Patents Examined by Bradley Garris
  • Patent number: 4419186
    Abstract: The strength and density of a metallurgical coke produced in a slot coke oven are both increased by replacing at least a part of the normal loose charge in the oven with compacted materials and fragments thereof made from a mixture of particularly sized particulate fusible bituminous coal particles, non-fusible particles of a material compatible with the burden of a blast furnace, and water. During compacting the pressure and the moisture content of the mix are such that at least some water is squeezed out of the mix. The non-fusible materials that are useful include non-coking coals, poorly coking coals, other carbonaceous materials, such as coke breeze, char, anthracite, lignite, and iron oxide-bearing materials, such as iron ores and waste materials from steel plants. At least a major proportion of the fusible particles and at least a substantial proportion of the non-fusible particles are smaller than about 0.15 mm.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: December 6, 1983
    Inventor: Fritz O. Wienert
  • Patent number: 4417952
    Abstract: An apparatus for cleaning the top or bottom horizontal section of a coke oven door seal ring and which applies approximately constant pressure to all points along its lateral path. A cleaning head is pivotally mounted on the terminal end of an arm member which is, itself, pivotally mounted to oscillate in a horizontal arc on a base structure. An extension of the door cleaner frame is suspended above the arm and on this frame there is mounted a spring. A vertical, spring driven link is attached at its upper terminal end to this spring and at its lower end to the base. This link is also medially attached to the frame so as to pivot in a vertical arc about this point of attachment. A second idler link which is pivotally connected at its top to the frame and at its bottom to the pivoting base keeps the cleaning head from being vertically displaced out of contact with the seal ring.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: November 29, 1983
    Assignee: Koppers Company, Inc.
    Inventor: Rodney C. Irwin
  • Patent number: 4416732
    Abstract: A horizontal coke oven battery in which heating chambers between coking chambers are divided by midfeathers or header walls into vertically-extending heating flues. Extending upwardly through the midfeathers are feed flues which communicate with the regenerators of the coke oven battery and have feed flue outlets disposed at different heights in the heating flues. In this invention, the feed flue outlets comprise one or more vertically-extending elongated slots which facilitate "soft" combustion and flame formation, greatly reducing temperature peaks and nitrogen oxide formation.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: November 22, 1983
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Paul Gernhardt, Heinz Thubeauville, Carl-Heinz Struck
  • Patent number: 4416733
    Abstract: A dry quenching apparatus for hot coke has an upright housing having openings for charging and discharging the coke. An annular header for exhausting gases from the quenching zone is arranged in the middle portion of the housing. In the lower portion of the housing there is an annular header for supplying a cooling agent and communicating through corresponding passages with a distributor disposed above the annular header for supplying a cooling agent and centrally of the housing. An annular distribution header is arranged above the annular header for supplying a cooling agent and has vertical partition walls dividing the distribution header into sections. Each section has at least one opening through which the annular header for supplying gases and the annular distribution header communicate. At least one opening in each section accommodates a flow governor for a cooling agent.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: November 22, 1983
    Assignee: Giprokox
    Inventors: Evgeny P. Likhogub, Stanislav S. Sergeev, Alexandr N. Minasov
  • Patent number: 4416855
    Abstract: Radioactive waste treatment apparatus in which the waste is burned in a controlled combustion process, the ash residue from the combustion process is removed and buried, the gaseous effluent is treated in a scrubbing solution the pH of which is maintained constant by adding an alkaline compound to the solution while concurrently extracting a portion of the scrubbing solution, called the blowdown stream. The blowdown stream is fed to the incinerator where it is evaporated and the combustibles in the blowdown stream burned and the gaseous residue sent to the scrubbing solution. Gases left after the scrubbing process are treated to remove iodides and are filtered and passed into the atmosphere.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: November 22, 1983
    Assignee: Koch Process Systems, Inc.
    Inventors: Richard F. Abrams, James G. Chellis
  • Patent number: 4416858
    Abstract: A continuous contactor comprises a rotary tubular rotor through which the streams to be contacted flow. The rotor has an inner wall which is substantially cylindrical and an outer wall spaced from the inner wall. The rotor is divided internally into a number of rings of buckets by axial and radial separators. Each bucket has an opening in the cylindrical inner wall at the leading part of the bucket with respect to the direction of rotation of the rotor.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: November 22, 1983
    Assignee: RTL Contactor Holding S.A.
