CN204709847U - A kind of negative pressure stripper plant reducing copolymer resins VCM content - Google Patents
A kind of negative pressure stripper plant reducing copolymer resins VCM content Download PDFInfo
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- CN204709847U CN204709847U CN201520292465.9U CN201520292465U CN204709847U CN 204709847 U CN204709847 U CN 204709847U CN 201520292465 U CN201520292465 U CN 201520292465U CN 204709847 U CN204709847 U CN 204709847U
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Abstract
A kind of negative pressure stripper plant reducing copolymer resins VCM content, it comprises shower water feed system, steam supply system, stripper and vavuum pump, it is characterized in that: the fan-shaped solid of described shower water feed system is distributed in the right side of stripper, magnitude setting is consistent with stripper column plate quantity, described steam supply system comprises main steam supply and auxiliary steam supply, be located at bottom and the left side 1/2 of stripper respectively---2/3 position, place, described vavuum pump is connected with stripper top by pipeline.The utility model principle is simple, handled easily, can realize removing of VCM in copolymer resins slurry, avoid slurry in stripping, cohere column plate, blocking sieve aperture, ensure the normal operation of stripper.
Description
Technical field
What the utility model related to a kind of polyvinyl chloride resin residual slurry VCM removes device, is particularly applied to removing of chloroethylene copolymer resin residual slurry VCM.
Background technology
Suspension method is adopted to produce copolymer resins, stripper is entered through primary steam heat exchange when reaction terminates copolymer pulp, now the residual rate of VCM is about 3%, overflow and contaminated environment for avoiding the VCM diffusion in drying, packaging and process remained, reduce VCM to consume simultaneously, the same with homopolymerization PVC slurry, chloroethylene copolymer resin has to pass through stripping before it is dried and removes VCM.
Copolymer resins is due to second or the introducing of Third monomer, and more common homopolymerization PVC character exists certain difference.For vinyl chloride-vinyl acetate copolymer resins, the vitrification point of this resin is 70 DEG C, the vitrification point of homopolymerization PVC is 85 DEG C, at ambient pressure, remove residual monomer with stripper to need at about 100 DEG C, but now copolymer resins slurry stickiness increases, and easily coheres on the tower tray of stripper, block sieve aperture, after adopting negative pressure stripping, situation alleviates to some extent.
Tradition negative pressure stripper plant steam is connected to bottom stripper, and shower water is connected to stripper top, and set-up mode is more concentrated.Device runs under condition of negative pressure, utilizes steam to heat slurry, makes it seethe with excitement and realizes removing of VCM.The Main Function of shower water rinses out the toner carried secretly in ascending air, also plays a part to regulate slurry concentration simultaneously, avoids slurry ramming material in tower, or adhere to tower wall, at high temperature form red material and black yellow point.Adopt traditional negative pressure stripper plant to copolymer resin slurry carry out VCM remove time, because copolymer resins slurry stickiness is larger, stripper steam and shower water arrange and cannot meet removing of VCM completely, finished product residual exceeds standard, and normal appearance black, Huang Dian, red material, produce substandard products time serious, even affect the normal operation of stripper.
Summary of the invention
The utility model removes in residual VCM in order to overcome existing negative pressure stripper plant at copolymer resins slurry, because steam and shower water arrange the problem concentrated and affect product quality, the negative pressure stripper plant of the reduction copolymer resins VCM content providing a kind of applicable copolymer resin to produce.
The utility model solves the technical scheme that its technical problem adopts: a kind of negative pressure stripper plant reducing copolymer resins VCM content, it comprises shower water feed system, steam supply system, stripper and vavuum pump, it is characterized in that: the fan-shaped solid of described shower water feed system is distributed in the right side of stripper, magnitude setting is consistent with stripper column plate quantity, described steam supply system comprises main steam supply and auxiliary steam supply, be located at bottom and the position, place, left side 1/2-2/3 of stripper respectively, described vavuum pump is connected with stripper top by pipeline.The fan-shaped solid distribution of shower water feed system is beneficial to the uniformity of shower water distribution, and the increasing of magnitude setting is beneficial to the problem solving copolymer pulp viscosity and increase.The stripper temperature that the fan-shaped solid distribution of auxiliary steam supply solution shower water brings reduces the level of residual monomers caused and exceeds standard.
Above-mentioned shower water feed system adopts full-automatic rotating water smoke heat water-spraying, and hot water temperature is 80-85 DEG C, and full-automatic rotating water mist sprinkling is beneficial to operation, and without dead angle, spray evenly, hot water is beneficial to keeping system temperature, prevents tower temperature drop low, affects removal effect.
In above-mentioned steam supply system, auxiliary steam quantity delivered is less than main steam quantity delivered, is beneficial to steam rising toward tower top at the bottom of tower.
