METHOD OF HYDROISOMERISATION OF DOUBLE BONDS Russian patent published in 2009 - IPC C07C5/25 C07C11/08 B01J8/02 C07C5/13 

FIELD: chemistry.

SUBSTANCE: invention relates to two versions of a method of hydromerisation of C4 olefin double bond, one of which involves feeding hydrogen, carbon monoxide and a stream of material containing isobutane, isobutylene, 1-butene and 2-butene into a reaction zone, which is a catalytic distillation column, in which there is a hydroisomerisation catalyst for hydroisomerisation of double bonds; conversion of part of the said 1-butene to 2-butene; formation of a bottom product which contains 2-butene, and a distillate which contains isobutene and isobutylene, and feeding carbon monoxide into the said reaction zone in amount ranging from 0.001 to 0.03 mole of carbon monoxide per mole of hydrogen, where the said reaction zone has a defined length in the axial direction, and the said carbon monoxide is fed into the said reaction zone in several feed points, lying along the said length in the axial direction.

EFFECT: more efficient hydroisomerisation of 1-butene double bond with formation of 2-butene.

14 cl, 5 ex, 7 tbl, 14 dwg