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AssigneeInstitute Francais du Petrole
InventorsEric Benazzi, Gerard Hotier, Jean-Marie Basset, Agnes Choplin, Albert Theolier, Christophe Nedez
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For the at least partial separation of aliphatic paraffins into at least one effluent comprising the least branched paraffins and at least one effluent comprising the most branched paraffins, use is made of at least one adsorbent bed comprising at least one grafted microporous solid. A preferred use of the invention relates to the treatment of a charge obtained from an isomerization zone, whereby at least one adsorbent bed makes it possible to separate the charge into a first effluent comprising the normal paraffins and a second effluent, and at least one adsorbent bed on which passes the second effluent, comprising at least one grafted microporous solid, making it possible to obtain a third effluent comprising the monomethyl branched paraffins and a fourth effluent comprising the polymethyl branched paraffins.
A process for separating aliphatic paraffins having varying degrees of branching in a hydrocarbon charge containing molecules of 5 to 14 carbon atoms into at least one first effluent comprising less branched paraffins and at least one second effluent comprising more branched paraffins, said process comprising contacting the hydrocarbon charge with at least one adsorbent bed comprising at least one microporous solid having grafted in the pores thereof an organometallic compound of a quantity and shape sufficient to yield pores selective for entry of the less branched paraffins but not the more branched paraffins.
Dependencies are inferred from the claim text.