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Process for the isomerisation of normal C5/C6 paraffins with normal paraffins et methyl pentanes recycling
Process for the isomerisation of normal C5/C6 paraffins with normal paraffins et methyl pentanes recycling
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机译：用正构烷烃异构化正构C5 / C6石蜡的方法以及甲基戊烷的再循环
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摘要
Process for isomerisation of C5/C6 n-paraffins into isoparaffins, which comprises: - a stage (1) of isomerisation of a feedstock consisting of a light naphtha and recycling of a stream rich in methylpentanes and in normal paraffins; - an adsorption stage (2) carried out by passing the isomerisation effluent over an adsorbent which retains n-paraffins; and, alternating with the adsorption stage (2), a desorption stage (3) carried out by lowering the pressure and stripping by means of a methylpentanes-rich gas stream originating from the deisohexanisation stage (4); and - a stage (4) of deisohexanisation of the adsorption effluent. The isomerate freed from the n-paraffins in stage (2) and distilled in stage (4) is a product with a high octane value.
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