Patents Examined by Joseph Scovronek
  • Patent number: 4276262
    Abstract: The entrainment of reaction medium in the vapor phase is decreased in a chlorine dioxide generator producing a gaseous mixture of chlorine dioxide, chlorine and steam from a boiling reaction medium and wherein generator liquor is recycled with make up chemicals by providing a tangential entry of recycled liquor to the generator in the vapor space above the liquid level in the generator and a helically-arranged baffle projecting inwardly from the generator wall at least in the height of the generator corresponding to the tangential entry opening into the vapor space. The baffle is arranged to be above the trajectory of the recycled liquor as it enters the generator. Decreased liquor entrainment enables the generator diameter to be decreased, with consequentially decreased capital costs.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: June 30, 1981
    Assignee: ERCO Industries Limited
    Inventor: Gerald Cowley
  • Patent number: 4270980
    Abstract: A method for recovering and utilizing heat of coke-oven gas, which comprises: through heat exchange with a high-temperature coke-oven gas generated from a coke oven battery and containing vaporized coal tar, vaporized low boiling point substances and dust, drying and preheating a blended raw material coal fine to be charged into coking ovens of said coke oven battery, and, on the other hand, causing most of said coal tar contained in said coke-oven gas to condense and deposit onto the particle surfaces of said coal fine during the process of said heat exchange, thereby recovering and utilizing sensible heat and condensation heat of said coke-oven gas and substances contained therein, and at the same time, eliminating most of the contained coal tar from said coke-oven gas.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: June 2, 1981
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Teruo Shimotsuma, Kazuo Kunioka, Hiroaki Nishio, Yasuo Okuyama
  • Patent number: 4269807
    Abstract: Arrangement for resiliently mounting a ceramic monolithic type catalytic converter element in a metal housing with a blanket of knit wire mesh material includes at least one circumferential band of high temperature intumescent material containing ceramic fibers positioned within the wire mesh blanket which prevents virtually all bypass leakage around the element and substantially reduces the temperature of the wire mesh.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: May 26, 1981
    Assignee: UOP Inc.
    Inventors: Charles H. Bailey, Ted V. DePalma, James E. Dillon
  • Patent number: 4265860
    Abstract: The numerous advantages of a Soxhlet apparatus are combined with the nice pressure and temperature controls afforded by a pressure vessel to enlarge the scope and efficacy of both pieces of equipment. A judicious selection of solvent, such as CO.sub.2, provides a solvent-free extract which is ideal for gas chromatographic studies and can advantageously be used in an ever-widening spectrum of analyses including research, food and flavor, pheremone analysis and essence extraction. The extraction of oil from coal and oil shale, in comminuted form, is also facilitated by the use of the apparatus operated under reflux conditions, controlled pressure-temperature relations and appropriate choice of extractant.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: May 5, 1981
    Assignee: J & W Scientific, Incorporated
    Inventors: Walter G. Jennings, Robert H. Wohleb, Norman W. Wohlers
  • Patent number: 4265859
    Abstract: A method and related apparatus are provided for producing on a semi-continuous basis polycrystalline silicon and melt replenishment for a crystal growth crucible. The silicon is deposited in low density form on the inner walls of a multi-walled reaction chamber by delivering gaseous HSiCL.sub.3, SiH.sub.4, or the like, and reducing gas if needed, through the chamber which is heated to the reaction temperature of the feed gas. After a certain amount of silicon has been produced, the chamber temperature is raised sufficiently to melt down the silicon which is then used to replenish a crystal growth crucible. The operations are then cyclically repeated.The apparatus includes a reaction chamber having a multi-walled configuration to maximize the interior surface area on which the silicon is deposited. A drain trap such as a U-shaped tube, or the like, is connected to the bottom of the reaction chamber and provided with heating elements.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: May 5, 1981
    Assignee: Energy Materials Corporation
    Inventor: David N. Jewett
  • Patent number: 4263099
    Abstract: Method for the reduction of emissions from the wet quenching of incandescent coke in a quenching tower adapted to receive in its base a quench car containing the coke which comprises positioning the car with the coke in the quenching chamber of the tower, effecting a gas seal to substantially prevent air from infiltrating the quenching chamber and ascending the tower, quenching the coke with the resultant generation of steam and other quenching emissions, cooling and cleaning the emissions with water sprays, demisting the cooled emissions, sensing the external and internal pressures of the tower during the quenching process, maintaining a substantially zero gauge internal pressure by controlling the emissions flow exiting the tower and collecting, cooling and recycling the quenching and cooling waters. Apparatus for practicing the method is also disclosed.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: April 21, 1981
    Assignee: Bethlehem Steel Corporation
    Inventor: Richard W. Porter
  • Patent number: 4263467
    Abstract: A method for recovering dissolved boron trifluoride from a hydrocarbon liquid in a vacuum column at moderate temperatures by trickling the hydrocarbon over metallic or ceramic packing in the column. Dissolved boron trifluoride catalyst is recovered from the crude oligomer reaction product resulting from the oligomerization of 1-decene.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: April 21, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ajay M. Madgavkar, Robert Bartek
  • Patent number: 4263100
    Abstract: A method reducing fine dust emission during the time that predried and preheated coal is charged into coke ovens comprises directing wet coal to be carbonized into direct contact with a hot process gas so that the coal is transported dry and heated, directing the hot process gas with the heated coal to a plurality of different separators in succession with the first separator being set to separate only around from 80 to 90% of the total amount of the coal and without separating the fine dust, and a subsequent separator separate the remaining amount of the solid matter including the fine dust, compacting the dust removed from all of the separators and mixing them together, and charging the compacted mixed dust into the coke oven. The apparatus for effecting the invention includes a material separator which is designed as a gravity separator or gravity sifter which is arranged to discharge into a connection between the mixed and compacted dust separator in separate additional separators.
