| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a method for isomerisation of C-Chydrocarbons with supply of circulating hydrogen, which includes loading hydrogen and feedstock containing C-Chydrocarbons into an isomerisation zone, products of which are fed into a separator, removing a product stream containing Cor heavier hydrocarbons from below the separator into a fractionation unit consisting of at least one fractionation column, and removing from the top of the separator a gas stream consisting of hydrogen and light hydrocarbons, which is subjected to recirculation using a recirculating compressor for combining with the feedstock, into which an additional amount of hydrogen is fed if necessary. The method includes purification of the circulating hydrogen stream from Cand Chydrocarbons, which are the end products of the isomerisation process, to a value not greater than presence thereof in the feedstock, and also from components which boil at a temperature higher than the boiling point of isopentane. The fractionation unit consists of a stabiliser, a first and a second fractionation column. The present invention also relates to an apparatus for carrying out said method.EFFECT: use of the present method enables to obtain an isomerisation product having a high octane number.16 cl, 2 tbl, 6 dwg |
