IES Seminar Series - Dr Juan Riaza


Alrick Room D/E


Friday, February 27, 2015 - 13:00 to 14:00
Speaker: Dr Juan Riaza
Title: Oxy-fuel combustion of coal and biomass blends
Coal will continue in the future as a global energy source. However, the future of coal power plants must be implemented with CO2 capture technologies. Oxy-fuel is one of these technologies in which fuel is burnt in a mixture of oxygen and recycled flue gas, instead of air, and so the flue gas is a rich CO2 and water vapour stream. The replacement of N2 by CO2and the higher O2 concentrations in oxy-fuel combustion atmospheres entails several changes in coal and biomass combustion that must be addressed in order to maintain stability and combustion efficiency. On the other hand biomass energy is considered carbon neutral, so cofiring of coal and biomass under oxy-fuel conditions can be a method to improve the efficiency of the combustion and achieve net CO2 reduction. During the PhD, various experimental devices were used including a thermo gravimetric analyzer, a drop tube furnace and an entrained flow reactor. Ignition and combustion under different oxy-fuel combustion conditions, and under air as reference, have been studied using these devices.
Juan Riaza is working at the University of Edinburgh as postdoctoral research associate since august 2014. He is mining engineer and master in energy engineering by the University of Oviedo in Spain. He worked and did his PhD thesis at the INCAR-CSIC in Spain entitled: Carbon dioxide capture in coal fired power stations: cofiring of coal and biomass blends under oxy-fuel conditions. He also worked in projects related to biomass gasification, torrefaction and cofiring. Now, as postdoctoral researcher Juan is involved in projects for biomass combustion.
IES Seminar Series - Sponsored by EngGradSoc
IES Seminar Series - Sponsored by EngGradSoc

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Joseph Burchell

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