CONTINUOUS DISSOLVER THEORY. III. DEVELOPMENT OF GENERAL TANK-FLOW RELATIONSHIPS WITH APPLICATION TO PILOT PLANT DATA FOR A FLOODED COLUMN DISSOLVER

Technical Report · Wed Apr 01 04:00:00 EST 1959

DOI:https://doi.org/10.2172/4246434· OSTI ID:4246434

Erickson, E E

General relationships are developed for the performance of continuous flooded dissolvers based on complete mixing, such as tank flow, uniform packing characteristics of metal, and a first-order rate law. The form of the final equation is the same as that derived for the nonmixing or tube-flow case discussed in earlier reports of this series, with differences appearing only in the term that expresses the concentrations of metal and dissolvent in the liquid phase. The relationships are applied to available pilot plant data on the mercury-catalyzed dissolution of four shapes of 2S aluminum elements. The data cover a range of catalyst concentrations from 1.5 x 10/sup -6/ to 3.75 x 10/sup - 4/ molar Hg/sup 2+/ and metal bed heights from 1 to 10 feet in a 2-inch pyrex column. The average initial dissolvent concentration was 5.6M nitric acid. Round rods, flat plates, tubes, and flattened tubes are compared. The data for the round rods are utilized to determine the effective reaction velocity constants at the various catalyst concentrations. The general dissolver equation is used to predict the effect on dissolution rate of the shape of metal elements, liquid phase flow rate, and height of the bed of elements. Calculated rates follow the trends in the data, but not quite so well as calculated rates for the nonmixing or tube-flow case. The mathematical representation of the model is generally consistent with the pilot plant data. (See also IDO-14450 and IDO- 14451.) (auth)

• Research Organization: Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
• Sponsoring Organization: USDOE
• DOE Contract Number: AT(10-1)-205
• NSA Number: NSA-13-011689
• OSTI ID: 4246434
• Report Number(s): IDO-14452
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
CATALYSIS
CHEMISTRY
CONFIGURATION
EQUATIONS
EXTRACTION COLUMNS
FABRICATION
FLUID FLOW
GLASS
LABORATORY EQUIPMENT
LIQUID FLOW
LIQUIDS
MEASURED VALUES
MERCURY
METALS
MIXING
MOCKUP
NITRIC ACID
NUCLEAR REACTIONS
PERFORMANCE
PILOT PLANT
PLANNING
PLATES
QUANTITY RATIO
RADIOCHEMISTRY
REACTION KINETICS
RODS
SOLUTIONS
TABLES
TESTING
TUBES
VESSELS
WATER