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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CO_2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CO_2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。
Based on the principle of multi-energy complementary integrated cascade utilization, a new solar energy-methane complementary system (LEHSOLCC) for CO 2 control with low energy consumption is proposed in this paper, and its thermal and economic analysis is carried out. Palladium-based alloy films have high hydrogen permeation performance. When this structure is used in methane reforming reaction, nearly complete conversion of methane can be realized under medium temperature and the energy conversion is realized at the same time as the directional enrichment of CO2 and low energy Consumption separation. In the system mentioned above, the intermediate temperature solar energy (550 ℃) is firstly transformed into the chemical energy of synthesis gas through reforming reaction to achieve the grade improvement. Secondly, the high-temperature thermal power conversion is realized through the combustion of fuel into high-temperature gas heat driven gas-steam combined cycle . Analysis shows that: under rated conditions, the system power generation cost of 0.062 $ / kWh, payback period of 10 years. Compared with CC-Post, which captures CO2 with the same fossil fuel input and CO2 capture level, the power generation cost is reduced by 11.4%, fully demonstrating its performance advantages.