Complex Processes of Oxygen Production for Oxy-Combustion Applications

• Autorzy: Chorowski M. , Gizicki W.
• Języki publikacji: EN

Abstrakty

EN

Oxy-combustion is presently considered as the most promising technology to enable the capture of CO2 from fossil fuel based power plants. The concept of oxycombustion is to use oxygen instead of air in the combustion process thus achieving a high concentration of CO2 in the flue gas. In this technology an exemplary 1 GWe thermal power plant will require daily about 18000 tons of oxygen. A potential implementation of oxy-combustion for power generation on significant scale, would necessitate the present oxygen production capacity increase by at least an order of magnitude. Oxygen is produced on industrial scale in the process of air separation using cryogenic, adsorption, membrane, and emerging technologies (like perovskite membranes). The paper categorizes oxygen production methods with respect to the oxy-combustion requirements. A techno-economic analysis of most perspective air separation technologies, with respect to desired thermodynamic states of the air separation products, is presented. The optimum oxygen purity resulting from oxy-combustion technology is estimated. The possibilities of energy consumption decrease by allowing higher fraction of impurities in the separated oxygen are analyzed. The presented considerations take into account an unprecedented scale of potential oxygen supply requirements caused by the CCS policy. The impact of the oxy-combustion technology on the thermal power plant efficiency is discussed.

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2012
• Tom: Vol. 32 nr 3-4
• Strony: 75--82
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Chorowski M.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

autor

Gizicki W.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

Bibliografia

• 1. Chorowski M., Cryogenics - basics and applications, IPPU MASTA, Gdansk (2007), (in Polish).
• 2. Grzegory P., private communication, 2011
• 3. Fu C., Gundersen T., Optimized Air Separation Units for Oxy-Combustion Processes, Proc. of the 23rd IIR International Congress of Refrigeration, Prague, Czech Republic, August 21 - 26 (2011)
• 4. Prosser N., Shah M., Air Separation for Oxy-coal Power Plants, Proc. of the 2nd Oxyfuel Combustion Conference, Queensland, Australia, September 12 - 16 (2011)
• 5. Wilkinson M. B., Boden J. C., Panesar R. S., Babcock M., Allam R. J., CO2 Capture via Oxyfuel Firing: Optimisation of a Retrofit Design Concept for a Refinery Power Station Boiler, First national Conference on Carbon Sequestration, Washington DC, USA, May 15-17 (2001)