A Parametric Study for the Removal of CO2 From a Fossil Fuel Power Plant Flue Gas

Tuesday, November 9, 2010
Hall 1 (Salt Palace Convention Center)
Paula Restrepo, University of Hartford, West Hartford, CT and Thomas Filburn, Mechanical Engineering, University of Hartford, West Hartford, CT

Because of the concern for greenhouse gas emissions and climate change, there has been a large growth in interest in the scientific and political arenas for carbon dioxide capture. The interest seeks to find methods to remove, capture, and sequester carbon dioxide from the flue gas effluent of fossil fuel power plants. Currently, there are three methods that are being researched for the removal and capture of CO2. These include pre-combustion, during combustion, and post-combustion. Pre-combustion uses chemical and physical solvents for gasification processes. During combustion, uses a rich oxygen gas stream for combustion and is often called oxy-firing combustion. Post-combustion uses processes such as chemical and physical absorption, adsorption, gas membranes and cryogenic distillation.

This project concentrates in the removal of CO2 with a post-combustion technology. The focus of this project is to analyze the behavior of CO2 in the gas as it is being removed by parallel active plates. The model consists of a channel with two parallel plates that are removing CO2 from the flue gas. With this model, the most effective channel dimensions are determined. In addition, the concentration profile, pressure drop through the system and the effects of CO2 removal efficiency are also analyzed. Finally, the temperature effects on the mass transfer coefficient and its contribution to the overall length of the system are also analyzed.

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