METHOD OF INCREASING MOLECULAR WEIGHT OF OLEFINS AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2014 - IPC C07C2/66 C07C2/06 C10G11/18 

FIELD: chemistry.

SUBSTANCE: present invention relates to methods (versions) and apparatus (versions) for converting olefins, mixed with paraffins, into compounds with a higher molecular weight. Heavier compounds can be fed for recirculation into a reactor for carrying out an FCC process or are fed into a separate apparatus for carrying out an FCC process. The method includes transporting C4 olefins and paraffins and C5-C7 olefins and paraffins into a conversion zone for converting C4 olefins into compounds derived from C4, having a higher molecular weight, via oligomerisation or alkylation of C4 olefins with aromatic compounds, and converting C5-C7 olefins into compounds derived from C5-C7, having a higher molecular weight, via alkylation of C5-C7 olefins with aromatic compounds; separating the compounds derived from C4 from C4 olefins and paraffins; separating the compounds derived from C5-C7 from C5-C7 olefins and paraffins; and feeding the compounds derived from C4 and compounds derived from C5-C7 into a fluid catalytic cracking (FCC) reactor. The apparatus comprises a fractionation column; an aromatic compound alkylation reactor; a second conversion zone for converting C4 olefins into compounds derived from C4, having a higher molecular weight; a stripping column for the product; and a pipe for the still residue of said stripping column for the product, which is linked to the FCC reactor.

EFFECT: easy separation of olefins from paraffins contained in a product stream.

10 cl, 5 dwg