Search Patents - Justia Patents Search (2024)

Arrangement for energy recovery in the pure-gas outlet of a centrifugal separator

Patent number: 3972698

Abstract: An arrangement for improved energy recovery in the pure gas outlet of a centrifugal separator which includes a cylindrical centrifugal chamber with a coaxial raw gas inlet at one end and a coaxial pure gas outlet at the other end and which is equipped with tangential auxiliary gas inlets in the region of the periphery of the centrifugal chamber inclined at an angle with respect to the raw gas outlet with a particle outlet concentrically surrounding the raw gas inlet, in which the pure gas outlet is conically flared and opens with its larger end into a cylindrical, closed ring chamber which includes a cover plate opposite the open outlet tube. A radially extending plate of a diameter smaller than that of the cylindrical ring chamber is attached to the larger, open end of the conical outlet tube and an aerodynamic body in the shape of a circular cone protrudes from the cover plate into the opened conical outlet tube.

Type: Grant

Filed: August 8, 1974

Date of Patent: August 3, 1976

Assignee: Siemens Aktiengesellschaft

Inventors: Heinrich Klein, Rudolf Pieper

Recovery of free aluminum from aluminum dross using plasma energy without use of a salt flux

Patent number: 4997476

Abstract: A process for recovering free aluminum and aluminum compounds such as aluminum oxide from aluminum dross in a rotary furnace heated with a plasma arc torch wherein air is preferably utilized as the arc gas is described. The use of the rotary furnace heated with plasma energy eliminates the need for a salt flux, providing a process which is ecologically safe and cost effective. A process of converting non-metallic aluminum compounds to substantially pure aluminum oxides by heating the compounds with a plasma torch operating with an oxidizing gas as the plasma torch arc gas is also described.

Type: Grant

Filed: September 18, 1989

Date of Patent: March 5, 1991

Assignee: Plasma Energy Corporation

Inventors: Richard D. Lindsay, Jack L. Dochterman, David L. Cheek, Robert L. Kirkland

Process for forming one or more substantially pure layers in substrate material using ion implantation

Patent number: 4976987

Abstract: A process is disclosed for forming a substantially pure layer of an implantable element in a substrate material by (a) selecting an implantable element and a substrate material to be implanted which, at the temperatures to be used, have limited mutual solubility in one another and do not form any intermediate phases with one another; (b) implanting a sufficient amount of the implantable element in the substrate material to permit formation of the desired substantially pure layer of the implantable element in the substrate material; and (c) annealing the implanted substrate material to form the desired layer. The annealing step may not be required if the desired layer was formed during the implantation.

Type: Grant

Filed: August 10, 1989

Date of Patent: December 11, 1990

Assignee: The United States of America as represented by the Department of Energy

Inventors: Ronald G. Musket, David W. Brown, Zuhair A. Munir

Pure phase ?/?' iron carbide catalyst for Fischer-Tropsch synthesis reaction, preparation method thereof and Fischer-Tropsch synthesis process

Patent number: 11471872

Abstract: The present disclosure relates to the field of Fischer-Tropsch synthesis reaction catalysts, and discloses a pure phase ?/?? iron carbide catalyst for Fischer-Tropsch synthesis reaction, a preparation method thereof and a Fischer-Tropsch synthesis process, wherein the method comprises the following steps: (1) subjecting the nanometer iron powder or a nano-powder iron compound capable of obtaining the nanometer iron powder through in-situ reduction and H2 to a surface purification treatment at the temperature of 250-510° C.; (2) pretreating the material obtained in the step (1) with H2 and CO at the temperature of 80-180° C., wherein the molar ratio of H2/CO is 1.2-2.8:1; (3) carrying out carbide preparation with the material obtained in the step (2), H2 and CO at the temperature of 180-280° C., wherein the molar ratio of H2/CO is 1.0-3.0:1.

