Patents Examined by Roger F. Phillips
  • Patent number: 4314889
    Abstract: A gas-transfer tube assembly is used to extract charging gases through an orifice in the roof of one coke oven chamber and discharge the gases into an adjacent second coke oven chamber through an orifice in the roof thereof. Each orifice has a riser with an annular water seal normally closed by a removable cover. The gas-transfer tube assembly includes downwardly-extending tubular end portions with elbow parts that are selectively connected together by a straight mid-section used to change the spacing between the downwardly-extending end portions. The gas-transfer tube assembly is supported for vertical movement on a car that runs along a monorail supported by buckstays. The car is stabilized by rollers at the top of the car to engage a rail.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: February 9, 1982
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Hans-Jurgen Kwasnik, Hans-Gunter Piduch
  • Patent number: 4312712
    Abstract: A coke car is moved along a battery of coke ovens to a location for receiving coke from an oven chamber while the car is stationary and for moving to beneath a quenching tower. The coke car includes a generally square box-like container having side walls sealed with a floor that is pivoted about a horizontal axis to bear against seal members. The horizontal axis is spaced from the wall of the car adjacent the coke bench by a distance less than the distance between the axis and the wall of the car adjacent the oven platform. The seal members are disposed on the top of part of the floor which moves away from a side wall during pivotal movement and seal members are disposed on the bottom of a floor part which moves upwardly along a wall of the container during pivotal movement.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: January 26, 1982
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Hans-Jurgen Kwasnik, Hans-Gunter Piduch
  • Patent number: 4312713
    Abstract: An improved duct system is provided for collecting gases from the coke side of a battery of coke-oven chambers with vertical flues in which a coke guide is mounted for movement along the ovens on rails, in which the coke transport car is mounted for movement on rails along the ovens adjacent the coke guide, and in which a stationary main collection duct with a belt covered slot is provided adjacent the transport car rails. An extraction hood is provided for covering the transport car and connecting the discharge end of the coke guide with the transport car. The hood has an integral connecting line adapted to be connected between a gas collection duct above the coke guide and a gas transfer device movable on the main duct under the belt for directing the gases into the main duct. Also integral with the extraction hood are two gas outlet ducts, one on each side of the connecting line, separate from the connecting line, for connecting the extraction hood to the gas transfer device.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: January 26, 1982
    Assignee: Hartung, Kuhn & Co. Maschinenfabrik GmbH
    Inventors: Georg Mayer, Horst Schroter, Helmut Laux
  • Patent number: 4309253
    Abstract: To increase the temperature at which a tar separator operates which separates tar from condensate obtained by cooling coking gas produced by coking preheated coal, the condensate is preheated by heat exchange with the coking gas entering a raw gas cooler and is then admitted into the coking gas collecting main of the coking ovens, from which it passes to the tar separator. A method and an apparatus are disclosed.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: January 5, 1982
    Assignees: Bergwerksverband GmbH, Didier Engineering GmbH
    Inventors: Kurt-Gunther Beck, Diethard Habermehl, Werner Kucharzyk, Werner Siebert
  • Patent number: 4306941
    Abstract: A dry coke quenching process comprises the steps of preheating a coke from a coke oven to a temperature of not lower than C. by way of burning over its layer a combustible gas mixed with heated air, cooling the coke first to a temperature of not lower than C. with a mixture of hydrocarbons and water vapor, and then with an inert gas to a temperature of from to C.An apparatus for effecting the process of the invention comprises a chamber lined from inside with refractory brick and provided with a means for introducing a combustible gas and heated air to the upper part of the chamber and for discharging combustion gases therefrom. Provided in the middle part of the chamber are means intended for a heated mixture of hydrocarbons and water vapor to pass in therethrough and for a flow of the resultant gas containing hydrogen and carbon monoxide to escape therethrough.
