Integrated Low Emissions Cleanup system for direct coal fueled turbines

Abstract

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Westinghouse Status of Coal and Biomass Fueled Combustion Turbine Systems for Power Generation

“…Westinghouse is developing in-filter, fuel gas desulfurization as either a bulk sulfur , removal or as a polishing removal step (Newby and Bannister, 1994). DOE has sponsored Westinghouse to test and evaluate an Integrated Low Emissions Cleanup (MEC) system based on the injection of sorbents into a barrier ceramic filter vessel (Newby et al, 1995). Westinghouse has concluded that the use of fine sorbent particles injected into a ceramic filter could permit cheaper, unsupported regenerative polishing sorbent to be used more effectively than the relatively coarse regenerative sorbents being demonstrated today.…”

“…Alkali vapor content of the gas is also a concern, and alkali removal may be required. DOE has sponsored Westinghouse to test and evaluate an ILEC system based on the injection of sorbents into a barrier ceramic filter vessel at simulated PFBC conditions (Newby et al, 1995). Controlled testing has shown in this program that high level of removal can be achieved in the filter vessel by the injection of modest amounts of pulverized dolomite into the inlet of the filter.…”

Integrated low emissions cleanup system for coal fueled turbines Phase III bench-scale testing and evaluation

“…A similar fluid bed filter concept, using immersed candle filter elements in the bed has been previously proposed for use in catalytic reactor systems (Degnen, et al, 1951). Cold model testing of the fluid bed ILEC was previously performed by Westinghouse and reported (Newby, et al, 1990). Supplemental testing of the fluid bed ILEC was conducted in Phase 111 of this program and is reported in Appendix D.…”

“…Based on the state-of-readiness of the technologies, and the technical uncertainties identified in the fluid bed ILEC testing, the primary concept of interest is the ceramic barrier filter concept. Cold model testjng of the fluid bed ILEC was previously performed by Westinghouse and reported (Newby, et al, 1990).…”

Integration of Combustion Turbine Systems Into Pressurized Fluidized Bed Combustion Combined Cycles

“…The small alkali sorbent particles remove alkali vapors while they reside in the gas phase and during their longer residence time within the filter cake. Reaction kinetics have been measured in laboratory rigs, and larger scale testing has been initiated in a nominal 2.8 m 3/min filter test facility (Newby et al, 1992).…”