NAFTA FRACTIONAL SEPARATION TOWER HEAT RECOVERY Russian patent published in 2018 - IPC C10G7/00 B01D3/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the naphtha stream separation methods. Heat recovery method in the naphtha stream separation process includes: the naphtha stream (10) separation in the naphtha separation tower (16) into the light naphtha containing head stream (22), and the heavy naphtha containing bottom stream (24); the naphtha separation tower (16) head stream (22) division into at least first stream (22a) and second stream (22b); naphtha separation tower (16) head stream (22) first stream (22a) heat recovery in the first heat exchanger (28); second tower (18) heating with heat extracted from the naphtha separation tower (16) head stream (22) first stream (22a) heat recovery in the first heat exchanger (28); naphtha separation tower (16) head stream (22) second stream (22b) heat recovery in the second heat exchanger (26); and the third tower (20) heating with heat extracted from the naphtha separation tower (16) head stream (22) second stream (22b) heat recovery in the first heat exchanger (26).

EFFECT: reduction of capital costs and energy consumption.

7 cl, 1 dwg, 3 tbl