Process for separating selected components from multi-component natural
gas streams
    1.
    发明授权
    Process for separating selected components from multi-component natural gas streams 失效
    从多组分天然气流中分离选定组分的方法

    公开(公告)号:US5660603A

    公开(公告)日:1997-08-26

    申请号:US523719

    申请日:1995-09-05

    摘要: A process for separating components of gas mixtures which have different hydrate forming characteristics which uses an aqueous liquid to absorb one of the gases preferentially by attaining conditions slightly above the catastrophic point at which gas hydrates form. Specifically, the separation of gas mixtures containing light hydrocarbons and carbon dioxide is accomplished without significantly reducing the pressure of the carbon dioxide or without requiring significant amounts of heat energy for regeneration.

    摘要翻译: 用于分离具有不同水合物形成特征的气体混合物的组分的方法,其使用水性液体优先通过获得稍高于形成气体水合物的灾难点的条件来吸收气体中的一种。 具体地说,分离含有轻烃和二氧化碳的气体混合物是在不明显降低二氧化碳压力或不需要大量热能用于再生的情况下完成的。

    Method and apparatus for purification of high CO.sub.2 content gas
    3.
    发明授权
    Method and apparatus for purification of high CO.sub.2 content gas 失效
    净化高二氧化碳含量气体的方法和装置

    公开(公告)号:US4563202A

    公开(公告)日:1986-01-07

    申请号:US643368

    申请日:1984-08-23

    IPC分类号: F25J3/02 F25J3/04

    摘要: Disclosed is a method and apparatus for separating and purifying carbon dioxide and natural gas contained in the associated gas of an oil well. Feed containing hydrocarbons, carbon dioxide, water and hydrogen sulfide, is fed to a stabilizer column where heavy hydrocarbons and water are removed. Hydrogen sulfide is then stripped from the gas in a carbon dioxide fractionator using a solvent which absorbs H.sub.2 S and increases the relative volatility of carbon dioxide to hydrogen sulfide. Overhead from the CO.sub.2 fractionator contains carbon dioxide and light hydrocarbons, which are then separated in a demethanizer column which produces liquid carbon dioxide as a bottoms product. The invention is particularly useful in recovering carbon dioxide from the associated gas of oil produced from enhanced oil recovery processes using carbon dioxide injection.

    摘要翻译: 公开了一种用于分离和净化包含在油井的伴生气体中的二氧化碳和天然气的方法和装置。 含有碳氢化合物,二氧化碳,水和硫化氢的进料被送入稳定塔,其中重质烃和水被除去。 然后使用吸收H 2 S的溶剂在二氧化碳分馏器中从气体中汽提出硫化氢,并将二氧化碳的相对挥发度提高到硫化氢。 来自二氧化碳分馏器的开销包含二氧化碳和轻质烃,然后在脱甲烷塔中分离,生成液体二氧化碳作为底部产物。 本发明特别可用于从使用二氧化碳注射的增强采油过程产生的油的相关气体中回收二氧化碳。

    Refrigeration process and apparatus
    4.
    发明授权
    Refrigeration process and apparatus 失效
    制冷过程和设备

    公开(公告)号:US4586344A

    公开(公告)日:1986-05-06

    申请号:US664024

    申请日:1984-10-23

    IPC分类号: F25B25/02 F25B15/00

    CPC分类号: F25B25/02

    摘要: Disclosed is a method and apparatus for refrigeration utilizing a combined mechanical and absorption cycle. Two immiscible or only partly miscible refrigerants are mixed and evaporated in an evaporator to cool a process stream. The refrigerants are separated in an absorber which absorbs one of the refrigerants from the vapor mixture. The non-absorbed refrigerant vapor is compressed and condensed, while the absorbed refrigerant is desorbed and condensed to produce respective liquid refrigerant streams to the evaporator. Optionally the vapor mixture from the evaporator is compressed in a first stage of compression prior to passing to the absorber.

    摘要翻译: 公开了利用组合的机械和吸收循环的制冷方法和装置。 将两种不混溶或仅部分混溶的制冷剂混合并在蒸发器中蒸发以冷却工艺流。 制冷剂在吸收器中从蒸气混合物吸收制冷剂中的一种而分离。 未吸收的制冷剂蒸气被压缩和冷凝,同时所吸收的制冷剂被解吸和冷凝,以产生到蒸发器的各种液体制冷剂流。 任选地,在通过吸收器之前,来自蒸发器的蒸汽混合物在压缩的第一阶段被压缩。