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Relationship between fluid bed aerosol generator operation and the aerosol produced

Journal Article · · Am. Ind. Hyg. Assoc. J.; (United States)
;

The relationships between bed operation in a fluid bed aerosol generator and aerosol output were studied. A two-inch diameter fluid bed aerosol generator (FBG) was constructed using stainless steel powder as a fluidizing medium. Fly ash from coal combustion was aerosolized and the influence of FBG operating parameters on aerosol mass median aerodynamic diameter (MMAD), geometric standard deviation (sigma/sub g/) and concentration was examined. In an effort to extend observations on large fluid beds to small beds using fine bed particles, minimum fluidizing velocities and elutriation constant were computed. Although FBG minimum fluidizing velocity agreed well with calculations, FBG elutriation constant did not. The results of this study show that the properties of aerosols produced by a FBG depend on fluid bed height and air flow through the bed after the minimum fluidizing velocity is exceeded.

Research Organization:
Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM
DOE Contract Number:
AC04-76EV01013
OSTI ID:
7033854
Journal Information:
Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 41:12; ISSN AIHAA
Country of Publication:
United States
Language:
English

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Related Subjects

500100* -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERODYNAMICS
AEROSOL WASTES
AEROSOLS
ALLOYS
CHROMIUM ALLOYS
COLLOIDS
CORROSION RESISTANT ALLOYS
DATA
DISPERSIONS
ELUTRIATION
EXPERIMENTAL DATA
FLUID MECHANICS
FLUIDIZED BED
FLUIDIZED BED REACTORS
FLY ASH
FUEL DISPERSION REACTORS
HOMOGENEOUS REACTORS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICS
NUMERICAL DATA
PARTICLE SIZE
POWDERS
PRESSURE DEPENDENCE
PRODUCTION
REACTORS
SEPARATION PROCESSES
SIZE
SOLS
STAINLESS STEELS
STEELS
TIME DEPENDENCE
VELOCITY
WASTES