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A REVIEW OF PULSE-COLUMN FLOODING DATA AND CORRELATIONS WITH PROPOSED METHODS OF CORRELATION

Description: Progress is reported in assembling available unclassified flooding data in perforated-plate pulsed extraction columns through January 1, 1963. Existing correlations are critically reviewed, and recommendations are made to develop a better flooding correlation. (auth)
Date: June 1, 1963
Creator: McAllister, R.A. & Ryon, A.D.
Partner: UNT Libraries Government Documents Department

BRANCHED ALKANES FROM BLUE-GREEN ALGAE

Description: Branched alkanes from blue-green algae were separated on a 750 feet high resolution capillary gas chromatographic column. The mixture was found to be 90% of 1:1 ratio 7-methyl, and 8-methyl-heptadecane, and 10% of 6-methylheptadecane. An optical rotation of +2.5 {+-} 0.5 was obtained on a 5 mg of mixture.
Date: August 1, 1970
Creator: Han, Jerry & Calvin, Melvin.
Partner: UNT Libraries Government Documents Department

GRADED PLATE CARTRIDGE FOR PUREX A-TYPE EXTRACTION COLUMN

Description: Graded nonuniform cartridges are described which have plates with larger holes, greater free area, and/or greater plate spacing. These plates were developed and specified for the Purex Plant A-type columns. Use of the cartridges eliminated cyclic local flooding and increased the complete flooding frequency by 10 and 25 cycles/min at volume velocities of 530 and 1060 gal/hr/ sq ft, respectively, and exhibited satisfactory extraction efficiency over a wide range of frequencies and throughputs. (auth)
Date: March 20, 1957
Creator: Geier, R.G. & Hesson, G.M.
Partner: UNT Libraries Government Documents Department

PUREX PULSE COLUMN STUDIES-1960

Description: A series of pilot plant runs was conducted to define new cartridges for increasing the capacity in the Purex 1 Bx, 2A, lC and 2E columns and eliminate plastic cartridge failures in the HA column scrub section, the HS column and the 2A column. The most favorable designs are presented and data from the various runs are included. (J.R.D.)
Date: February 22, 1961
Creator: Jansen, G. & Richardson, G.L.
Partner: UNT Libraries Government Documents Department

PULSE PUMPING: A MEANS FOR TRANSFER OF PULSE COLUMN FLUIDS

Description: ABS>A pulse pump, which uses the energy of the pulser to pump fluids to or from a pulsed solvent extraction column, was steady in operation, and results were reproducible. Performance was satfsfactory with 2- and 12-in.-diam concatenated columns and with a 5-in.-diam straight column. (auth)
Date: November 1, 1957
Creator: Irvine, A.R.
Partner: UNT Libraries Government Documents Department

Analysis and Development of FACE Automatic Apparatus for Rapid Identification of Transuranium Isotopes

Description: A description of and operating manual for the FACE Automatic Apparatus has been written along with a documentation of the FACE machine operating program, to provide a user manual for the FACE Automatic Apparatus. In addition, FACE machine performance was investigated to improve transuranium throughput. Analysis of the causes of transuranium isotope loss was undertaken both chemical and radioactive. To lower radioactive loss, the dynamics of the most time consuming step of the FACE machine, the chromatographic column output droplet drying and flaming, in preparation of sample for alpha spectroscopy and counting, was investigated. A series of droplets were dried in an experimental apparatus demonstrating that droplets could be dried significantly faster through more intensie heating, enabling the FACE machine cycle to be shortened by 30-60 seconds. Proposals incorporating these ideas were provided for FACE machine development. The 66% chemical loss of product was analyzed and changes were proposed to reduce the radioisotopes product loss. An analysis of the chromatographic column was also provided. All operating steps in the FACE machine are described and analyzed to provide a complete guide, along with the proposals for machine improvement.
Date: September 1, 1978
Creator: Sebesta, E.H.
Partner: UNT Libraries Government Documents Department

THE DESIGN AND OPERATION OF PUREX PROCESS PULSE COLUMNS

Description: Information on the development of pulse columns for the Purex Process is presented in order to indicate qualitutively the performance attainable with improved cartridge designs, and to show some of the factors involved in scaling up pilot plant results to full plant scale. The pulse columns were designed to produce separated uranium and plutonium products decontaminated by at least a factor of 10>s7/sup /om fission products, with average uranium and plutonium losses of less than 0.2% per column and an overall yield of at least 99% of each product. The five types of behavior observed in pulse columns as a function of throughout rate and pulsing conditions are described. The effects of increasing frequency and throughput rate on pulse column efficiency are shown. The different types of perforated plates and packings investigated for Purex service are discussed. Short cuts, indicated by Purex development studies, that may be taken to provide a suituble column design with a minimum of pilot plant development are described. (M.C.G.)
Date: February 17, 1961
Creator: Richardson, G. L.
Partner: UNT Libraries Government Documents Department

Chemical Stability of Purex and Uranium Recovery Process Solvent

Description: The desirability of operating the Purex columns at higher temperatures, 50 to 70 deg C, made it necessary to obtain data on the stabiliyy of solverts at these higher temperatures. Since the present diluent will not be entirely safe at the upper temperature limit, a number of diluents with higher flash points were investigated. (J. E. D.)
Date: March 1, 1955
Creator: Moore, R. H.
Partner: UNT Libraries Government Documents Department

Uranium Hexafluoride Purification

Description: An experimental batch distillation column was used to purify UF/sub 6/ containing metal impurities. The degree of purification was determined by comparing the spectrographic analyses of the UF/sub 6/ distillate material with the original feed or pot material. Results are tabulated at 95% confidence limits. (auth)
Date: March 30, 1951
Creator: Allen, A. L. & Powell, E. W.
Partner: UNT Libraries Government Documents Department