized, and the pollution discharge burden is lightened.
Preferably, the utility model further adopts the technical scheme that:
the flushing subsystem comprises a fourth filter, a polymerization mother liquor collecting tank, a fifth water pump and a third filter which are sequentially connected with the first water outlet pipe, and a flushing pipe is connected to a water outlet of the third filter.
The mother liquor filtering and recycling subsystem comprises a heat exchanger, a mechanical seal water tank, a second water pump, a second filter, a mechanical seal cavity of a slurry pump in a polymerization process, a mechanical seal water collecting tank, a third water pump, a centrifugal mother liquor collecting tank in an acetylene process and a fourth water pump which are sequentially connected with a second water outlet pipe through pipelines, and a water outlet of the fourth water pump is connected with a pulse water pipe.
The first filter is a self-cleaning filter.
The second filter and the third filter are cartridge filters.
The heat exchanger comprises a plurality of spiral plate heat exchangers which are connected in sequence.
A first return pipe is arranged between the water outlet of the first filter and the dried mother liquor collecting tank, between the water outlet of the second water pump and the machine sealing water tank, between the water outlet of the third water pump and the machine sealing water collecting tank, and between the water outlet of the fourth water pump and the acetylene procedure centrifugal mother liquor collecting tank, the first return pipe is provided with a liquid level control valve, and a liquid level transmitter in control connection with the liquid level control valve is arranged in the drying mother liquor collecting tank, the machine sealing water collecting tank and the acetylene procedure centrifugal mother liquor collecting tank.
The pipeline that the second filter links to each other with the quick-witted seal chamber of polymerization process slurry pump divide to be equipped with the second back flow with quick-witted seal water tank intercommunication, be provided with first pressure control valve on the second back flow, on the pipeline that the quick-witted seal chamber of second filter and polymerization process slurry pump links to each other and lie in between quick-witted seal chamber of second back flow and polymerization process slurry pump be provided with first pressure transmitter, first pressure transmitter is connected with first pressure control valve control.
The flushing pipe is provided with a third return pipe communicated with the polymerization mother liquor collecting tank, the third return pipe is provided with a second pressure control valve, one side, far away from the third filter, of the flushing pipe is provided with a second pressure transmitter, and the second pressure transmitter is in control connection with the second pressure control valve.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
marked in the figure as: the device comprises a drying mother liquor collecting tank 1, a first water pump 2, a first filter 3, a first water outlet pipe 301, a second water outlet pipe 302, a third water outlet pipe 303, a fourth water outlet pipe 304, a heat exchanger 4, a machine seal water tank 5, a second water pump 6, a second filter 7, a machine seal cavity 8 of a slurry pump in a polymerization process, a machine seal water collecting tank 9, a third water pump 10, an acetylene process centrifugal mother liquor collecting tank 11, a fourth water pump 12, a stripping tower 13, a sedimentation tank 14, a fourth filter 15, a polymerization mother liquor collecting tank 16, a fifth water pump 17, a third filter 18, a flushing pipe 19, a first return pipe 20, a liquid level control valve 21, a liquid level transmitter 22, a second return pipe 23, a first pressure control valve 24, a first pressure transmitter 25, a third return pipe 26, a second pressure control valve 27 and a second pressure transmitter 28.
Detailed Description
The utility model is further described below in connection with the following examples which are provided for the purpose of better understanding of the present utility model and are, therefore, not to be construed as limiting the scope of the utility model.
The utility model provides a mother liquor water comprehensive utilization system in carbide method polyvinyl chloride production, including being located dry mother liquor collecting tank 1 in the drying process, dry mother liquor collecting tank 1 is vertical cylindric, specification 2300 x 2400 x 10mm, the volume 10m, operating temperature 80-100 ℃, operating pressure is ordinary pressure, dry mother liquor collecting tank 1's delivery port is connected with first water pump 2, first water pump 2 is the centrifugal pump, an on-one, actual flow 80-100 m/h, the lift 60-80m, rated power 32-40kW, rated current 65-70A, be connected with first filter 3 on the delivery port of first water pump 2, be connected with first outlet pipe 301 on the delivery port of first filter 3 respectively, second outlet pipe 302, third outlet pipe 303 and fourth outlet pipe 304, be connected with the washing subsystem that is located in the polymerization process on the first outlet pipe 301, be connected with mother liquor filtration recycle subsystem on the second outlet pipe 302, be connected with the pulse water pipe on the output of mother liquor filtration recycle subsystem, third outlet pipe 301 extends to the sedimentation tank 14 in the process and carries out the water to fourth and is the tower tray 13 and carries out the water stripping to the tower.
