Gas-side mass-transfer coefficient and interfacial phenomena of flat-bladed surface agitators
Abstract
The interfacial phenomena and the mass transfer coefficient on the gas side for mechanically-driven surface agitators were studied. Aqueous sulfuric acid of 3.5 normality and ammonia in air was the chemical system used in experiments to resistance to mass transfer to the gas side. Ammonia was the component being transferred. The interfacial agitation took place inside a cylindrical tank with the agitators being four-bladed impellers, each blade being flat and vertical. The liquid disturbance caused by the agitation was separated into surface waves which formed logarithmic spiral patterns, flat sheets thrown outward from each blade, and drops and globs which separated from the sheets. The coefficient was found to increase with increasing impeller speed. The coefficient was slightly greater when the blades were fully submerged than when half submerged.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1977
- Bibcode:
- 1977PhDT........62R
- Keywords:
-
- Agitation;
- Ammonia;
- Gas Transport;
- Liquid-Vapor Interfaces;
- Mass Transfer;
- Sulfuric Acid;
- Flat Plates;
- Impellers;
- Rotor Blades (Turbomachinery);
- Fluid Mechanics and Heat Transfer