C4 OLEFIN HYDROCARBON SYNTHESIS METHOD Russian patent published in 2009 - IPC C07C11/09 C07C11/167 C07C5/03 C07C4/06 C07C9/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing isobutylene and butadiene-1,3 through catalytic dehydrogenation of corresponding paraffin hydrocarbons on a chromia-alumina catalyst at high temperature, separation of dehydrogenation products through absorption-desorption and extractive rectification, obtaining commercial-grade isobutylene and butadiene-1,3 of C₄ olefin hydrocarbons, unconverted paraffins and combustible wastes: "light" and "heavy" unabsorbed gases and butadiene-acetylene concentrate, where the mixture of "heavy" unabsorbed gases with butadiene-acetylene concentrate and part of "light" unabsorbed gases is passed through a binary hydrogenation bed, one of which is nickel-chrome and the other aluminium-palladium, and a propane fraction is obtained at the output.

EFFECT: use of the given method increases utilisation of combustible wastes, obtaining a commercial-grade propane fraction through catalytic hydrogenation and longer service life of the catalyst.

1 cl, 1 ex, 1 dwg