Velocity profiles of granules in moving bed filters for flue gas cleanup

Conference · Wed Apr 01 04:00:00 EST 1998

OSTI ID:585395

Hsiau, S S; Wang, C Y ^[1]; Smid, J ^[2]

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1. National Central Univ., Chung-Li (Taiwan, Province of China)
2. National Taiwan Univ., Taipei (Taiwan, Province of China); and others

The velocity fields in three symmetric and two asymmetric louver-walled moving bed systems are studied experimentally. The results indicate that the velocity profiles of filter granules are influenced by the louver geometry. When the louver angle is small, the velocity profile of filter granules is close to plug flow. When the angle of louvers is large, the quasi-stagnant zones exist alone the louver walls. The velocity profiles are less uniform with faster flowing core in the central part of filter bed. The refreshing rate of filter granules can be very low for the asymmetric louvered system. The kinematic model for predicting the granule velocity distribution is also used for analyzing the three symmetric louver geometries.

• Research Organization: Coal and Slurry Technology Association, Washington, DC (United States)
• OSTI ID: 585395
• Report Number(s): CONF-980309--PROC.
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
COAL
FLOW RATE
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GRANULAR BED FILTERS
GRANULAR MATERIALS
HOT GAS CLEANUP
VELOCITY
WALLS