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    Method for producing chlorine
    1.
    发明授权
    Method for producing chlorine 有权
    生产氯的方法

    公开(公告)号：US08097232B2

    公开(公告)日：2012-01-17

    申请号：US11816045

    申请日：2006-02-20

    申请人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

    发明人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

    IPC分类号： C01B7/04

    CPC分类号： C01B7/075 ,  C01B7/04 ,  C01B7/0743

    摘要： A catalytic process for preparing chlorine from hydrogen chloride, which includes recycle of process streams with reduced accumulation of inert gases in the system is provided. The process includes a step wherein a compressed liquid stream comprising chlorine, carbon dioxide and oxygen is recycled into a column countercurrent to the ascending gas phase and feeding part of the chlorine-rich liquid phase leaving the bottom of the column back into the top of the column. Carbon dioxide present in the ascending gas stream is dissolved out of the gas stream and can later be separated from chlorine without problems by distillation.

    摘要翻译： 提供了一种从氯化氢制备氯的催化方法，其包括在系统中减少惰性气体积聚的工艺流的再循环。 该方法包括一个步骤，其中将包含氯气，二氧化碳和氧气的压缩液体流循环到与上升气相逆流的塔中，并使离开塔底的富氯液相的一部分进入到顶部 柱。 存在于上升气流中的二氧化碳从气流中溶解出来，随后可以通过蒸馏从氯中分离而无问题。

    Method For Producing Chlorine
    2.
    发明申请
    Method For Producing Chlorine 有权
    氯生产方法

    公开(公告)号：US20080159948A1

    公开(公告)日：2008-07-03

    申请号：US11816045

    申请日：2006-02-20

    申请人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

    发明人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

    IPC分类号： C01B7/04

    CPC分类号： C01B7/075 ,  C01B7/04 ,  C01B7/0743

    摘要： Process for preparing chlorine from hydrogen chloride, which comprises the steps: a) feeding of a stream a1 comprising hydrogen chloride and of a stream a2 comprising oxygen into an oxidation zone and catalytic oxidation of hydrogen chloride to chlorine, giving a product gas stream a3 comprising chlorine, water, oxygen, carbon dioxide and inert gases; b) cooling of the product gas stream a3 and removal of water and hydrogen chloride as aqueous hydrochloric acid, leaving a gas stream b comprising chlorine, water, oxygen, carbon dioxide and inert gases; c) optional drying of the gas stream b) to leave a gas stream c which is substantially free of water and comprises chlorine, oxygen, carbon dioxide and inert gases; d) at least partial liquefaction of the gas stream c and of a chlorine-rich recycle stream f1 comprising chlorine, oxygen and carbon dioxide by compression and cooling, giving an at least partially liquefied stream d; e) gas/liquid separation of the stream d into a gas stream e1 comprising chlorine, oxygen, carbon dioxide and inert gases and into a liquid stream e2 comprising chlorine, oxygen and carbon dioxide; f) feeding of at least part of the gas stream e1 into a membrane separation unit and fractionation by membrane separation to give the chlorine-rich recycle stream f1 and a gas stream f2 which is low in chlorine and comprises chlorine, oxygen and carbon dioxide and recirculation of the chlorine-rich recycle stream f1 to step d); g) separation of the liquid stream e2 by distillation into a chlorine stream g1 and a stream g2 comprising essentially oxygen and carbon dioxide.

    摘要翻译： 从氯化氢制备氯的方法，其包括以下步骤：a）将包含氯化氢的物流1和包含氧的物流2加入氧化区并将氯化氢催化氧化成氯，得到产物气流 a 3，包括氯，水，氧，二氧化碳和惰性气体; b）冷却产物气流a 3，除去水和氯化氢作为盐酸水溶液，留下包含氯，水，氧气，二氧化碳和惰性气体的气流b; c）气流的任选干燥b）留下基本上不含水的气流c，包括氯，氧，二氧化碳和惰性气体; d）通过压缩和冷却至少部分液化气流c和包含氯，氧和二氧化碳的富含氯的循环流f 1，产生至少部分液化的流d; e）将气流d气体/液体分离成包含氯气，氧气，二氧化碳和惰性气体的气流e 1并进入包含氯​​气，氧气和二氧化碳的液体流e 2中; f）将至少部分气流e 1进料到膜分离单元中并通过膜分离进行分馏，得到富氯循环流f 1和氯含量低的气流f 2，包括氯，氧和 二氧化碳和富氯循环流f 1再循环到步骤d）; g）通过蒸馏将液体流e 2分离成氯流g 1和基本上包含氧和二氧化碳的流g 2。

    Method for Producing Sodium Dithionite
    9.
    发明申请
    Method for Producing Sodium Dithionite 失效
    生产连二亚硫酸钠的方法

    公开(公告)号：US20080187484A1

    公开(公告)日：2008-08-07

    申请号：US11666973

    申请日：2005-11-03

    申请人： Armin Diefenbacher ,  Hartwig Voss ,  Reinhard Schneider

    发明人： Armin Diefenbacher ,  Hartwig Voss ,  Reinhard Schneider

    IPC分类号： C01B17/66

    CPC分类号： C01B17/66

    摘要： The invention relates to a process for the preparation of sodium dithionite, comprising the steps (a) provision of a synthesis batch comprising sodium formate, sulfur dioxide and an alkaline sodium compound in aqueous methanolic solution with formation of a sodium dithionite mother liquor, (b) isolation of sodium dithionite from the sodium dithionite mother liquor, a residual mother liquor being obtained, (c) separation of methanol from the residual mother liquor, (d) separation of the residual mother liquor into a thiosulfate-rich first part-stream and a thiosulfate-poor, formate-containing second part-stream by means of nanofiltration, (e) concentration of sodium formate in the second part-stream and (f) recycling of the concentrated second part-stream to process step (a).

    摘要翻译： 本发明涉及一种制备连二亚硫酸钠的方法，包括以下步骤：（a）在形成连二亚硫酸钠母液的水溶液中提供包含甲酸钠，二氧化硫和碱性钠化合物的合成批料，（b ）从连二亚硫酸钠母液中分离连二亚硫酸钠，得到残余母液，（c）从残余母液中分离甲醇，（d）将残余母液分离成富含硫代硫酸氢盐的第一部分流， （e）在第二部分流中浓缩甲酸钠，和（f）将浓缩的第二部分物流再循环到工艺步骤（a）中，通过纳滤法生产含有硫代硫酸盐的富含甲酸的第二部分物流。