基于多能源互补综合梯级利用的原则,本文提出了新型低能耗控制CO2的太阳能与甲烷互补系统(LEHSOLCC),并对其进行了热力经济性分析.钯基合金膜具有很高的透氢性能,将此结构用于甲烷重整反应中,在中温条件下可实现甲烷的近完全转化,并在能量转化的同时,实现CO2的定向富集与低能耗分离.所提系统中,中温太阳能(550℃)首先经重整反应转化为合成气化学能,实现品位提升,其次通过燃料燃烧转化为高温燃气热能驱动燃气-蒸汽联合循环作功实现其高效热功转换.分析表明:额定工况下,系统发电成本为0.062 ＄/kWh,回收期10年.与相同化石燃料输入及CO2捕集水平的尾气捕集CO2的燃气-蒸汽联合循环(CC-Post)相比,发电成本降低11.4％,充分显示其性能优势.
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