Conversion of MEROX process by-products to useful products in an integrated refinery process

    公开(公告)号:US11261386B2

    公开(公告)日:2022-03-01

    申请号:US16878939

    申请日:2020-05-20

    摘要: An integrated refinery process for removing mercaptans from a hydrocarbon stream containing mercaptans and converting by-product disulfide oil to useful products. The process includes introducing the hydrocarbon stream containing mercaptans into an extraction vessel containing an alkaline solution and passing the hydrocarbon stream through an extraction section of the extraction vessel which includes one or more liquid-liquid contacting decks for reaction to convert the mercaptans to alkali metal alkanethiolates. Further, the process includes withdrawing a hydrocarbon product stream free of mercaptans from the extraction vessel and recovering spent caustic containing alkali metal alkanethiolates from the extraction vessel. Additionally, the process includes subjecting the spent caustic containing alkali metal alkanethiolates to air oxidation to produce a by-product stream containing disulfide oils (DSO) and sulfides and processing the by-product stream in a steam cracking unit to produce a DSO free product stream.

    Low-sulfur aromatic-rich fuel oil blending component

    公开(公告)号:US11248176B2

    公开(公告)日:2022-02-15

    申请号:US16554057

    申请日:2019-08-28

    IPC分类号: C10G21/14 C10G29/20

    摘要: Refinery processes, systems, and compositions for making an aromatic blending component for fuel oil, and a fuel oil blend using the same. Valuable hydrocarbons like kerosene can be reduced or eliminated from fuel oil blends by adding certain aromatic blending components derived from the aromatic bottoms stream of an aromatic recovery complex. The aromatic blending component can be used in lieu of more costly hydrocarbon streams to decrease the overall viscosity of the fuel oil blend without adding sulfur.

    Lubricity additive for transportation fuels

    公开(公告)号:US10927318B2

    公开(公告)日:2021-02-23

    申请号:US16210445

    申请日:2018-12-05

    摘要: Oxidized disulfide oil (ODSO) compounds, derived from by-product disulfide oil (DSO) compounds from the MEROX process, are effective as lubricity additives for transportation fuels. Significant increases in lubricity of ultra-low sulfur fuels as measured by the WSD test were observed with addition of ODSO compounds in the range of from 0.1 ppmw to 10 ppmw. This use of ODSO compounds as lubricity additives converts an otherwise DSO waste oil product into a valuable commodity that has utility in improving lubricity properties of transportation fuels.