    Type: Grant
    Filed: September 20, 1979
    Date of Patent: April 21, 1981
    Assignee: Firma Carl Still GmbH & Co. KG.
    Inventors: Dieter Stalherm, Janos Bocsanczy
  • Patent number: 4261956
    Abstract: A cartridge for a gas generator of the type in which a liquid such as water is reacted with a solid fuel such as a base metal hydride comprises a canister which contains at least one compressible filler means which cooperates with the canister interior to define a fuel charge compartment. The canister has a plurality of fluid flow passages formed in it to place the fuel charge compartment in fluid flow communication with the exterior of the canister. Preferably, a pair of compressible filler means such as blocks of a synthetic polymeric foamed material are placed within the canister to define the fuel charge compartment between them. The fluid flow passages communicate with the fuel compartment so that upon immersion of the cartridge into a liquid the liquid flows through the passages to contact the fuel and react with it to form a gas.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: April 14, 1981
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventor: Otto J. Adlhart
  • Patent number: 4261955
    Abstract: The disclosure concerns an apparatus for generating gas by the reaction of water reactive gas producing fuel with water vapor. A chamber houses the metal hydride fuel and a water vapor is introduced into the fuel chamber through a pair of spaced porous hydrophobic membranes. Reaction of the water vapor with the fuel produces a gas such as hydrogen (if calcium hydride fuel is used) or oxygen for use in a fuel cell. A "dead space" is positioned between the porous hydrophobic membranes which provides a safety feature that is unique in its use. If, during operation, an excessive sudden demand is made for the generated gas, i.e. hydrogen, and in turn for water vapor, with this invention, unvaporized water which might be pulled through the outer membrane or membranes will then pass through the hydrogen outlet rather than accidently directly contacting the fuel.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: April 14, 1981
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Cornelius E. Bailey, Jr., Walter G. Taschek
  • Patent number: 4257439
    Abstract: Apparatus useful for blending predetermined accurately measured quantities of gaseous components transferred from separate pressurized supply tanks to a gas blending system, preferably on input signals received from a computer. The gas blending system includes a mixing vessel, a pressure transducer associated with said vessel for measuring the pressure of the gases, and producing an output signal and transmitting same to the computer, a circulating pump connected in series via conduits which form a circuit, and valves; preferably a multi-component valve assembly operatively communicating the two ends of the conduits for flow of gas therethrough in providing the functions of purging gas from the system, evacuating the system of gases, admixing the gaseous components received from the pressurized supply tanks to form the gaseous blend, and producing a product output blend of the admixed gases.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: March 24, 1981
    Assignee: Bi-M Instrument Company
    Inventor: Donald P. Mayeaux
  • Patent number: 4258002
    Abstract: An explosive gas detector employing an electrically conductive element which, when powered, changes temperature in the presence of an explosive gas, and a control circuit which senses the increases in temperature and decreases the power input to the element as an inverse function of changes in temperature of the element. The level of electrical power provided the element is indicative of the concentration of explosive gas present.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: March 24, 1981
    Inventor: Thomas A. Barr
  • Patent number: 4255872
    Abstract: An interview or demonstration portfolio for prospective teachers and other professionals includes audiovisual components, demonstration slides and writings to highlight the competencies and performance skills of a candidate.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: March 17, 1981
    Inventor: Eugene Williams, Sr.
  • Patent number: 4256783
    Abstract: A catalytic vapor phase oxidation reactor which comprises a fixed-bed shell and tube heat exchange apparatus in which a bundle of a multiplicity of tubes filled with at least one type of oxidizing catalyst are disposed in a shell and these tubes are passed through the apertures formed in at least one perforated shield plate to partition the inside of the shell into at least two heat transfer medium feed zones and in such a manner that each of the tubes passing through the perforated shield plate is not in direct contaction with the shield plate but the outer surface of the tube and the inner surface of the aperture are spaced apart by a distance of between 0.2-5 mm, supplying feed gas to the tubes of the reactor, and conducting exothermic catalytic vapor phase oxidation while controlling the temperatures for the heat transfer medium in each of the zones so that the temperature difference between each of the zones can be maintained between C.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: March 17, 1981
    Assignee: Nippon Skokubei Kagaku Kogyo Co., Ltd.