Type: Grant

Filed: June 21, 2018

Date of Patent: October 18, 2022

Assignees: China Energy Investment Corporation Limited, National Institute of Clean-and-Low-Carbon Energy

Inventors: Peng Wang, Yijun Lv, Kui Zhagn, Fuguo Jiang, Zhuowu Men, Tao Wang, Qi Sun, Ping Miao

Process for the production of pure burnt lime

Patent number: 4548796

Abstract: The subject of the invention is a process for the production of pure burnt lime using gaseous fuels produced from energy carriers, in particular industrial wastes, wherein the energy carriers are gasified in an installation consisting of a fluidized bed and a cyclone, and the noxious substances released during the thermal decomposition are separated off by means of adsorbents, before they come into contact with the lime being burned.

Type: Grant

Filed: July 11, 1983

Date of Patent: October 22, 1985

Assignee: SKW Trostberg A.G.

Inventor: Peter Weber

Process and installation for the combined production of synthetic ammonia and pure hydrogen

Patent number: 5409684

Abstract: Process and apparatus for the combined production of ammonia synthesis gas and pure hydrogen. There is withdrawn (at 21) a flow of synthesis gas which is first treated in a permeation unit (24) with the return (at 28) of the non-permeated gas, while the permeate (32)is treated by adsorption (34) (35) (36), which permits producing (in 57) very pure hydrogen. The process has a high energy efficiency.

Type: Grant

Filed: June 7, 1993

Date of Patent: April 25, 1995

Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Inventor: Francois Fuentes

Process for forming one or more substantially pure layers in substrate material using ion implantation

Patent number: 5124174

Abstract: A process is disclosed for forming a substantially pure monocrystalline layer of an implantable element in a monocrystalline substrate material by (a) selecting an implantable element and a monocrystalline substrate material to be implanted which, at the temperatures to be used, have limited mutual solubility in one another and do not form any intermediate phases with one another; (b) implanting a sufficient amount of the implantable element in the substrate material to permit formation of the desired substantially pure layer of the implantable element in the substrate material; and (c) annealing the implanted substrate material to form the desired layer. The annealing step may not be required if the desired layer was formed during the implantation.Also disclosed is an article made by the process.

Type: Grant

Filed: December 11, 1990

Date of Patent: June 23, 1992

Assignee: The United States of America as represented by the United States Department of Energy

Inventors: Ronald G. Musket, David W. Brown, Zuhair A. Munir

Enantioselective synthesis of L-(-)-4- boronophenylalanine (L-BPA)

Patent number: 5157149

Abstract: A method of making substantially pure L-BPA is disclosed. The method includes the steps of reacting 4-bromobenzaldehyde with ethylene glycol to form 4-bromobenzaldehyde ethylene glycol acetal, sequentially reacting 4-bromobenzaldehyde ethyleneglycol acetal with Mg to produce the Grignard reagent and thereafter reacting with tributyl borate and then converting to an acid environment to form 4-boronobenzaldehyde, reacting 4-boronobenzaldehyde with diethanol amine to form 4-boronobenzaldehyde diethanolamine ester, condensing the 4-boronobenzaldehyde diethanolamine ester with 2-phenyl-2-oxazolin-5-one to form an azlactone, reacting the azlactone with an alkali metal hydroxide to form z-.alpha.-benzoylamino-4-boronocinnamic acid, asymmetrically hydrogenating the z-.alpha.

Type: Grant

Filed: June 4, 1991

Date of Patent: October 20, 1992

Assignee: The United States of America as represented by the United States Department of Energy

Inventor: Edward G. Samsel

Pure silver ohmic contacts to N- and P- type gallium arsenide materials

Patent number: 4564720

Abstract: Disclosed is an improved process for manufacturing gallium arsenide semiconductor devices having as its components an n-type gallium arsenide substrate layer and a p-type gallium arsenide diffused layer. The improved process comprises forming a pure silver ohmic contact to both the diffused layer and the substrate layer, wherein the n-type layer comprises a substantially low doping carrier concentration.

Type: Grant

Filed: May 13, 1983

Date of Patent: January 14, 1986

Assignee: The United States of America as represented by the United States Department of Energy

Inventor: Stephen J. Hogan

Compounds having energy transfer function and method for DNA base sequencing by using the same

Patent number: 6482938

Abstract: Disclosed are compounds having two kinds of reporters that can be a donor and an acceptor for energy transfer, for example, fluorescent groups, and having a 2′, 3′-dideoxyribonucleotide residue or a 3′-deoxyribonucleotide residue. These compounds can be used as terminators for the chain terminator method. The two kinds of reporters are arranged with a distance sufficient for causing energy transfer from the donor to the acceptor. Also disclosed are methods for determining DNA sequences based on the chain terminator method wherein the chain termination reaction is performed by using the above terminators. Also disclosed are compounds having two kinds of reporters that can be a donor and an acceptor for energy transfer, which can be used as a primer or an initiator in methods for determining DNA sequences utilizing the chain terminator method, and methods for determining DNA sequences utilizing the compounds.

