Dephlegmator process for nitrogen rejection from natural gas
    22.
    发明授权
    Dephlegmator process for nitrogen rejection from natural gas 失效
    天然气排氮脱水工艺

    公开(公告)号:US4732598A

    公开(公告)日:1988-03-22

    申请号:US929045

    申请日:1986-11-10

    IPC分类号: C07C7/00 F25J3/02 F25J3/04

    摘要: A process is disclosed for the rejection of nitrogen from natural gas with the optional recovery of natural gas liquids. The process of the present invention employs a dephlegmator which provides a high purity nitrogen reflux for a low pressure distillation column and provides subcooling of the feed and reflux to the low pressure column and reboiling of the low pressure column. The dephlegmator of the present invention combines the high pressure column and three heat exchangers of a conventional double column process into a single, compact unit, with corresponding reductions in interconnecting piping and capital investment.

    摘要翻译: 公开了用于天然气排除氮气的方法,其中天然气液体可以任选回收。 本发明的方法使用分馏塔,其为低压蒸馏塔提供高纯氮回流,并将进料和回流过冷至低压塔和低压塔的再沸腾。 本发明的分凝器将高压塔和传统双塔工艺的三个热交换器组合成单个紧凑的单元,相应地减少了互连管道和资本投资。

    Dual dephlegmator process to separate and purify syngas mixtures
    24.
    发明授权
    Dual dephlegmator process to separate and purify syngas mixtures 失效
    双分馏工艺分离纯化合成气混合物

    公开(公告)号:US4525187A

    公开(公告)日:1985-06-25

    申请号:US579845

    申请日:1984-07-12

    IPC分类号: C07C7/09 F25J3/02

    摘要: The present invention involves a process for separating and purifying gas mixtures comprising H.sub.2, CO and C.sub.1 + hydrocarbons. The gas is initially cooled in a high pressure dephlegmator to condense and rectify the C.sub.1 + hydrocarbons leaving a combined H.sub.2 --CO vapor. The condensed C.sub.1 + hydrocarbons are partially vaporized and subsequently recondensed in a second, low pressure dephlegmator with further rectification. This process yields H.sub.2 --CO vapor streams and a C.sub.1 + liquid hydrocarbon product at purities suitable for subsequent commercial operations.

    摘要翻译: 本发明涉及一种用于分离和纯化包含H 2,CO和C 1 +烃的气体混合物的方法。 气体最初在高压分凝器中冷却,以冷凝和整流C1 +烃,离开组合的H2-CO蒸汽。 冷凝的C1 +烃部分蒸发,随后在第二个低压分馏器中重新冷凝,进一步精馏。 该方法产生的H2-CO蒸汽流和C1 +液态烃产品的纯度适合于随后的商业操作。