Study of droplet formation for preparation of spheres by internal gelation
The internal-gelation process can be used to permanently immobilize highly radioactive nuclear wastes. A study was conducted to determine the factors affecting the formation of stable, uniform droplets from a vibrating nozzle, which is a critical step in this process. Experimental data were collected using four nozzle diameters (325 to 586 ..mu..m) with jet velocities ranging from 1 to 10 m/s, and three test liquids, whose physical properties cover the possible range of the waste fluid. A dimensional analysis identified the pertinent dimensionless groups as Reynolds, Weber, Froude, and Power numbers, and a dimensionless droplet spacing. Power-function correlations of the data in these dimensionless groups are presented, which define the region of good droplet formation. A unique catcher-stream design is also presented, which improves performance of the process at higher flow rates and frequencies.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Massachusetts Inst. of Tech., Oak Ridge, TN (USA). School of Chemical Engineering Practice
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5562631
- Report Number(s):
- ORNL/MIT-337; ON: DE82007500; TRN: 82-007794
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DROPLETS
PRODUCTION
GLYCEROL
DENSITY
SURFACE TENSION
VISCOSITY
GLYCOLS
RADIOACTIVE WASTE PROCESSING
GELATION
WATER
EXPERIMENTAL DATA
FLOW RATE
HIGH-LEVEL RADIOACTIVE WASTES
JETS
MICROSPHERES
NOZZLES
SOLIDIFICATION
VELOCITY
ALCOHOLS
DATA
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
MANAGEMENT
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARTICLES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SURFACE PROPERTIES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing