CN203668267U - Device for recovering styrene in styrene butadiene rubber - Google Patents
Device for recovering styrene in styrene butadiene rubber Download PDFInfo
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- CN203668267U CN203668267U CN201420015906.6U CN201420015906U CN203668267U CN 203668267 U CN203668267 U CN 203668267U CN 201420015906 U CN201420015906 U CN 201420015906U CN 203668267 U CN203668267 U CN 203668267U
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Abstract
The utility model belongs to the field of chemical engineering devices, and particularly relates to a device for recovering styrene in styrene butadiene rubber. The device comprises a styrene stripping tower, wherein the top of a body of the styrene stripping tower is communicated with a tower top separator, the bottom is communicated with a latex storage tank, a No.3 tray at the upper part is communicated with a buffer tank, a No.5 tray is communicated with a latex feeding pump, the lower part is communicated with a vapor source, the top of the tower top separator is communicated with a stripping tower condenser which is communicated with a decanter and an ammonia condenser respectively, the ammonia condenser is communicated with a condensate separator, the top of the condensate separator is communicated with a recovery unit compressor, the bottom of the condensate separator is communicated with the decanter, a styrene discharge pipe is arranged at the bottom of the decanter, the bottom of the decanter is communicated with the buffer tank, and the bottom of the buffer tank is communicated with a wastewater stripping tower feeding pump which is communicated with a wastewater refining device and a No.1 tray of the tower body respectively. With the adoption of the device, the stability of tower body operation can be improved, the content of residual styrene in latex at the bottom of the tower is reduced, the content of styrene in discharged wastewater is reduced, the styrene consumption is reduced, the environment is protected, and the product quality is improved.
Description
Technical field
The utility model relates to a kind of styrene-butadiene rubber(SBR) styrene recovery device, belongs to chemical plant installations field.
Background technology
Styrene-butadiene rubber(SBR) is taking divinyl, vinylbenzene as main raw material, di-isopropylbenzene hydroperoxide is initiator, rongalite and iron edta sodium salt are activator, nilox resin acid potassium and sodium soap mixing soap lye are emulsifying agent, water is dispersion medium, produces styrene-butadiene latex with copolymerization process.Then produce block styrene-butadiene rubber(SBR) through MONOMER RECOVERY, latex blending, salt-free cohesion and aftertreatment.The final transformation efficiency of polyreaction is 70 ± 2%, and the latex after polyreaction is pumped into vinylbenzene stripping tower after removing divinyl.Latex is first tower tray upper feeding from top, bottom is blown into steam, monomer styrene stripping in latex is gone out, tower top contain cinnamic steam cooling after, phlegma is water, separating of oil in vinylbenzene decantor, oil phase vinylbenzene goes polymerization to recycle, and water send sewage disposal as factory effluent.The waste water (divinyl compressor seal water and vinylbenzene stripping tower overhead condensation water) of former styrene-butadiene rubber(SBR) technique MONOMER RECOVERY workshop section, after decantor removes vinylbenzene, directly send sewage farm.Sewage quantity is large, and wherein the about 200ppm of styrene content, has not only wasted resource, and vinylbenzene also affects environment as repugnant substance.
Vinylbenzene stripping tower has 12 sieve aperture tower trays, on have 2 to press foam plates, the latex that removes divinyl is first tower tray upper feeding from top, bottom is blown into steam, monomer styrene stripping in latex is gone out, owing to containing soap in latex, on column plate, liquid very easily foams, especially in the situation that have fluctuation when producing, quantity of steam increases, in top gaseous phase, latex is carried secretly seriously, and tower operational stability is poor, cause tower primer Ruzhong residual styrene content to exceed standard, cause wastage of material, environmental pollution, even in product, volatile matter exceeds standard, and affects quality product.
Utility model content
The technical problems to be solved in the utility model is: provides one to be conducive to the residual benzene content in control tower primer Ruzhong, reduces and discharge cinnamic content in waste water, and styrene-butadiene rubber(SBR) styrene recovery device that can protection of the environment.
Styrene-butadiene rubber(SBR) styrene recovery device described in the utility model, comprise vinylbenzene stripping tower, vinylbenzene stripping tower comprises tower body, tower body top is communicated with overhead separator, bottom is communicated with latex storage tank, No. 3 or No. 4 tower trays connection surge tanks on tower body top, No. 5 or No. 6 tower trays connection latex fresh feed pumps, tower body bottom is communicated with vapour source, overhead separator top is communicated with stripping tower condenser, stripping tower condenser is communicated with respectively decantor and ammonia condenser, ammonia condenser is communicated with lime set separator, lime set separator top is communicated with recovery unit compressor, bottom is communicated with decantor, decantor bottom arranges vinylbenzene discharge nozzle, and connection surge tank, surge tank bottom is communicated with water vaporization tower fresh feed pump, water vaporization tower fresh feed pump is communicated with respectively waste water refining plant and No. 1 tower tray of tower body.
