Arapahoe low-sulfur-coal fabric filter pilot plant: Volume 3, Characterization of sonic-assisted reverse-gas cleaning, May 1982--May 1984: Final report

Technical Report · Wed Feb 01 00:00:00 EST 1989

OSTI ID:6425012

Cushing, K M; Bustard, C J; Pontius, D H; Pyle, B E; Smith, W B

During 1981 intense interest developed in the utility industry regarding the use of horns as a supplement to reverse-gas bag cleaning. To characterize and assess sonic-enhanced, reverse-gas cleaning, horns were installed at EPRI's 10-MW Fabric Filter Pilot Plant (FFPP) at its Arapahoe Test Facility located at Public Service Company of Colorado's Arapahoe Steam Plant in Denver, Colorado. In addition to the FFPP tests, laboratory studies of sonic cleaning were conducted to supplement the pilot plant data. To verify the applicability of the pilot plant and laboratory work to full-scale baghouses, field data from utility baghouses in which horns had been installed were collected. The purpose of the testing was to determine the range of horn frequencies and total output power most effective in removing residual dustcakes from bags in reverse-gas-cleaned baghouses and, hence, most effective in reducing baghouse pressure drop. No attempt was made to identify a specific horn or horns most appropriate for baghouse application. The report presents the results of this testing from May 1982 through May 1984. Results showed that horns can dislodge a significant fraction of residual dustcake, thereby reducing pressure drop by as much as 60% without any noticeable reduction in bag life. Although outlet particulate emissions are higher with sonic assistance, they are generally <0.01 lb/10/sup 6/ Btu---below the 1979 New Source Performance Standards of 0.03 lb/MBtu. The overall results of this sonic horn investigation indicate that reverse-gas cleaning with sonic assistance definitely promotes more effective bag filter cleaning and lower pressure drop, and it should be considered as a supplement for most reverse-gas cleaned baghouse applications. 10 refs., 37 figs., 7 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Southern Research Inst., Birmingham, AL (USA)
• OSTI ID: 6425012
• Report Number(s): EPRI-CS-3862-Vol.3; ON: TI89007469
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
FABRIC FILTERS
CLEANING
FOSSIL-FUEL POWER PLANTS
HOT GAS CLEANUP
SOUND WAVES
USES
AIR POLLUTION CONTROL
BAGHOUSES
BENCH-SCALE EXPERIMENTS
EXPERIMENTAL DATA
FLUE GAS
FREQUENCY MEASUREMENT
MAINTENANCE
MECHANICAL VIBRATIONS
PARTICULATES
PILOT PLANTS
PROGRESS REPORT
CONTROL
DATA
DOCUMENT TYPES
EQUIPMENT
FILTERS
FUNCTIONAL MODELS
GASEOUS WASTES
INFORMATION
NUMERICAL DATA
PARTICLES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
PURIFICATION
THERMAL POWER PLANTS
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas &amp; Particulate Emissions
010800 - Coal
Lignite
&amp; Peat- Waste Management