Abtrennung aliphatischer Paraffine durch Adsorption

摘要

The invention relates to a process 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, the said process being characterised by the use of at least one adsorbing bed comprising at least one grafted microporous solid. The preferred use of the said process relates to the case where a charge resulting from an isomerisation region is treated as follows: - at least one adsorbing bed makes it possible to separate the charge into a first effluent comprising the normal paraffins and into a second effluent, then, - at least one absorbing bed over which the second effluent passes, comprising at least one grafted microporous solid, makes it possible to obtain a third effluent comprising the monomethyl-branched paraffins and a fourth effluent comprising the polymethyl-branched paraffins.