Etherification processing of light hydrocarbons
    2.
    发明授权
    Etherification processing of light hydrocarbons 失效
    轻烃的醚化处理

    公开(公告)号:US4204077A

    公开(公告)日:1980-05-20

    申请号:US948072

    申请日:1978-10-02

    CPC分类号: C07C41/06 C07C41/38

    摘要: In the processing of olefinic hydrocarbon mixtures containing isobutylene and isoamylene which are etherified with methanol to obtain higher octane components, unreacted methanol is removed from the etherified mixture by contact with a separate liquid glycol phase before unreacted hydrocarbons, substantially free of methanol, are distilled from the etherified mixture for further catalytic processing in which methanol is deleterious to the catalyst.

    摘要翻译: 在含有异丁烯和异戊烯的烯烃混合物的处理中,其与甲醇醚化以获得较高的辛烷成分,通过与单独的液体二醇相接触,从醚化的混合物中除去未反应的甲醇,在将未反应的烃(基本上不含甲醇)从 用于进一步催化加工的醚化混合物,其中甲醇对催化剂有害。

    Method for processing etherified light hydrocarbon mixtures to remove
methanol
    3.
    发明授权
    Method for processing etherified light hydrocarbon mixtures to remove methanol 失效
    加工醚化轻烃混合物以除去甲醇的方法

    公开(公告)号:US4218569A

    公开(公告)日:1980-08-19

    申请号:US886366

    申请日:1978-03-14

    IPC分类号: C07C41/06 C07C41/12

    CPC分类号: C07C41/06 C07C41/38

    摘要: Mixed hydrocarbons of predominantly four carbon atoms each are subjected to etherification with methanol, to make ether from the tertiary olefin in the mixture; the unreacted hydrocarbons, after separation from the ether by distillation, are contaminated with methanol which is removed by absorption or extraction with a glycol before the hydrocarbons are subjected to further processing in which the methanol is detrimental.

    摘要翻译: 主要有四个碳原子的混合烃各自用甲醇进行醚化,从混合物中的叔烯烃中制得乙醚; 在通过蒸馏从乙醚中分离出来之后,未反应的烃被甲醇污染,甲醇被吸收或用二醇萃取除去,然后烃进一步加工,其中甲醇是有害的。

    Preparation of petroleum pitch
    4.
    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。