Process, including membrane separation, for separating hydrogen from hydrocarbons
    3.
    发明授权
    Process, including membrane separation, for separating hydrogen from hydrocarbons 失效
    包括膜分离的方法,用于从烃中分离氢

    公开(公告)号:US06264828B1

    公开(公告)日:2001-07-24

    申请号:US09317106

    申请日:1999-05-21

    IPC分类号: C10G900

    CPC分类号: C10G49/007 C10G49/22

    摘要: Processes for providing improved methane removal and hydrogen reuse in reactors, particularly in refineries and petrochemical plants. The improved methane removal is achieved by selective purging, by passing gases in the reactor recycle loop across membranes selective in favor of methane over hydrogen, and capable of exhibiting a methane/hydrogen selectivity of at least about 2.5 under the process conditions.

    摘要翻译: 在反应堆,特别是炼油厂和石油化工厂中提供改进的甲烷去除和氢再利用的方法。 改进的甲烷去除通过选择性吹扫来实现,其通过使反应器循环回路中的气体通过选择性地有利于甲烷而不是氢气的膜,并且能够在工艺条件下表现出至少约2.5的甲烷/氢气选择性。

    Natural gas separation using nitrogen-selective membranes of modest selectivity
    7.
    发明授权
    Natural gas separation using nitrogen-selective membranes of modest selectivity 有权
    使用氮选择性膜的天然气分离具有适度的选择性

    公开(公告)号:US06572678B1

    公开(公告)日:2003-06-03

    申请号:US10033680

    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 optionally excess carbon dioxide, water vapor or hydrogen sulfide. The invention relies on gas separation by membranes, using nitrogen/methane selective membranes. The membranes are characterized by having the capability to exhibit a nitrogen/methane selectivity between about 2 and 5 at a temperature higher than about −25° C. The gas may be brought to pipeline specification for nitrogen, and acid gases if present, without requiring the use of amine scrubbing or other acid gas removal technique.

    摘要翻译: 用于处理天然气或其它富含甲烷的气体以除去过量的氮气和任选地过量的二氧化碳,水蒸气或硫化氢的方法。 本发明依赖于使用氮/甲烷选择性膜的膜的气体分离。 膜的特征在于在高于约-25℃的温度下具有在约2和5之间显示氮/甲烷选择性的能力。可以将气体设置为管道规格的氮气和酸性气体(如果存在),而不需要 使用胺洗涤或其他酸性气体去除技术。

    Natural gas separation using nitrogen-selective membranes
    9.
    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。