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    • 80. 发明授权
    • Catalytic composition for oxidation of hydrogen sulfide, and methods for preparation thereof
    • 用于硫化氢氧化的催化组合物及其制备方法
    • US07704911B2
    • 2010-04-27
    • US11271664
    • 2005-11-10
    • Masih Hosseini Jenab
    • Masih Hosseini Jenab
    • B01J31/00B01J27/24
    • B01J31/1805B01D53/52B01D53/8612B01D2251/90B01D2251/902B01J31/0202B01J31/2213B01J2231/70B01J2531/0252B01J2531/842C01B17/05Y02P20/152
    • The present invention provides a catalytic composition for use in an oxidation-reduction process for effecting the catalytic oxidation of hydrogen sulfide in gas strains comprising a water soluble iron compound, a mixture of two chelating agents, comprising Na2EDTA and Na4EDTA, and at least one stabilizer. Further the present invention provides a process for preparing the catalytic composition according to the invention, said composition being advantageous in effecting the catalytic oxidation of hydrogen sulfide in gas strains, comprising the steps of preparing a mixture of a water soluble iron compound and a stabilizing agent in an aqueous system, while the pH of the system is pH ≦2, adding a mixture of two chelating agents I and II, whereas both of the chelating agents are amine chelating agents to the mixture of the water soluble iron compound and a stabilizing agent, adding sufficient aqueous amine chelating agent II to this combined mixture to adjust a pH of 7 to 10, and heating this mixture of to get the desired concentration of chelated iron in the mixture. Therefore, the procedure of the present invention provides an alkaline aqueous chelated iron solution useful in oxidation-reduction processes for effecting the catalytic oxidation of hydrogen sulfide in gas strains and provides, as mentioned before, (1) no foaming and no sludge, (2) a minimum decomposition of the chelant during the reaction, (3) a homogeneous and very concentrated catalytic iron chelate reagent with a possible iron concentration of >40 wt % and (4) a minimum rate of absorption of CO2 into the solution and maximum rate of stripping of CO2 by air bubbling.
    • 本发明提供一种用于氧化还原方法的催化组合物,用于在包含水溶性铁化合物,包含Na 2 EDTA和Na 4 EDTA的两种螯合剂的混合物的气体溶液中进行硫化氢的催化氧化,以及至少一种稳定剂 。 此外,本发明提供了制备根据本发明的催化组合物的方法,所述组合物有利于在气体应变中进行硫化氢的催化氧化,包括以下步骤:制备水溶性铁化合物和稳定剂的混合物 在水性体系中,同时系统的pH值为pH 40wt%,(4)溶液中CO2的最小吸收速率和最大速率 通过空气鼓泡来汽提二氧化碳。