Process for the recovery of polymerization grade butene-1

Details Process for the recovery of polymerization grade butene-1 Process for the recovery of polymerization grade butene-1

C - Chemistry, Metallurgy

07

C

202/88, 260/719.

C07C 7/04 (2006.01) C07C 7/00 (2006.01) C07C 11/08 (2006.01)

Patent

CA 1232919

CASE 1803 "PROCESS FOR THE RECOVERY OF POLYMERIZATION GRADE BUT- ENE-1" Abstract of the disclosure Polymerizaiton grade butene-1 is recovered from a C4 stream containing butene-1, isobutane, isobutene, n- butane, buteanes-2 and reduced amounts of C3 and C5 hydro- carbons, butadiene and acetylenic hydrocarbons, by sub- mitting the stream to the following stages: etherifying with an aliphatic alcohol to the purpose of eliminating the isobutene, which is transformed into the alkyl-tert- butyl ether corresponding to the alcohol used, separa- tion of the tertiary ether thus formed from the remain- ing of the stream, separation by means of distillation of the isobutane, separation from the residual stream, by distillation, of butene-1 at a purity level of from 80% to 95%, selective hydrogenation of the butadiene and of the acetylenic derivatives contained in the said stream of butene-1 at the said purity level, distillation of the hydrogenated stream with separation of polymerization grade butene-1.

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