Devolatilization method of trans-butadiene-isoprene rubber
A butyl pentylene rubber, devolatilization technology, applied in the production of bulk chemicals, etc., can solve the problems of polymer degradation, system temperature rise, equipment blockage, etc., and achieve the effect of simple process, broad application prospects, and good overall effect
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[0045] Example 1
[0046] A sample of trans-butadiene rubber (100g) was put into the extraction tank, and the supercritical fluid was introduced at the extraction temperature of 45℃ to increase the extraction pressure to 10MPa; at the extraction temperature of 45℃, the extraction pressure was 10MPa, and the flow rate was Under the condition of 5kg / h~8kg / h, extract for 2h; every 15min, the supercritical fluid containing volatile matter obtained by extraction is led out, and then processed by separation tank 1, separation tank 2 and activated carbon adsorption device; among them, separation tank 1, Separation tank 2 separates the supercritical fluid from the volatiles (isoprene, dimer) by means of reduced pressure separation. The supercritical fluid is adsorbed and purified by activated carbon and then transported to the carbon dioxide storage tank to realize the recycling of the supercritical fluid. After the devolatilization is over, cut off the supercritical fluid inlet, slowly ...
Example Embodiment
[0048] Example 2
[0049] A sample of trans-butadiene rubber (100g) was put into the extraction tank, and the supercritical fluid was introduced at the extraction temperature of 45°C to increase the extraction pressure to 15MPa; at the extraction temperature of 45°C, the extraction pressure was 15MPa, and the flow rate was Under the condition of 5kg / h~8kg / h, extract for 2h; every 15min, the supercritical fluid containing volatile matter obtained by extraction is exported, and then processed by separation tank 1, separation tank 2 and activated carbon adsorption device; of which, separation tank 1, Separation tank 2 separates the supercritical fluid from the volatiles (isoprene, dimer) by means of reduced pressure separation. The supercritical fluid is adsorbed and purified by activated carbon and then transported to the carbon dioxide storage tank to realize the recycling of the supercritical fluid. ; After the devolatilization is over, cut off the supercritical fluid inlet, slow...
Example Embodiment
[0051] Example 3
[0052] A sample of trans-butadiene rubber (100g) was put into the extraction tank, and the supercritical fluid was introduced at the extraction temperature of 55°C to increase the extraction pressure to 10MPa; at the extraction temperature of 55°C, the extraction pressure was 10MPa, and the flow rate was Under the condition of 5kg / h~8kg / h, extract for 2h; every 15min, the supercritical fluid containing volatile matter obtained by extraction is exported, and then processed by separation tank 1, separation tank 2 and activated carbon adsorption device; of which, separation tank 1, Separation tank 2 separates the supercritical fluid from the volatiles (isoprene, dimer) by means of reduced pressure separation. The supercritical fluid is adsorbed and purified by activated carbon and then transported to the carbon dioxide storage tank to realize the recycling of the supercritical fluid. After the devolatilization is over, cut off the supercritical fluid inlet, slowly...
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