FIELD: isobutene isolation.
SUBSTANCE: invention relates to a method for the isolation of isobutene. Described is a method for separating isobutene from a stream of C4 hydrocarbons containing at least 1-butene, 2-butene, isobutane and isobutene, comprising feeding the material stream enriched in isobutane and isobutene obtained from the stream of C4 hydrocarbons and a stream of hydrogen into the isomerization reactor in the presence of a catalyst, followed by rectification of the resulting streams. A process unit for isobutene recovery is described in the manner described above.
EFFECT: obtaining isobutene of high purity.
14 cl, 4 dwg
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