Preparation of petroleum pitch
    1.
    发明授权
    Preparation of petroleum pitch 失效
    石油沥青的制备

    公开(公告)号:US4039423A

    公开(公告)日:1977-08-02

    申请号:US556856

    申请日:1975-03-10

    IPC分类号: C10C3/00 C10G51/04 C10G3/00

    CPC分类号: C10G51/04 C10C3/00

    摘要: A process having a particular sequence of steps, each under specified conditions, for preparing a petroleum pitch binder suitable for electrodes used in smelting aluminum is disclosed. In the essential steps of the invention a decant oil petroleum fraction is heat treated under pressure, the treated material is flashed to a lower pressure, and finally the material is oxy-activated under elevated temperature conditions to form a petroleum pitch having the desired properties.

    摘要翻译: 公开了一种在特定条件下具有特定步骤顺序的方法,用于制备适用于冶炼铝的电极的石油沥青粘合剂。 在本发明的基本步骤中,将滗析油石油馏分在压力下进行热处理,将经处理的材料闪蒸至较低的压力,最后在高温条件下将材料氧活化,形成具有所需性能的石油沥青。

    Petroleum pitch preparation
    2.
    发明授权
    Petroleum pitch preparation 失效
    石油沥青制备

    公开(公告)号:US4013540A

    公开(公告)日:1977-03-22

    申请号:US556831

    申请日:1975-03-10

    CPC分类号: C10G9/005 C10C3/00 C10C3/04

    摘要: A process having a specified sequence of steps for preparing a petroleum pitch binder suitable for electrodes used in smelting aluminum is disclosed, in which a decant oil petroleum fraction is oxy-activated under specified conditions of temperature, pressure, and time, then heat treated under other specified conditions, and finally distilled under specified conditions to form a petroleum pitch having desired properties.

    摘要翻译: 公开了一种具有规定的用于制备适用于冶炼铝电极的石油沥青粘合剂的步骤步骤的方法,其中在特定的温度,压力和时间条件下将滗析油石油馏分氧活化,然后在 其他特定条件,最后在规定条件下蒸馏,形成具有所需性能的石油沥青。