Polydispersed solids behavior in a bubble column. [Slurry bubble columns]

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5759026

Smith, D N; Ruether, J A; Stiegel, G J

New data and theory are presented for describing polydispersed solids in slurry bubble columns. Axial solids concentration distributions were measured in a 0.108-m-ID slurry bubble column apparatus operated at steady-state conditions. Slurry and gas superficial velocities ranged from 0.007 to 0.02 m/s and 0.03 to 0.20 m/s, respectively. The liquid phase was water and the solid phase consisted of binary or ternary mixtures of narrow-sized fractions of glass spheres. The experimental data have been used to develop a method for predicting average solids loadings and axial distributions of solids in a bubble column with a one-dimensional sedmentation-dispersion model. Correlations are given for the hindered settling velocity, the solids dispersion coefficient, and the solids concentration at the top and bottom of the column. The effect of a distribution of particle size is interpreted by summation of the concentration of solids for each discrete particle size fraction. 12 refs., 13 figs.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 5759026
• Report Number(s): CONF-841121-20; ON: DE85013463
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
BUBBLES
CHEMICAL REACTORS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
FLUID MECHANICS
GLASS
HYDROGEN COMPOUNDS
INFORMATION
MECHANICS
MEDIUM TEMPERATURE
MIXTURES
NITROGEN
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PARTICLE SIZE
SEDIMENTATION
SIZE
SLURRIES
SOLIDS
SPHERES
STEADY-STATE CONDITIONS
SUSPENSIONS
VELOCITY
WATER