基于㶲方法的CO2捕集系统的热经济性评价

针对CO₂捕集系统, 提出了体现能量的质的评价指标——耗率.解吸耗率是解吸过程的过程性评价指标, 直接反映了解吸过程工艺和设备能耗水平.抽汽耗率是CO2捕集系统的综合性评价指标, 能合理全面地评价捕集系统蒸汽能量利用的程度.引入的减温效率衡量了抽汽在减温过程中可用能的有效利用程度.

Thermo-economical Evaluation for the CO2 Capture System of a Power Plant Based on Exergy Method

In this paper, specific exergy consumption was put forward to evaluate the thermo-economy for the CO₂ capture system of a power plant. Firstly, specific exergy consumption of the regeneration can directly reflect the energy consumption level of the technology and equipments of the regeneration process of CO₂ capture system. Secondly, specific exergy consumption of the extracted steam, which is a comprehensive evaluating parameter, can reasonably and comprehensively assess the degree of perfection of steam energy utilization process of the CO₂ capture system. Finally, exergy efficiency is introduced to evaluate the effective degree of the available energy utilization during the temperature reduction process of the extracted steam.