Chemical Looping Combustion(CLC)is a low-cost carbon capture technology.It uses metal oxides as oxygen carrier to achieve'oxygen carrying and releasing'and changes the traditional air oxidation mode.The technology has developed rapidly for nearly 25 years,from basic research to the establishment and self-heating operation of MWth scale demonstration devices.The basic CLC theory has been verified,gradually moving towards industrial demonstration process.The work starts from the basic CLC principle,focusing on three aspects:oxygen carrier,reactor,and operational optimization control.The suitable oxygen carrier for industrial application and its large-scale production technologies are introduced.The pressure distribution characteristics of interconnected fluidized bed reactors and the design,construction,and operation of MWth scale CLC reactors in worldwide are summarized.Finally,regarding the optimization control of CLC operation,the factors and control methods that affect CO2 purity and carbon capture efficiency are elaborated,future development needs to address a series of issues such as the heat transfer mechanism in the chemical chain reaction process of activated oxygen carrier particles,the chemical reaction mechanism of oxygen carrier-fuel ash,the construction of accurate reaction kinetic modeling of the chemical chain reaction process of solid fuels,the further scaling up of the reactor and industrial demonstration,etc.,in order to provide a reference for the research of chemical chain combustion technology.
chemical looping combustionoxygen carrierreactoroperational optimization
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维普
