High-efficiency power generation system with integrated supercritical water gasification of coal

被引：32
作者：
Chen, Zhewen [1 ,2 ,3 ]
Gao, Lin [2 ,3 ]
Zhang, Xiaosong [4 ]
Han, Wei [2 ,3 ]
Li, Sheng [2 ,3 ]
机构：
[1] North China Elect Power Univ, Beijing Key Lab Multiphase Flow & Heat Transfer, Beijing I02206, Peoples R China
[2] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100190, Peoples R China
[4] Hainan Univ, Haikou, Hainan, Peoples R China
来源：
ENERGY | 2018年 / 159卷
关键词：
Supercritical water gasification; Energy balance; System integration; HYDROGEN-PRODUCTION; PREDICTION; EQUILIBRIA; OXIDATION; LIGNITE; HEAT;
D O I：
10.1016/j.energy.2018.06.140
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A novel power generation system with integrated supercritical water gasification (SCWG) of coal is proposed in this article. The gasification product directly enters the supercritical turbine to generate electricity. After pressure relief, the syngas separated from the unreacted water is transferred to the combined cycle. The influences of coal-water-slurry concentration (CWSC) and the outlet pressure (P-h) of the supercritical turbine on the system performances are studied. The results show that the thermal efficiency increases with increasing CWSC or decreasing P-h. The ultimate thermal efficiency of the system can be obtained when the CWSC is 25 wt% and P-h is 1 bar, which can approach 54.68%. The thermal efficiency of the novel system is higher than that of the power generation system with integrated SCWG of coal and parallel chemical heat recovery. (C) 2018 Elsevier Ltd. Ail rights reserved.
引用
收藏
页码：810 / 816
页数：7
相关论文
共 22 条
[1]   A process for generating power from the oxidation of coal in supercritical water [J].
Bermejo, MD ;
Cocero, MJ ;
Fernández-Polanco, F .
FUEL, 2004, 83 (02) :195-204
[2]  
Breeze, 2014, POWER GENERATION TEC
[3]  
Brioia S, 2007, SUPERCRITICAL WATER
[4]   System analysis of pulping process coupled with supercritical water gasification of black liquor for combined hydrogen, heat and power production [J].
Cao, Changqing ;
Guo, Liejin ;
Jin, Hui ;
Cao, Wen ;
Jia, Yi ;
Yao, Xiangdong .
ENERGY, 2017, 132 :238-247
[5]   Novel power generation models integrated supercritical water gasification of coal and parallel partial chemical heat recovery [J].
Chen, Zhewen ;
Zhang, Xiaosong ;
Li, Sheng ;
Gao, Lin .
ENERGY, 2017, 134 :933-942
[6]   Thermal analysis of supercritical water gasification of coal for power generation with partial heat recovery [J].
Chen, Zhewen ;
Zhang, Xiaosong ;
Gao, Lin ;
Li, Sheng .
APPLIED THERMAL ENGINEERING, 2017, 111 :1287-1295
[7]  
DAHL S, 1992, J SUPERCRIT FLUID, V5, P42, DOI 10.1016/0896-8446(92)90040-Q
[8]   Hydrogen production by non-catalytic partial oxidation of coal in supercritical water: Explore the way to complete gasification of lignite and bituminous coal [J].
Ge, Zhiwei ;
Guo, Simao ;
Guo, Liejin ;
Cao, Changqing ;
Su, Xiaohui ;
Jin, Hui .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2013, 38 (29) :12786-12794
[9]  
Gianfrancesco AD., 2017, MAT ULTRA SUPERCRITI
[10]   Supercritical water gasification research and development in China [J].
Guo, Liejin ;
Jin, Hui ;
Lu, Youjun .
JOURNAL OF SUPERCRITICAL FLUIDS, 2015, 96 :144-150
123