Coal Based Cogeneration System for Synthetic/Substitute Natural Gas and Power With CO2 Capture After Methanation: Coupling Between Chemical and Power Production
文献类型：期刊论文
| 作者 | Li, Sheng; Jin, Hongguang; Gao, Lin |
| 刊名 | JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 136期号:9 |
| 关键词 | CO2 capture and storage IGCC polygeneration/cogeneration SNG gasification modeling |
| 英文摘要 | Cogeneration of synthetic natural gas (SNG) and power from coal efficiently and CO2 capture with low energy penalty during coal utilization are very important technical paths to implement clean coal technologies in China. This paper integrates a novel coal based cogeneration system with CO2 capture after chemical synthesis to produce SNG and power, and presents the energetic and exergy analysis based on the thermodynamic formulas and the use of ASPEN PLUS 11.0. In the novel system, instead of separation from the gas before chemical synthesis traditionally, CO2 will be removed from the unconverted gas after synthesis, whose concentration can reach as high as 55% before separation and is much higher than 30% in traditional SNG production system. And by moderate recycle instead of full recycle of chemical unconverted gas back into SNG synthesis, the sharp increase in energy consumption for SNG synthesis with conversion ratios will be avoided, and by using part of the chemical unconverted gas, power is cogenerated efficiently. Thermodynamic analysis shows that the benefit from both systematic integration and high CO2 concentration makes the system have good efficiency and low energy penalty for CO2 capture. The overall efficiency of the system ranges from 53%-62% at different recycle ratios. Compared to traditional single product systems (IGCC with CO2 capture for power, traditional SNG system for SNG production), the energy saving ratio (ESR) of the novel system is 16%-21%. And compared to IGCC and traditional SNG system, the energy saving benefit from cogeneration can even offset the energy consumption for CO2 separation, and thus zero energy/efficiency penalties for CO2 capture can be realized through system integration when the chemicals to power output ratio (CPOR) varies in the range of 1.0-4.6. Sensitivity analysis hints that an optimized recycle ratio of the unconverted gas and CPOR can maximize system performance (The optimized Ru for ESR maximum is around 9, 4.2, and 4.0, and the corresponding CPOR is around 4.25, 3.89, and 3.84, at tau-4.94, 5.28 and 5.61), and minimize the efficiency penalty for CO2 capture (The optimized R-u for minimization of CO2 capture energy penalty is around 6.37 and the corresponding CPOR is around 3.97 at s 4.94, epsilon 16.5). The polygeneration plant with CO2 capture after chemical synthesis has a good thermodynamic and environmental performance and may be an option for clean coal technologies and CO2 emission abatement. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Mechanical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | POLYGENERATION SYSTEM ; WOOD GASIFICATION ; SNG PRODUCTION ; EFFICIENCY ; BIOMASS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000340777400004 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/106068]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | Chinese Acad Sci, Inst Engn Thermophys, Lab Integrated Energy Syst & Renewable Energy, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Sheng,Jin, Hongguang,Gao, Lin. Coal Based Cogeneration System for Synthetic/Substitute Natural Gas and Power With CO2 Capture After Methanation: Coupling Between Chemical and Power Production[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME,2014,136(9). |
| APA | Li, Sheng,Jin, Hongguang,&Gao, Lin.(2014).Coal Based Cogeneration System for Synthetic/Substitute Natural Gas and Power With CO2 Capture After Methanation: Coupling Between Chemical and Power Production.JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME,136(9). |
| MLA | Li, Sheng,et al."Coal Based Cogeneration System for Synthetic/Substitute Natural Gas and Power With CO2 Capture After Methanation: Coupling Between Chemical and Power Production".JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME 136.9(2014). |
入库方式： OAI收割
来源：工程热物理研究所
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