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8 条记录 (耗时 0.03 秒)

    Use of activated carbon adsorbent in argon and/or oxygen controlling hydrogen PSA
    7.
    发明授权
    Use of activated carbon adsorbent in argon and/or oxygen controlling hydrogen PSA 有权
    在氩气和/或氧气中使用活性炭吸附剂控制氢PSA

    公开(公告)号：US06261343B1

    公开(公告)日：2001-07-17

    申请号：US09260294

    申请日：1999-03-02

    申请人： Timothy Christopher Golden ,  Thomas Stephen Farris ,  Robin Joyce Maliszewskyj ,  Tracey A Cook

    发明人： Timothy Christopher Golden ,  Thomas Stephen Farris ,  Robin Joyce Maliszewskyj ,  Tracey A Cook

    IPC分类号： B01D53047

    CPC分类号： B01D53/02 ,  B01D53/047 ,  B01D2253/102 ,  B01D2253/108 ,  B01D2253/304 ,  B01D2257/104 ,  B01D2257/108 ,  B01D2257/11 ,  B01D2257/502 ,  B01D2259/404 ,  B01D2259/406 ,  B01D2259/4062 ,  B01D2259/4146 ,  C01B3/56 ,  C01B2203/043 ,  C01B2203/0465 ,  C01B2203/047

    摘要： The present invention provides a pressure swing adsorption process. The process includes providing a pressure swing adsorption apparatus having a discharge end adsorption layer of activated carbon, feeding through the apparatus a feed gas including hydrogen, carbon monoxide and at least one of argon and oxygen, and collecting a product gas from the apparatus, wherein the product gas is high purity hydrogen. Also provided is a method for decreasing an amount of impurities in a product gas from a pressure swing adsorption process for separating hydrogen from impurities including carbon monoxide, and at least one of argon and oxygen. The method includes providing an improved adsorption layer in at least a discharge end of a pressure swing adsorption apparatus in which the pressure swing adsorption process is conducted, wherein the improved adsorption layer includes activated carbon in an amount effective to: (a) decrease the amount of impurities in the product gas; (b) increase a time until initial impurity breakthrough; and (c) improve hydrogen recovery of the process.

    摘要翻译： 本发明提供一种变压吸附方法。 该方法包括提供具有活性炭排出端吸附层的变压吸附装置，通过该装置供给包括氢气，一氧化碳和氩气和氧气中的至少一种的进料气体，并收集来自装置的产物气体，其中 产物气体为高纯度氢气。 还提供了用于从用于从包括一氧化碳的杂质和氩和氧中的至少一种中分离氢的变压吸附方法来减少产物气体中的杂质量的方法。 该方法包括在变压吸附装置的至少一个排出端中提供改进的吸附层，其中进行变压吸附过程，其中改进的吸附层包括活性炭，其量有效：（a）减少量 产品气体中的杂质; （b）增加直到初始杂质突破的时间; 和（c）提高该方法的氢回收率。

    Dimethylformamide synthesis via reactive distillation of methyl formate and dimethylamine
    8.
    发明授权
    Dimethylformamide synthesis via reactive distillation of methyl formate and dimethylamine 失效
    通过甲酸甲酯和二甲胺的反应蒸馏二甲基甲酰胺合成

    公开(公告)号：US06723877B1

    公开(公告)日：2004-04-20

    申请号：US10462916

    申请日：2003-06-16

    申请人： Robin Joyce Maliszewskyj ,  Michael Gerard Turcotte ,  John William Mitchell

    发明人： Robin Joyce Maliszewskyj ,  Michael Gerard Turcotte ,  John William Mitchell

    IPC分类号： C07C23300

    CPC分类号： C07C231/02 ,  C07C67/40 ,  Y02P20/127 ,  C07C69/07 ,  C07C233/03

    摘要： A continuous process for the production of dimethylformamide comprising the steps: (a) reacting methyl formate and dimethylamine in a reactive distillation column under conditions to form dimethylformamide and by-product methanol; (b) vaporizing the by-product methanol and generating a liquid dimethylformamide while in said reactive distillation column; (c) removing at least a major portion of the by-product methanol as an overhead from said reactive distillation column; (d) removing a crude liquid dimethylformamide containing residual by-product methanol as a bottoms fraction from said reactive distillation column; (e) introducing said bottoms fraction containing dimethylformamide and residual by-product methanol to a purification column wherein the by-product methanol is removed from said dimethylformamide as an overhead and purified dimethylformamide is removed as a bottoms fraction; and, optionally, (f) recycling the by-product methanol removed as an overhead from the purification column to the reactive distillation column.

    摘要翻译： 一种用于生产二甲基甲酰胺的连续方法，包括以下步骤：（a）在反应性蒸馏塔中使甲酸甲酯和二甲基胺在形成二甲基甲酰胺和副产物甲醇的条件下反应;（b）蒸发副产物甲醇并产生液体二甲基甲酰胺 同时在所述反应蒸馏塔中;（c）从所述反应蒸馏塔中除去至少大部分副产物甲醇作为塔顶馏出物;（d）除去作为底部馏分的残留副产物甲醇的粗液体二甲基甲酰胺， 所述反应性蒸馏塔;（e）将含有二甲基甲酰胺和残余副产物甲醇的塔底馏分引入纯化塔，其中副产物甲醇作为塔顶馏出物从所述二甲基甲酰胺中除去，纯化的二甲基甲酰胺作为塔底馏分除去; 和（f）将从塔顶馏去的副产物甲醇从净化塔循环到反应蒸馏塔。