26 Matching Results

Search Results

Advanced search parameters have been applied.

Static Crucible Investigation of Corrosion and Mass-Transfer of Nickel in Molten Sodium Hydroxide With Various Additives

Description: Memorandum presenting an investigation of the effects of a number of additives on the phenomena of corrosion and mass transfer of nickel by molten sodium hydroxide in the neighborhood of 1500 degrees Fahrenheit by means of static crucible tests. The additives are classified by their effects, including being detrimental, inert, and beneficial. The additives found to reduce mass transfer were calcium hydride, sodium aluminate, and hydrogen.
Date: August 1953
Creator: Forestieri, Americo F. & Zelezny, William F.
Partner: UNT Libraries Government Documents Department

Thermal Analysis of Sodium Hydroxide Containing the Reaction Products of Sodium Hydroxide and Chromium Metal

Description: "Cooling curves were established for melts of sodium hydroxide that had been reacted with up to 20-percent-by-weight additions of chromium metal for varying times at 820 degrees C (1500 degrees F). For any given time at temperature, the depression of the freezing point of the hydroxide was increased with increasing chromium concentration. This depression diminished with increasing reaction time"(p. 1).
Date: October 1955
Creator: Wagner, G. D.
Partner: UNT Libraries Government Documents Department

The Mechanism of Thermal-Gradient Mass Transfer in the Sodium Hydroxide-Nickel System

Description: "Thermal-gradient mass transfer" was investigated in the molten sodium hydroxide-nickel system. Possible mechanisms (physical, electrochemical, and chemical) are discussed in terms of experimental and theoretical evidence. Experimental details are included in appendixes.
Date: June 20, 1957
Creator: May, Charles E.
Partner: UNT Libraries Government Documents Department

Coating Removal Waste Loss Reduction : Final Report, Production Test 221-B-8

Description: The following report covers a test with the objective to demonstrate that the plutonium and uranium losses associated with the aluminum jacket dissolution could be reduced by substituting a water wash for the 5 per cent nitric acid wash following the coating removal and that this change would not adversely effect the product yield of decontamination in subsequent process steps.
Date: June 25, 1951
Creator: Kirkendall, B. E.
Partner: UNT Libraries Government Documents Department

The solubility of sodium phosphate in sodium hydroxide solutions

Description: A report about how trisodium phosphate can be most satisfactorily removed from sodium hydroxide solutions at 40 percent sodium hydroxide concentration, or higher, the temperature being practically immaterial, or it can be removed antisfactorily from 15 to 30 per cont sodium hydroxide at 25°C
Date: 1950
Creator: Youtz, M. A.; Warren, F. A. & Bearse, A. E.
Partner: UNT Libraries Government Documents Department

Corrosion Resistance of Nickel Alloys in Molten Sodium Hydroxide

Description: Note presenting a study of the corrosion resistance of 11 nickel-base compositions to molten sodium hydroxide at 1500 and 1700 degrees Fahrenheit in order to find a container material for the caustic at these temperatures. Results are provided for the solid-solution alloys, nickel with mechanically dispersed second phase materials, and the precipitation-hardened alloy.
Date: January 1958
Creator: Probst, H. B.; May, C. E. & McHenry, Howard T.
Partner: UNT Libraries Government Documents Department

Preliminary investigation of corrosion by molten sodium hydroxide flowing in tubes of AISI 347 stainless steel, Inconel, and nickel having average outer-wall temperatures of 1500 F and a circumferential temperature gradient of 20 F

Description: Experiments were performed with an apparatus suitable for determining corrosive effects of hot flowing liquids on various container materials. The investigation was conducted with molten sodium hydroxide flowing at a velocity of 15 feet per second. Extensive corrosion and mass trans Extensive corrosion and mass transfer to regions of reduced temperature was observed.
Date: March 1952
Creator: Mosher, Don R. & Desmon, Leland G.
Partner: UNT Libraries Government Documents Department

Forced-convection heat-transfer characteristics of molten sodium hydroxide

Description: The forced-convection heat-transfer characteristics of sodium hydroxide were experimentally investigated. The heat-transfer data for heating fall slightly above the McAdams correlation line, and the heat-transfer data for cooling are fairly well represented by the McAdams correlation line.
Date: February 17, 1953
Creator: Grele, Milton D. & Gedeon, Louis
Partner: UNT Libraries Government Documents Department

The Use of Metallic Inhibitors for Eliminating Mass Transfer and Corrosion in Nickel and Nickel Alloys by Molten Sodium Hydroxide

Description: Memorandum presenting the effectiveness of chromium and aluminum as inhibitors for mass transfer and corrosion in nickel and nickel alloys by sodium hydroxide under free convection and at fluid velocities of 15 feet per second. The addition of 1 percent by weight of 325-mesh chromium powder to the caustic essentially eliminated the transfer for 50 hours at 1500 degrees Fahrenheit with a temperature difference of 20 degrees Fahrenheit and a flow of 15 feet per second. Results regarding the static test, the toroid test, and a description of the chemical reactions are provided.
Date: February 1955
Creator: Forestieri, Americo F. & Lad, Robert A.
Partner: UNT Libraries Government Documents Department

