Abstract The conventional method for gas sweetening is the conversion of hydrogen sulfide to solid sulfur. Although this method has some advantages, researchers are trying to come up with more beneficial technologies. In light of this requirement, a modified experimental method based on the method previously proposed by Yermakova and Mashkina in 2004 is used in the current study. The main idea of this method is modified as the novelty of this investigation which is utilization of mixture of H2S, propane and butane, as a sour gas instead of pure hydrogen sulfide. Modified mathematical approach based on the model previously proposed by Yermakova and Mashkina in 2004 is used to convert the hydrogen sulfide to methyl mercaptane. In this way, in the first stage of this study, experimental investigation is performed to investigate the possible effect of three different parameters of molar ratio, mass flow rate and inlet temperature. After that the obtained results are utilized to mathematically model the proposed sweetening method. The overall results demonstrated that although application of H2S mixtures leads to lower conversion rate of H2S to methyl mercaptane due to lower partial pressure of H2S regarding the presence of impurities of propane and butane, the catalytic conversion of H2S to valuable chemicals can be an applicable and feasible tool for industrial purposes.

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研究硫化氢催化转化为甲硫醇作为一种新的气体脱硫方法：实验和建模方法

摘要 气体脱硫的常规方法是将硫化氢转化为固体硫。虽然这种方法有一些优势，但研究人员正在努力想出更多有益的技术。鉴于此要求，本研究采用了基于 Yermakova 和 Mashkina 先前在 2004 年提出的方法的改进实验方法。该方法的主要思想被修改为该研究的新颖性，即利用 H2S、丙烷和丁烷的混合物作为酸性气体而不是纯硫化氢。使用基于 Yermakova 和 Mashkina 于 2004 年先前提出的模型的改进数学方法将硫化氢转化为甲基硫醇。这样，在本研究的第一阶段，进行实验研究以研究摩尔比、质量流量和入口温度这三个不同参数的可能影响。之后，利用获得的结果对所提出的增甜方法进行数学建模。总体结果表明，尽管由于丙烷和丁烷杂质的存在，H2S 的分压较低，H2S 混合物的应用导致 H2S 转化为甲硫烷的转化率较低，但 H2S 催化转化为有价值的化学品可能是一种适用的和工业用途的可行工具。