PROCESS FOR UPGRADING OLEFINIC C4 CUTS

A C4 cut is upgraded according to the following steps: (a) the dried C4 cut is polymerized in the presence of fluorinated alumina, boron-alumina or silica-alumina, to convert at least 95% of isobutene to dimers and trimers, the conversion of the normal butenes being at most 3%, (b) the whole polymer...

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Bibliographic Details
Main Authors JUGUIN BERNARD, MIQUEL JEAN, COSYNS JEAN, PAGE JEAN FRANCOIS LE
Format Patent
LanguageEnglish
Published 29.09.1982
Edition3
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL
CHEMISTRY
CRACKING HYDROCARBON OILS
FIRELIGHTERS
FUELS
FUELS NOT OTHERWISE PROVIDED FOR
LIQUEFIED PETROLEUM GAS
LUBRICANTS
METALLURGY
MINERAL WAXES
NATURAL GAS
ORGANIC CHEMISTRY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Summary:A C4 cut is upgraded according to the following steps: (a) the dried C4 cut is polymerized in the presence of fluorinated alumina, boron-alumina or silica-alumina, to convert at least 95% of isobutene to dimers and trimers, the conversion of the normal butenes being at most 3%, (b) the whole polymerization effluent is hydro-isomerized in the presence of a group VIII metal catalyst, to isomerize at least 90% of the 1-butene of said effluent, (c) the hydro-isomerization effluent is fractionated and a resultant fraction is alkylated. Resultant alkylate and mixture of dimers and trimers can be mixed and used as gasoline.
Bibliography:Application Number: ZA19810007176