Separation of 1-butene from C 4 feed streams

Details Separation of 1-butene from C 4 feed streams Separation of 1-butene from C 4 feed streams

2006-12-12

2006-12-12

Caldarola, Glenn (Department: 1764)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

C585S822000, C585S825000, C585S826000, C585S829000, C095S144000

Reexamination Certificate

active

07148392

ABSTRACT:
In a process for selectively separating 1-butene from a C4feed stream comprising at least 1-butene, cis-2-butene and trans-2-butene, the feed stream is passed through a first bed of an adsorbent comprising a crystalline microporous material to form a substantially trans-2-butene-free effluent stream. Then, the substantially trans-2-butene-free effluent stream is passed through a second bed of an adsorbent comprising a crystalline microporous material to form a substantially 1-butene-free effluent stream, whereby the 1-butene is separated from the feed stream. The adsorbed 1-butene is then typically desorbed from the second adsorbent bed either by lowering the pressure or raising the temperature of the bed.

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