Arapahoe low-sulfur-coal Fabric Filter Pilot Plant: Volume 4, Shake-deflate cleaning tests, May 1984--July 1986: Final report

Technical Report · Thu Jun 01 04:00:00 EDT 1989

OSTI ID:6362957

Cushing, K M; Bustard, C J; Smith, W B

This report describes operations at EPRI's low-sulfur coal Fabric Filter Pilot Plant during a twenty-seven month evaluation of shake-deflate cleaning. The primary objective was to collect sufficient data to optimize shake-deflate parameters and to allow prediction of baghouses operation with this cleaning method at utility power plants burning low-sulfur coal. The tests evaluated baghouse performance (pressure drop at various filtering air-to-cloth ratios, dustcake weight, and emissions) as a function of bag-cap acceleration, shake frequency, shake duration, and deflation volume. The findings indicate that shake-deflate cleaning can reduce cake weight and tube-sheet pressure drops by greater than 50% over conventional reverse-gas cleaned units. No bag life problems were observed over 11,000 h of testing, and emissions were very low (0.006 lb/10/sup 6/ Btu). Minimum filter pressure drop was attained at a bag-cap acceleration of 1.4 g (amplitude 2 in. and frequency 3 Hz). Low frequency high-amplitude shaking was more effective than high-frequency low-amplitude shaking. Shake durations around 20 s (at 3 Hz) preceded by deflation flows equivalent to about one-sixth total bag volume (1 ft/min deflation flow for 3 s) gave optimal performance. 9 refs., 12 figs., 5 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Southern Research Inst., Birmingham, AL (USA)
• OSTI ID: 6362957
• Report Number(s): EPRI-CS-3862-Vol.4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION CONTROL
BAGHOUSES
CLEANING
CONTROL
DOCUMENT TYPES
EQUIPMENT
FABRIC FILTERS
FILTERS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
FUNCTIONAL MODELS
GASEOUS WASTES
HOT GAS CLEANUP
MAINTENANCE
MECHANICAL VIBRATIONS
PILOT PLANTS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
PROGRESS REPORT
PURIFICATION
THERMAL POWER PLANTS
WASTES