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    • 30. 发明授权
    • Process for safe membrane operation
    • 安全膜操作的过程
    • US07329306B1
    • 2008-02-12
    • US11001731
    • 2004-12-02
    • David R. Koch
    • David R. Koch
    • B01D53/22
    • B01D53/22B01D53/002B01D2256/24B01D2257/504C10G31/11Y02C10/10Y02C20/20Y10S55/15Y10S55/25
    • A process is disclosed for shut-down of a membrane separation zone comprising a non-permeate side and a permeate side and processing a feed stream comprising a non-permeable component, a less-readily permeable, condensable component, and a readily permeable component. When the feed stream is not passed to the membrane separation zone, a purge stream is passed to the non-permeate side of the membrane separation to remove a residual gas stream and thereby prevent condensation of the less-readily permeable, condensable component upon depressurization and/or cooling of the membrane separation zone. This purge stream is provided by taking a feed stream, lowering its pressure which leads to cooling and then passing the cooled stream through a gas-liquid separator to removed condensed liquids. The need is reduced for oversizing membrane system which reduces treating costs and prevents permeate damage to membrane surfaces caused by condensation of less-readily permeable, condensable components such as C6+ hydrocarbons.
    • 公开了一种用于关闭包含非渗透侧和渗透侧的膜分离区并处理包含不可渗透组分,不易渗透的可冷凝组分和易渗透组分的进料流的方法。 当进料流未被传送到膜分离区时,清洗流被传递到膜分离的非渗透侧以除去残余气流,从而防止在减压时不容易渗透的可冷凝组分的冷凝和 /或冷却膜分离区。 该吹扫流通过进料流提供,降低其压力,导致冷却,然后使冷却的流通过气液分离器以除去冷凝液体。 需要减小过大的膜系统,这降低了处理成本,并且防止了由不易渗透的可冷凝组分如C 6 C 6 SO 3 CO 2的冷凝引起的对膜表面的渗透损伤 。