| 薛景战.煤矿瓦斯中H2S气体的吸附特性及其对治理的影响[J].地质与勘探,2017,53(3):609-614 |
| 煤矿瓦斯中H2S气体的吸附特性及其对治理的影响 |
| Adsorption characteristics of H2S in coal mine gas and their effect on H2S control in coal mines |
| 投稿时间：2016-11-16 修订日期：2016-12-23 |
| DOI：10.12134/j.dzykt.2017.03.022 |
| 中文关键词: 煤矿瓦斯 H2S 吸附解吸 治理 新疆 山西 |
| 英文关键词: 国家自然科学基金项目“煤矿瓦斯中H2S异常区的形成机制研究”（批准号：41272177）资助 |
| 基金项目:国家自然科学基金项目“煤矿瓦斯中H2S异常区的形成机制研究”（批准号：41272177）资助 |
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| 中文摘要: |
| 基于新疆和山西气煤及瘦煤对H2S、CH4和N2的平衡水条件下的等温吸附实验及Langmuir模型和D-A模型对实验数据的模拟结果，来研究煤矿瓦斯中H2S气体的吸附特性及其影响因素，并探讨其与H2S异常矿井的治理关系。结果显示：不同于CH4和N2在煤中主要以微孔吸附为主（90%以上），煤中H2S气体的微孔吸附量仅占Langmuir最大吸附量的36.26%~57.21%，平均为45.99%；气体分子本身的性质是影响煤中H2S吸附的主要因素，尤其分子直径是影响H2S气体V0/VL远小于CH4和N2的这种现象的主要原因，也是造成微孔中H2S气体难以解吸的主要原因；基于H2S气体在煤中吸附解吸特征，提出应从H2S气体分子本身入手，结合矿井煤层地质条件来治理煤矿中的硫化氢。 |
| 英文摘要: |
| This study was based on isotherms experiments on adsorption of H2S, Ch4 and N2 under a balanced water condition for gas coal and lean coal in Xinjiang and Shanxi and simulations on the Langmuir and D-A models. The purpose was to reveal adsorption characteristics of H2S in mine gas and their influence factors as well as the relationship with H2S in coal mines. The results show that different from CH4 and N2 adsorption characteristics which are dominated by microporous adsorption，H2S micro-pore adsorption quantity accounts for 36.26%~57.21% of the maximum Langmuir amount (VL)，with 45.99% on average. H2S adsorption was controlled by molecular properties to a large extent，particularly molecular diameter decides that the micropore adsorption rate（V0/VL）of H2S is much less than that of CH4 and N2. Based on the adsorption characteristics of H2S in micro-pores，this study suggested that H2S control in coal mines should start from H2S molecular itself and combine with geological conditions of coal seams. |
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