Process and apparatus for separating mixtures of hydrogen and carbon monoxide
    59.
    发明公开
    Process and apparatus for separating mixtures of hydrogen and carbon monoxide 有权
    为氢和一氧化碳的混合物的分离方法和装置

    公开(公告)号:EP1074510A2

    公开(公告)日:2001-02-07

    申请号:EP00306579.4

    申请日:2000-08-02

    IPC分类号: C01B3/50 F25J3/00

    摘要: Hydrogen and carbon monoxide are separated from a condensate-containing gaseous mixture thereof by using (a) a("first") stripping column (8) to remove the hydrogen content of the CO-loaded methane stream (6) obtained by washing CO from the gaseous mixture, or the vapour portion from a phase separation thereof, ascending a methane wash column (2) and (b) a ("second") stripping column or a flash separator (30) to remove the hydrogen content of the feed gas condensate (9) obtained from the methane wash column (2), or the phase separation. The vapour stream (32) from the second stripping column or flash separator (30) is fed to the first stripping column (8). The liquid stream from the first stripping column and the liquid stream (33) from the second stripping column or flash separator (30) are fed (16, 17 , 19 & 20; 34 to 39) to different locations of a separation column (18) providing a gaseous carbon monoxide product stream (21) and a liquid methane wash recycle stream (3). The process improves the efficiency of the separation by avoiding dilution of the CO concentration of the feed gas condensate (9) with the CO-loaded methane stream (6) which occurs in prior art CO/hydrogen separations using a methane wash.

    摘要翻译: (6)中获得通过洗涤CO从氢和一氧化碳从含冷凝气态混合物通过使用(a)一(“第一”)汽提柱(8),以除去CO加载甲烷流的氢含量分离 所述气体混合物,或从相分离其蒸气部分,升甲烷洗涤塔(2)和(b)一(“第二”)汽提塔或闪蒸分离器(30),以除去进料气中的氢含量 从甲烷洗涤塔(2),或相分离的冷凝物(9)中获得。 从第二汽提塔或闪蒸分离器(30)的蒸气流(32)进料至所述第一汽提塔(8)。 来自第一汽提塔,并从第二汽提塔或闪蒸分离器(30)的液体物流(33)的液体流被馈送(16,17,19&20; 34至39),以分离柱的不同位置(18 )提供气态一氧化碳产物流(21)和液体甲烷洗涤循环流(3)。 该过程通过避免将进料气体冷凝物(9)与所述CO加载甲烷流中的CO浓度的稀释改进了分离的效率(6)执行发生在使用甲烷洗涤现有技术的CO /氢分离。