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    • 1. 发明授权
    • Process for removal of hydrogen sulfide
    • 硫化氢除去方法
    • US5391278A
    • 1995-02-21
    • US184679
    • 1994-01-21
    • Kosaku HonnaHiroshi NoguchiHiroshi IidaMasayuki Goto
    • Kosaku HonnaHiroshi NoguchiHiroshi IidaMasayuki Goto
    • B01D53/14B01D53/52C01B17/05C01B17/02
    • C01B17/05B01D53/1425B01D53/52Y02P20/132
    • A process for removal of hydrogen sulfide is here provided by which sulfur and hydrogen can be efficiently recovered from a hydrogen sulfide-containing gas and secondarily produced sulfuric acid can be properly treated, whereby a long-term continuous operation is possible in a closed system.The invention is mainly directed to a process which comprises the steps of bringing a hydrogen sulfide-containing gas into contact with an aqueous iron salt (Fe.sup.3+) solution to carry out oxidation reaction and to thereby produce a solution containing Fe.sup.2+, sulfur and secondarily produced sulfuric acid in a hydrogen sulfide gas absorption-oxidation step, separating sulfur from the solution, electrochemically treating the solution to regenerate the aqueous iron salt (Fe.sup.3+) solution, bringing a part of the solution from which sulfur has been separated into contact with hydrogen to reduce secondarily produced sulfuric acid contained in the solution and to thereby produce hydrogen sulfide, and then returning the thus produced hydrogen sulfide to the hydrogen sulfide gas absorption-oxidation step.
    • 这里提供了一种除去硫化氢的方法,通过该方法可以从含硫化氢的气体中有效地回收硫和氢,并且二次生产的硫酸可以被适当地处理,从而在封闭系统中可以进行长期的连续操作。 本发明主要涉及一种方法,其包括使含硫化氢的气体与铁盐水(Fe3 +)水溶液接触以进行氧化反应,从而产生含有Fe2 +,硫和次要生成的硫酸的溶液 在硫化氢气体吸收 - 氧化步骤中,从溶液中分离出硫,电化学处理溶液以再生含铁水溶液(Fe3 +)溶液,使一部分硫被分离成与氢接触的溶液减少 二次生成溶液中所含的硫酸,从而产生硫化氢,然后将由此产生的硫化氢返回至硫化氢气体吸收 - 氧化步骤。