The waste water that vinylbenzene stripping tower tower top adds plays the effect of latex in froth breaking and scrubber overhead gas phase, has reduced the amount of carrying secretly of latex in top gaseous phase, has improved the stability of tower operation; When production operation has fluctuation, especially when in the increase of production load or latex, styrene content is higher, can add wastewater flow rate and lateral line withdrawal function amount by adjustment, make vinylbenzene stripping tower approach the operation of rectifying tower, by adjusting bottom steam amount, reduce the residual cinnamic content in tower primer Ruzhong, it is controlled in set quota, reduce vinylbenzene consumption, protected environment, improved quality product; The Calculation of Solubility of cinnamic solubleness in water by 20 DEG C, recovery waste water concentration of styrene from decantor is 200ppm, after three layers of rectifying tower tray of tower top, in the waste water of lateral line withdrawal function, styrene content is 150ppm, the vinylbenzene that is discharged into sewage farm has reduced 5200kg/, not only reduce vinylbenzene consumption, reduced the expense of sewage disposal, also protected environment; Pipeline communication is all passed through in connection between each parts.
Described tower body top sets gradually 4 sieve aperture tower trays from top to bottom, waste water refining plant comprises waste water treating tower, waste water treating tower bottom arranges vapour pipe, top connects stripping tower condenser by prolong, bottom connects Purified Water basin by water pipe, Purified Water tank bottom connects refining water pump, and Purified Water pump outlet arranges several discharge nozzles.Vinylbenzene stripping tower tower top replaces existing 2 to press foam plate with 4 sieve aperture tower trays, has solved liquid in tower body top foaming problem, and sewage enters into waste water treating tower; Can in waste water treating tower, pass into low-pressure steam by vapour pipe, make waste water carry out stripping and remove vinylbenzene, cinnamic content in waste water is reduced to below 10ppm; The temperature of above-mentioned low-pressure steam is 170 DEG C, and pressure is 0.3MpaG; Tower top enters in stripping tower condenser by prolong containing cinnamic gaseous phase materials; Waste water after stripping; its oxygen level approaches de-oxygenised water, can substitute the use of de-oxygenised water, but because wherein contain micro-stopper; should not enter paradigmatic system; wherein contain micro-benzene ethene, so can be used for the preparation of MONOMER RECOVERY cycle chemistry product after polymerization, saved the consumption of preparation de-oxygenised water; reduce quantity of wastewater effluent; vinylbenzene in waste water has obtained recycling simultaneously, has reduced supplies consumption, has protected environment.
The beneficial effects of the utility model are:
(1) amount of carrying secretly of latex in minimizing top gaseous phase, improves the stability of tower body operation; Reduce the residual cinnamic content in tower primer Ruzhong, it is controlled in set quota;
(2) reduce vinylbenzene consumption, protected environment, improved quality product;
(3) be 200ppm from the recovery waste water concentration of styrene of decantor; after three layers of rectifying tower tray of tower top; lateral line withdrawal function again after waste water treating tower in waste water styrene content drop to below 10ppm; the vinylbenzene that is discharged into sewage farm has reduced 19.76 tons/year; not only reduce vinylbenzene consumption; reduce the expense of sewage disposal, also protected environment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of waste water refining plant in Fig. 1.
In figure: 1, divinyl flash tank 2, surge tank 3, vinylbenzene stripping tower 4, latex fresh feed pump 5, water vaporization tower fresh feed pump 6, waste water refining plant 7, latex storage tank 8, vapour source 9, vinylbenzene discharge nozzle 10, decantor 11, lime set separator 12, ammonia condenser 13, stripping tower condenser 14, overhead separator 15, prolong 16, waste water treating tower 17, vapour pipe 18, Purified Water basin 19, discharge nozzle 20, refining water pump.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Fig. 1～Fig. 2, styrene-butadiene rubber(SBR) styrene recovery device described in the utility model, comprise vinylbenzene stripping tower 3, vinylbenzene stripping tower 3 comprises tower body, tower body top is communicated with overhead separator 14, bottom is communicated with latex storage tank 7, No. 3 tower trays on tower body top are communicated with surge tank 2, No. 5 tower tray is communicated with latex fresh feed pump 4, tower body bottom is communicated with vapour source 8, overhead separator 14 tops are communicated with stripping tower condenser 13, stripping tower condenser 13 is communicated with respectively decantor 10 and ammonia condenser 12, ammonia condenser 12 is communicated with lime set separator 11, lime set separator 11 tops are communicated with recovery unit compressor, bottom is communicated with decantor 10, decantor 10 bottoms arrange vinylbenzene discharge nozzle 9, and connection surge tank 2, surge tank 2 bottoms are communicated with water vaporization tower fresh feed pump 5, water vaporization tower fresh feed pump 5 is communicated with respectively waste water refining plant 6 and No. 1 tower tray of tower body.Tower body top sets gradually 4 sieve aperture tower trays from top to bottom, waste water refining plant 6 comprises waste water treating tower 16, waste water treating tower 16 bottoms arrange vapour pipe 17, top connects stripping tower condenser 13 by prolong 15, bottom is communicated with Purified Water basin 18, Purified Water basin 18 bottoms connect refining water pump 20, and the outlet of refining water pump 20 arranges several discharge nozzles 19.
