摘要：Based on the hydrogen-rich characteristic of the syngas produced through supercritical water gasification of coal, a power system with integrated supercritical water gasification of coal with solid oxide fuel cell (SOFC) and gas turbine is proposed. The high-temperature and high-pressure sensible enthalpy of the gasification products is recovered by an expander, and the chemical energy is successively utilized by the SOFC and gas turbine for power generation. The sensible heat of the exhaust flue gas at the outlet of the gas turbine and the air at the outlet of the SOFC cathode is mostly used for preheating the feed water of the boiler. Under the conditions of gasification temperature and pressure of 660℃/250 bar and coal-water-slurry concentration (CWSC) of 11.3% (mass) in the gasifier, the power generation efficiency of the system can reach 54.01%, and the exergy efficiency is 52.79%. Compared with the most advanced 1000 MW ultra-supercritical steam Rankine cycle coal-fired power station, the new system proposed in this article can achieve an annual CO2 emission reduction of 390000 t. The coal based power generation system proposed in this article further deepens the cascade utilization of coal chemical energy, and achieves efficient matching of the energy levels between various subunits, which will help to achieve the carbon peaking and carbon neutrality goal. ? 2023 Chemical Industry Press. All rights reserved.

ISSN号：0438-1157

卷、期、页：卷74期9：3888-3902

发表日期：2023-09-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：Huagong Xuebao/CIESC Journal

通讯作者：魏俊杰

第一作者：陈哲文,张玉明

论文类型：期刊论文

论文概要：陈哲文,魏俊杰,张玉明，System integration and energy conversion mechanism of the power technology with integrated supercritical water gasification of coal and SOFC，Huagong Xuebao/CIESC Journal，2023，卷74期9：3888-3902

论文题目：System integration and energy conversion mechanism of the power technology with integrated supercritical water gasification of coal and SOFC