Effect of Environments of Sodium Hydroxide, Air, and Argon on the Stress-Rupture Properties of Nickel at 1500 Degrees F

Description: Note presenting the stress-rupture properties of commercially pure nickel at 1500 degrees Fahrenheit as determined for its application as a container material for molten sodium hydroxide. Stress-rupture tests of L-nickel tubes containing sodium hydroxide were run with atmospheres of air or argon external to the tubes. Sodium hydroxide was found to have little effect on the stress-rupture strength of nickel tubes tested in argon at 1500 degrees Fahrenheit for times up to 200 hours.
Date: January 1958
Creator: McHenry, Howard T. & Probst, H. B.
Partner: UNT Libraries Government Documents Department

Effects of Additives on Corrosion and Mass Transfer in Sodium Hydroxide - Nickel Systems Under Free-Convection Conditions

Description: Memorandum presenting a study of the effect of additives on the extent of corrosion and mass transfer in sodium hydroxide - "L" nickel systems. The extent of corrosion and mass transfer was determined by a measurement of the weight change of a specimen in the hot zone, and by metallographic examination of the specimen cross section. Results regarding the reproducibility, appearance of specimens, and additives having a detrimental effect, no effect, or a beneficial effect are provided.
Date: August 2, 1954
Creator: Forestieri, Americo F.
Partner: UNT Libraries Government Documents Department

The Sodium Hydroxide Reactor: Effect of Reactor Variables on Criticality and Fuel-Element Temperature Requirements for Subsonic and Supersonic Aircraft Nuclear Propulsion

Description: Report presenting results of two-group criticality calculations for sodium-hydroxide-cooled, moderated, and reflected reactors for various concentrations and compositions of reactor fuel-element structural material. Based on turbojet-engine cycle operating conditions optimized for minimum airplane gross weight, the maximum reactor fuel-element and coolant temperatures are related to the reactor heat release and airplane gross weight for a range of reactor heat-transfer variables.
Date: February 10, 1953
Creator: Bogart, Donald & Valerino, Michael F.
Partner: UNT Libraries Government Documents Department

The Mechanism of Thermal-Gradient Mass Transfer in the Sodium Hydroxide-Nickel System

Description: Note presenting an investigation of thermal gradient mass transfer in the molten sodium hydroxide-nickel system. Possible mechanisms, including physical, electrochemical, and chemical, are discussed in terms of experimental and theoretical evidence. Kinetic equations are theoretically derived considering separately the follwing three factors as controlling overall rate of mass transfer: the chemical reaction, the diffusion process, and the forced circulation.
Date: September 1957
Creator: May, Charles E.
Partner: UNT Libraries Government Documents Department

U.S. DOE Industrial Technologies Program – Technology Delivery Plant-Wide Assessment at PPG Industries, Natrium, WV

Description: PPG and West Virginia University performed a plantwide energy assessment at the PPG’s Natrium, WV chemical plant, an energy-intensive manufacturing facility producing chlor-alkali and related products. Implementation of all the assessment recommendations contained in this report could reduce plant energy consumption by 8.7%, saving an estimated 10,023,192 kWh/yr in electricity, 6,113 MM Btu/yr in Natural Gas, 401,156 M lb/yr in steam and 23,494 tons/yr in coal and reduce carbon dioxide emissions by 241 mm lb/yr. The total cost savings would amount to approximately $2.9 mm/yr. Projects being actively implemented will save $1.7 mm/yr; the remainder are undergoing more detailed engineering study.
Date: September 28, 2007
Creator: Lester, Stephen R.; Wiethe, Jeff; Green, Russell; Guice, Christina; Gopalakrishnan, Bhaskaran & Turton, Richard
Partner: UNT Libraries Government Documents Department

Reducing VOC Press Emission from OSB Manufacturing

Description: Current regulations require industry to meet air emission standards with regard to particulates, volatile organic compounds (VOCs), hazardous air pollutants (HAPs) and other gases. One of many industries that will be affected by the new regulations is the wood composites industry. This industry generates VOCs, HAPs, and particulates mainly during the drying and pressing of wood. Current air treatment technologies for the industry are expensive to install and operate. As regulations become more stringent, treatment technologies will need to become more efficient and cost effective. The overall objective of this study is to evaluate the use of process conditions and chemical additives to reduce VOC/HAPs in air emitted from presses and dryers during the production of oriented strand board.
Date: December 31, 2001
Creator: McGinnis, Dr. Gary D.; WIlliams, Laura S.; Monte, Amy E.; Niemi, Jagdish Rughani: Brett A. & Flicker, Thomas M.
Partner: UNT Libraries Government Documents Department