Method for treating a pyrolysis gasoline

    公开(公告)号:US10793788B2

    公开(公告)日:2020-10-06

    申请号:US16336963

    申请日:2017-09-01

    Inventor: Adrien Gomez

    Abstract: The present invention relates to a method for treating a pyrolysis gasoline C5+ containing monoolefinic, diolefinic and sulfur hydrocarbons, comprising at least, and in any order: a) a step of hydrotreating the pyrolysis gasoline or a hydrocarbon fraction C6+ originating from the pyrolysis gasoline, in the presence of hydrogen and at least one hydrotreatment catalyst at a temperature ranging between 220 and 380° C. so as to produce a hydrotreated effluent; b) a step of separating the pyrolysis gasoline or the hydrotreated effluent originating from step a) when said step is completed before step b), into a separation column for separating into a top hydrocarbon fraction C5− and a bottom hydrocarbon fraction C6+, said separation column comprising a reboiling section including two heat exchangers, at least one of the two exchangers being configured to perform a heat exchange with a portion of the bottom fraction that is recycled in the column via the reboiling section. According to the invention, one of the two heat exchangers of the reboiling section is supplied with at least one portion of the hydrotreated effluent so as to supply part of the heat required to operate the reboiling section.

    Process for hydrodesulphurizing an olefinic gasoline

    公开(公告)号:US10377956B2

    公开(公告)日:2019-08-13

    申请号:US15788249

    申请日:2017-10-19

    Abstract: A process for the treatment of a gasoline containing sulphur-containing compounds, olefins and diolefins: a) fractionating the gasoline into at least: a light gasoline cut LCN; a primary intermediate gasoline cut, MCN; and a primary heavy gasoline cut HHCN; b) desulphurizing the primary intermediate gasoline cut MCN alone producing an at least partially desulphurized primary intermediate gasoline cut MCN; c) desulphurizing the primary heavy gasoline cut HHCN alone producing an at least partially desulphurized primary heavy gasoline cut HHCN; d) sending, as a mixture, the partially desulphurized primary intermediate gasoline cut MCN and the partially desulphurized primary heavy gasoline cut HHCN to a separation column separating a gaseous stream containing hydrogen and H2S, a secondary intermediate gasoline cut MCN with low sulphur and mercaptans contents and a secondary heavy gasoline cut HHCN containing sulphur-containing compounds including recombinant mercaptans; e) desulphurizing the secondary heavy gasoline cut HHCN obtained from step d).

Patent Agency Ranking