CONTINUOUS DISSOLVER THEORY. II. APPLICATION OF TUBE-FLOW DISSOLVER THEORY TO DATA FROM A 2-INCH, CONTINUOUS FLOODED DISSOLVER
General relationships for the performance of a continuous flooded dissolver, derived earlier, were applied to available pilot plant data on ihe mercury-catalyzed dissolution of 2S aluminum in nitric acid for four shapes of metal elements. The relationships were based on nomixing flow of the liquid phase, uniform metal packing characteristics, and a first-order reaction rate law. The metal elements were round rods:1/4 inch in diameter and 3 inches long, 5 x 0.625 x 0.0625-inch flat plates, tubes 0.625 inch in diameter and 3 inches long with a 0.028inch wall thickness, and the same tubes flattened so as to have about a 0.03-inch gap between sides. The dissolver was a 2-inch Pyrex column, and the effective height ranged from 8 to 10 feet. Some data were available also for the dissolution of the round rods and tubes in which the height of the bed of elements varied from about 1 to 10 feet. The average nitric acid concentration in the dissolvent feed was 5.6 molar. The data for round rods were used to determine effective reaction velocity constants for catalyst concentrations ranging from 1.5 x 10/sup -6/ to 3.75 x 10/sup -4/ molar Hg/sup 2+. The general equation was used to predict the effect of the shape of metal elements, the flow rate of the dissolvent, and the height of bed of elements on the dissolution rate. The calculated rate followed the trends in the data and showed the model as expressed by the dissolver equation to give a picture generally consistent with experimental results from the pilot plant. (auth)
- Research Organization:
- Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
- DOE Contract Number:
- AT(10-1)-205
- NSA Number:
- NSA-13-005334
- OSTI ID:
- 4294162
- Report Number(s):
- IDO-14451
- Country of Publication:
- United States
- Language:
- English
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EFFECT OF GEOMETRICAL SHAPE ON THE CONTINUOUS DISSOLUTION OF ALUMINUM IN MERCURY-CATALYZED NITRIC ACID
A BENCH-SCALE NATURAL-RECIRCULATION DISSOLVER
Related Subjects
ALUMINUM BASE ALLOY
CATALYSIS
CHEMICAL REACTIONS
CHEMISTRY
CONCENTRATION
CONFIGURATION
EQUATIONS
EXTRACTION COLUMNS
GLASS
LEACHING
LIQUID FLOW
MEASURED VALUES
MERCURY COMPOUNDS
MIXING
NITRIC ACID
PERFORMANCE
PILOT PLANT
PLATES
PYREX
QUANTITATIVE ANALYSIS
QUANTITY RATIO
REACTION KINETICS
RODS
SOLUTIONS
TESTING
THICKNESS
TUBES
VELOCITY