Patents Examined by Bradley Garris
  • Patent number: 4465558
    Abstract: Total load distribution of coke guide cars can be substantially evenly effected in accordance with the present invention which comprises a pair of parallel beams whose inner portions are positioned under and perpendicular to upper beams of the guide car and outer portions are bent down at a slant and extend to a third rail laid outside of a quencher track, a plurality of girders mounted between and spanning the horizontal portions of the parallel beams, plural pairs of rails mounted under the girders and adapted to hang main instruments of the guide car, and pairs of fitting plates hung from the upper beams and to which the inner portions of the parallel beams are jointed by means of joint pins.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: August 14, 1984
    Assignee: Koritsu Machine Industries Limited
    Inventor: Yoshiteru Kitano
  • Patent number: 4465557
    Abstract: An apparatus for transferring between chambers of a coke oven charging gases which develop during the charging of the chambers, while preventing the escape of the gases to the surrounding environment, includes first and second covers mounted for movement between first positions closing charging openings through an oven roof and second positions uncovering such openings. Ducts surround the peripheries of the first and second openings, such ducts being filled with a displaceable sealing medium. First and second housings form respective first and second compartments enclosing the first and second covers, respectively, at all positions thereof. The first and second covers have apron members extending into the displaceable sealing medium in the respective ducts when the covers are in the first positions thereof. The housings have at lower portions thereof seals for sealing the compartments from the exterior.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: August 14, 1984
    Assignees: Didier Engineering GmbH, Voest-Alpine Aktiengesellschaft
    Inventors: Manfred Blase, Klaus Dahl, Manfred Galow, Johann Zendron
  • Patent number: 4465556
    Abstract: A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: August 14, 1984
    Assignee: American Carbons, Inc.
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4464229
    Abstract: In a process for producing an acrylic or methacrylic ester by esterifying acrylic or methacrylic acid with a lower aliphatic alcohol having 1 to 3 carbon atoms in the presence of an acidic catalyst, the improvement which comprises(1) distilling the resulting esterification reaction mixture while feeding the acrylic or methacrylic ester into a distillation column from outside the system, thereby to yield as a distillate a mixture composed of the acrylic or methacrylic ester, water and the unreacted alcohol and being substantially free from acrylic or methacrylic acid, and (2) recycling the residue in the distillation column, from which the ester and water formed have been substantially removed, to the esterification reaction in such a proportion that the mole ratio of acrylic or methacrylic acid to the alcohol in the entire starting materials fed to the esterification reaction is kept at 1:0.5-1.0.
    Type: Grant
    Filed: June 29, 1982
    Date of Patent: August 7, 1984
    Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.
    Inventors: Takahisa Sato, Sumio Nakashima, Masao Baba
  • Patent number: 4462870
    Abstract: Particulate carbon is reactivated by heating it for an effective reactivation time at a reactivation temperature in a stationary vertical annular heating zone of an unlined metal kiln.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: July 31, 1984
    Assignee: Custom Equipment Corporation
    Inventors: Robert A. Wilson, J. Leroy Peterson
  • Patent number: 4462869
    Abstract: A method and apparatus for conveying preheated coal particles to a coking chamber through an enclosed pipeline by means of a pressurized inert carrier gas, wherein the coal particles are charged into the top of the coking chamber through a portion of the pipeline wherein at least the end of which is disposed vertically or not more than 30.degree. from vertical. The advantages of the top charging technique include one or more of the following: reduced carryover of fine coal during charging, increased density of the charge of coal to be coked, reduced weight of carrier gas per unit weight of coal, improved uniformity of coal bed level throughout the coking chamber, and reduced carbon deposits on surfaces of the chamber above the coal charge and in the gas off-takes.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: July 31, 1984
    Assignee: Krupp Wilputte Corporation
    Inventors: Rufus F. Davis, Jr., Donald G. Marting, Harvey S. Auvil
  • Patent number: 4461674
    Abstract: An oil shale retorting method and apparatus moves a bed of oil bearing shale particles along a generally horizontal path and passes through the bed at spaced points a plurality of discrete nonoxidizing gas streams heated to different oil educting temperatures to vaporize and educe different weight fractions of oil from the kerogen in the shale into the gas streams. Preferably the heated gas streams are also passed through the moving shale bed upstream from distillation of the volatile oil constituents to preheat the shale particles and condense the educted oils which become suspended as stable mists and are mechanically separated from the gas streams. Heat energy is preferably removed from the spent shale particles of the moving bed by burning them with combustion air downstream from the retorting sites, and such heat energy is transferred to the nonoxidizing streams to raise them to different oil educting temperatures before they are passed through the moving bed to educe oil from the shale particles.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: July 24, 1984
