METHOD OF ISOMERISATION OF RAW MATERIAL FLOW, CONTAINING ONE OR MORE C4-C6 HYDROCARBONS Russian patent published in 2015 - IPC C07C5/27 C07C9/14 C10L1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to method of isomerisation of raw material flow, containing one or more C4-C6 paraffins, which includes: A) contact of raw material flow with isomerisation catalyst in reaction zone of isomerisation under isomerisation conditions in order to obtain flow, discharged from isomerisation zone; B) passing part of flow, discharged from isomerisation zone, into stabiliser zone, and withdrawal of stabilised upper flow, containing one or more C5-hydrocarbons, lower flow, which contains 85 wt % of one or more C6+ hydrocarbons, and raw material flow of stripping column, containing 10 wt % of one or more C5+ hydrocarbons; C) passing raw material flow of stripping column into stripping zone and separation of raw material flow of stripping zone into upper flow of stripping column, containing 5 wt % of one or more C4-hydrocarbons, and lower flow of stripping column, containing 90 wt % of one or more C5+ hydrocarbons; and (D) supply of part of lower flow of stripping column into zone of isopentane withdrawal, which contains column for isopentane withdrawal, and supply of lower flow from column for isopentane withdrawal into reaction zone of isomeration.

EFFECT: method requires less engineering support.

10 cl, 6 tbl, 2 dwg