    Inventors: Lee F. Robinson, Giuliano Porcari
  • Patent number: 4415407
    Abstract: A downflow evaporator for concentrating a descending stream of liquid containing solids comprises a bundle of downflow tubes having open upper ends affixed to an upper tube sheet and open lower ends affixed to a lower tube sheet, the tubes receiving the stream of liquid through the upper ends and discharging it through the lower ends. The liquid is caused to cascade over the entire surface of the upper tube sheet whereby the liquid is distributed thereover and over the open upper tube ends. A covering is placed over the upper end of each downflow tube and spaced therefrom so as to prevent the liquid from dripping into the central portion of the tube whereby the stream of liquid descends peripherally along the inner surface of the tube.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: November 15, 1983
    Assignee: Fives-Cail Babcock
    Inventor: Andre Longuet
  • Patent number: 4414063
    Abstract: Removal of acrylonitrile from latex by azeotropic distillation with methanol.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Robert A. Smiley
  • Patent number: 4414072
    Abstract: A coking chamber of a coke-oven battery, with heated longitudinal walls interconnected by a doorjamb at each end, is closed by a pair of doors sealingly fitting into these doorjambs. Each door has a vertical channel separated from the exterior by an outer wall with a heat-insulating layer and from the interior of the chamber by an upright metal plate facilitating thermal conduction therebetween. The channel is accessible at various levels or over its entire length to gases evolving from a charge inside the chamber which, in rising toward the roof of the chamber, retransmit some of their heat through the metal plate to the charge for enabling substantially uniform heating thereof from four sides.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: November 8, 1983
    Assignee: WSW Stahl-und Wasserbau GmbH
    Inventors: Dieter Breidenbach, Wilhelm Mosebach
  • Patent number: 4412890
    Abstract: Hollow shaft members with orifices at different elevations throughout their heights are located in the heating flues of a coke oven battery. The shafts receive preheated gaseous combustion-supporting agents from the regenerators. Advantages include decreased midfeathers thickness, greater heating area, and having the possibility of rich-gas heating in which the flame is distributed over the whole height of the heating flue.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: November 1, 1983
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventor: Heinz Thubeauville
  • Patent number: 4412841
    Abstract: Compacted carbonaceous shapes are produced by mixing a particulate carbonaceous material with a binder, forming green shapes from the mixture, and heating the green shapes by induction heating or microwave heating or a combination thereof. The process is particularly adapted for making formcoke.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: November 1, 1983
    Assignee: Inland Steel Company
    Inventors: William Du Broff, George H. Craig, Timothy A. Veslocki
  • Patent number: 4412891
    Abstract: A coke oven door assembly which is engageable in coke oven frame comprises a door body with a sealing diaphragm which has a clamp leg portion which extends substantially parallel to a surface of the door and a free leg portion which extends substantially at right angles to the clamped leg portion. An adjusting element overlies the clamped leg portion and is clamped in position by a clamp assembly which carries a fixed bar in a movable part which bears against the free leg portion and is biased by a spring into engagement with the free leg portion. The free leg portion is adapted to have a knife edge portion at the end thereof engaged against the door frame and any displacement of the door relative to the door frame will be indicated by a change in position of the movable part carried by the clamp.
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: November 1, 1983
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventor: Werner Abendroth
  • Patent number: 4412889
    Abstract: Pyrolysis reaction apparatus and method are described in which carbonizable waste material is fed into the pyrolysis reaction chamber by an inlet conduit which passes through the wall of a heating furnace surrounding such chamber. As a result, the material is immediately vaporized in the reaction chamber due to the high temperature at the inlet portion of the chamber where the material is introduced. A fluid cooling jacket surrounds the inlet conduit to maintain the temperature within such conduit below the melting temperature of the material being transmitted therethrough in order to prevent clogging of the conduit. The material is fed into the reaction chamber by the inlet conduit along an input feed direction which is laterally offset from the axis of the shaft of an impeller for conveying such material through such chamber and is preferably directed toward the tips of the impeller blades in order to prevent clogging of the impeller.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: November 1, 1983
    Assignee: Kleenair Products Co., Inc.