In diagram, the direction of arrow is the flow direction of each gas and liquid.
When work, enter surge tank 2 from the water of divinyl flash tank 1, decantor 10 and the water of vinylbenzene stripping tower 3 lateral line withdrawal functions; Deliver to waste water refining plant 6 by water vaporization tower fresh feed pump 5 parts, another part is delivered to No. 1 tower tray of vinylbenzene stripping tower 3, then from No. 3 tower tray lateral line withdrawal functions; The latex of being sent here by latex fresh feed pump 4 enters No. 5 tower trays of vinylbenzene stripping tower 3, and steam adds from the vapour source 8 of tower body bottom, the latex after degassed from tower body bottom with pumping toward latex storage tank 7; The vinylbenzene that the 3 tower top rectifying of vinylbenzene stripping tower go out and the gas mixture of water are after overhead separator 14 is isolated the latex of carrying secretly, go stripping tower condenser 13 use cooling water condensation, condensed liquid phase is delivered to decantor 10, the further deammoniation condenser 12 liquefied ammonia condensation of gas phase, then enter in lime set separator 11, wherein non-condensable gas enters recovery unit suction port of compressor, and lime set recycles after decantor 10 removes free-water.
Waste water enters in the waste water treating tower 16 of waste water refining plant 6, waste water treating tower 16 is stripping tower, water vaporization tower fresh feed pump 5 is sent to surge tank 2 sewage out in waste water treating tower 16, in waste water treating tower 16, pass into low-pressure steam by vapour pipe 17 simultaneously, make waste water carry out stripping and remove vinylbenzene, can make cinnamic content in waste water be reduced to below 10ppm, tower top is incorporated in stripping tower condenser 13 by prolong 15 containing cinnamic gaseous phase materials; Remove cinnamic waste water and recycle respectively by many discharge nozzles 19, unnecessary waste water enters sewage disposal device and processes.
Claims (2)
1. a styrene-butadiene rubber(SBR) styrene recovery device, it is characterized in that: comprise vinylbenzene stripping tower (3), vinylbenzene stripping tower (3) comprises tower body, tower body top is communicated with overhead separator (14), bottom is communicated with latex storage tank (7), No. 3 or No. 4 tower trays connection surge tanks (2) on tower body top, No. 5 or No. 6 tower trays connection latex fresh feed pumps (4), tower body bottom is communicated with vapour source (8), overhead separator (14) top is communicated with stripping tower condenser (13), stripping tower condenser (13) is communicated with respectively decantor (10) and ammonia condenser (12), ammonia condenser (12) is communicated with lime set separator (11), lime set separator (11) top is communicated with recovery unit compressor, bottom is communicated with decantor (10), decantor (10) bottom arranges vinylbenzene discharge nozzle (9), and connection surge tank (2), surge tank (2) bottom is communicated with water vaporization tower fresh feed pump (5), water vaporization tower fresh feed pump (5) is communicated with respectively No. 1 tower tray of waste water refining plant (6) and tower body.
2. styrene-butadiene rubber(SBR) styrene recovery device according to claim 1, it is characterized in that: tower body top sets gradually 4 sieve aperture tower trays from top to bottom, waste water refining plant (6) comprises waste water treating tower (16), waste water treating tower (16) bottom arranges vapour pipe (17), top connects stripping tower condenser (13) by prolong (15), bottom is communicated with Purified Water basin (18), Purified Water basin (18) bottom connects refining water pump (20), and the outlet of refining water pump (20) arranges several discharge nozzles (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420015906.6U CN203668267U (en) | 2014-01-10 | 2014-01-10 | Device for recovering styrene in styrene butadiene rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420015906.6U CN203668267U (en) | 2014-01-10 | 2014-01-10 | Device for recovering styrene in styrene butadiene rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668267U true CN203668267U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420015906.6U Withdrawn - After Issue CN203668267U (en) | 2014-01-10 | 2014-01-10 | Device for recovering styrene in styrene butadiene rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755509A (en) * | 2014-01-10 | 2014-04-30 | 山东齐鲁石化工程有限公司 | Styrene-butadiene rubber styrene recycling process and device |
-
2014
- 2014-01-10 CN CN201420015906.6U patent/CN203668267U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755509A (en) * | 2014-01-10 | 2014-04-30 | 山东齐鲁石化工程有限公司 | Styrene-butadiene rubber styrene recycling process and device |
| CN103755509B (en) * | 2014-01-10 | 2015-04-08 | 山东齐鲁石化工程有限公司 | Styrene-butadiene rubber styrene recycling process and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140625 Effective date of abandoning: 20150408 |
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| RGAV | Abandon patent right to avoid regrant |