热化学循环耦合化学链循环除氧的多能联产系统  

Multi-energy Co-generation System With Solar Thermochemical Cycle Basedon Chemical-looping Cycle Oxygen Removal

作　　者：陈靖 孔慧 郭永鹏 CHEN Jing;KONG Hui;GUO Yongpeng(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;State Key Laboratory of Power System Operation and Control,Department of Thermal Engineering,Tsinghua-BP Clean Energy Center,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]清华大学电力系统及大型发电设备安全控制和仿真国家重点实验室,北京100084

出　　处：《工程热物理学报》2025年第3期730-736,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.52006124);北京市自然科学基金(No.3232031);国家重点研发计划项目(No.2023YFE0113000);中国科协青年人才托举工程(No.2023QNRC001)。

摘　　要：随着对气候变化问题担忧的加剧,如何减少燃料生产过程中碳排放的问题亟待解决。本文提出了热化学循环耦合化学链循环除氧的多能联产系统,系统利用化学链循环吸收热化学循环产生的氧气以提高载氧体的还原程度,并通过冷热电联产系统,梯级利用化学链循环产生的高温热能,输出电能、冷能和低品位热能。计算结果显示,NiO/Ni较为适合用做化学链循环载氧体。当化学链循环压比为5,热化学循环还原温度为1500℃时,系统的太阳能利用效率和㶲效率分别达到28.5%和23.5%,还原温度升高至1600℃时,太阳能利用效率和㶲效率分别升高至32.2%和25.5%。利用多能联产系统供能能够节约57.4%的甲烷,从而减少二氧化碳排放。理论计算表明,假设完全依靠多能联产系统供能,满足北京和上海居民年生活能源消耗人均需要12.1 m^(2)和7.3 m^(2)的聚光面积。As concerns about climate change continue to grow,the conundrum of how to produce carbon-neutral fuel needs to be addressed.This paper proposes a multi-energy co-generation sys-tem with solar thermochemical cycle based on chemical-looping cycle oxygen removal,which uses chemical-looping cycle to absorb oxygen generated by thermochemical cycle to improve the reduc-tion degree of oxygencarrier Through the combined cooling,heating and power system,the high-temperature thermal energy generated by chemical-looping cycle is utilized in a cascade manner to output electricity,cold energy and low-grade thermal energy.The results show that NiO/Ni is more suitable as oxygencarrier in chemical-looping cycle.When the pressure ratio of chemical-looping cycle is 5 and the thermal chemical cycle reduction temperature is 1500℃,the solar utilization efficiency and exergy efficiency reached 28.5%and 23.5%respectively,and when the reduction temperature rose to 1600℃,these efficiencies rose to 32.2%and 25.5%respectively.The use of multi-energy co-generation system can save 57.4%of methane and reduce carbon emissions.Theoretical calculation shows that if the energy supply of the multi-energy cogeneration system is completely relied on,the annual energy consumption per capita of Beijing and Shanghai residents needs 12.1 m^(2) and 7.3 m^(2) of concentrating area.

关 键 词：热化学循环 能效提升 化学链循环 冷热电联产 

分 类 号：TK519[动力工程及工程热物理—热能工程]