1Construction of clean and efficient utilization direction of coal under the background of Double CarbonWANG Xiaolei, CHEN Guifeng, LI Wenbo, HUANG Peng, WANG Naiji1-52Properties and classification of coking coal and its application in coal petrologyBAI Xiangfei6-123Research on exploration and development layout of shale gas with policy support in China' s Yangtze River Economic BeltFU Cong, DING Hu, CHEN Wenmin13-214Present situation analysis and development thinking of coal inspection technologyCAI Zhidan, ZHANG Yonggang, WANG Libin, TU Hua, ZHAO Qi22-285Study on the apparent viscosity change law of oil-coal slurry prepared by deep catalytic cracking heavy oilWANG Guangyao, LI Yang, ZHAO Yuan, LI Peilin29-356Conversion behavior of nitrogenous compounds in hydroliquefaction of Baishihu coalLIU Min, CHEN Guifeng, ZHAO Peng, ZHAO Tianbo, SHI Quan, WANG Jikun36-437Application of gasification residue based activated carbon in coal chemical waste water treatmentXIE Wei, LU Xiaodong, MA Rongfu, WU Qian, WU Tao44-498Research progress of treatment technology of coal tar residue from fixed-bed gasification and pyrolysisZHAO Peng, HANG Zhijun, CHANG Qiulian50-559Research progress on distribution, modes of occurrence and removability of harmful trace elements in China coalsWANG Yue, SUN Nanxiang56-6110Research on the distribution of coking coal resources and coal quality characteristics in Yunnan provinceCHEN Ju, ZHANG Ningning, FAN Qingkui, WANG Dongsheng, LIANG Feng, LI Yang62-69,8311Research on the development of offshore wind power in China and suggestions for parity developmentJIANG Haibo, LIU Changdong70-7612Current status and prospect of waste heat utilization technologies of return air in coal minesXIANG Yanlei, YANG Yun, YAN Wenrui, YIN Weifeng77-8313Reaction kinetics and thermodynamics during pyrolysis of camellia oleifera shellZHOU Yuanfang, OUYANG Shaobo, XIONG Daoling, ZHANG Caixia, XUE Ruping, WANG Jun84-92