Membrane R&D for gas separation. (Trends).(coal gas)(Brief Article)(Statistical Data Included)
Industrial Heating, September, 2002
One of the U.S. Department of Energy, Office of Fossil Energy (FE) Vision 21 goals is the development of efficient gas separation to support gasification-based systems to achieve power using coal with near-zero emissions, coupled with separation, or sequestration, of [CO.sub.2]. Membrane separation of oxygen from air and hydrogen from the coal-gas stream has potential to increase efficiencies and lower cost. Hydrogen from gasification-derived syngas can be used both as a clean fuel and processing agent.
Membranes typically are made of ceramics (metal oxides) and ceramic-metallic composites (cermets), which include catalytic materials designed to enhance reactivity. Gas separation enables the conversion of a wide variety of feedstocks (including coal, biomass,...
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