Preliminary evaluation of FIBROSIC{trademark} candle filter for particulate control in PFBC

Conference · Fri Jul 01 04:00:00 EDT 1994

OSTI ID:10166853

Lee, S H.D. ^[1]; Eggersedt, P; Zievers, J F ^[2]; Honea, F I ^[3]

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1. Argonne National Lab., IL (United States)
2. Industrial Filter and Pump Mfg. Co., Cicero, IL (United States)
3. Illinois Clean Coal Inst., Carterville, IL (United States)

The FIBROSIC{trademark} candle filter is made by vacuum-forming a select blend of aluminosilicate fibers with silica and alumina binders and is potentially useful as a hot-gas cleanup device for particulate control in pressurized fluidized-bed combustion (PFBC). It has the advantages of lighter weight, lower cost, and lower tendency for thermal shock breakage over the more widely studied SiC candle filter. Both filter types were tested with Illinois No. 6 high-sulfur coal in a laboratory-scale PFBC/alkali sorber facility for (1) particulate collection efficiency, (2) permeability characteristics, and (3) physical and mechanical strength and integrity. Tests were conducted at 800--825{degrees}C and a system pressure of 9.2 atm. Filter face velocities were 5.1 and 10.2 cm/s (10 and 20 ft/min) during test periods of 8 and 9.5 h for SiC and FIBROSIC{trademark} candle filters, respectively. The filters were periodically cleaned by a reverse jet pulse of N{sub 2} gas. Both filter types achieved particulate collection efficiencies >99.9% and exhibited comparable permeability characteristics. Although the FIBROSIC{trademark} candle filter has inherently lower bursting strength than the SiC, its physical and mechanical strengths were demonstrated to be sufficient to maintain the integrity of the filter element under PFBC conditions.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10166853
• Report Number(s): ANL/CMT/CP--81612; CONF-940812--15; ON: DE94015059
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800
20 FOSSIL-FUELED POWER PLANTS
200202
ALUMINIUM COMPOUNDS
BITUMINOUS COAL
COMPARATIVE EVALUATIONS
FILTERS
FLUIDIZED-BED COMBUSTION
HOT GAS CLEANUP
MECHANICAL PROPERTIES
NOXIOUS GAS AND PARTICULATE EMISSIONS
PARTICULATES
PERFORMANCE TESTING
POROSITY
PRESSURE DROP
SILICATES
SILICON CARBIDES
WASTE MANAGEMENT