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: December 22, 1981
    Inventors: Vasily E. Privalov, Ivan G. Zubilin, Zoltan-Ivan I. Todavchich, Nikolai K. Kulakov, Adolf N. Silka, Alexandr N. Minasov, Mikhail G. Ananievsky, Naum E. Temkin, Vyacheslav I. Solodkov
  • Patent number: 4306939
    Abstract: Regenerative changeover of a coke oven battery is designed for operation according to a method wherein each regenerative half period is broken down into a time when gas is supplied at a constant pressure to the burners in heating flues and a time when no gas is supplied. A final control facility acts on the regenerative changeover facility to enable the regenerative half period to be broken down into these two time periods. A controller is responsive to variations in gas properties, such as the calorific value, density, humidity and temperature, to bring about operation of the final control element so that the heating time and the pause in every regenerative half period have values such that the heat supplied to the battery in each half period remains constant.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: December 22, 1981
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventor: Folkard Wackerbarth
  • Patent number: 4305788
    Abstract: The process for the production of molded metallurgical coke from dried coal or fine coal mixtures with a low swelling index particularly highly volatile fine coal comprises mixing normal washed fine coal or fine coal mixtures of a grain size of from 0 to 10 mm and a swelling index of not more than 5 with a binder, pressing the mixture into briquettes, oxidizing the briquettes in a continuous material flow stream, and coking the oxidized briquettes continuously in an oven chamber by supplying indirectly and exhausting the coke oven gases with a temperature of to C.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: December 15, 1981
    Assignee: Firma Carl Still GmbH & Co KG
    Inventors: Heinrich Weber, Kurt Lorenz, Horst Dungs, Klaus Urbye
  • Patent number: 4304636
    Abstract: The bulk density and throughput characteristics of coking coal are improved by treating the coal with a surfactant and a combination of fuel oil and alcohol or of solid lubricant and water, the surfactant being soluble in, and increasing the spreading coefficient of, fuel oil or water, as the case may be.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: December 8, 1981
    Assignee: Apollo Technologies, Inc.
    Inventors: Mark O. Kestner, Stanley E. Gilewicz, Mehmet E. Aktuna
  • Patent number: 4303477
    Abstract: The emission of halogens and sulfur dioxide and the formation of water-soluble compounds of heavy metals are suppressed in the pyrolysis of waste in a carbonization zone at a temperature in the range from to C. by adding a fine-grained basic material to the waste prior to completion of the pyrolysis of the waste in the carbonization zone.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: December 1, 1981
    Assignee: Babcock Krauss-Maffei Industrieanlagen GmbH
    Inventors: Rudiger Schmidt, Franz Steininger
  • Patent number: 4302546
    Abstract: An airtight chamber insulated with an anti-corrosive coating allows the control of the heat and moisture content of organic wastes for rapid aerobic decomposition by naturally occurring thermal bacteria. Air is drawn into the chamber, over and through the organic waste and carbonaceous filler materials and is exhausted through an air scrubber. Agitation of the waste mixture is by means of two or more anti-corrosive coated stirrers on a rotating shaft; the rotation rate being two revolutions or less per minute to accelerate the biological decomposition process and 35 or more revolutions per minute to fluff and dry the material after the completion of the biological process. During the drying process the air direction is reversed by means of a blower and a controlled heating element to speed drying. Utilization of the blower and heating element also helps to initiate the biological decomposition activity in cold temperatures.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: November 24, 1981
    Inventor: Harold E. Schlichting, Jr.
  • Patent number: 4300986
    Abstract: A door cleaner is capable of automatically scraping a door side, knife edge and recessed inside surface to remove tar and the like adhered thereto. The cleaner can remove both viscous material at the knife edge and recessed inside surface of the door and dried and solid material at the door side close to the coking chamber. Jet nozzles are arranged on scraper devices for cleaning the knife edge and the recessed inside areas to completely scrape and further wash away the viscous tars adhered thereto.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: November 17, 1981
    Assignee: Koritsu Machine Industry Limited
    Inventors: Tsuzuki Akira, Tobitani Hiroshi
  • Patent number: 4299356
    Abstract: A spray nozzle for use in the elbow interconnecting a coke oven ascension pipe and a main, characterized in having frusto-conical nozzle orifices which generate sprays which completely cover the elbow cross section only when they reach the transition between the elbow and the coke oven main.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: November 10, 1981
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Carl-Heinz Struck, Ralf Schumacher
  • Patent number: 4297146
    Abstract: A method for the production of an anhydrous powdered dextrose containing large amounts of anhydrous crystals of .beta.-form dextrose, characterized by concentrating aqueous solutions of dextrose, or aqueous solutions containing dextrose up to a sugar concentration of 90 to 98%, adding anhydrous crystals of .beta.-dextrose or powdered dextrose containing large amounts of anhydrous .beta.-dextrose as seed crystals to this concentrate at temperatures above C., maintaining the temperature above C., and while stirring gently, eliminating the free water by vacuum dehydration from the time of formation of microcrystals by adequately reducing the pressure.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: October 27, 1981
    Assignee: CPC International Inc.
    Inventors: Yoshinari Mise, Eijiro Tomimura
  • Patent number: 4295938
    Abstract: A coke-oven door assembly has a doorjamb having an outwardly facing annular doorjamb surface. A rigid door body has an annular outer edge aligned with and generally perpendicular to the doorjamb surface and is provided with an annular and hollow rigid frame juxtaposed with this edge and limitedly displaceable relative to the door body. An annular seal strip engages the door edge and bears inwardly on the doorjamb surface. A rail is movable inside the frame toward and away from the doorjamb surface and a plurality of elastically compressible biasing devices are engaged between the rail and the seal strip to urge the latter toward the doorjamb surface. A plurality of spacers extending from the doorjamb are engaged with this rail, normally via respective plungers, so that the biasing force effective on the seal strip remains the same even if the door body is distorted by the effects of heat.
