Moving granular-bed filter for multi-contaminant control

Conference · Sat Dec 30 23:00:00 EST 1995

OSTI ID:257038

McDaniel, H M ^[1]; Haas, J C; Wilson, K B ^[2]; Gupta, R P ^[3]

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1. Dept. of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center
2. Combustion Power Co., Oakland, CA (United States)
3. Research Triangle Inst., Research Triangle Park, NC (United States)

In addition to the control of ash particulates, a moving granular-bed filter can control other contaminants found in high-temperature, high-pressure coal gas streams through the use of chemically-reactive filter media. Under sponsorship of the US Department of Energy, a laboratory test program is underway to evaluate the following three types of chemically-reactive filter media: a clay-based filter medium for the control of alkali and heavy metals in either reducing or oxidizing environments, a sodium-based filter medium for the control of halogens and metaloids in reducing-gas environments, and a nickel catalyst for the destruction of ammonia and hydrogen cyanide in a reducing-gas environments. The test program calls for the evaluation of techniques for forming reactive clay filter media and the evaluation of the structural and chemical properties of clay media, nahcolite (NaHCO{sub 3}) media, and media composed of nickel catalysts. Initial results of the development of a clay-based filter medium are presented.

• OSTI ID: 257038
• Report Number(s): CONF-950952--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ALKALI METALS
AMMONIA
CATALYSTS
CHEMICAL COMPOSITION
CLAYS
COAL GASIFICATION
DEASHING
DEHALOGENATION
DEHYDROGENATION
DEMETALLIZATION
DENITRIFICATION
FUEL GAS
GRANULAR BED FILTERS
HOT GAS CLEANUP
HYDROCYANIC ACID
MATERIALS TESTING
REMOVAL
SODIUM CARBONATES
THERMAL GRAVIMETRIC ANALYSIS