Process for recovery of olefinically unsaturated nitriles
    47.
    发明授权
    Process for recovery of olefinically unsaturated nitriles 失效
    回收烯属不饱和腈的方法

    公开(公告)号:US06860971B2

    公开(公告)日:2005-03-01

    申请号:US09964296

    申请日:2001-09-20

    摘要: A process is described for the recovery of acrylonitrile from an ammoxidation reactor effluent stream containing acrylonitrile, water, and organic impurities. The process includes the steps of (a) quenching an ammoxidation reactor effluent stream that includes acrylonitrile, water, and organic impurities with an aqueous quench stream, thereby producing a cooled reactor effluent stream; (b) passing the cooled reactor effluent stream through an absorption column, thereby generating an absorber bottoms stream that includes water, acrylonitrile, and organic impurities; and (c) passing the absorber bottoms stream through a single recovery/stripper column, generating an acrylonitrile-rich overhead stream, a lean water side stream, and a recovery/stripper bottoms stream that includes organic impurities. The acrylonitrile-rich overhead stream can be passed through a decanter to separate water from acrylonitrile. The lean water side stream can be recycled for use in the absorption column.

    摘要翻译: 描述了从含有丙烯腈,水和有机杂质的氨氧化反应器流出物流中回收丙烯腈的方法。 该方法包括以下步骤:(a)用水淬火流将包括丙烯腈,水和有机杂质的氨氧化反应器流出物流骤冷,从而产生冷却的反应器流出物流; (b)将冷却的反应器流出物流通过吸收塔,从而产生包含水,丙烯腈和有机杂质的吸收塔底流; 和(c)使吸收塔底流通过单个回收/汽提塔,产生富含丙烯腈的塔顶馏出物流,贫水侧流和包含有机杂质的回收/汽提塔塔底流。 富含丙烯腈的塔顶馏出物流可通过倾析器将水与丙烯腈分离。 贫水侧流可以再循环用于吸收塔。

    Process for recovery of olefinically unsaturated nitriles
    48.
    发明申请
    Process for recovery of olefinically unsaturated nitriles 失效
    回收烯属不饱和腈的方法

    公开(公告)号:US20020143131A1

    公开(公告)日:2002-10-03

    申请号:US09964296

    申请日:2001-09-20

    IPC分类号: C08F020/44 C08F120/44

    摘要: A process is described for the recovery of acrylonitrile from an ammoxidation reactor effluent stream containing acrylonitrile, water, and organic impurities. The process includes the steps of (a) quenching an ammoxidation reactor effluent stream that includes acrylonitrile, water, and organic impurities with an aqueous quench stream, thereby producing a cooled reactor effluent stream; (b) passing the cooled reactor effluent stream through an absorption column, thereby generating an absorber bottoms stream that includes water, acrylonitrile, and organic impurities; and (c) passing the absorber bottoms stream through a single recovery/stripper column, generating an acrylonitrile-rich overhead stream, a lean water side stream, and a recovery/stripper bottoms stream that includes organic impurities. The acrylonitrile-rich overhead stream can be passed through a decanter to separate water from acrylonitrile. The lean water side stream can be recycled for use in the absorption column.

    摘要翻译: 描述了从含有丙烯腈,水和有机杂质的氨氧化反应器流出物流中回收丙烯腈的方法。 该方法包括以下步骤:(a)用水淬火流将包括丙烯腈,水和有机杂质的氨氧化反应器流出物流骤冷,从而产生冷却的反应器流出物流; (b)将冷却的反应器流出物流通过吸收塔,从而产生包含水,丙烯腈和有机杂质的吸收塔底流; 和(c)使吸收塔底流通过单个回收/汽提塔,产生富含丙烯腈的塔顶馏出物流,贫水侧流和包含有机杂质的回收/汽提塔塔底流。 富含丙烯腈的塔顶馏出物流可通过倾析器将水与丙烯腈分离。 贫水侧流可以再循环用于吸收塔。