    Assignee: Allis-Chalmers Corporation
    Inventors: Bobby P. Faulkner, Michael H. Weinecke
  • Patent number: 4461673
    Abstract: An apparatus and process are provided for depressurizing, cooling, and, optionally, moisturizing retorted oil shale produced in an oil shale retort operated at superatmospheric pressure. Hot retorted oil shale particles are gravitated from the retort and into an elongated, multichambered vessel. In the upper chambers of the vessel the particles are partially cooled by contact with a controlled flow of liquid water. The water, having been totally vaporized, is removed from the particles at a rate which prevents the substantial flow of gases between the vessel and the retort. In the lower chambers of the vessel, the particles are first stripped of entrained hydrocarbon gas by gravitating through a countercurrently flowing stream of stripping gas and then brought to ambient pressure by gravitating through a long, narrow seal leg. Optionally, the depressurized and partially cooled particles are then further cooled and moisturized by admixing with a controlled flow of liquid water.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: July 24, 1984
    Assignee: Union Oil Company of California
    Inventors: Roland F. Deering, Roland O. Dhondt, deceased, John E. Hines
  • Patent number: 4460437
    Abstract: A larry car (3) for transporting a charge of pre-heated coal along the top of a battery of coke ovens, from a storage installation including a group of metering bins (1) at one or more filling stations above the battery, to a corresponding group of charge holes for the oven chamber to be charged, the car including a corresponding group of coal transfer hoppers (4) each having valved inlet and discharge apertures (5,21), a sealed connection (2) between each metering bin and transfer hopper, an inert gas reservoir (10) connectable via a valved manifold (13,14) to each transfer hopper, a valved connection (7,8,9) for charging the reservoir, and a valved connection (15,16,17) to permit dusty gas to be displaced into the storage bunkers, and control means for the various valved connections to maintain continuous isolation of the interior of each transfer hopper from the atmosphere, to permit dust-laden gases to escape into the storage installation, and to cause inert medium to displace coal discharged from the tra
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: July 17, 1984
    Assignee: Otto-Simon Carves Limited
    Inventor: David B. Corry
  • Patent number: 4456505
    Abstract: In a coking oven with a horizontal chamber the chamber is provided with a filling hole having a cylindrical portion with the diameter D and a reduced portion downwardly extending therefrom into the chamber over the height H. The ratio between D and H.ltoreq.1.5.
    Type: Grant
    Filed: October 8, 1982
    Date of Patent: June 26, 1984
    Assignee: Krupp-Koppers GmbH
    Inventor: Wilhelm Jakobi
  • Patent number: 4455282
    Abstract: A furnace for heating particulate material comprises an air-tight shell and a heat insulating lining which define a hollow shaft. Electrical resistance heating elements spaced along the length of the hollow shaft adjacent the insulating lining. A baffle system supported within the shaft promotes heating by radiation and convection. The baffle system has side supports vertically positioned within the shaft, a plurality of inner trays each defining pairs of sloping surfaces joined at a ridge, and a plurality of outer trays each defining a sloping surface. The outer trays are arranged to receive material falling from an inner tray thereabove and to deliver material to the ridge of an inner tray therebelow.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: June 19, 1984
    Inventors: Gerald E. Marquess, David J. Nell
  • Patent number: 4452670
    Abstract: Coal fines developed from the processing of coal through a preheating system are accumulated in a secondary cyclone system. The coal fines, at an elevated temperature, are mixed with a hydrocarbon organic binder and compressed into larger particles of sufficient structural integrity and mass to be fed directly through pneumatic pressure coke oven coal charging lines without significant size reduction, resulting in the elimination of fine coal build-up in one coke oven standpipes and charging mains as well as overloading of the charging liquor system.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: June 5, 1984
    Assignee: Koppers Company, Inc.
    Inventors: Joseph E. Kovacic, Michael Perch, Bernard R. Kuchta
  • Patent number: 4450046
    Abstract: A method for increasing the wet bulk density of coking coal charges for code ovens which charges contain at least about 6 and as much as 13 weight percent moisture, to an optimum level of between about 47 and 50 pounds per cubic foot (753 to 801 kg per cubic meter) and for controlling and maintaining the bulk density at such optimum levels, the method including:(a) forming a 5 to 20 weight percent aqueous dispersion of a surfactant having a desired viscosity, and(b) applying a quantity of the aqueous dispersion to a quantity of coal equivalent to between about 0.5 and 2.5 pounds (0.227 and 1.135 kg) of surfactant per ton (907.2 kg) of coal,the surfactant being an alkylphenoxypoly (ethyleneoxy) ethanol having a general formula: ##STR1## where R is an alkyl group having between about 8 and 12 carbon atoms, andn is an integer between 2 and 30,and is characterized by an HLB number in the range of about 4 and 18.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: May 22, 1984
    Assignee: Bethlehem Steel Corp.
    Inventors: David A. Rice, Robert R. Greenbaum, Thomas J. Conarty, Jr.
