Oxy-Coal Combustion in a Small-Scale CFB

摘要

Oxy-coal combustion to facilitate carbon capture and sequestration is the focus of numerous research and development activities. Recently, Praxair collaborated with the University of Utah to study some of the fundamental impacts of oxy-coal combustion in fluidized bed combustion. An existing circulating fluid bed (CFB) combustor was modified to allow firing with oxygen-enriched recirculated flue gas. Experiments with this facility were able to routinely achieve CO_2 concentrations greater 85% (dry basis). Bed temperature and pollutant emissions were measured under both air-firing and oxy-coal firing.