为了研究不同煤级煤对H2S气体的吸附差异及吸附模型，采集新疆气煤，山西潞安瘦煤、晋城无烟煤3个煤样进行了工业分析、煤岩分析和平衡水条件下的等温吸附实验。采用Langmuir，BET， D-R和D-A吸附模型，利用拟合软件对等温吸附实验数据进行了非线性回归拟合，并检验拟合程度。结果表明：煤对 H2S 的吸附量随着煤化程度的加深而增加，为第Ⅰ类等温吸附线；其中 Langmuir模型的拟合效果最好，n=1的D-A模型的拟合效果次之，BET模型的拟合效果较差，模型对实验数据的拟合效果与吸附模型中参数个数无明显关系；煤吸附H2S可用单分子层吸附理论来解释。%In order to research H2S adsorption and adsorption model in different ranks coal, the proximate analysis, petrography analysis and isotherms adsorption experiment were conducted respectively on Xinjiang gas coal, Lu'an lean coal and Jincheng anthracite. Langmuir, BET, D-R and D-A models were adopted, fitting software was used to conduct nonlinear regression fitting of data of isothermal adsorption experiment and examine the fitting degree. The results showed that H2S adsorption increased with coal rank, and was of sorption isotherm type I. The fitting results of Langmuir model were the best, followed by D-A model, BET model was poor. The fitting degree had nothing to do with the number of parameters. The theory of monolayer adsorption can be used to explain H2S adsorption in coal.
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