基于太阳能集热技术的火电厂CO2捕捉系统能耗特性分析 Energy Consumption Analysis of Coal-Fired Power Plant with CO2 Capture System Based on Solar Energy

Abstract

针对火电厂CO2减排的高能耗与高成本问题，本文通过对太阳能集热系统、胺基CO2捕集系统与火电机组热力系统的耦合机理研究及其系统的集成优化，应用等效焓降法，模拟分析了太阳能供能条件下，拥有胺基CO2捕集系统的600 MW燃煤机组在THA、75%THA、50%THA工况下不同碳捕捉率时的热经济性变化情况，得出了不同碳捕捉率下机组运行热经济性的变化趋势，结果表明，机组运行热经济性的相对提高程度随碳捕捉率的增加而增大，在此基础上，进行了系统集成方案的优化设计，以期为实现低能耗、低成本的CO2减排提供借鉴。According to the high energy consumption and cost of CO2 emission reduction in thermal power plant, by the coupling mechanism study and integrated optimization of solar energy collection system, amidogen CO2 emission reduction system and coal-fired power plant thermal system, it is simulated and analyzed that the change of thermal economy of 600 MW Coal-fired units CO2 capture system with amino in the condition of THA、75%THA、50%THA, which has various carbon capture rate, by using equivalent heat drop method, when solar supply energy to the system. And the trend of change on unit operation thermal economy is obtained in different carbon capture rate. It is shown that the relative increase of unit operation thermal economy increases with the carbon capture rate. To the conclusion, Optimization Design of System integrationist is carried out, and reference for achieving low energy consumption and cost of CO2 emission reduction is supplied.