CO adsorption-diffusion model in coal seams

摘要：

Through the adsorption experiment for CO at different temperatures and different pressures, we get a result showing that, at a normal temperature, adsorption isotherms of CO in coal seams is part of class I adsorption isotherm. The CO adsorption quantity can be calculated by the Langmuir equation. Diffusion mode of gas in coal seam is determined by the index Kn, which determines the magnitude of coal hole diameter and average free moving distance of molecules. According to the calculation value of Kn, it is confirmed that diffusion modes of CO in coal seams are mainly Knudsen style and transition type diffusion. The samples of coal are mainly in the bituminous coal of low metamorphic grade, and the coal hole structure is mainly pore and transition hole. Therefore, in the coal seams, the proliferation transition model of proliferation of CO is mainly the Knudsen proliferation.

关键词： Langmuir equation monomolecule layer adsorption model Kn diffusion model CO

作者: Xiao Cang-yan Guo Li-wen Chen Shu-zhao

作者单位: College of Light Industry, Hebei Polytechnic University, Tangshan 063020, China College of Resource and Environment, Hebei Polytechnic University, Tangshan 063009, China School of Mining Engineering, China University of Mining & Technology, Xuzhou 221008, China

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-5

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）