SEPARATION OF CARBON DIOXIDE AND HYDROGEN
    2.
    发明申请
    SEPARATION OF CARBON DIOXIDE AND HYDROGEN 审中-公开
    二氧化碳和氢气的分离

    公开(公告)号:US20100126180A1

    公开(公告)日:2010-05-27

    申请号:US12452819

    申请日:2008-07-08

    IPC分类号: F25J3/06 F02C3/28

    摘要: This invention relates to the recovery of carbon dioxide (26) and hydrogen (3,24) concentrated form from shifted a synthesis gas stream comprising hydrogen and carbon dioxide thereby generating a carbon dioxide stream that is sequestered or used for enhanced oil recovery and a hydrogen stream that is used as fuel for a power plant thereby generation electricity. In the process of the present invention a shifted synthesis gas stream is fed to a hydrogen selective membrane separation unit (M101) at a pressure of at least 50 bar gauge and the hydrogen rich permeate stream (3) is fed directly to the combustor of a gas turbine without any requirement to re-compress the hydrogen. The residual gas stream (carbon dioxide enriched stream) from the membrane separation unit is cooled using at least one, preferably, at least two external refrigeration stages (E-101, E-102, E-103, E-104) such that the hydrogen containing offgas (24) is also obtained at above the operating pressure of the combustor of the gas turbine.

    摘要翻译: 本发明涉及从包含氢气和二氧化碳的合成气流中转移二氧化碳(26)和浓缩形式的氢(3,24),从而产生被隔离或用于提高油采收率的二氧化碳流和氢 用作发电厂的燃料的流,从而发电。 在本发明的方法中,将移动的合成气流以至少50巴的压力供给到氢选择性膜分离单元(M101),并将富氢渗透物流(3)直接供给到燃烧器 燃气轮机,而不需要重新压缩氢气。 使用至少一个,优选至少两个外部制冷级(E-101,E-102,E-103,E-104)冷却来自膜分离单元的残余气流(富二氧化碳流),使得 在燃气轮机的燃烧器的工作压力以上也可获得含氢废气(24)。

    SEPARATION OF CARBON DIOXIDE AND HYDROGEN
    3.
    发明申请
    SEPARATION OF CARBON DIOXIDE AND HYDROGEN 审中-公开
    二氧化碳和氢气的分离

    公开(公告)号:US20110203313A1

    公开(公告)日:2011-08-25

    申请号:US12737608

    申请日:2009-07-24

    IPC分类号: F25J3/00

    摘要: A process for separating a synthesis gas stream into a hydrogen (H2) rich vapour stream and a liquid carbon dioxide (CO2) stream in a CO2 condensation plant comprising the steps of: (A) feeding a synthesis gas stream having a pressure in the range of 10 to 120 barg to a compression system of the CO2 condensation plant thereby increasing its pressure to 150 to 400 barg and cooling the resulting high pressure (HP) synthesis gas against an external coolant to remove at least part of the heat of compression; (B) cooling the HP synthesis gas stream to a temperature in the range of −15 to −55° C. by passing the HP synthesis gas stream through a heat exchanger system in heat exchange relationship with a plurality of refrigerant streams that are produced subsequently in the process; (C) passing the cooled HP synthesis gas stream formed in step (B) either directly or indirectly to a gas-liquid separator vessel that is operated at substantially the same pressure as the heat exchanger system and withdrawing a high pressure (HP) hydrogen rich vapour stream from the top of the separator vessel and a high pressure (HP) liquid CO2 stream from the bottom of the separator vessel; and (D) feeding the HP hydrogen rich vapour stream from step (C) to the turboexpansion system wherein the hydrogen rich vapour stream is subjected to isentropic expansion in each of the turboexpanders of the series such that hydrogen rich vapour streams are withdrawn from the turboexpanders of the series at reduced temperature and at successively reduced pressures and wherein isentropic expansion of the hydrogen rich vapour in each of the turboexpanders of the series generates motive power thereby driving a machine that is a component of the CO2 condensation plant and/or driving an alternator of an electric generator.

    摘要翻译: 一种在CO 2冷凝设备中将合成气流分离成富氢(H 2)蒸气流和液态二氧化碳(CO 2)流的方法,包括以下步骤:(A)将压力在该范围内的合成气流 对于CO 2冷凝设备的压缩系统为10至120巴,从而将其压力增加至150至400巴,并将所得高压(HP)合成气冷却至外部冷却剂以去除至少部分压缩热; (B)通过使HP合成气流与随后产生的多个制冷剂流以热交换关系与热交换器系统相通,将HP合成气流冷却至-15至-55℃的温度 正在进行中; (C)将在步骤(B)中形成的冷却的HP合成气流直接或间接地通到气体 - 液体分离器容器,所述气液分离容器在与热交换器系统基本相同的压力下运行并且抽出高压(HP)富氢 来自分离器容器的顶部的蒸汽流和来自分离器容器的底部的高压(HP)液体CO 2流; 和(D)将来自步骤(C)的HP富氢蒸气流供给到涡轮膨胀系统,其中富氢蒸气流在该系列的每个涡轮膨胀机中进行等熵膨胀,使得富氢蒸气流从涡轮膨胀机 该系列在降温和连续降低的压力下,并且其中该系列的每个涡轮膨胀机中的富氢蒸汽的等熵膨胀产生动力,从而驱动作为二氧化碳冷凝设备的组件的机器和/或驱动交流发电机 的发电机。