THE EFFECT OF MIXER DESIGN ON THE EFFICIENCY OF A PUMP-MIX MIXER-SETTLER

Journal Article · Wed Mar 01 04:00:00 EST 1961 · A.I.Ch.E. Journal

DOI:https://doi.org/10.1002/aic.690070118· OSTI ID:4069739

Davis, A T; Colven, T J

The mixing efficiency of simple and pitched paddles, marine propellers, and centrifugal and disk impellers was determined by a heat-transfer method in a single stage of a large pump-mix mixer-settler. The mixing devices were from 3 to 5 in. in diameter and were tested with a refined kerosene as the organic phase and water as the aqueous phase. A heat conductance was calculated from flow parameters and the efficiency and was correlated against impeller design and speed variables. For centrifugal and disk impellers, UA was propontional to n/ sup 1.2/L/sup 3/Lb/sup 0.3/; for t he paddies, UA was propontional to n/sup 1.6// sup 7/L/sup 2.5/b/sup 0.4/ >s/sup 2/. At normal operating speeds controlled variation of the internal recirculation of mixed phases through a centrifugal impeller did not change the efficiency. (auth)

• Research Organization: E. I. du Pont de Nemours and Co., Inc., Aiken, S.C.
• NSA Number: NSA-15-013038
• OSTI ID: 4069739
• Journal Information: A.I.Ch.E. Journal, Journal Name: A.I.Ch.E. Journal Vol. Vol: 7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

EFFICIENCY
ENGINEERING AND EQUIPMENT
HEAT TRANSFER
HYDROCARBONS
KEROSENE
LABORATORY EQUIPMENT
MACHINE PARTS
MIXER-SETTLERS
MIXING
PUMPS
SOLUTIONS
TESTING
WATER