Aperture, above-mentioned stripper hole is 7 ~ 9mm, and distance between plates is 220 ~ 320mm, is beneficial to and reduces tower pressure, prevent flooding.
The utility model principle is simple, handled easily, can realize removing of VCM in copolymer resins slurry, avoid slurry in stripping, cohere column plate, blocking sieve aperture, ensure the normal operation of stripper, can realize reducing the probability of black, Huang Dian, the red material in finished product simultaneously, improve the quality of products.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment of the present utility model.
In Fig. 1,1 is feed pipe, and 2 is auxiliary steam supply pipe, and 3 is main steam supply pipe, and 4 is stripper, and 5 is outlet valve, and 6 for going out tower mashing pump, and 7 is vacuum tube, and 8 is stop valve, and 9 is vavuum pump, and 10 is recovery system, and 11 is spray pump, and 12 is slurry tank.
Specific embodiments is as follows:
With reference to accompanying drawing 1, stripper top is entered through feed pipe after copolymer pulp heat exchange, slurry is from top to bottom worked in coordination with by main steam supply and auxiliary steam supply and is provided steam on the sieve plate of tower, material and steam are repeatedly reverse to be contacted, reach the effect of heat transfer, mass transfer, to make in resin-in-pulp residual VCM effusion, the VCM removed with gas phase by vacuum tube by vacuum pumping to recovery system process.Spray pump is according to copolymer resins slurry viscosity situation simultaneously, enough heat water-sprayings are supplied to each layer column plate, object is to regulate slurry concentration, ensure that slurry passes through smoothly, also system temperature is compensated, prevent tower temperature too low, the toner carried secretly in ascending air can also be rinsed out, effectively ensure that copolymer pulp runs normally in stripper.
Feature of the present utility model is fan-shaped solid distribution shower water feed system and auxiliary steam supply, solve the viscosity of copolymer pulp when stripping large, the stripper overload caused, the problems such as finished product black Huang point is many, this device power consumption is little, and mass-transfer efficiency is high, and VCM removal efficiency is high, remain removing of VCM in effective guarantee copolymer resin slurry, improve product quality.Principle of device is simple, with low cost, stable, and Be very effective is practical.
Claims (4)
1. one kind is reduced the negative pressure stripper plant of copolymer resins VCM content, it comprises shower water feed system, steam supply system, stripper and vavuum pump, it is characterized in that: the fan-shaped solid of described shower water feed system is distributed in the right side of stripper, magnitude setting is consistent with stripper column plate quantity, described steam supply system comprises main steam supply and auxiliary steam supply, be located at bottom and the position, place, left side 1/2-2/3 of stripper respectively, described vavuum pump is connected with stripper top by pipeline.
2. a kind of negative pressure stripper plant reducing copolymer resins VCM content according to claim 1, is characterized in that: shower water feed system is full-automatic rotating water smoke heat water-spraying, and hot water temperature is 80-85 DEG C.
3. a kind of negative pressure stripper plant reducing copolymer resins VCM content according to claim 1, is characterized in that: in steam supply system, auxiliary steam quantity delivered is less than main steam quantity delivered.
4. a kind of negative pressure stripper plant reducing VCM content according to claim 1, it is characterized in that: aperture, stripper hole is 7 ~ 9mm, distance between plates is 220 ~ 320mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292465.9U CN204709847U (en) | 2015-05-08 | 2015-05-08 | A kind of negative pressure stripper plant reducing copolymer resins VCM content |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520292465.9U CN204709847U (en) | 2015-05-08 | 2015-05-08 | A kind of negative pressure stripper plant reducing copolymer resins VCM content |
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| CN204709847U true CN204709847U (en) | 2015-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114917609A (en) * | 2022-06-17 | 2022-08-19 | 唐山三友氯碱有限责任公司 | Stripping system for removing low-content chloroethylene in PPVC (poly (vinyl chloride) latex |
-
2015
- 2015-05-08 CN CN201520292465.9U patent/CN204709847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114917609A (en) * | 2022-06-17 | 2022-08-19 | 唐山三友氯碱有限责任公司 | Stripping system for removing low-content chloroethylene in PPVC (poly (vinyl chloride) latex |
| CN114917609B (en) * | 2022-06-17 | 2024-03-08 | 唐山三友氯碱有限责任公司 | Stripping system for removing low-content vinyl chloride in PPVC latex |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190415 Address after: No. 36 North Sandong Road, Shihezi Economic and Technological Development Zone, Xinjiang Uygur Autonomous Region, 832000 Patentee after: Xinjiang Tianye (Group) Co., Ltd. Address before: 832000 Xinjiang Uygur Autonomous Region Provincial Administrative Unit Shihezi City West Third Road North End Xinjiang Shihezizhong Chemical Co., Ltd. Patentee before: Shihezi Zhongfa Chemical Co., Ltd., Xinjiang |