The flushing subsystem comprises a fourth filter 15, a polymerization mother liquor collecting tank 16, a fifth water pump 17 and a third filter 18 which are sequentially connected with a first water outlet pipe 301, a flushing pipe 19 is connected to a water outlet of the third filter 18, the fourth filter 15 is a net-type filter, the fifth water pump 17 is a centrifugal pump, the actual flow is 280-320 m/h, the lift is 150-170m, the rated power is 200-240kW, the rated current is 380-390A, the fourth filter 15 filters mother liquor at first, then enters the polymerization mother liquor collecting tank 16, the mother liquor is pressurized by the fifth water pump 17 and filtered again, then the mother liquor is used for flushing the filters connected with the discharge of the polymerization kettle, the slurry tank and the slurry tank, the use of purified water is saved in the polymerization process, and the mother liquor after filtration is flushed, so that the comprehensive utilization of the mother liquor is realized.
The mother liquor filtering and recycling subsystem comprises a heat exchanger 4, a mechanical seal water tank 5, a second water pump 6, a second filter 7, a mechanical seal cavity 8 of a slurry pump in a polymerization process, a mechanical seal water collecting tank 9, a third water pump 10, a centrifugal mother liquor collecting tank 11 in an acetylene process and a fourth water pump 12 which are sequentially connected with a second water outlet pipe 302 through pipelines, wherein the mechanical seal water tank 5 is in a vertical cylinder shape, the specification is 2300 multiplied by 2400 multiplied by 10mm, the volume is 10m, the working pressure is normal pressure, the mechanical seal water collecting tank 9 is in a vertical cylinder shape, the specification is 1400 multiplied by 2900 multiplied by 14mm, the volume is 3.87m, the working temperature is 50-80 MPa, the design pressure is 0.8Mpa, the centrifugal mother liquor collecting tank 11 in the acetylene process is in a vertical cylinder shape, the specification is 3080 multiplied by 3150 multiplied by 12mm, the volume is 14.9m, the working temperature is 30-50 ℃, the working pressure is normal pressure, the second water pump 6 is a centrifugal pump, one pump is provided, the actual flow rate is 110-130 m/h, the actual flow rate is 160-180-58 kW, the rated current is 60-60 m, and the rated current is 60-60 m and the actual flow rate is 60-60 m; the fourth water pump 12 is a centrifugal pump, is provided with an actual flow of 50-70 m/h and a lift of 50-70m, mother liquor of the second water outlet pipe 302 enters the mechanical seal water tank 5 after being cooled by the heat exchanger 4 and flows through the second filter 7 after being pumped by the second water pump 6, and then is conveyed to the mechanical seal cavity 8 of the slurry pump in the polymerization process to serve as mechanical seal water, so that the mother liquor can be reused, the mechanical seal water enters the mechanical seal water collecting tank 9 after being discharged and flows to the centrifugal mother liquor collecting tank 11 in the acetylene process after being pumped by the third water pump 10, and the mother liquor is taken as pulse water of a generator liquid level meter in the acetylene process after being pumped by the fourth water pump 12, and the slag slurry is prevented from blocking the liquid level meter.
The first filter 3 is a self-cleaning filter, the filtering precision of the cleaning filter is 20-25 mu m, the design pressure is 1.5-1.6Mpa, and the design temperature is 60-80 ℃; the self-cleaning filter belongs to a mature technology, and is a precise device which utilizes a filter screen to directly intercept impurities in water, remove suspended matters and particles in water, reduce turbidity, purify water quality, reduce system dirt, bacteria and algae, rust and the like, so as to purify water quality and protect other devices of the system from working normally.
