Process to Maintain High Solvency of Recycle Solvent During Upgrading of Steam Cracked Tar

    公开(公告)号:US20200071626A1

    公开(公告)日:2020-03-05

    申请号:US16545976

    申请日:2019-08-20

    Abstract: Processes for improving hydrocarbon feedstock compatibility are provided. More specifically, a process for preparing a liquid hydrocarbon product includes heat soaking a tar stream to produce a reduced reactivity tar and blending the reduced reactivity tar with a utility fluid comprising recycle solvent to produce a lower viscosity, reduced reactivity tar. The process also includes hydroprocessing the lower viscosity, reduced reactivity tar at a temperature of greater than 350° C. to produce a total liquids product containing the liquid hydrocarbon product and the recycle solvent. The process further includes separating the recycle solvent from the total liquids product, where the recycle solvent has the SBN of greater than 110, and flowing the recycle solvent to the reduced reactivity tar for blending to produce the lower viscosity, reduced reactivity tar.

    Upgrading Hydrocarbon Pyrolysis Products
    47.
    发明申请
    Upgrading Hydrocarbon Pyrolysis Products 有权
    升级烃热解产物

    公开(公告)号:US20150315496A1

    公开(公告)日:2015-11-05

    申请号:US14683458

    申请日:2015-04-10

    Abstract: The invention relates to a utility fluid, such as a fluid containing aromatic and non-aromatic ringed molecules, useful as a diluent when hydroprocessing pyrolysis tar, such as steam cracker tar. The specified utility fluid comprises ≧10.0 wt % aromatic and non-aromatic ring compounds and each of the following: (a) ≧1.0 wt % of 1.0 ring class compounds; (b) ≧5.0 wt % of 1.5 ring class compounds; (c) ≧5.0 wt % of 2.0 ring class compounds; and (d) ≦0.1 wt % of 5.0 ring class compounds. The invention also relates to methods for producing such a utility fluid and to processes for hydroprocessing pyrolysis tar.

    Abstract translation: 本发明涉及一种效用流体,例如含有芳族和非芳族环状分子的流体,当加氢处理热解焦油(例如蒸汽裂解焦油)时可用作稀释剂。 指定的实用流体包含≥10.0重量%的芳香族和非芳香族环化合物,以下各项:(a)1.0重量%的1.0个环类化合物; (b)≥5.0重量%的1.5种环类化合物; (c)2.0重量%的2.0环类化合物; 和(d)≦̸ 0.1重量%的5.0环类化合物。 本发明还涉及制备这种效用流体的方法和用于加氢处理热解焦油的方法。

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