煤矿安全2019，Vol.50Issue(7)：37-41,5.DOI:10.13347/j.cnki.mkaq.2019.07.009
软硬煤二元气体竞争吸附差异性研究
Study on Difference of Binary Gas Competitive Adsorption of Soft and Hard Coal
摘要
Abstract
The physical properties of soft coal and hard coal in the same coal seam are different, which leads to the difference in gas adsorption behavior. Based on the laboratory test simulation method, this paper tested the difference of physical parameters of soft and hard coal, built a binary gas competitive adsorption experimental platform, and studied the competitive adsorption characteristics of CO2 and CH4 of soft and hard coal. The results show that the basic parameters of soft and hard coal are similar except f value, and the pore volume and pore surface area of soft coal are larger than that of hard coal. The adsorption capacity of soft coal is greater than that of hard coal, and the adsorption capacity of CO2 is greater than that of CH4. The adsorption capacity of coal for CO2 of a single component is the largest, and that for CH4 is the smallest. The total adsorption capacity of coal for CO2+CH4 is between the two. As the adsorption equilibrium pressure increases, the adsorption curve of coal on mixed gas will gradually move away from the adsorption curve of coal on CH4 of a single component, but increasingly close to the adsorption curve of CO2.关键词
软煤/二元气体/竞争吸附/物性参数/等温吸附Key words
soft coal/binary gas/competitive adsorption/physical parameter/isothermal adsorption分类
矿业与冶金引用本文复制引用
郭怀广..软硬煤二元气体竞争吸附差异性研究[J].煤矿安全,2019,50(7):37-41,5.基金项目
国家重点研发计划资助项目(2017YFC0804207) （2017YFC0804207）
中国煤炭科工集团科技创新基金资助项目(2018QN011) （2018QN011）