    Inventors: Masahiro Takada, Hiroyuki Uhara, Takahisa Sato
  • Patent number: 4254086
    Abstract: The manufacture of hydrogen and oxygen by the dissociation of water vapor at elevated temperatures followed by separation of hydrogen from the water vapor and the oxygen produced using a hydrogen permeable membrane is improved by increasing the surface area of the membrane exposed to the dissociation gas mixture.One way of increasing the surface area of contact, according to the present invention, is to form a hydrogen permeable membrane coated on one side of a porous refractory wafer with an inlet hole through the wafer connecting a beginning of the maze and an outlet at the end of the maze facing the opposite direction from the inlet. A number of these wafers are then stacked or replicated front-to-back with each outlet corresponding to the inlet of the next wafer to give a compact and efficient hydrogen diffusion separator.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: March 3, 1981
    Inventor: Alfred P. Sanders
  • Patent number: 4252773
    Abstract: A safety chemical cartridge for adaptation in an automatic chemical feeder apparatus. The cartridge including a cylinder-like chemical container having an outer surface with first and second ends and a middle portion spaced between the two ends.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: February 24, 1981
    Inventors: Robert Spiegel, Bill Spiegel
  • Patent number: 4252771
    Abstract: A methanation reactor, to be used preferably in an integrated urea-ammonia process for methanizing carbon oxides is disclosed, in which the catalyst bed and an underlying heat exchanger of the tube-bundle type make up a unit mounted centrally of the reactor casing with a gap left between the reactor casing inside wall and said centrally mounted unit. Fresh gases to be methanized enter the gap, then the heat exchanger from below and flow upwards to the catalyst bed, whereafter they flow down to the exchanger again. Incoming gases sweep the exchanger tubes from the outside, while the reacted gases flow in the interior of the tubes of the heat exchanging bundle. Insulation blankets and gland seals are provided.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: February 24, 1981
    Assignee: Asnaprogetti S.p.A.
    Inventors: Vincenzo Lagana, Francesco Saviano, Stanislao Ferrantino
  • Patent number: 4252770
    Abstract: The invention relates to an apparatus for the production of phosphoric acid by subjecting yellow phosphorus to combustion inside a combustion tower, the apparatus comprising a cone-shaped shell with a flat bottom of acidproof material forming the combustion tower, the cone ratio of the shell being 1:10 to 1:12. An upwardly-directed off-gas outlet is secured to the lower portion of the shell and a plurality of downwardly directed spray nozzles is arranged so as to open through the middle portion of the shell into the interior of the combustion tower. An acid-receiving cup with an overflow weir is positioned near the upper end of the shell, the acid-receiving cup surrounding the combustion tower concentrically, being gas-tightly connected to, and supporting, a self-supporting cone-shaped tower cover having a passageway passed centrally through it. The overflow weir is formed of a tubular-annular structure disposed completely horizontally inside the acid-receiving cup.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: February 24, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ursus Thummler, Hugo Werner
  • Patent number: 4251225
    Abstract: Method of detecting carbon monoxide gas at temperatures of C. or less by using a detecting element containing stannic oxide as the main component, which element is prepared by mixing stannic oxide, antimony trioxide and platinum in atomic ratios of Sb/Sn = at least 0.005, Pt/Sn = at least 0.004 and Sb/Pt = at least 0.005, and sintering said mixture at a temperature of at least C.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: February 17, 1981
    Assignee: Nohmi Bosai Kogyo Co., Ltd.
    Inventors: Takashi Handa, Koichi Endo
  • Patent number: 4251475
    Abstract: A method and apparatus are provided for controlling the amount of dry particulate matter and liquid added to a rotary pelletizer. A transducer placed within the pelletizer senses a characteristic of the mixed material in the pelletizer. This characteristic may be, for example, the level of the batch or the size of the pellets. The transducer signal is then conditioned to provide a signal level corresponding to a desired characteristic level and which varies about that level corresponding for example to the variations of pellet size about a desired size. That signal is added to a second signal representing the actual liquid flow into the pelletizer or added to a second signal representing actual dry particulate flow into the pelletizer and modulates that respective flow to maintain the input of either the dry or the liquid material into the pelletizer as necessary. Additionally, a set point signal can be provided as a constant signal representing desired dry particulate in flow or liquid in flow.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: February 17, 1981
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Eugene C. Varrasso, Richard K. Henry