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Heat integration and optimization of direct-fired supercritical CO2 power cycle coupled to coal gasification process
Zhao, Yongming1,2,3; Yu, Bo2,4; Wang, Bo1,3; Zhang, Shijie1,3; Xiao, Yunhan1,3
2018-02-05
Source PublicationAPPLIED THERMAL ENGINEERING
ISSN1359-4311
Volume130Pages:1022-1032
AbstractSupercritical carbon dioxide (sCO(2)) power cycle is a promising power cycle that has drawn much attention in recent years. Among various layouts, the direct-fired sCO(2) power cycle achieves not only high efficiency but also near zero emission. Coal gasification and air separation process are indispensable processes when coal is used as fuel. To explore the best cycle performance, the above two processes have to be tightly integrated with the sCO(2) power cycle in both mass and energy. Key parameters that govern the heat integration should also be optimized to achieve better performance. A two-stage method is applied for simultaneous optimization and heat integration of a direct-fired sCO(2) power cycle coupled to coal gasification process. First, boundary parameters of the heat integration process are optimized. Then the heat exchanger network, which reveals viable heat integration scheme, is designed to fulfill the optimized target. The result shows that the net efficiency reaches 39.29% when heat integration of ASU is not considered. If heat integration of ASU is considered, the net efficiency increases to 40.97%, showing an efficiency increment of 1.68%. When the CO2 turbine pressure ratio is also optimized, the net efficiency increases further to 41.41%. (C) 2017 Published by Elsevier Ltd.
KeywordHeat Integration Parameter Optimization Supercritical Co2 Power Cycle Coal Gasification Zero Emission
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.applthermaleng.2017.11.069
Indexed BySCI
Language英语
WOS KeywordCARBON-DIOXIDE ; THERMODYNAMIC OPTIMIZATION ; PLANT STRUCTURE ; GENERATION ; COMPRESSION ; METHODOLOGY
WOS Research AreaThermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
Funding OrganizationMinistry of Science and Technology of the People's Republic of China(2016YFE0102400)
WOS IDWOS:000424177600089
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24046
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Res Ctr Energy & Power, Lianyungang 222047, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yongming,Yu, Bo,Wang, Bo,et al. Heat integration and optimization of direct-fired supercritical CO2 power cycle coupled to coal gasification process[J]. APPLIED THERMAL ENGINEERING,2018,130:1022-1032.
APA Zhao, Yongming,Yu, Bo,Wang, Bo,Zhang, Shijie,&Xiao, Yunhan.(2018).Heat integration and optimization of direct-fired supercritical CO2 power cycle coupled to coal gasification process.APPLIED THERMAL ENGINEERING,130,1022-1032.
MLA Zhao, Yongming,et al."Heat integration and optimization of direct-fired supercritical CO2 power cycle coupled to coal gasification process".APPLIED THERMAL ENGINEERING 130(2018):1022-1032.
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