    Type: Grant
    Filed: September 23, 1980
    Date of Patent: October 20, 1981
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventor: Friedhelm Haaf
  • Patent number: 4294663
    Abstract: A method of quenching coke and scrubbing the resulting gases is disclosed in which a supply of hot coke is placed in an enclosed tower having an open top and subjected to water deposited on it from above. The water is first passed through at least one layer of a liquid gas contact body formed of corrugated sheets of material arranged with the corrugations in each adjacent sheet crossing each other. This water passes in countercurrent relation to the gases rising from the quenched coke and, as a result, particulate matter, liquid drops and water-soluble vapors in the gases are removed in the contact body. The gases passing from the contact body are then passed through a mist-eliminator structure to remove water droplets therefrom.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: October 13, 1981
    Assignee: Munters Corporation
    Inventor: Richard P. Tennyson
  • Patent number: 4293388
    Abstract: Abrasion-proof coke forms are produced from bituminous coal, brown coal, or peat in the form of briquets, by preheating the briquets, dehydrating or predrying them, carbonizing them and then cooling them in at least three separate stages in which the briquets are dehydrated indirectly by subjecting them to indirect temperature conditions, producing a temperature gradient in the briquets. The briquets are automatically fed into a shaft tower which includes an upper drying shaft portion made up of a plurality of stacked radiators which include tube elements for the passing of a heating fluid, such as steam, therethrough and which define vertical shaft passages through which the briquet forms are passed downwardly and into a carbonizing shaft which has separate gas channels for directing heating gases therethrough and to a heating flue and which subsequently includes a lower cooling zone through which the briquets pass and then into a discharge channel where they are delivered for classification.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: October 6, 1981
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventors: Kurt Lorenz, Horst Dungs, Hans B. Koenigs, Roman Kurtz
  • Patent number: 4293389
    Abstract: A door closure construction for sealing the sealing edge of a coke oven door in a coke oven having an opening with an outer rigid frame bounding the opening, comprises an adjustable inner frame which fits into a recess of the outer frame and may be adjustably positioned in respect thereto and in respect to the sealing edge of the coke oven door.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: October 6, 1981
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventor: Heinrich-Josef Clement
  • Patent number: 4292137
    Abstract: An door lifter for coke ovens is provided with a door lifting or lowering power actuator consisting of two hydraulic cylinders connected in series and in back-to-back relationship. In the case of the door removal, first one of the two hydraulic cylinders is actuated so that the hooks are made into engagement with the corresponding lug pieces of the door and when they have engaged, said one hydraulic cylinder is stopped and locked. Thereafter the other hydraulic cylinder is actuated so that the door is lifted to be removed from the oven. In order to reengage the door, the other hydraulic cylinder is reversely actuated so that the door is lowered by the same stroke as the lift stroke and then said one hydraulic cylinder is reversely actuated so that the hooks are disengaged from the lug pieces of the door.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: September 29, 1981
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Kenji Fujita, Yuji Shibata, Hisao Mikuni, Tsuneo Shibuya
  • Patent number: 4290854
    Abstract: A horizontal coke oven battery construction in which a pusher is mounted to extend into the batteries from one side and push coke out of the batteries on the opposite side, comprises a plurality of coke oven batteries disposed in a row. A first waste gas flue extends along the pusher side of the batteries and a second waste gas flue extends along the coke side. A stack flue at one end of the batteries is connected to the first and second waste gas flues. The construction includes means for directing the heating gases into each oven battery during operation so that, in respect to the pusher and coke size, approximately one-half of the batteries is heated by upward burning and the other half is heated by downward burning. For example, all odd numbered batteries may be heated in the same direction and all even numbered batteries heated in the same direction.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: September 22, 1981
    Assignee: Firma Carl Still
    Inventors: Manfred Strobel, Friedrich, both of Thiersch
  • Patent number: 4289734
    Abstract: Apparatus for countercurrently contacting solids with a liquid comprises a rotatable drum housing a screw conveyor having helical turns affixed to the cylindrical side wall of the drum and defining a helical passageway for the solids between the turns, the passageway is divided into a series of compartments. Each compartment has a grating receiving the solids and raising the received solids while liquid is drained through the grating and then permitting the drained solids to fall into a succeeding compartment, and an imperforate partition trailing the grating in the direction of rotation of the drum, the partition defining a chamber receiving the liquid drained from the solids with the adjacent side wall of the drum and the helical screw turns. A passageway interconnects each chamber with the upstream compartment and these passageways extend along the side wall of the drum.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: September 15, 1981
    Assignee: Fives-Cail Babcock
    Inventor: Andre Longuet