Cetane improver in fuel oil
    3.
    发明授权

    公开(公告)号:US10781386B2

    公开(公告)日:2020-09-22

    申请号:US16162859

    申请日:2018-10-17

    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.

    Method for selective extraction of surfactants from crude oil

    公开(公告)号:US10883055B2

    公开(公告)日:2021-01-05

    申请号:US15935471

    申请日:2018-03-26

    Abstract: A method for selective extraction of naphthenic acids from an acidic crude oil, including: providing an acidic crude oil including naphthenic acids and having a total acid number (TAN) greater than 0.4; mixing the acidic crude oil with a first aqueous solution including water and a weak base to extract a portion of naphthenic acids from the acidic crude oil thereby creating a second aqueous solution containing a mixture of the portion of naphthenic acids, the water and the weak base in an emulsion; separating the second aqueous solution from the emulsion; wherein the second aqueous solution contains an additional portion of the acidic crude oil; adding a salt to the second aqueous solution, thereby causing the additional portion of the acidic crude oil to separate from the second aqueous solution; removing the additional portion of the acidic crude oil from the second aqueous solution; and extracting the portion of the naphthenic acids from the second aqueous solution.

    CETANE IMPROVER IN FUEL OIL
    5.
    发明申请

    公开(公告)号:US20190127651A1

    公开(公告)日:2019-05-02

    申请号:US16162859

    申请日:2018-10-17

    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.

    Characterization of petroleum saturates
    8.
    发明授权
    Characterization of petroleum saturates 有权
    石油饱和度的表征

    公开(公告)号:US09418828B2

    公开(公告)日:2016-08-16

    申请号:US13832564

    申请日:2013-03-15

    CPC classification number: H01J49/26 G01N33/2835 H01J49/164

    Abstract: A method for characterizing the saturates portion of a petroleum or hydrocarbon sample that includes compounds with boiling points of 1000° F. (538° C.) or higher includes use of laser desorption ionization (LDI) to desorb and vaporize petroleum saturates into the gas phase. After ionization, the saturate compounds cations can be detected using mass spectrometry. The mass spectrum generated from the ionized saturated compounds is then characterized by assigning molecular formulas to any “detected” masses that exhibit a peak with an intensity greater than a defined signal to noise threshold. After making the molecular assignments, the abundance of each assigned molecule can be determined based on the signal magnitude of the peaks in the mass spectrum. The assigned molecules and the corresponding abundances can then be grouped based on a variety of factors.

    Abstract translation: 用于表征包括沸点为1000°F(538℃)或更高的化合物的石油或烃样品的饱和部分的方法包括使用激光解吸电离(LDI)将石油饱和物解吸和蒸发到气体中 相。 电离后,可以使用质谱法检测饱和化合物阳离子。 从电离的饱和化合物产生的质谱图的特征在于将分子式分配给任何“检测到的”质量,其表现出具有大于定义的信噪比阈值的强度的峰。 在进行分子分配之后,可以基于质谱中峰的信号幅度来确定每个分配的分子的丰度。 分配的分子和相应的丰度可以根据多种因素分组。

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