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    Cetane improver in fuel oil
    13.
    发明授权
    Cetane improver in fuel oil 有权

    公开(公告)号：US10781386B2

    公开(公告)日：2020-09-22

    申请号：US16162859

    申请日：2018-10-17

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Kenneth C. H. Kar ,  Sheryl B. Rubin-Pitel ,  David T. Ferrughelli ,  Anthony S. Mennito ,  Teng Xu

    IPC: C10L1/23 ,  C10L1/18 ,  C10L10/12 ,  C10L1/08

    Abstract: Marine fuel oil compositions are provided that exhibit unexpectedly high cetane numbers after addition of a cetane improver. Methods of making such compositions are also provided. The unexpected nature of the marine fuel oil compositions is based in part on the ability to achieve a substantial improvement in estimated cetane number by addition of a cetane improver to a hydrocarbonaceous composition with a natural estimated cetane number of less than 35. These unexpectedly high increases in estimated cetane number for fuels or fuel blending components with low natural estimated cetane numbers can allow for production of fuel compositions with desirable combustion characteristics while also maintaining a higher level of aromatic compounds and/or reducing or minimizing the amount of distillate boiling range components in the fuel or fuel blending component.

    WAX FLOW VISCOSITY FOR FUELS
    14.
    发明申请
    WAX FLOW VISCOSITY FOR FUELS 审中-公开

    公开(公告)号：US20200291317A1

    公开(公告)日：2020-09-17

    申请号：US16716875

    申请日：2019-12-17

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Timothy J. Anderson ,  Erin R. Fruchey ,  Suzanne R. Golisz ,  Kenneth C. H. Kar ,  Sheryl B. Rubin-Pitel

    IPC: C10L1/08 ,  G01N11/00

    Abstract: Marine fuel compositions that are low sulfur and have improved wax flow viscosity are disclosed. An example marine fuel composition may have the following enumerated properties: a sulfur content of about 0.50% or less by weight of the marine fuel composition; a density at 15° C. of about 0.86 g/cm3 to about 1.01 g/cm3; a kinematic viscosity at 50° C. of about 1 centistoke to about 700 centistokes; and a ratio of kinematic viscosity to wax flow viscosity of greater than 1, wherein the wax flow viscosity is determined using a minimum operating viscosity of about 8 centistokes at 50° C.

    FUEL ADDITIVES WITH LOW NOx EMISSIONS
    20.
    发明申请
    FUEL ADDITIVES WITH LOW NOx EMISSIONS 有权

    公开(公告)号：US20210054298A1

    公开(公告)日：2021-02-25

    申请号：US16993850

    申请日：2020-08-14

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Logan P. Renninger ,  Scott K. Berkhous ,  Donald J. Mattran ,  Geert W. Steenbeke ,  Dongil Kang ,  Kenneth C. H. Kar

    IPC: C10L1/23 ,  C10L1/185 ,  C10L1/182 ,  C10L10/12 ,  C10L10/10 ,  C10L10/02 ,  C10L10/14

    Abstract: This disclosure relates to compositions and methods of making an additized fuel composition comprising a base fuel composition and a randomly branched nitrate composition. The randomly branched nitrate composition includes a plurality of primary nitrate molecules, each molecule therein having an empirical chemical formula of CnNO3, wherein Cn is a branched aliphatic moiety which may be the same or different for each molecule, n is an integer selected from the group consisting of 8, 9, 10, 11 and 12, at least one carbon atom in the branched aliphatic moiety being bound to three or more carbon atoms, a branching index ranging from 1.8 to 2.2, and greater than 80% of the branches in the aliphatic moiety being in other than the alpha position. The additized fuel composition may be diesel fuel composition or a gasoline fuel composition. Such randomly branched nitrate composition may be more stable, and thus safer to handle than 2-ethylhexylnitrate and may have a lower overall nitrogen content, leading to lower NOx emissions upon combustion in diesel and gasoline fuel compositions.

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