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CN102405090A 制备纯化合成气的方法 无效 - 撤回

制备纯化合成气的方法
摘要：
一种由原料合成气生产纯化合成气的方法，包括：(a)使原料合成气变换，以获得富含H2S和CO2的变换后合成气；(b)使变换后合成气与吸收液体接触，以获得半纯化合成气及富含H2S和CO2的吸收液体；(c)将富含H2S和CO2的吸收液体加热和降压，以获得富含CO2的闪蒸气和富含H2S的吸收液体；(d)汽提富含H2S的吸收液体，以获得再生的吸收液体和富含H2S的汽提气；(e)将汽提气中的H2S转化为元素硫；(f)使半纯化合成气与含水碱性洗涤液体接触，以获得贫含H2S的合成气和含硫化物的含水物流；(g)使含硫化物的含水物流与硫化物氧化细菌接触，以获得硫浆液和再生的含水碱性洗涤液体。
摘要（英）：

Process for producing a purified synthesis gas from a feed synthesis gas comprising: (a) shifting feed synthesis gas to obtain a shifted synthesis gas enriched in H2S and in CO2; (b) contacting shifted synthesis gas with absorbing liquid to obtain semi-purified synthesis gas and an absorbing liquid rich in H2S and CO2; (c) heating and de-pressurising the absorbing liquid rich in H2S and CO2, thereby obtaining flash gas rich in CO2 and absorbing liquid rich in H2S; (d) stripping the absorbing liquid rich in H2S to obtain regenerated absorbing liquid and stripping gas rich in H2S; (e) converting H2S in the stripping gas to elemental sulphur; (f) contacting the semi-purified synthesis gas with an aqueous alkaline washing liquid to obtain H2S-depleted synthesis gas and a sulphide-comprising aqueous stream; (g) contacting the sulphide-comprising aqueous stream with sulphide-oxidizing bacteria to obtain a sulphur slurry and a regenerated aqueous alkaline washing liquid.

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