文献类型：期刊文献

英文题名：Influence of chemical properties on CH4 adsorption capacity of anthracite derived from southern Sichuan Basin, China

作者：Shan, Changan Zhang, Tingshan Liang, Xing Zhang, Zhao Zhu, Haihua Yang, Wei Zhang, Kun

第一作者：Shan, Changan

通信作者：Shan, Changan

机构：[1] School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, 710065, China; [2] Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral, Shandong University of Science and Technology, Qingdao, 266590, China; [3] Key Laboratory of Tectonics and Petroleum Resources [China University of Geosciences], Ministry of Education, Wuhan, 430074, China; [4] School of Geoscience and Technology, Southwest Petroleum University, Chengdu, 610500, China; [5] Exploration and Development Department, Zhejiang Oilfield Company, CNPC, Hangzhou, 310023, China; [6] School of Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [7] State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, 102249, China

第一机构：School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, 710065, China

通信机构：School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, 710065, China

年份：2018

卷号：89

起止页码：387-401

外文期刊名：Marine and Petroleum Geology

收录：EI(收录号：20174204282642);Scopus(收录号：2-s2.0-85031405365)

语种：英文

外文关键词：Carbon - Methane - Moisture - Principal component analysis - Adsorption - Atoms - Chemical properties - Coal deposits - Chemical analysis - Anthracite

摘要：This study aimed to determine the effects of high-rank coal chemical properties on CH4 adsorption capacity. A total of 24 core samples of anthracite from 11 coalbed methane wells in southern Sichuan Basin (China) were examined systemically using maceral analysis, proximate and ultimate analyses, total sulfur content test, and CH4 isotherm adsorption experiment. Results show that vitrinite group macerals are the most abundant maceral group, followed by inertinite and inorganic mineral matter of these coals. Vitrinite- and inertinite-rich coals have the similar average Langmuir volume under dry ash-free basis (VLdaf), and no positive or negative correlation was found between VLdaf and vitrinite and inertinite content. In addition, there is a weakly negative relationship between inorganic mineral matter and CH4 adsorption capacity. Effects of coal elements by ultimate analysis, such as C element and the atomic ratios of H/C, O/C and N/C, on CH4 adsorption capacity were studied. CH4 adsorption capacity has positive correlation with C element content, H/C atomic ratio and N/C atomic ratio, respectively, but negative with O/C atomic ratio. Effects of four proximate analysis parameters (moisture, ash, fixed carbon and volatile matter content) on CH4 adsorption capacity were also studied. Moisture, ash and volatile matter content negatively affect CH4 adsorption, respectively, and fixed carbon content has exactly the opposite effect. Principle component regression analyses for the set of elements and proximate analysis parameters show that C, O, ash and fixed carbon content are the important influence factors on CH4 adsorption capacity. ? 2017