31 Matching Results

Search Results

Results: 1 - 24 next
open access

Improved method for removing metal vapor from gas streams

Description: This invention relates to a process for gas cleanup to remove one or more metallic contaminants present as vapor. More particularly, the invention relates to a gas cleanup process using mass transfer to control the saturation levels such that essentially no particulates are formed, and the vapor condenses on the gas passage surfaces. It addresses the need to cleanup an inert gas contaminated with cadmium which may escape from the electrochemical processing of Integral Fast Reactor (IFR) fuel in… more
Date: September 19, 1994
Creator: Ahluwalia, R. K. & Im, K. H.
Partner: UNT Libraries Government Documents Department
open access

Beam position monitor

Description: An apparatus for determining the position of an x-ray beam relative to a desired beam axis where the apparatus is positioned along the beam path so that a thin metal foil target intersects the x-ray beam generating fluorescent radiation. A PIN diode array is positioned so that a portion of the fluorescent radiation is intercepted by the array resulting in a series of electrical signals from the PIN diodes making up the array. The signals are then analyzed and the position of the x-ray beam is d… more
Date: September 21, 2000
Creator: Alkire, Randy W.; Rosenbaum, Gerold & Evans, Gwyndaf
Partner: UNT Libraries Government Documents Department
open access

Calcination and solid state reaction of ceramic-forming components to provide single-phase ceramic product having fine particle size

Description: The invention consists of an improved method for the preparation of single phase, fine grained ceramic materials from precursor powder mixtures where at least one of the components of the mixture is an alkali earth carbonate. The process consists of heating the precursor powders in a partial vacuum under flowing oxygen and under conditions where the partial pressure of CO{sub 2} evolved during the calcination is kept to a very low level relative to the oxygen. The process has been found particu… more
Date: September 28, 1990
Creator: Balachandran, U.; Poeppel, R. B.; Emerson, J. E. & Johnson, S. A.
Partner: UNT Libraries Government Documents Department
open access

A method to remove Ammonia using a Proton-Conducting Ceramic Membrane

Description: An apparatus and method for decomposing NH{sub 3}. A fluid containing NH{sub 3} is passed in contact with a tubular membrane that is a homogeneous mixture of a ceramic and a first metal, with the ceramic being selected from one or more of a cerate having the formula of M' Ce{sub 1-x} M''O{sub 3-{delta}}, zirconates having the formula M'Zr{sub 1-x} M''3-{delta}, stannates having the formula M'Sn{sub 1-x}M''O{sub 3}-{delta}, where M' is a group IIA metal, M'' is a dopant metal of one or more of C… more
Date: September 22, 1999
Creator: Balachandran, Uthamalingam & Bose, Arun C.
Partner: UNT Libraries Government Documents Department
open access

Method of improving catalytic activity and catalytics produced thereby

Description: A process for dissociating H{sub 2}S in a gaseous feed using an improved catalytic material is disclosed in which the feed is contacted at a temperature of at least about 275C with a catalyst of rutile nanocrystalline titania having grain sizes in the range of from about 1 to about 100 manometers. Other transition metal catalysts are disclosed, each of nanocrystalline material with grain sizes in the 1--100 nm range. This invention may have application to vehicle emissions control (three-way ca… more
Date: September 23, 1993
Creator: Beck, D. D. & Siegel, R. W.
Partner: UNT Libraries Government Documents Department
open access

Imaging Fourier transform spectrometer

Description: This invention is comprised of an imaging Fourier transform spectrometer having a Fourier transform infrared spectrometer providing a series of images to a focal plane array camera. The focal plane array camera is clocked to a multiple of zero crossing occurrences as caused by a moving mirror of the Fourier transform infrared spectrometer and as detected by a laser detector such that the frame capture rate of the focal plane array camera corresponds to a multiple of the zero crossing rate of th… more
Date: September 13, 1993
Creator: Bennett, C. L.
Partner: UNT Libraries Government Documents Department
open access

Simplified Configuration for the Combustor of an oil Burner using a low Pressure, high flow air-atomizing Nozzle

