METHOD OF SEPARATING ISOBUTENE FROM LINEAR BUTENES

FIELD: petrochemical process. SUBSTANCE: isobutane is fractioned to substantially remove butenes present if mixed hydrocarbon stream containing 1-butene, 2-butene, and small amounts of butadiene. Mixed hydrocarbon stream is fed into reactor provided with distillation column containing alumina-suppor...

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Bibliographic Details
Main Authors PODREBARAK GARI G, ADAMS DZHON R
Format Patent
LanguageEnglish
Russian
Published 27.05.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:FIELD: petrochemical process. SUBSTANCE: isobutane is fractioned to substantially remove butenes present if mixed hydrocarbon stream containing 1-butene, 2-butene, and small amounts of butadiene. Mixed hydrocarbon stream is fed into reactor provided with distillation column containing alumina-supported PdO catalyst. The column is operated such as to prevent contact of 2-butene with catalyst and to maintain contact of 1-butene with catalyst to catalyze isomerization of the latter into 2-butene. 2-Butene is distilled off catalyst in order to shift the equilibrium so raising amount of 2-butene available. Simultaneously, isobutene and isobutane are separated from 2-butene. Any butadiene present in raw material is hydrogenized into butanes. Bottom residue is enriched with 2-butene. EFFECT: increased purity of separated isobutene. 14 cl, 1 dwg, 1 tbl
Bibliography:Application Number: RU20020103884