Separation of chloromethane, isobutylene, and isoprene
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This post was last edited by I am kind on 2016-12-11 09:53. In the butyl rubber recycling unit, the content of isobutylene dimer in the chloromethane and isobutylene separation towers is above the specified limit; in the isobutylene and isoprene separation towers, the level of dimers (likely isobutylene oligomers and isoprene oligomers) is also above the allowed limit； To ensure the smooth production of the device, are there any experts who can analyze the reasons behind the formation of various oligomers and provide solutions? ；
Don’t you add an inhibitor in your tower?
At a certain temperature, dienes seem to polymerize
Isobutylene has fairly good stability (currently, there is no evidence of isobutylene oligomerization in the subsequent separation stages of units that produce isobutylene from MTBE decomposition); however, isoprene will definitely polymerize (significant polymers form when it passes through alumina-based catalysts at around 50 degrees Celsius), and this can only be prevented by the use of anti-polymerization agents； The stability of chloromethane also affects the polymerization process; it needs to be removed to a certain level, otherwise this material cannot be utilized.