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    • 5. 发明申请
    • PROCESS FOR PRODUCING PURIFIED SYNTHESIS GAS
    • 生产纯化合成气的方法
    • WO2010112501A1
    • 2010-10-07
    • PCT/EP2010/054186
    • 2010-03-30
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.VAN DEN BORN, Isaac CormelisVAN HEERINGEN, Gijsbert JanSMIT, Cornelis JacobusWOLDHUIS, Alex Frederik
    • VAN DEN BORN, Isaac CormelisVAN HEERINGEN, Gijsbert JanSMIT, Cornelis JacobusWOLDHUIS, Alex Frederik
    • B01D53/14C01B3/16C01B3/52C01B17/04C01B17/05
    • C01B3/16B01D53/1425B01D53/1462B01D2251/206B01D2256/16B01D2256/20B01D2257/304B01D2257/308B01D2257/406B01D2257/408B01D2257/504C01B3/52C01B17/0408C01B17/05C01B2203/0415C01B2203/0475C01B2203/0485Y02C10/06Y02P20/152
    • The invention provides 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, carbonyl sulphide and/or hydrogen cyanide and optionally ammonia, the process comprising the steps of: (a) contacting the feed synthesis gas stream with a water gas shift catalyst in a shift reactor in the presence of water and/or steam to react at least part of the carbon monoxide to carbon dioxide and hydrogen and at least part of the hydrogen cyanide to ammonia and/or at least part of the carbonyl sulphide to hydrogen sulphide, to obtain a shifted synthesis gas stream enriched in H2S and in CO 2 and optionally comprising ammonia; (b) removing H 2 S and CO 2 from the shifted synthesis gas stream by contacting the shifted synthesis gas stream with an absorbing liquid to obtain semi-purified synthesis gas and an absorbing liquid rich in H 2 S and CO 2 ; (c) heating at least part of the absorbing liquid rich in H 2 S and CO 2 in a heater to obtain heated absorbing liquid rich in H2S and CO 2 ; (d) de-pressurising the heated absorbing liquid rich in H 2 S and CO 2 in a flash vessel, thereby obtaining flash gas rich in CO 2 and absorbing liquid rich in H 2 S; (e) contacting the absorbing liquid rich in H 2 S at elevated temperature with a stripping gas, thereby transferring H 2 S to the stripping gas to obtain regenerated absorbing liquid and stripping gas rich in H 2 S; (f) converting H 2 S in stripping gas rich in H 2 S to elemental sulphur; (g) removing H 2 S from the semi-purified synthesis gas by converting H 2 S in the semi-purified synthesis gas to elemental sulphur to obtain the purified synthesis gas.
    • 本发明提供了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还包括硫化氢,硫化羰和/或氰化氢和任选的氨,该方法包括以下步骤:( a)在水和/或蒸汽存在下,将转化反应器中的原料合成气流与水煤气变换催化剂接触,使至少一部分一氧化碳与二氧化碳和氢气以及至少部分氰化氢反应至 氨和/或至少部分羰基硫化物转化成硫化氢,以获得富含H 2 S和CO 2并任选地包含氨的转移的合成气流; (b)通过使经移动的合成气流与吸收液体接触从移动的合成气流中除去H 2 S和CO 2,以获得富含H 2 S和CO 2的半纯化合成气和吸收液; (c)在加热器中加热至少部分富含H 2 S和CO 2的吸收液体,以获得富含H 2 S和CO 2的加热吸收液; (d)在闪蒸容器中对富含H 2 S和CO 2的加热吸收液进行减压,从而获得富含CO 2的闪蒸气体并吸收富含H 2 S的液体; (e)在升高的温度下将富含H 2 S的吸收液体与汽提气体接触,从而将H 2 S转移到汽提气体中以获得再生的吸收液体和汽提富含H 2 S的气体; (f)将富含H 2 S的汽提气体中的H 2 S转化为元素硫; (g)通过将半纯化合成气中的H 2 S转化为元素硫来从半纯化合成气中除去H 2 S,得到纯化的合成气。