  • Patent number: 4448709
    Abstract: This invention is concerned with an apparatus for concentrating a proppant fluid slurry. The concentration is carried out in a casing containing an axial elongated screen. Stationary angled vanes direct the slurry in a helical path in the space between the casing and the elongated tubular screen to avoid the problems of rotating members. The concentrating zone thus provided communicates with a mixing zone where baffles provide restricted flow between the edges of the baffles and the interior of the casing to give a mixing action, disperse slugs of slurry, and to avoid back flow of gas. The baffles are advantageously of resilient material. The mixing zone then leads to a foaming zone, followed by the outlet. It is advantageous to have inlet, concentrating zone, mixing zone, foaming zone and outlet for the foamed slurry in axial alignment and without interruptions so as to give a straight through flow.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: May 15, 1984
    Inventor: Ronald S. Bullen
  • Patent number: 4448641
    Abstract: A coke oven handling apparatus for use with a coke oven having a battery of horizontally arranged side by side coke ovens with a quenching car trackway for a coke quenching car disposed alongside the battery outwardly of a coke cake guide car which is also movable along the ovens of the battery on a guide car trackway comprises a stationary closed gas exhaust system which has an exhaust connection adjacent the quenching car. The support structure provides a support for a hood and a trackway for the hood adjacent the quenching car trackway and a structure is supported upon and movable along the hood support and trackway structure. The hood structure includes a first hood portion of vertically deep size which is adapted to be positioned adjacent a coke cake guide car in a position to overlie coke being pushed through the guide car into the quenching car.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: May 15, 1984
    Assignee: Firma Carl Still GmbH & Co. K.G.
    Inventor: August Lucas
  • Patent number: 4448642
    Abstract: A coke oven handling apparatus, for use with a coke oven having a battery of horizontally arranged side by side coke ovens with a quenching car trackway for a coke quenching car disposed alongside the battery outwardly of a coke cake guide car which is also movable along the ovens of the battery on a guide car trackway, comprises a stationary closed gas exhaust system which has an exhaust connection adjacent the quenching car. The support structure provides a support for a hood and a trackway for the hood adjacent the quenching car trackway and a structure is supported upon and movable along the hood support and trackway structure. The hood structure includes a first hood portion of vertically deep size which is adapted to be positioned adjacent a coke cake guide car in a position to overlie coke being pushed through the guide car into the quenching car.
    Type: Grant
    Filed: April 5, 1983
    Date of Patent: May 15, 1984
    Assignee: Firma Carl Still GmbH & Co. K.G.
    Inventor: August Lucas
  • Patent number: 4448752
    Abstract: In a distributing device for sucking a desired amount of a sample liquid in a sample vessel and discharging the thus sucked sample liquid into a reaction vessel, a probe for sucking and discharging the liquid is connected to a syringe driven by a pulse motor. A photoelectric detector is provided for detecting whether the sample liquid is present or not up to a predetermined level in the sample vessel and an actual amount of the sample liquid aspirated by the syringe is detected by a counter which counts clock pulses during the aspirating operation. When the liquid level descends lower than the predetermined level, the counting operation is stopped. The actual amount of the aspirated liquid in the probe is compared with a desired amount stored in a memory. When the actual amount of the sucked liquid is smaller than the desired value, an alarm is produced.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: May 15, 1984
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Taiichi Banno, Ryo Fujimori, Hiroshi Takekawa, Kazuo Hijikata
  • Patent number: 4447297
    Abstract: The present invention is directed to a combined fluidized bed retorting and combustion system particularly useful for extracting energy values from oil shale. The oil-shale retort and combustor are disposed side-by-side and in registry with one another through passageways in a partition therebetween. The passageways in the partition are submerged below the top of the respective fluid beds to preclude admixing or the product gases from the two chambers. The solid oil shale or bed material is transported through the chambers by inclining or slanting the fluidizing medium distributor so that the solid bed material, when fluidized, moves in the direction of the downward slope of the distributor.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: May 8, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Jer-Yu Shang, John E. Notestein, Joseph S. Mei, Li-Wen Zeng
  • Patent number: 4446120
    Abstract: A process for preparing high purity silicon metal from Na.sub.2 SiF.sub.6 (sodium fluosilicate). The sodium fluosilicate is heated to decomposition temperature to form NaF, which retains most of the impurities, and gaseous SiF.sub.4. The SiF.sub.4 is then reduced by the bomb reduction method using a reductant having a low packing density.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: May 1, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Frederick A. Schmidt, David Rehbein, Premo Chiotti
  • Patent number: 4445977
    Abstract: An offset expansion joint and method of installing the same in a repaired or rebuilt furnace, such as a coke oven or the like, comprises at least two segments of ceramic fiber spaced laterally from one another and separated by silica bricks and a barrier of silica mortar which extends along an edge of each segment and along an edge of each of the bricks by which the segments are spaced, the silica mortar having the ability to set up when exposed to about 2200.degree. F. to prevent passage of gas through the expansion joint in the area of the horizontal flue of the coke oven.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: May 1, 1984
    Assignee: Furnco Construction Corporation
    Inventor: Lee K. Husher