The second filter 7 and the third filter 18 are filter element type filters, the filter element type filters are used once and are prepared, the specification is 529 multiplied by 2450mm, the water outlet speed is designed to be 130-200 m/h, the specification of the used wire rod winding filter element is 65 multiplied by 762mm, and the filtering precision is 20 mu m.
The heat exchanger 4 comprises a plurality of sequentially connected spiral plate heat exchangers 4, in the embodiment, two sequentially connected spiral plate heat exchangers 4 are adopted, the specification of each spiral plate heat exchanger 4 is phi 770 multiplied by 1220 multiplied by 8mm, the heat exchange area S=20 square meters, circulating water is used as a cooling medium, the temperature of the circulating water is 15-35 ℃, and the heat exchange is carried out on mother liquor water through the two-stage spiral plate heat exchangers 4, so that the temperature is reduced from 70 ℃ to 30-45 ℃.
The first return pipes 20 are respectively arranged between the water outlet of the first filter 3 and the drying mother liquor collecting tank 1, between the water outlet of the second water pump 6 and the mechanical seal water tank 5, between the water outlet of the third water pump 10 and the mechanical seal water collecting tank 9, and between the water outlet of the fourth water pump 12 and the acetylene process centrifugal mother liquor collecting tank 11, the first return pipes 20 are respectively provided with a liquid level control valve 21, and the drying mother liquor collecting tank 1, the mechanical seal water tank 5, the mechanical seal water collecting tank 9 and the acetylene process centrifugal mother liquor collecting tank 11 are respectively internally provided with a liquid level transmitter 22 in control connection with the liquid level control valves 21, liquid level signals are transmitted to the liquid level control valves 21 by the liquid level transmitters 22, and the liquid level in the tanks is controlled by the liquid level control valves 21, so that overflow or the phenomenon that the water pump cannot feed liquid and vibrate greatly due to the too high liquid level is prevented.
The pipeline that second filter 7 links to each other with the quick-witted seal chamber 8 of polymerization process slurry pump divides and is equipped with the second back flow 23 with quick-witted seal water pitcher 5 intercommunication, be provided with first pressure control valve 24 on the second back flow 23, on the pipeline that second filter 7 links to each other with the quick-witted seal chamber 8 of polymerization process slurry pump and lie in between second back flow 23 and the quick-witted seal chamber 8 of polymerization process slurry pump, first pressure transmitter 25 is connected with first pressure control valve 24 control, quick-witted seal water needs to keep pressure stability, measure rivers pressure through first pressure transmitter 25, adjust through first pressure control valve 24 when pressure is unstable, guarantee the pressure stability of quick-witted seal water.
The flushing pipe 19 is provided with a third return pipe 26 communicated with the polymerization mother liquor collecting tank 16, the third return pipe 26 is provided with a second pressure control valve 27, the flushing pipe 19 is provided with a second pressure transmitter 28 at one side of the third return pipe 26 far away from the third filter 18, the second pressure transmitter 28 is in control connection with the second pressure control valve 27, and the flushing pipe 19 is provided with the third return pipe 26, so that the water pressure for cleaning is kept stable.
The mother liquor produced after the drying process is filtered and then divided into four parts, the mother liquor in the first water outlet pipe is led to the polymerization process through a flushing subsystem and is used for flushing a filter connected with a slurry tank and a slurry tank, the mother liquor of the second water outlet pipe is converted through a mother liquor filtering and recycling subsystem and then is used as machine sealing water, the final flow to a generator liquid level meter in the acetylene process is used as pulse water, slag slurry is prevented from blocking the liquid level meter, the mother liquor of the third water outlet pipe is conveyed to a sedimentation tank and is subjected to water supplementing for the generator after sedimentation, the fourth water outlet pipe is used as conventional stripping tower flushing water, the mother liquor water is filtered for multiple times and is reused for multiple times through the structure of the system, the use of purified water is reduced, the cost is reduced, the direct discharge of sewage is not needed, the multistage utilization is realized, and the pollution discharge burden is lightened.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present utility model as defined by the appended claims.