Description: The invention relates to clean burning of fuel oil with air. More specifically, to a fuel burning combustion head using a low-pressure, high air flow atomizing nozzle so that there will be a complete combustion oil resulting in a minimum emission of pollutants. The inventors have devised a fuel burner that uses a low pressure air atomizing nozzle. The improved fuel burner does not result in the use of additional compressors or the introduction of pressurized gases downstream, nor does it requir… more
Date: September 28, 1998
Creator: Butcher, Thomas; Celebi, Yusuf & Fisher, Leonard
Partner: UNT Libraries Government Documents Department
open access

In-situ method to remove iron and other metals from Solution in Groundwater down Gradient from Permeable Reactive Barrier

Description: This invention is directed to a process for treating the flow of anaerobic groundwater through an aquifer with a primary treatment media, preferably iron, and then passing the treated groundwater through a second porous media though which an oxygenated gas is passed in order to oxygenate the dissolved primary treatment material and convert it into an insoluble material thereby removing the dissolved primary treatment material from the groundwater.
Date: September 22, 1999
Creator: Carpenter, Clay E. & Morrison, Stanley J.
Partner: UNT Libraries Government Documents Department
open access

Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles

Description: A nondestructive method, and associated apparatus, are provided for determining the grain flow of the grains in a convex curved, textured polycrystalline surface. The convex, curved surface of a polycrystalline article is aligned in a horizontal x-ray diffractometer and a monochromatic, converging x-ray beam is directed onto the curved surface of the polycrystalline article so that the converging x-ray beam is diffracted by crystallographic planes of the grains in the polycrystalline article. T… more
Date: September 8, 1993
Creator: Carpenter, D.A.
Partner: UNT Libraries Government Documents Department
open access

Simulation of pyroshock environments using a tunable resonant fixture

Description: Disclosed are a method and apparatus for simulating pyrotechnic shock for the purpose of qualifying electronic components for use in weapons, satellite, and aerospace applications. According to the invention, a single resonant bar fixture has an adjustable resonant frequency in order to exhibit a desired shock response spectrum upon mechanical impact. The invention eliminates the need for availability of a large number of different fixtures, capable of exhibiting a range of shock response chara… more
Date: September 30, 1993
Creator: Davie, N. T.
Partner: UNT Libraries Government Documents Department
open access

Cryogenic Homogenization and Sampling of Heterogeneous Multi-Phase Feedstock

Description: An apparatus and process for producing a homogeneous analytical sample from a heterogeneous feedstock by: providing the mixed feedstock, reducing the temperature of the feedstock to a temperature below a critical temperature, reducing the size of the feedstock components, blending the reduced size feedstock to form a homogeneous mixture; and obtaining a representative sample of the homogeneous mixture. The size reduction and blending steps are performed at temperatures below the critical temper… more
Date: September 21, 1999
Creator: Doyle, Glenn M.; Ideker, Virgene D. & Siegwarth, James D.
Partner: UNT Libraries Government Documents Department
open access

Containment canister for capturing hazardous waste debris during piping modifications

Description: The present invention relates to a containment canister for capturing hazardous waste debris during modifications to gloveboxes, or other radiological or biochemical hoods (generally termed gloveboxes therein), that require drilling and welding operations. Examples of such modifications include penetrations for pipe, thermowells, etc. In particular, the present invention relates to an improved containment canister that eliminates the need for costly containment huts and additional man power whi… more
Date: September 30, 2001
Creator: Dozier, Stanley B.
Partner: UNT Libraries Government Documents Department
open access

Corrosion-resistant iridium-platinum anode material for high polarization application in corrosive acids

Description: The present invention relates to highly corrosion resistant components for use in an electrochemical cell. Specifically, these components are resistant to corrosion under very extreme conditions such as exposure to aqua regia in the presence of a constant current density of 100mA/m{sup 2}. The components are comprised of an iridium-platinum alloy that comprises less than 30% iridium. In a preferred embodiment of the present invention, the iridium-platinum alloy comprises 15-20% iridium. In anot… more
Date: September 8, 1993
Creator: Farmer, J.; Summers, L. & Lewis, P.
Partner: UNT Libraries Government Documents Department
open access