Type: Grant

Filed: September 17, 1999

Date of Patent: November 19, 2002

Assignees: Wako Pure Chemical Industries, Ltd., The Institute of Physical & Chemical Research

Inventors: Yoshihide Hayashizaki, Takumi Tanaka

Energy transmission optical fiber

Patent number: 4893896

Abstract: The present invention relates to an energy transmission optical fiber which is a medium for transmitting high-energy beams within an ultraviolet range such as laser beams. Since an optical fiber according to the present invention comprises a core formed of pure silica and a clad having a graded index type distribution of refractive index and said clad is disposed on an interface between the core and the clad where many structural defects are generated, the transmission loss is not increased even after the transmission of high-energy beams for a long time. In addition, since the optical fiber according to the present invention comprises the core formed of pure silica having a high melting point, the high-energy beams can be transmitted without generating a melting fracture in the core.

Type: Grant

Filed: July 8, 1988

Date of Patent: January 16, 1990

Assignee: Mitsubishi Cable Industries, Ltd.

Inventors: Hiroyuki Tanaka, Takeshi Satake, Toshikazu Gozen, Toshiya Suzuki, Atsushi Utsumi

Process for producing silicon

Patent number: 4448651

Abstract: A process for producing silicon includes forming an alloy of copper and silicon and positioning the alloy in a dried, molten salt electrolyte to form a solid anode structure therein. An electrically conductive cathode is placed in the electrolyte for plating silicon thereon. The electrolyte is then purified to remove dissolved oxides. Finally, an electrical potential is applied between the anode and cathode in an amount sufficient to form substantially pure silicon on the cathode in the form of substantially dense, coherent deposits.

Type: Grant

Filed: June 10, 1982

Date of Patent: May 15, 1984

Assignee: The United States of America as represented by the United States Department of Energy

Inventors: Jerry M. Olson, Karen L. Carleton

Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene of submicron particle size

Patent number: 6310253

Abstract: A method is disclosed for the preparation of very small particle size, relatively pure 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). Particles of TATB prepared according to the disclosed method are of submicron size and have a surface area in the range from about 3.8 to 27 square meters per gram.

Type: Grant

Filed: May 22, 1985

Date of Patent: October 30, 2001

Assignee: The United States of America as represented by the Departmentof Energy

Inventors: Lester P. Rigdon, Gordon L. Moody, Raymond R. McGuire

RF Sputtering for preparing substantially pure amorphous silicon monohydride

Patent number: 4353788

Abstract: A process for controlling the dihydride and monohydride bond densities in hydrogenated amorphous silicon produced by reactive rf sputtering of an amorphous silicon target. There is provided a chamber with an amorphous silicon target and a substrate therein with the substrate and the target positioned such that when rf power is applied to the target the substrate is in contact with the sputtering plasma produced thereby. Hydrogen and argon are fed to the chamber and the pressure is reduced in the chamber to a value sufficient to maintain a sputtering plasma therein, and then rf power is applied to the silicon target to provide a power density in the range of from about 7 watts per square inch to about 22 watts per square inch to sputter an amorphous silicon hydride onto the substrate, the dihydride bond density decreasing with an increase in the rf power density. Substantially pure monohydride films may be produced.

Type: Grant

Filed: August 26, 1980

Date of Patent: October 12, 1982

Assignee: The United States of America as represented by the United States Department of Energy

Inventors: Frank R. Jeffrey, Howard R. Shanks

Method for heating a furnace

Patent number: 6283747

Abstract: The invention relates to a method for heating a furnace comprising at least one burner capable of operating on an oxidant the oxygen content of which can vary; in a first period (P1) the burner is supplied with practically pure oxygen so as to provide a large amount of energy for heating, in a second period (P2) the burner is supplied with an oxidant, the oxygen content of which can vary between about 100% and 21%, in a third period (P3), the burner is supplied with an oxidant, the oxygen content of which is minimal, and which corresponds to a pilot period which requires only a small amount of heating energy. This method makes it possible to optimize the use of the furnace according to the desired thermal performance and oxidant operating costs.

