METHOD OF ISOMERISATION OF RAW MATERIAL FLOW, CONTAINING ONE OR MORE C4-C5 HYDROCARBONS Russian patent published in 2015 - IPC C07C5/22 C07C9/10 C07C9/14 C07C7/04 

FIELD: chemistry.

SUBSTANCE: method includes: A) bringing flow of raw material in reaction zone of isomerisation with catalyst of isomerisation under conditions of isomerisation, in order to obtain flow, which flows out of isomerisation zone, B) into zone of stabiliser and extraction of stabilised upper flow, which contains one or more C5- hydrocarbons, lower flow, which contains at least 85 wt % of one or more C6+ hydrocarbons, and side fraction, which contains at least 85 wt % of one or more C5+ hydrocarbons. Then C) passing at least part of side fraction in evaporating zone; and D) supply of lower flow of evaporating column, which contains at least 90 wt % of one or more C5+ hydrocarbons, into zone of separating C5 and passing of flow from zone of separation of hydrocarbons C5 in reaction zone of isomerisation.

EFFECT: method demands lower engineering provision for recirculation of C5 stream.

10 cl, 5 tbl, 1 dwg