Butylene isomerization process

Details Butylene isomerization process Butylene isomerization process

1982-09-29

1983-10-18

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By skeletal isomerization

203 82, 203 84, 585332, 585664, 585802, 585809, C07C 524, C07C 704

Patent

active

044107544

ABSTRACT:
An olefin isomerization process useful in recovering isobutylene from mixed butylene feed streams is disclosed. Preferably, the feed stream is passed through a first reaction zone to convert some butene-1 to butene-2 and then fed to the lower part of a two-part fractionation system. The butene-2-rich bottoms is withdrawn and the overhead vapor is passed through a second reaction zone in admixture with hydrogen before entering the second or upper part of the fractionation system. The bottoms liquid of the upper part of the fractionation system flows into the lower part of the fractionation system. Isobutylene and recycle hydrogen are recovered from the overhead vapor of the upper part of the fractionation system.

REFERENCES:
patent: 2421229 (1947-05-01), Zimmerman
patent: 3800003 (1974-03-01), Sobel
patent: 3821123 (1974-06-01), Germanas et al.
patent: 4104321 (1978-08-01), Ward
patent: 4217461 (1980-08-01), Ward

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