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    Process for producing a purified synthesis gas
    33.
    发明公开
    Process for producing a purified synthesis gas 审中-公开
    Verfahren zur Herstellung eines gereinigten Synthesegases

    公开(公告)号：EP2236457A1

    公开(公告)日：2010-10-06

    申请号：EP09156579.6

    申请日：2009-03-30

    申请人： Shell Internationale Research Maatschappij B.V.

    发明人： Sprachmann, Gerald

    IPC分类号： C01B3/16 ,  C01B3/52 ,  C01B3/50 ,  C01B3/58 ,  C01B17/04 ,  C01B31/20 ,  C01B3/56 ,  C01B17/16

    CPC分类号： C01B3/16 ,  B01D53/75 ,  B01D2257/304 ,  B01D2257/308 ,  B01D2257/406 ,  B01D2257/408 ,  B01D2257/504 ,  C01B3/501 ,  C01B3/506 ,  C01B3/52 ,  C01B3/56 ,  C01B3/58 ,  C01B17/05 ,  C01B17/164 ,  C01B2203/0415 ,  C01B2203/0435 ,  C01B2203/0465 ,  C01B2203/0475 ,  C01B2203/0485 ,  Y02P20/152

    摘要： A process for producing a purified synthesis gas stream from a feed synthesis gas stream comprising besides the main constituents carbon monoxide and hydrogen also hydrogen sulphide, HCN and/or COS, the process comprising the steps of:
    (a) contacting one part of the feed synthesis gas stream with a water gas shift catalyst in a shift reactor in the presence of water/steam to react at least part of the carbon water/steam monoxide with water, to obtain a shifted synthesis gas stream enriched in hydrogen and in carbon dioxide;
    (b) contacting another part of the feed gas stream with a hydrolysis catalyst in the presence of water to remove HCN and/or COS to obtain a hydrolysed synthesis gas stream depleted in HCN and/or COS;
    (c) removing H 2 S from the shifted synthesis gas stream and from the hydrolysed synthesis gas stream by contacting these gas streams in a H 2 S-removal zone with an aqueous alkaline washing liquid to obtain a H 2 S-depleted synthesis gas stream and a sulphide-comprising aqueous stream;
    (d) contacting the sulphide-comprising aqueous stream with sulphide-oxidizing bacteria in the presence of oxygen in a bioreactor to obtain a sulphur slurry and a regenerated aqueous alkaline washing liquid;
    (e) removing carbon dioxide from the H 2 S-depleted synthesis gas stream, to obtain the purified synthesis gas stream.

    摘要翻译： 一种从原料合成气流生产纯化的合成气流的方法，除了主要成分一氧化碳和氢气外，还包括硫化氢，HCN和/或COS，该方法包括以下步骤：（a）使一部分进料 合成气流与水煤气变换催化剂在变换反应器中，在水/蒸汽存在下使至少部分碳水/一氧化碳与水反应，以获得富含氢气和二氧化碳的转移合成气流; （b）在水存在下使进料气流的另一部分与水解催化剂接触以除去HCN和/或COS以获得耗尽HCN和/或COS的水解合成气流; （c）通过将H 2 S去除区中的这些气流与碱性洗涤液水溶液接触，从移动的合成气流和水解的合成气流中除去H 2 S，得到H 2 S的合成气流 和含硫化物的水流; （d）在氧气存在下在生物反应器中使含硫化物的水流与硫化物氧化细菌接触以获得硫浆料和再生的含水碱性洗涤液体; （e）从除去H 2 S的合成气流中除去二氧化碳，以获得纯化的合成气流。