Influence of Slurry Change with Syngas Synthesis Process and Energy analysis
碩士 === 國立臺灣科技大學 === 化學工程系 === 103 === In this study, we discuss two slurry systems, water and liquid carbon dioxide, in an Integrated Gasification Combined Cycle process. And the influence of slurry change on syngas production and energy analysis. Because the high heat capacity and high enthalpy of...
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ndltd-TW-103NTUS53420022016-11-06T04:19:26Z http://ndltd.ncl.edu.tw/handle/10647145886583605218 Influence of Slurry Change with Syngas Synthesis Process and Energy analysis 不同攜帶介質對合成氣產製程序的影響以及能源效益評估 Wei-Cheng Li 李偉丞 碩士 國立臺灣科技大學 化學工程系 103 In this study, we discuss two slurry systems, water and liquid carbon dioxide, in an Integrated Gasification Combined Cycle process. And the influence of slurry change on syngas production and energy analysis. Because the high heat capacity and high enthalpy of vaporization of water, these would lead to a low efficiency in gasifier. In order to improve the gasification efficiency, liquid carbon dioxide, CO2(l) has been proposed instead of coal-water system in the IGCC system with carbon capture. Using Aspen Plus to simulation the IGCC process, including gasifier, water-gas shift reactor, acid gas removal and carbon dioxide capture. Reference to the National Energy Technology Laboratory (NETL) report in 2012, rebuild the coal-water slurry model. Then change the slurry medium to liquid CO2(l) and compare the differences between these two systems. The result shows that at the same coal conversion, the syngas HHV in CO2 slurry system is 8.63 % higher than water slurry system. The cold gas efficiency increased about 6.84 %. Therefore, liquid carbon dioxide slurry is helpful for enhancing the gasification efficiency. In addition, the H2 production in CO2 slurry system is 8 % higher than water slurry system, the amount of CO2 capture also increased about 10 %. This study also discusses the influence of main parameters of the gasifier in CO2 slurry system, such as solids loading, oxygen to carbon ratio. The results shows that increasing the solids loading and oxygen to carbon ratio will improve the syngas HHV and cold gas efficiency. Hao-Yeh Lee 李豪業 2014 學位論文 ; thesis 111 zh-TW |
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碩士 === 國立臺灣科技大學 === 化學工程系 === 103 === In this study, we discuss two slurry systems, water and liquid carbon dioxide, in an Integrated Gasification Combined Cycle process. And the influence of slurry change on syngas production and energy analysis. Because the high heat capacity and high enthalpy of vaporization of water, these would lead to a low efficiency in gasifier. In order to improve the gasification efficiency, liquid carbon dioxide, CO2(l) has been proposed instead of coal-water system in the IGCC system with carbon capture.
Using Aspen Plus to simulation the IGCC process, including gasifier, water-gas shift reactor, acid gas removal and carbon dioxide capture. Reference to the National Energy Technology Laboratory (NETL) report in 2012, rebuild the coal-water slurry model. Then change the slurry medium to liquid CO2(l) and compare the differences between these two systems. The result shows that at the same coal conversion, the syngas HHV in CO2 slurry system is 8.63 % higher than water slurry system. The cold gas efficiency increased about 6.84 %. Therefore, liquid carbon dioxide slurry is helpful for enhancing the gasification efficiency. In addition, the H2 production in CO2 slurry system is 8 % higher than water slurry system, the amount of CO2 capture also increased about 10 %.
This study also discusses the influence of main parameters of the gasifier in CO2 slurry system, such as solids loading, oxygen to carbon ratio. The results shows that increasing the solids loading and oxygen to carbon ratio will improve the syngas HHV and cold gas efficiency.
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Hao-Yeh Lee |
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Hao-Yeh Lee Wei-Cheng Li 李偉丞 |
author |
Wei-Cheng Li 李偉丞 |
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Wei-Cheng Li 李偉丞 Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
author_sort |
Wei-Cheng Li |
title |
Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
title_short |
Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
title_full |
Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
title_fullStr |
Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
title_full_unstemmed |
Influence of Slurry Change with Syngas Synthesis Process and Energy analysis |
title_sort |
influence of slurry change with syngas synthesis process and energy analysis |
publishDate |
2014 |
url |
http://ndltd.ncl.edu.tw/handle/10647145886583605218 |
work_keys_str_mv |
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