Claims (9)
1. The utility model provides a mother liquor water comprehensive utilization system in carbide method polyvinyl chloride production, is including the dry mother liquor collecting tank that is located the drying process, and the delivery port of dry mother liquor collecting tank is connected with first water pump, is connected with first filter on the delivery port of first water pump, its characterized in that: the water outlet of the first filter is respectively connected with a first water outlet pipe, a second water outlet pipe, a third water outlet pipe and a fourth water outlet pipe, the first water outlet pipe is connected with a flushing subsystem positioned in the polymerization process, the second water outlet pipe is connected with a mother liquor filtering and recycling subsystem, the output end of the mother liquor filtering and recycling subsystem is connected with a pulse water pipe, the third water outlet pipe extends into a sedimentation tank in the acetylene process, and the fourth water outlet pipe extends to a stripping tower.
2. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 1, which is characterized in that: the flushing subsystem comprises a fourth filter, a polymerization mother liquor collecting tank, a fifth water pump and a third filter which are sequentially connected with the first water outlet pipe, and a flushing pipe is connected to a water outlet of the third filter.
3. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 2, which is characterized in that: the mother liquor filtering and recycling subsystem comprises a heat exchanger, a mechanical seal water tank, a second water pump, a second filter, a mechanical seal cavity of a slurry pump in a polymerization process, a mechanical seal water collecting tank, a third water pump, a centrifugal mother liquor collecting tank in an acetylene process and a fourth water pump which are sequentially connected with a second water outlet pipe through pipelines, and a water outlet of the fourth water pump is connected with a pulse water pipe.
4. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 1, which is characterized in that: the first filter is a self-cleaning filter.
5. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 3, wherein the system comprises the following components: the second filter and the third filter are cartridge filters.
6. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 3, wherein the system comprises the following components: the heat exchanger comprises a plurality of spiral plate heat exchangers which are connected in sequence.
7. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 3, wherein the system comprises the following components: a first return pipe is arranged between the water outlet of the first filter and the dried mother liquor collecting tank, between the water outlet of the second water pump and the machine sealing water tank, between the water outlet of the third water pump and the machine sealing water collecting tank, and between the water outlet of the fourth water pump and the acetylene procedure centrifugal mother liquor collecting tank, the first return pipe is provided with a liquid level control valve, and a liquid level transmitter in control connection with the liquid level control valve is arranged in the drying mother liquor collecting tank, the machine sealing water collecting tank and the acetylene procedure centrifugal mother liquor collecting tank.
8. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 3, wherein the system comprises the following components: the pipeline that the second filter links to each other with the quick-witted seal chamber of polymerization process slurry pump divide to be equipped with the second back flow with quick-witted seal water tank intercommunication, be provided with first pressure control valve on the second back flow, on the pipeline that the quick-witted seal chamber of second filter and polymerization process slurry pump links to each other and lie in between quick-witted seal chamber of second back flow and polymerization process slurry pump be provided with first pressure transmitter, first pressure transmitter is connected with first pressure control valve control.
9. The system for comprehensively utilizing mother liquor water in the production of polyvinyl chloride by a calcium carbide method according to claim 2, which is characterized in that: the flushing pipe is provided with a third return pipe communicated with the polymerization mother liquor collecting tank, the third return pipe is provided with a second pressure control valve, one side, far away from the third filter, of the flushing pipe is provided with a second pressure transmitter, and the second pressure transmitter is in control connection with the second pressure control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321318616.4U CN219771808U (en) | 2023-05-29 | 2023-05-29 | Mother liquor water comprehensive utilization system in calcium carbide process polyvinyl chloride production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321318616.4U CN219771808U (en) | 2023-05-29 | 2023-05-29 | Mother liquor water comprehensive utilization system in calcium carbide process polyvinyl chloride production |
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| Publication Number | Publication Date |
|---|---|
| CN219771808U true CN219771808U (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321318616.4U Active CN219771808U (en) | 2023-05-29 | 2023-05-29 | Mother liquor water comprehensive utilization system in calcium carbide process polyvinyl chloride production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219771808U (en) |
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2023
- 2023-05-29 CN CN202321318616.4U patent/CN219771808U/en active Active
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