PGE/REWE 2015

Sessions Speakers Exhibitors Products Press Releases Show Specials Floor Plan

Development of a Pilot Scale Coal Powered Oxy-fired Pressurized Fluidized Bed Combustor with CO2 Capture (Room D203, Elicium, Second Floor)

A pilot scale Oxy-fired Pressurized Fluidized Bed Combustor (Oxy-PFBC) is under development as a method to enable the use of coal for electricity generation while capturing the CO2 and other emissions at a cost that is significantly less than the current state of the art post-combustion capture technologies. This paper discusses the features of the Oxy-PFBC, component test results, techno-economic analysis results, and development and commercialization plans. Techno-economic analysis indicates the Oxy-PFBC system exceeds the United States Department of Energy goals of less than 35% increase in the cost of electricity while capturing at least 90% of the CO2 emissions. Predictions show 90-98% capture with an 18-31% increase in cost of electricity. The largest increase here (31%) is based on 98% capture with use of existing technology wherever possible, while insertion of other advanced technologies, such as air separation units (ASUs) expected to be available in the next 3-5 years, and supercritical CO2 Brayton cycles available in the longer term can reduce the cost of electricity to only an 18% increase. These results assume no economic benefit of the captured CO2. Key risk mitigation testing conducted prior to pilot scale testing includes kinetics testing for coal and limestone particles, and cold flow combustor testing. These tests validate key assumptions regarding particle residence times and expected pilot scale efficiencies for the elutriated bed combustor. The current development plans include completion of pilot scale testing by early to mid-2017, with demo plant operation by 2020.