Process and apparatus for liquefying hydrogen
    4.
    发明授权
    Process and apparatus for liquefying hydrogen 失效
    液化氢的方法和装置

    公开(公告)号:US07559213B2

    公开(公告)日:2009-07-14

    申请号:US11087053

    申请日:2005-03-22

    IPC分类号: F25J1/00 F17C9/02

    摘要: Hydrogen is liquefied by a process comprising pre-cooling hydrogen feed gas by indirect heat exchange against pressurized liquefied natural gas (“LNG”) to produce pre-cooled hydrogen feed gas and pressurized natural gas, further cooling at least a portion of said pre-cooled hydrogen feed gas by indirect heat exchange against at least one refrigerant to produce condensable hydrogen gas and expanding at least a portion of said condensable hydrogen gas to produce at least partially condensed hydrogen. One advantage of such a process is that the power consumed during liquefaction is significantly less than that consumed in existing hydrogen liquefaction processes which pre-cool hydrogen feed gas by indirect heat exchange against other refrigerants, e.g. liquid nitrogen.

    摘要翻译: 氢气通过包括通过与加压液化天然气(“LNG”)的间接热交换预冷氢气进料气体以产生预冷氢气进料气体和加压天然气的方法液化,进一步冷却至少一部分所述预处理气体, 通过与至少一种制冷剂的间接热交换来冷却氢气进料气体,以产生可冷凝氢气,并使至少一部分可冷凝氢气膨胀以产生至少部分冷凝的氢气。 这种过程的一个优点是在液化期间消耗的功率明显小于在现有的氢液化过程中消耗的功率,其中氢气进料气体通过与其它制冷剂的间接热交换而预冷却氢气。 液氮。

    Purification of carbon dioxide
    5.
    发明授权
    Purification of carbon dioxide 有权
    二氧化碳的净化

    公开(公告)号:US07416716B2

    公开(公告)日:2008-08-26

    申请号:US11287640

    申请日:2005-11-28

    IPC分类号: C01B31/20 C01B17/74 C01B21/40

    摘要: SO2 and/or NOx are removed from gaseous CO2 at elevated pressure(s) in the presence of molecular oxygen and water and, when SO2 is to be removed, NOx, to convert SO2 to sulfuric acid and/or NOx to nitric acid. The sulfuric acid and/or nitric acid is/are then removed from the gaseous carbon dioxide to produce SO2-free, NOx-lean carbon dioxide gas. The invention has particular application in the removal of SO2 and/or NOx from carbon dioxide flue gas produced in an oxyfuel combustion process, for example, in a pulverized coal fired power station.

    摘要翻译: 在分子氧和水的存在下,在升高的压力下从气态CO 2 2中除去SO 2和/或NO x x, 当要除去SO 2的情况下,将SO 2 SO 2转化为硫酸和/或NO 2 x N 2 >硝酸。 然后从气态二氧化碳中除去硫酸和/或硝酸以产生无SO 2,无水二氧化碳气体。 本发明特别适用于在氧燃料燃烧过程中产生的二氧化碳烟道气中除去SO 2和/或NO x 2,例如在粉煤燃烧 发电厂。

    Integration of a cryogenic air separator with synthesis gas production
and conversion
    7.
    发明授权
    Integration of a cryogenic air separator with synthesis gas production and conversion 失效
    将低温空气分离器与合成气生产和转化相结合

    公开(公告)号:US6117916A

    公开(公告)日:2000-09-12

    申请号:US232954

    申请日:1999-01-18

    摘要: The invention provides an improvement in the utilization of hydrocarbon feedstock by partial oxidation with oxygen to form a synthesis gas comprising carbon monoxide and hydrogen and subjecting the synthesis gas to a conversion process comprising an exothermic reaction. The oxygen is provided by air separation in which the feed air is at least partially compressed by work generated by expansion of a working fluid vaporized by indirect heat exchange with at least one of the synthesis gas and the exothermic reaction. The improvement is that the working fluid is preheated by indirect heat exchange with adiabatically compressed feed air, thereby improving the overall efficiency of the process and reducing capital costs compared with conventional generally isothermal feed air compression. Preferably, the gas conversion process is a catalytic hydrogenation to prepare paraffinic hydrocarbons (Fischer-Tropsch reaction), methanol or dimethylether.

    摘要翻译: 本发明通过用氧部分氧化来提供烃原料的利用,以形成包含一氧化碳和氢气的合成气,并使合成气进行包括放热反应的转化方法。 通过空气分离提供氧气,其中通过与通过与合成气和放热反应中的至少一种间接热交换蒸发的工作流体的膨胀而产生的作用至少部分地压缩进料空气。 改进之处在于,通过与绝热压缩的进料空气进行间接热交换来预热工作流体,从而与传统的通常的等温进料空气压缩相比,提高了该方法的整体效率并降低了投资成本。 优选地,气体转化过程是催化氢化以制备链烷烃(费 - 托反应),甲醇或二甲醚。

    Integrated production of oxygen and electric power
    8.
    发明授权
    Integrated production of oxygen and electric power 失效
    综合生产氧气和电力

    公开(公告)号:US5657624A

    公开(公告)日:1997-08-19

    申请号:US427779

    申请日:1995-04-25

    摘要: A method for the recovery of oxygen from air in which a high-temperature ion transport membrane system is integrated with combustion turbine system. Coproduction of oxygen and electric power is achieved in an alternative embodiment by integrating a combined cycle power generation system with an ion transport membrane system. The design performance of the gas turbine in the combined cycle system is maintained by controlled water injection into the membrane non-permeate stream, all or a portion of which optionally is introduced into the gas turbine combustor. Water can be introduced directly into the combustor air inlet. Alternatively, makeup air is added to the membrane feed to maintain the performance of the gas turbine. NOx formation is reduced by introducing the oxygen-depleted non-permeate from the membrane system to the gas turbine combustor.

    摘要翻译: 一种用于从空气中回收氧气的方法,其中高温离子迁移膜系统与燃气轮机系统一体化。 通过将联合循环发电系统与离子迁移膜系统相集成,可以在替代实施例中实现氧气和电力的共同生产。 燃气轮机在联合循环系统中的设计性能通过将受控的水注入膜非渗透物流中来维持,其全部或一部分任选地被引入到燃气轮机燃烧器中。 水可直接引入燃烧器空气入口。 或者,补充空气被添加到膜进料中以保持燃气轮机的性能。 通过将氧耗尽的非渗透物从膜系统引入到燃气轮机燃烧器来减少NOx的形成。