    Inventor: Robert C. Oeck
  • Patent number: 4411736
    Abstract: A method and apparatus for recovering vapors from a polymer solution comprising liquid solvent and polymer. The solution is passed from first and second strippers to a crumb slurry tank. Vapors from the slurry tank and second stripper are combined and used as the stripping medium for the first stripper.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: October 25, 1983
    Assignee: Phillips Petroleum Company
    Inventor: John S. Hubby
  • Patent number: 4410399
    Abstract: A self-sealing door assembly for a coke oven comprises a door frame affixed around the oven opening, the surfaces of the frame facing the oven defining a gap which is filled with heat insulating material, and the outer front surfaces of the frame cooperating with iron sealing strips on the body of the door. The gap filled with insulating material is defined between the vertical and transverse surfaces on the door frame facing the oven and an internal angle-sectioned cover divided around the periphery of the door frame into a plurality of overlapping sections which are supported on distance pieces attached to the surfaces of the door frame.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: October 18, 1983
    Assignee: Ruhrkohle Aktiengesellschaft
    Inventors: Wilhelm Holz, Helmut Lukaszewicz
  • Patent number: 4410398
    Abstract: A method and apparatus for assisting an operator in a coke cutting operation wherein both a graphic and audio display of the operation are provided. The vibration of the coke drum is measured and after filtering, is recorded on a chart recorder and its amplitude converted to a related audio signal.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: October 18, 1983
    Assignee: Shell Oil Company
    Inventors: Arthur H. T. Chipman, Ernest M. Bony
  • Patent number: 4409067
    Abstract: A column of hot coke from a shaft furnace moves downwardly into a vessel which it fills and forms a pile. A gap is left between the angle of repose of the coke surface and the upper portion of the vessel. Water is sprayed onto hot coke as it enters the vessel. The gap is vented to an exhaust duct. A baffle near the center of the vessel deflects the material to the sides and creates a void in the center of the vessel, which void is also vented to the exhaust duct. More water is sprayed on the coke adjacent the void. Steam pressure in the vessel is reduced by a fan which pulls steam through the exhaust ducts. The steam pressure is regulated by a pressure controller which modulates a damper in the exhaust duct. A temperature controller regulates the flow of quench water to the vessel. This regulates the temperature and moisture content of the material being cooled.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: October 11, 1983
    Assignee: Peabody Coal Company
    Inventor: Jimmy B. Smith
  • Patent number: 4409068
    Abstract: Combustion gas such as air, oxygen-enriched air or oxygen is introduced at an intermediate level in a vertical shaft kiln for the calcining of petroleum coke using a plurality of radially disposed combustion gas injectors. The injectors include means for circulating coolant around the periphery of the injector so that common metals may be used in the high temperature (above 2000.degree. F.) environment of the shaft kiln.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: October 11, 1983
    Assignee: Conoco Inc.
    Inventors: Richard L. Davis, Harlan G. Graf, Don L. Edwards
  • Patent number: 4407702
    Abstract: Disclosed is a tubular device for preventing the egress of gases evolved in an oven chamber during the charging thereof. The tubular device is moved into an operative location forming a hermetic seal with leveling openings in the doors for two adjacent oven chambers, one of which is to receive a coal charge. The gases evolved during the charging operation pass into the adjacent oven chamber where carbonization has proceeded to an advanced state. The tubular device includes two tubular front parts engageable with the leveling openings of coke oven doors, a U-shaped connecting member, and a tubular rear part which is disposed to receive a leveler which can extend through the rear part and into an oven chamber. A flap is raised from a normally-closed position in the rear part of the device by movement of the leveler bar therein. A truck on which the tubular device is mounted can move in a direction of the oven chamber axis on tracks disposed on a frame for the leveler.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: October 4, 1983
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Hans-Jurgen Kwasnik, Hans-Gunter Piduch
  • Patent number: 4407699
    Abstract: A process and apparatus for the dry cooling of coke involves the provision of a vessel having therein first and second zones in full communication with each other. Hot coke from a coking operation is introduced into the first zone and is passed through the first and second zones. Raw coke oven gas from the coking operation is introduced into the first zone, thereby reducing the temperature of the coke, while cleaning the raw coke oven gas to form cleaned coke oven gas. The cleaned coke oven gas is removed from the first zone, cooled, and then directly or indirectly utilized as a heat carrier gas introduced into the second zone to therein further reduce the temperature of the coke. The thereby further cooled coke is removed from the second zone.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: October 4, 1983
    Assignee: Didier Engineering GmbH
    Inventors: Claus Flockenhaus, Dietrich Wagener, Erich Hackler, Stefan Smieskol, Manfred Galow, Joachim Meckel, Dieter Breidenbach