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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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
29.09.1982
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Edition | 3 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: ZA19810007176 |