Chemical absorption using amine solution takes the dominant position for post combustion CO2 capture of coal-fired power plants

the regeneration of amine is thermally driven

consuming large amount of steam extracted from turbine units

which results in severe power generation efficiency penalty and higher power generation cost.This limitation restricts its large-scale application in terms of both single-unit capacity and project quantity.Optimizing the heat application method in the system is an important approach to address the aforementioned issues.Focusing on the thermal energy integration utilization between the carbon capture subsystem and the power plant system

discussions and investigations are performed from the perspectives of thermal integration optimization theory and engineering energy system optimization. In terms of thermal integration optimization theory

the principles

usage methods

application results and the limitations of the exergy analysis and the pinch point analysis method in coal-fired carbon capture systems are discussed

and the suggested research interests are proposed. In the aspect of engineering energy system optimization

the beneficial effects of steam extraction parameters optimization

superheated steam utilization methods

condensate waste heat utilization methods

carbon capture and compression waste heat utilization methods

and various auxiliary machine application methods are analyzed

as well as the feasibility and economic problem of the mentioned methods during implementations. The research can provide references and ideas for further reducing system energy consumption of carbon capture of coal-fired power plants.