Two Phase Mass Transfer in Gas Stirred Reactors
1988
Gas stirred reactors are used in several metallurgical processes, such as the desulfurization of liquid cast iron, to increase the rate of the chemical reaction and homogenize the melt. Mixing times and two phase
mass transferrates were measured in a model system of a liquid steel
ladle. Mixing times were increased by the presence of a second phase and were faster for off-center
tuyeres. However, two phase
mass transferis faster for a center
tuyereas compared to an off-center
tuyere. The rate of
mass transferwas independent of
tuyeresize, lance versus
tuyereinjection and only slightly dependent on the viscosity of the second phase. The dramatic increase in
mass transferat a critical flow rate is explained in terms of an increase in the interfacial area between the two phases.
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