Pressure Swing Adsorption (PSA) technique is a common method for air separation. PSA technology is responsible for 20 % of the world's oxygen production. Air separation plants utilize large industrial PSA units to obtain enriched oxygen concentration. Produced oxygen is stored in the collection tanks and used by medical and other industries upon demand. In 1999 alone 16.4 million Americans suffered from Chronic Obstructive Pulmonary Disease (COPD). The need for smaller and more efficient oxygen separation technique is emphasized by the fact that the smallest conventional PSA unit that can provide oxygen for COPD patients weighs 25 kg; and that conventional PSA process suffers from low productivity per unit mass of adsorbent. The lives of 16.4 million Americans can be improved by availability of small, efficient, and portable air separation device. Oxygen separation technique on the micro scale would provide oxygen to people living in hard to reach places, where oxygen-refilling facilities are thousands of miles away. It can also serve its purpose in aircraft industry where pilots use oxygen-enriched air at high altitudes. In addition, portable oxygen concentrators can be used in automotive industry. Car carburetor working on enriched oxygen would maximize car performance and minimize the production of nitrogen oxides during combustion of fuel. Finally, portable oxygen concentrator would provide oxygen-enriched air for mountain climbers at high altitudes. There is a need to take conventional Pressure Swing Adsorption technology to a micro scale and investigate a potential of Ultra-Rapid Pressure Swing Adsorption (URPSA). In this thesis mathematical model of URPSA will be developed to prove the viability and superior separation efficiency per unit mass of adsorbent material of Ultra-Rapid PSA. A mathematical model of Ultra-Rapid PSA process is the first step in determining the viability of this novel technology. The proposed mathematical model will investigate the reach of URPSA process as an alternative method for oxygen production for COPD patients and other potential applications. Once model is developed, the impact of most of the important parameters on the separation factor and product flow rate will be investigated. Optimal parameters will serve as design criteria for the prototype portable oxygen concentrator.
|School:||University of Cincinnati|
|Department:||Engineering : Chemical Engineering|
|School Location:||United States -- Ohio|
|Source:||MAI 57/06M(E), Masters Abstracts International|
|Keywords:||Air separation, Portable oxygen concentrator, Ultra-rapid psa|
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