Application of chemical looping air separation for MILD oxy-combustion in the supercritical power plant with CO2 capture

被引:7
作者
Chen, Shiyi [1 ]
Hu, Jun [1 ]
Sun, Zhao [1 ]
Xiang, Wenguo [1 ]
机构
[1] Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China
来源
ENERGY SCIENCE & ENGINEERING | 2018年 / 6卷 / 05期
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
chemical looping air separation; CO2; capture; MILD oxy-combustion; supercritical power plant; PULVERIZED-COAL; FLAMELESS COMBUSTION; TEMPERATURE AIR; CARBON STRIPPER; SCALE FURNACE; NATURAL-GAS; FUEL; CARRIER; CU; RECIRCULATION;
D O I
10.1002/ese3.224
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Chemical looping air separation (CLAS) is a novel and promising technology for oxygen production. This paper presents the application of CLAS to the supercritical power plant for MILD oxy-combustion. Compared with the reference conventional supercritical power plant, the power generation efficiency of the CLAS integrated MILD oxy-combustion plant is only reduced by about similar to 1.37% points at the baseline case. CO2 compression process imposes additional similar to 3.97% points efficiency penalty, which is inevitable to all of the CO2 capture technologies. The net power efficiency of the CLAS integrated MILD oxy-combustion plant is similar to 37.37%. Even though a higher reduction reactor temperature could boost the power efficiency and a higher oxidization reactor temperature reversely decreases the power efficiency, the influence of reactor temperature is marginal. The performance of CLAS integrated MILD oxy-combustion plant is not sensitive to excess CO2 and O-2 ratio. Different oxygen carriers have different suitable operating region, but possess similar power efficiency. The carbon capture rate of the CLAS integrated MILD oxy-combustion plant is up to similar to 100%, resulting in a virtually carbon-free fossil power plant.
引用
收藏
页码:490 / 505
页数:16
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