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    • 8. 发明专利
    • PURIFICATION OF DIOLEFIN HYDROCARBON STEAM
    • JP2001058964A
    • 2001-03-06
    • JP2000219288
    • 2000-07-19
    • UOP LLC
    • COTTRELL PAUL R
    • B01J23/72B01J23/94C07C7/167C07C11/167
    • PROBLEM TO BE SOLVED: To increase the quality of diolefin hydrocarbon stream in low costs as the catalyst activity is persistently retained by treating the diolefin hydrocarbon stream including a trace amount of acetylene compounds and hydrogen under specific conditions. SOLUTION: (A) A diolefin stream, for example, a butadiene stream, containing a trace amount of acetylene compounds and hydrogen is introduced into the selective hydrogenation zone 6 to partially hydrogenate the acetylene compounds, (B) bringing the selective hydrogenation catalyst into contact with a polymer solvent, for example, a 4-8C alkene or the like in the hydrogenation zone 6, (C) one or a plurality of the effluents from the hydrogenation zone 6 are fed to one or more of the fractionation zone 8 to form the diolefin hydrocarbon including a reduced concentration of acetylene compounds and the stream including the polymer solvent and polymer compounds, (D) a part of the stream including the polymer solvent and the polymer compound is circulated and recovered and (E) the diolefin hydrocarbon stream that is prepared in the step C and includes a reduced concentration of the acetylene compound is recovered.