Natural gas separation using nitrogen-selective membranes
    23.
    发明授权
    Natural gas separation using nitrogen-selective membranes 有权
    使用氮选择性膜的天然气分离

    公开(公告)号:US06565626B1

    公开(公告)日:2003-05-20

    申请号:US10035404

    申请日:2001-12-28

    IPC分类号: B01D5322

    摘要: A process for treating natural gas or other methane-rich gas to remove excess nitrogen and carbon dioxide simultaneously. The invention relies on membrane separation using nitrogen/methane and carbon dioxide/methane selective membranes. The gas can typically be brought to pipeline specification for both components, without requiring the use of amine scrubbing or other acid gas removal technique. Where water vapor or hydrogen sulfide is present in the raw gas, these contaminants may also be removed to meet pipeline specification in a single operation.

    摘要翻译: 一种处理天然气或其他富含甲烷的气体以同时去除过量的氮和二氧化碳的方法。 本发明依赖于使用氮/甲烷和二氧化碳/甲烷选择性膜的膜分离。 通常可以将气体用于两种组分的管道规格,而不需要使用胺洗涤或其它酸性气体去除技术。 在原始气体中存在水蒸气或硫化氢的情况下,也可以在单次操作中除去这些污染物以满足管道规格。

    Selective purge for catalytic reformer recycle loop
    26.
    发明授权
    Selective purge for catalytic reformer recycle loop 失效
    催化重整器回收循环的选择性吹扫

    公开(公告)号:US6165350A

    公开(公告)日:2000-12-26

    申请号:US83653

    申请日:1998-05-22

    IPC分类号: C10G35/06 C10G35/00

    CPC分类号: C10G35/06

    摘要: Processes and apparatus for providing improved catalytic reforming, specifically improved recovery of reformate and hydrogen from catalytic reformers. The improvement is achieved by passing portions of the reactor effluent or streams derived from the reactor effluent across membranes selective in favor of light hydrocarbons over hydrogen.

    摘要翻译: 用于提供改进的催化重整的方法和设备,特别是改进了催化重整器的重整产物和氢的回收。 通过将来自反应器流出物的反应器流出物或来自反应器流出物的部分通过薄膜选择性地优于轻质烃超过氢气来实现改进。

    Sour gas treatment process
    29.
    发明授权
    Sour gas treatment process 失效
    酸气处理工艺

    公开(公告)号:US5407467A

    公开(公告)日:1995-04-18

    申请号:US143496

    申请日:1993-10-25

    摘要: Improved membranes and improved membrane processes for treating gas streams containing hydrogen sulfide, carbon dioxide, water vapor and methane, particularly natural gas streams. The processes rely on the availability of two membrane types, one of which has a hydrogen sulfide/methane selectivity of at least about 40 when measured with multicomponent gas mixtures at high pressure. Based on the different permeation properties of the two membrane types, optimized separation processes can be designed.

    摘要翻译: 改进的膜和改进的膜方法,用于处理含有硫化氢,二氧化碳,水蒸汽和甲烷,特别是天然气流的气流。 这些方法依赖于两种膜类型的可用性,当在高压下用多组分气体混合物测量时,其中之一具有至少约40的硫化氢/甲烷选择性。 基于两种膜类型的不同渗透性能,可以设计优化的分离过程。

    Sour gas treatment process including membrane and non-membrane treatment
steps
    30.
    发明授权
    Sour gas treatment process including membrane and non-membrane treatment steps 失效
    酸性气体处理工艺包括膜和非膜处理步骤

    公开(公告)号:US5407466A

    公开(公告)日:1995-04-18

    申请号:US143285

    申请日:1993-10-25

    摘要: Improved processes for treating gas streams containing hydrogen sulfide, carbon dioxide, water vapor and methane, particularly natural gas streams. The processes rely on the availability of two membrane types, one of which has a hydrogen sulfide/methane selectivity of at least about 40 when measured with multicomponent gas mixtures at high pressure. Based on the different permeation properties of the two membrane types, optimized separation processes can be designed. The membrane separation is combined with non-membrane treatment of the residue and/or permeate streams.

    摘要翻译: 用于处理含有硫化氢,二氧化碳,水蒸气和甲烷,特别是天然气流的气流的改进方法。 这些方法依赖于两种膜类型的可用性,当在高压下用多组分气体混合物测量时,其中之一具有至少约40的硫化氢/甲烷选择性。 基于两种膜类型的不同渗透性能,可以设计优化的分离过程。 膜分离与残留物和/或渗透物流的非膜处理相结合。