Catalytic coal gasification is a promising technology in the field of clean coal utilization.A comprehensive understanding of mechanisms,reaction kinetic,and reactor model is crucial.This article summarizes and analyz...Catalytic coal gasification is a promising technology in the field of clean coal utilization.A comprehensive understanding of mechanisms,reaction kinetic,and reactor model is crucial.This article summarizes and analyzes the catalytic mechanisms of key reactions,such as C-O_(2),C-CO_(2),C-H_(2)O,and CO-H_(2).It also compares various kinetic models,including shrinking core model,random pore model,volume model and their respective modifications.Additionally,the article delves into mathematical modellings of catalytic coal gasification,encompassing molecular models or density functional theory,empirical model,computational fuid dynamics,Aspen modeling,and artificial neural network.The aim is to provide a roadmap for the development and scale up of reactors used in catalytic coal gasification.展开更多
Catalytic coal gasification for methane production is a promising technology in the clean coal utilization field.In this review,the technologies for coal-derived natural gas production,the catalytic coal gasification ...Catalytic coal gasification for methane production is a promising technology in the clean coal utilization field.In this review,the technologies for coal-derived natural gas production,the catalytic coal gasification processes and the used reactors were compared.The compared catalysts mainly included single-component,composite,and disposable catalysts.The effects of catalyst properties included composition,preparation method,supporter and loading amount were further illustrated.The influences of coal properties included char preparation method,particle size,and ash content on catalytic performance were investigated.The effects of temperatures and pressures on gasification performance were discussed in details.The evaporation,melting,decomposition,and inactivation of catalyst under various temperatures and pressures were also analyzed.It is expected to provide comprehensive information on the researches of catalytic coal gasification for methane production.展开更多
基金This work was financially supported by Fundamental Research Program of Shanxi Province(20210302124357)State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology(SKL202103)+4 种基金Development Program of Shanxi Province(202102090301029)National Natural Science Foundation of China(22169017)Shanxi Provincial NSF(20210302124096)Scientific and Technological Innovation Programs of Higher Education Institution in Shanxi(2022L569)Science and Technology Plan Project in Lu Liang(2022SHFZ36).
文摘Catalytic coal gasification is a promising technology in the field of clean coal utilization.A comprehensive understanding of mechanisms,reaction kinetic,and reactor model is crucial.This article summarizes and analyzes the catalytic mechanisms of key reactions,such as C-O_(2),C-CO_(2),C-H_(2)O,and CO-H_(2).It also compares various kinetic models,including shrinking core model,random pore model,volume model and their respective modifications.Additionally,the article delves into mathematical modellings of catalytic coal gasification,encompassing molecular models or density functional theory,empirical model,computational fuid dynamics,Aspen modeling,and artificial neural network.The aim is to provide a roadmap for the development and scale up of reactors used in catalytic coal gasification.
基金financially supported by Shangrao Natural Science Foundation(No.2020L001)Natural Science Foundation of China(No.51976226)Science Foundation of North University of China(No.XJJ201923).
文摘Catalytic coal gasification for methane production is a promising technology in the clean coal utilization field.In this review,the technologies for coal-derived natural gas production,the catalytic coal gasification processes and the used reactors were compared.The compared catalysts mainly included single-component,composite,and disposable catalysts.The effects of catalyst properties included composition,preparation method,supporter and loading amount were further illustrated.The influences of coal properties included char preparation method,particle size,and ash content on catalytic performance were investigated.The effects of temperatures and pressures on gasification performance were discussed in details.The evaporation,melting,decomposition,and inactivation of catalyst under various temperatures and pressures were also analyzed.It is expected to provide comprehensive information on the researches of catalytic coal gasification for methane production.
