Abstract

This dissertation explores the vital task of separating and purifying CO2 in post-combustion sections of gas power plants. It focuses on integrating spray or steam ejector condenser with cyclone or T-junction separators to enhance CO2 capture through direct-contact condensation (DCC). The study employs experimental, analytical, and numerical techniques to understand DCC mechanisms within SEC and optimize separator performance. Integration of SEC with cyclone separators is investigated, optimizing steam and CO2 flow rates, droplet breakup, and cyclone cone size to improve CO2 purification efficiency. Structural modifications and parameter optimization enhance separator performance. The dissertation also explores optimizing cyclone separators with vanes and integrating SEC with T-junction separators. It emphasizes parameter optimization to enhance CO2 capture effectiveness and investigates innovative techniques like steam ejector condenser with electrohydrodynamic (EHD) actuators. Therefore, the dissertation contributes to advancing CO2 capture technologies by providing insights into integrating SEC with separators, optimizing operational parameters, and exploring novel techniques to enhance CO2 purification efficiency in gas power plant post-combustion sections.

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