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Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step. The first bottoms stream is distilled to produce a bottoms product stream comprising diisobutylene and a second overhead stream comprising tertiary butyl alcohol and diisobutylene.he reaction product stream, comprising diisobutylene, isobutylene, TBA, and water, is purified by a process a shown in. . The reaction product stream is passed via line 11 to a first distillation tower 10. Tower 10 contains 35 ideal stages, 11 above feed and 24 below feed.
polybutylene pipe was thought to be the plumbing product of the future in the late 1970s it was cheap flexible and easy to install what was not anticipated was that chlorine in city water supplies attacks the pipe from the inside outbursting polybutylene pipe has caused extensive damage to homes across the countryhe most common place to find polybutylene pipe is in feed pipes for toilets and sinks this gray flexible pipe is still available it was used by many do it yourselfers for routine plumbing maintenance replacing these pipes is easy and inexpensive and can be done by the average homeowner