摘要：Based on the compositional properties of the syngas produced by supercritical water gasification (SCWG) of coal, a CO2 near-zero-emission power generation system with integrated supercritical water gasification of coal and solid oxide fuel cell (SOFC) is proposed. The chemical energy of the syngas is cascade utilized by the SOFC and gas turbine to generate electricity. The exhaust gas from the anode of SOFC is combusted with pure oxygen in the combustor of the gas turbine to produce high-temperature flue gas which is consisted of CO2 and H2O. The CO2 can be easily separated and captured from the flue gas. The heat for preheating the feed water of the gasifier and driving the gasification reactions is provided by the exhausts of the combustor, SOFC cathode, and the exothermic heat produced through electrochemical reaction in the SOFC. The influences of key parameters such as the temperature of the SOFC and fuel utilization rate on the system performance are investigated, and the distribution law and transfer conversion mechanism of the energy and exergy are revealed. When the temperature of the SOFC is 1000 掳C, and the fuel utilization rate is 83 %, the power efficiency of the system is 43.65 % and the exergy efficiency is 42.61 %. In addition, the CO2 capture rate is close to 100 %. Economic analysis is also performed. The levelized cost of electricity (LCOE) of the proposed power system is 0.272楼/kWh. CO2 near-zero-emission is realized through combining the electrochemical reaction within the SOFC and the oxy-combustion in the combustor of the gas turbine, which is of great significance to achieve the carbon peak and carbon neutrality goals. 漏 2024 Elsevier Ltd

ISSN号：0360-5442

卷、期、页：卷301

发表日期：2024-08-15

影响因子：9.000000

期刊分区（SCI为中科院分区）：一区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：Energy

参与作者：张浩,范峻铭

通讯作者：魏俊杰

第一作者：陈哲文,张玉明,张炜,李家州

论文类型：期刊论文

论文概要：魏俊杰,陈哲文,张浩,范峻铭,张玉明,张炜,李家州，Energy, exergy and economic(3E) analyses of a CO2 near-zero-emission power generation system with integrated supercritical water gasification of coal and SOFC，Energy，2024，卷301

论文题目：Energy, exergy and economic(3E) analyses of a CO2 near-zero-emission power generation system with integrated supercritical water gasification of coal and SOFC