摘要
化学链燃烧技术凭借其零能耗碳捕集和余热梯级利用特性可实现化石燃料的清洁高效发电.文中针对化学链燃烧发电系统,提出了一种空气反应器入口分流加热配置,以避免余热回收导致的布局复杂性.使用ASPEN和MATLAB对所提系统进行了热力学建模、参数优化分析和性能对比.结果表明,存在最佳的分流比和反应器运行压力,使系统设计性能达到最优.空气反应器运行温度的升高虽会降低冷却空气的流量,但会通过提升燃料反应器运行温度来增大燃气涡轮膨胀功.所提系统的最优发电效率和㶲效率分别为52.93%和48.97%,高于参照系统的热力学性能.
Chemical-looping-combustion technology enables clean and efficient power generation from fossil fuels by virtue of its zero-energy carbon capture and waste heat cascade utilization.In this paper,an air reactor inlet split-heating configuration for the chemical looping combustion power generation system was proposed to avoid layout complexity due to waste heat recovery.Thermodynamic modelling,parameter optimization analysis and performance comparison of the proposed system were carried out using ASPEN and MATLAB.The results show that there exist an optimum split ratio and an optimum reactor operating pressure to optimize the system design performance.The increase in air reactor operating temperature reduces the flow rate of air with cooling effect,but increases the gas turbine expansion work by increasing the fuel reactor operating temperature.The optimal power generation efficiency and the exergy efficiency of the proposed system are 52.93%and 48.97%respectively,which are higher than the thermodynamic performance of the reference system.
作者
杜亚东
王海媚
张涵之
DU Yadong;WANG Haimei;ZHANG Hanzhi(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《北京理工大学学报》
北大核心
2025年第12期1259-1265,共7页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(52276028)。
关键词
热能工程
化学链燃烧
热力学分析
参数优化
性能对比
thermal engineering
chemical looping combustion
thermodynamic analysis
parameter optimization
performance comparison
