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RISS 인기검색어
- 검색키워드
- 저자 : Haider Sultan (검색결과 1 건)
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Modelling of advanced post combustion CO2 capture process integrated with coal fired power plant
Haider Sultan University of Science and Technology, Korea Instit 2021 국내석사
Carbon capture and storage is considered as a key technology to decarbonize the heat and power industry and to achieve the net zero emission targets. Despite the global consensus, the significant energy expenditure of the carbon capture and storage process inhibits the implementation of the carbon capture and storage in the power sector. Process modification is an effective method to reduce the high thermal energy required for solvent regeneration in solvent based post-combustion carbon dioxide capture and storage process. The objective of this study is to develop an advanced post combustion carbon dioxide capture process with lower regeneration energy and investigate its integration with an existing coal fired power plant. In this study, we have developed a thermodynamic model for post combustion carbon dioxide capture process in Aspen Plus® using rigorous rate-based modelling. The conventional process is simulated using 30 wt.% MEA solvent. The model is validated using CESAR pilot plant test campaign data. To develop the advanced process, a new systematic approach to modify and reduce the energy consumption of the process is developed by splitting the regeneration energy into different parts and calculate the magnitude of avoidable components. The process is then modified, aiming to reduce the avoidable components of the regeneration energy. The process modification approach is used to design an advanced process with lower regeneration energy. A supercritical coal fired power plant model is developed in Ebsilon Professional®. The power plant model is validated by comparing the result with Department of Energy’s report. A more realistic approach for retrofitting projects such as integration of carbon dioxide capture process, off-design performance analysis, is used to study the integration of conventional and advanced processes with designed power plant. In addition, the economic benefit of integrating advanced post-combustion carbon dioxide capture process with coal fired power plant is investigated. The results of the study show that process improvement has the potential to reduce the thermal energy requirement of the CCS process. Off-design performance analysis reveals that the integration of advanced process can improve the power plant performance. The economic analysis shows a net profit of 6.7 million USD/year for 30 years by integrating advanced process instead of conventional process with power plant.
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