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    • 4. 发明公开
    • Process for the recovery of ethylene oligomers
    • Verfahren zur Gewinnung vonÄthylenoligomeren。
    • EP0021490A1
    • 1981-01-07
    • EP80200523.1
    • 1980-06-06
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    • Gum, Clarence ReedKister, Albert Theodore
    • C07C11/02C07C7/148C07C2/36
    • C07C11/02C07C2/36C07C7/14866Y02P20/52
    • A process for the oligomerization of ethylene in which ethylene is contacted in the liquid phase at elevated pressure with a nickel-containing oligomerization catalyst in the presence of an aliphatic diol solvent, a liquid hydrocarbon phase containing ethylene oligomers, dissolved ethylene, catalyst, diol solvent and a minor amount of diol solvent decomposition products is recovered under pressure from the resulting reaction mixture, residual amounts of catalyst are removed from the said liquid hydrocarbon phase as a sufficiently elevated pressure to maintain ethylene dissolved therein, dissolved ethylene is separated from the liquid hydrocarbon phase by flashing and the liquid hydrocarbon phase is optionally scrubbed with water, characterized in that the liquid hydrocarbon phase at any point after separation from the solvent phase is contacted with aqueous acid having a pH below 5, and a liquid hydrocarbon phase substantailly free of diol solvent decomposition products is recovered therefrom.
    • 一种乙烯低聚方法,其中在脂肪族二醇溶剂,含乙烯低聚物,溶解乙烯,催化剂,二醇溶剂的液体烃相存在下,乙烯在液相中在高压下与含镍低聚催化剂接触 并从所得反应混合物中在压力下回收少量的二醇溶剂分解产物,将剩余量的催化剂作为充分升高的压力从所述液态烃相中除去,以保持乙烯溶解在其中,将溶解的乙烯从液态烃 通过闪蒸和液相烃相任选地用水洗涤,其特征在于,从溶剂相分离后的任何点处的液体烃相与pH低于5的酸性水相接触,并且液相烃相基本上不含二醇 溶剂分解产物回收 erefrom。