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- Title
Implementing CO2 capture process in power plants: Optimization procedure and environmental impact.
- Authors
Romero-García, Ana Gabriela; Mora-Morales, Carolina; Chargoy-Amador, Juan Pablo; Ramírez-Corona, Nelly; Sánchez-Ramírez, Eduardo; Segovia-Hernández, Juan Gabriel
- Abstract
• Global warming is one of the main challenges to solve in the 21st century. • Efficiency of capture processes is related to the CO 2 concentration in the combustion gas. • Best alternative for capture is the one that considered biogas as fuel. Because of the current high concentrations of greenhouse gases in the atmosphere, global warming is one of the main challenges to solve in the 21st century. The present work evaluated the environmental impact of coupling an optimized CO 2 capture plant to an electric power generation plant. The use of four different fuels in the power plant was considered; biogas, coal, non-associated natural gas, and associated natural gas. Two operating scenarios were considered; in the first, the same fuel flow was considered for all the plants, and in the second, the same energy demand was specified. The design and simulation of the process plants were developed using the ASPEN Plus simulator, optimization using a stochastic technique named Differential Evolution with Tabu List, while the LCA was carried out with SimaPro software. The efficiency of the capture processes is directly related to the CO 2 concentration in the combustion gas and the absorbent flow for CO 2 capture. Note that both the energy used and the demand for the solvent in CO 2 capture are variables that significantly affect the environmental impact of the overall process, so it is necessary to determine the effect of selecting one fuel or another in the generation stage and capture of CO 2 such as energy requirements, design parameter in the downstream process, and so on. According to the results obtained, for the scenario with a constant flow, the best alternative for capture is the one that considers biogas as fuel. On the other hand, non-associated gas was the most promising alternative for the scenario with constant energy demand.
- Subjects
CARBON sequestration; POWER plants; COAL-fired power plants; ELECTRIC power production; NATURAL gas; COMPUTER performance; ELECTRIC power plants; ENERGY consumption
- Publication
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A, 2022, Vol 180, p232
- ISSN
0263-8762
- Publication type
Article
- DOI
10.1016/j.cherd.2022.02.023