Type: Grant

Filed: September 20, 1999

Date of Patent: September 4, 2001

Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitationdes Procedes Georges Claude

Inventors: Thierry Legiret, Gérard Le Gouefflec, Thierry Borissoff, Olivier Charon

Optical emission spectroscopy qualitative and quantitative analysis method

Patent number: 8082111

Abstract: The invention relates to a method for the qualitative and quantitative analysis of samples by optical emission spectroscopy with laser excitation (18), using a database created on single-element aqueous solutions all having the same pure element concentration, this database containing, for each element, the wavelengths of the emission lines and their respective intensities.

Type: Grant

Filed: October 5, 2006

Date of Patent: December 20, 2011

Assignee: Commissariat a l'Energie Atomique et Aux Energies Alternatives

Inventor: Pascal Fichet

Method for forming diamondlike carbon coating

Patent number: 5192523

Abstract: A method of depositing a diamondlike carbon coating on a substrate. An ionized beam of pure methane or methane and hydrogen, and having an ion kinetic energy in the range of 500-1,000 eV is impinged on a substrate to deposit, thereon, a diamondlike carbon coating. Various substrates can be utilized, and various cleaning procedures are developed for use with the particular substrates to improve the adhesion of the diamondlike carbon coatings. The methane-hydrogen ratio and the operating pressure of the ionized gas can each be varied to vary the carbon-hydrogen ratio of the resulting diamondlike coating to thereby alter the characteristics of the coating.

Type: Grant

Filed: May 28, 1991

Date of Patent: March 9, 1993

Assignee: Universal Energy Systems, Inc.

Inventors: Richard L. Wu, Peter P. Pronko

Reduced-Emission Gasification and Oxidation of Hydrocarbon Materials for Liquid Fuel Production

Publication number: 20080275278

Abstract: A system and process are disclosed for the controlled combustion of a wide variety of hydrocarbon feedstocks to produce thermal energy, liquid fuels, and other valuable products with little or no emissions. The hydrocarbon feeds, such as coal and biomass, are first gasified and then oxidized in a two-chamber system/process using pure oxygen rather than ambient air. A portion of the intermediate gases generated in the system/process are sent to a Fischer-Tropsch synthesis process for conversion into diesel fuel and other desired liquid hydrocarbons. The remaining intermediate gases are circulated and recycled through each of the gasification/oxidation chambers in order to maximize energy production. The energy produced through the system/process is used to generate steam and produce power through conventional steam turbine technology.

Type: Application

Filed: May 5, 2008

Publication date: November 6, 2008

Inventor: Steve L. Clark

System for the suppression of noise and its variations for the detection of a pure signal in a measured noisy discrete signal

Patent number: 4942546

Abstract: A system applicable to the detection of particle radiation for the suppression of noise and its variations for the detection of a pure signal in a measured noisy discrete signal detects events appearing in a predetermined energy window. It carries out a count N.sub.2 for a time .DELTA.T.sub.s and a count N.sub.3 for a time .DELTA.T.sub.b, in which .DELTA.T.sub.b =q..DELTA.T.sub.s and q is a positive number, during which no event corresponding to the expected pure signal is present. It then evaluates the information supplied by counts N.sub.2, N.sub.3 for the chosen value of the coefficient q, or the associated false detection probability, by comparison with at least one information threshold I.sub.m, each threshold being associated with a predetermined false detection level. Comparison takes place indirectly as a function of the probability and uses tabulated values.

Type: Grant

Filed: September 19, 1988

Date of Patent: July 17, 1990

Assignee: Commissariat a l'Energie Atomique

Inventor: Michel Rambaut

Battery charger for cylindrical batteries

Patent number: D376128

Type: Grant

Filed: May 9, 1994

Date of Patent: December 3, 1996

Assignee: Pure Energy Battery Corporation

Inventor: Robert Flack