A critical review on direct catalytic hydrogasification of coal into CH_(4):catalysis process configurations,evaluations,and prospects  

作　　者：Shuai Yan Jun Feng Shenfu Yuan Zihong Xia Fengshuang Han Xuan Qu Jicheng Bi 

机构地区：[1]School of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo,315211,Zhejiang,China [2]Zhejiang Institute of Tianjin University,Ningbo,315201,Zhejiang,China [3]State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan,030001,China [4]School of Chemical Science and Engineering,Key Laboratory of Medicinal Chemistry for Natural Resource,Ministry of Education,National Center for Experimental Chemistry and Chemical Engineering Education Demonstration,Yunnan Provincial Key Laboratory of Carbon Neutral and Green Low-Carbon Technology,Yunnan University,Kunming,650091,China [5]Department of Energy and Chemical Engineering,East China University of Science and Technology,Shanghai,200237,China

出　　处：《International Journal of Coal Science & Technology》2024年第3期51-85,共35页国际煤炭科学技术学报（英文）

基　　金：National Natural Science Foundation of China(22308170);A Project Supported by Scientific Research Fund of Zhejiang Provincial Education Department(Y202250270);Key research and development project of Shanxi Province(202102090301029);Scientific Research Incubation Program of Ningbo University of Technology(2022TS12);Scientific Research Project Funded by Ningbo University of Technology(2022KQ04).

摘　　要：Coal catalytic hydrogasification(CCHG)is a straightforward approach for producing CH_(4),which shows advantages over the mature coal-to-CH_(4) technologies from the perspectives of CH_(4) yield,thermal efficiency,and CO_(2) emission.The core of CCHG is to make carbon in coal convert into CH_(4) efficiently with a catalyst.In the past decades,intensive research has been devoted to catalytic hydrogasification of model carbon(pitch coke,activated carbon,coal char).However,the chemical process of CCHG is still not well understood because the coal structure is more complicated,and CCHG is a combination of coal catalytic hydropyrolysis and coal char catalytic hydrogasification.This review seeks to shed light on the catalytic process of raw coal during CCHG.The configuration of suitable catalysts,operating conditions,and feedstocks for tailoring CH_(4) formation were identified,and the underlying mechanisms were elucidated.Based on these results,the CCHG process was evaluated,emphasizing pollutant emissions,energy efficiency,and reactor design.Furthermore,the opportunities and strategic approaches for CCHG under the restraint of carbon neutrality were highlighted by considering the penetration of“green”H2,biomass,and CO_(2) into CCHG.Preliminary investigations from our laboratories demonstrated that the integrated CCHG and biomass/CO_(2) hydrogenation process could perform as an emerging pathway for boosting CH_(4) production by consuming fewer fossil fuels,fulfilling the context of green manufacturing.This work not only provides systematic knowledge of CCHG but also helps to guide the efficient hydrogenation of other carbonaceous resources such as biomass,CO_(2),and coal-derived wastes.

关 键 词：Coal gasification Catalytic hydrogasification Methane Pressurized fluidized bed 

分 类 号：O64[理学—物理化学]