Apparatus and method for two-stage oxidation of wastes

Description: An apparatus and method for oxidizing wastes in a two-stage process. The apparatus includes an oxidation device, a gas-liquid contacting column and an electrocell. In the first stage of the process, wastes are heated in the presence of air to partially oxidize the wastes. The heated wastes produce an off-gas stream containing oxidizable materials. In the second stage, the off-gas stream is cooled and flowed through the contacting column, where the off-gas stream is contacted with an aqueous aci… more
Date: September 28, 1993
Creator: Fleischman, S. D.
Partner: UNT Libraries Government Documents Department
open access

Continuous air Agglomeration Method for high Carbon fly ash Beneficiation

Description: The carbon and mineral components of fly ash are effectively separated by a continuous air agglomeration method, resulting in a substantially carbon-free mineral stream and a highly concentrated carbon product. The method involves mixing the fly ash comprised of carbon and inorganic mineral matter with a liquid hydrocarbon to form a slurry, contacting the slurry with an aqueous solution, dispersing the hydrocarbon slurry into small droplets within the aqueous solution by mechanical mixing and/o… more
Date: September 29, 1998
Creator: Gray, McMahan L.; Champagne, Kenneth J. & Finseth, Dennis H.
Partner: UNT Libraries Government Documents Department
open access

Hydrogen gettering packing material and process for making same

Description: A hydrogen gettering system for a sealed container is disclosed comprising packing material for use within the sealed container, and a coating film containing hydrogen gettering material on at least a portion of the surface of such packing material. The coating film containing the hydrogen gettering material comprises a mixture of one or more organic materials capable of reacting with hydrogen and one or more catalysts capable of catalyzing the reaction of hydrogen with such one or more organic… more
Date: September 9, 1999
Creator: LeMay, James D.; Thompson, Lisa M.; Smith, Henry Michael & Schicker, James R.
Partner: UNT Libraries Government Documents Department
open access

Process to Accomplish Autothermal or Steam Reforming Via a Reciprocating Compression Device

Description: The invention provides a method and apparatus for producing a synthesis gas from a variety of hydrocarbons. The apparatus (device) consists of a semi-batch, non-constant volume reactor to generate a synthesis gas. While the apparatus feeds mixtures of air, steam, and hydrocarbons into a cylinder where work is performed on the fluid by a piston to adiabatically raise its temperature without heat transfer from an external source.
Date: September 21, 2004
Creator: Lyons, David K.; James, Robert; Berry, David A. & Gardern, Todd
Partner: UNT Libraries Government Documents Department
open access

Device for calibrating a radiation detector system

Description: The present invention relates to a device for calibrating a radiation detector system that is used for measuring the radionuclide intake of those exposed to radioactive materials. In particular, the present invention relates to a device that simulates a human chest and lungs with a modicum of internal radiation for use in calibrating radiation detectors.
Date: September 23, 1993
Creator: McFee, M. C.; Kirkham, T. J. & Johnson, T. H.
Partner: UNT Libraries Government Documents Department
open access

Aerogel Fingerprint Media

Description: A fingerprint medium which is made of an aerogel having a predetermined density. The fingerprint medium may have a midrange density for forming plates or may be crushed forming a powder. The fingerprint medium may further include at least one of a metal and metal oxide to enhance characteristics desirable in a fingerprint medium.
Date: September 21, 1999
Creator: Miller, Fred S. & Andresen, Brian D.
Partner: UNT Libraries Government Documents Department
open access

High current pulse transmission cable

Description: This invention is comprised of a transmission cable for carrying high current pulses in which an even numbered plurality of electrical conductors surrounds a central ground conductor. Each electrical conductor is connected so that it at any instant in time it will carry current of opposite polarity to the polarity carried by adjacent conductors. This arrangement cancels practically all of the external fields generated by current in the conductors.
Date: September 28, 1990
Creator: Parsons, W. M.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen