Gas-flow Control Patents (Class 261/96)
  • Patent number: 4747970
    Abstract: Absorption and drying towers for treating sulphur trioxide process gases and air, respectively, with concentrated sulphuric acid in the manufacture of sulphuric acid. Each tower has a suitably shaped downwardly angled gas delivery duct protruding into a lower chamber of the tower to prevent acid from entering inside the duct. Each tower also has its lower chamber defined by the base of the tower and a suitably formed packing support. Additional packing is interposed between the lower walls of the tower and the packing support. Improved corrosion resistance of the metal components is obtained.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: May 31, 1988
    Assignee: C-I-L Inc.
    Inventor: John McFarland
  • Patent number: 4726328
    Abstract: A vehicle driven by an air propeller which is, in turn, powered by an internal combustion engine. An improved induction system is provided wherein both the carburetor fuel bowl vent and the air intake of the engine are protected from pressure differences generated by the action of the propeller.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: February 23, 1988
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Makoto Takeda, Tatsuya Kamiya
  • Patent number: 4693853
    Abstract: An anesthetic vaporizer with a vaporizer chamber into which leads a gas inlet channel for fresh gas and which is connected via an outlet channel with a proportioning unit containing setting means for the anesthetic concentration to be released to the fresh gas is to be improved in such a way that exchanging the various anesthetics is made possible to only a single proportioning unit. The vaporizer chamber is a self-enclosed housing part to be coupled to the proportioning unit via connectors and the setting means are adjustable to the release of the respective anesthetic used.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: September 15, 1987
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Wolfgang Falb, Martin Ryschka, Carl-Friedrich Wallroth
  • Patent number: 4632789
    Abstract: This invention relates generally to the art of gas humidification and more particularly to an improved apparatus for humidifying a gas.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: December 30, 1986
    Inventor: Philip L. Reid
  • Patent number: 4619813
    Abstract: A gas absorption system is disclosed. The system comprises a vertical housing having a plurality of superposed absorption stages, each stage comprising a ball bed, a plurality of venturi tubes located below the ball bed through which gas is circulated upwardly from stage to stage, a piping system for circulating an absorption liquid at each stage, the level of the absorption liquid in each stage being maintained by overflow from stage to stage, a nozzle connected to the piping system and centered over each venturi tube pointing upwardly into the ball bed for spraying absorption liquid into the ball bed to react the gas circulated through each stage with the absorption liquid, and a cap for capping each venturi tube to prevent the absorption liquid from dripping from stage to stage through the venturi tubes. Each cap includes gas openings allowing gas to flow upwardly from stage to stage to be reacted with the absorption liquid in the ball bed of each stage.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: October 28, 1986
    Assignee: Fraser Inc.
    Inventors: James A. Healey, Robert C. Duncan, Charles F. Roussel
  • Patent number: 4617157
    Abstract: An adjustable fragrance dispenser for an appliance has a mounting base, a fragrance cartridge selectively attachable to the base and a reciprocal slide having a pair of spaced shutters for selectively closing dispensing openings on corresponding walls of the cartridge. One of the shutters is spaced further from the base than the other to provide for removal and replacement of the cartridge.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: October 14, 1986
    Assignee: Whirlpool Corporation
    Inventors: Ray J. Stein, Raymond G. Simons
  • Patent number: 4565634
    Abstract: Water intended for injection into an oil reservoir is freed from oxygen by gravitating the water through a vacuum tower. Gases liberated from the water by the vacuum process are drawn off at the bottom of the respective stages of the tower. Liberated nitrogen at the top of each stage will then flow down through the tower in cocurrent flow with the water and thus act as an internal stripping gas reducing the partial pressure of oxygen in the gaseous phase. Gases and vapors drawn off from the bottom of each vacuum stage after the first stage are pressurized to the pressure of the preceeding stage and reinjected into that stage.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: January 21, 1986
    Assignee: Sintef
    Inventor: Aksel Lydersen
  • Patent number: 4533367
    Abstract: Apparatus and method for cleaning dirty gases using an apparatus comprising a particulate bed through which the dirty gases pass upwardly without being fluidized while a wash liquid descends through the bed .Clean gas supplied to a small region below the bed passes through a channel within the bed. Bed particles, preferably hollow spheres of polypropylene, are entrained in the clean gas and are transported by it to the top of the particulate bed. By this transportation, clogging, dense packing of bed material, and channel formation within the bed, are avoided.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: August 6, 1985
    Inventor: Dzemal Hadzismajlovic
  • Patent number: 4472325
    Abstract: An apparatus is disclosed for distributing a downflowing liquid uniformly across the packed bed of a vapor-liquid contact column. The apparatus consists of a distributor unit and a parting manifold. The distributor unit includes a plate with upstanding walls positioned crosswise and lengthwise on the plate to define separate, open-top compartments. Installed in each compartment are a number of drip tubes which extend above and below the plate. Gas riser openings are positioned between certain compartments and the distributor unit is mounted inside the column above the packed bed. The parting manifold is mounted above the distributor unit, and it includes a header circuit, crosswise end conduits, a crosswise lateral conduit, and a vertical standpipe conduit. The end conduits and lateral conduit have closed ends and each includes outlet ports therein.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: September 18, 1984
    Assignee: The Dow Chemical Company
    Inventor: Lanny A. Robbins
  • Patent number: 4405563
    Abstract: A system of apparatus is especially adapted to react gaseous contaminates of natural gas streams with a slurry of reactant particles and incorporates a contactor tower with a bottom gas inlet having a screen at its dynamic liquid level to confine downwardly a fill of packer-spacer material. Gas entering through the bottom inlet of the tower is divided by the packer-spacer material in tortuous flow paths maintained by the confining screen.In advance of the contactor tower, after an inlet scrubber, is a heater which elevates the temperature of the gas before it enters the contactor tower. This avoids formation of clogging hydrates and liquefication of the gas. Using an outlet scrubber assures against entrance of droplets of any liquid into the pipeline.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: September 20, 1983
    Assignees: Irwin Fox, Alvin Samuels, David Samuels
    Inventor: Alvin Samuels
  • Patent number: 4397795
    Abstract: In a gas-tight sealing device for rotary gas-liquid contacting apparatus, a liquid channel takes excess sealing liquid away from the seal to reduce viscous drag.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: August 9, 1983
    Assignee: Thomas Broadbent & Sons Limited
    Inventor: Joseph F. Jackson
  • Patent number: 4382900
    Abstract: In centrifugal gas-liquid contact apparatus, liquid hold-up is reduced by the provision of guide means to separate the liquid outflow from the gas inflow to the rotor.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: May 10, 1983
    Assignee: Imperial Chemical Industries PLC
    Inventor: James W. Wem
  • Patent number: 4372275
    Abstract: A liquid fuel vaporizing carburetor for an internal combustion engine including a housing having a fuel reservoir, a filter assembly including a plurality of filters of progressively smaller pores positioned in said housing; one of said filters being immersed in the fuel reservoir, a baffle for drifting incoming air into the filter in the reservoir and secondary air into openings in the housing to add secondary air to the air-fuel mixture as the air-fuel mixture passes through the filter assemblies.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: February 8, 1983
    Inventor: Arlo R. Schmidt
  • Patent number: 4370300
    Abstract: An aromatic odorant emitting device comprising a mainbody case and a cover case, said device including an odorant, and an evaporator immersed with the aromatic odorant, and a fan unit which blows the air to the evaporator so as to control the evaporation rate of the odorant in response to the temperature and the illumination intensity in the room, with the aid of a thermosensor and a photosensor, so that a constant aromatic odorant evaporation is provided.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: January 25, 1983
    Assignee: Duskin Franchise Kabushiki Kaisha
    Inventors: Yasuyuki Mori, Haruo Nishimura, Yoshikazu Sugahara
  • Patent number: 4333894
    Abstract: A mass-transfer column consisting of one or more contact zones. The contact zones are exclusively provided with packings placed in prearranged locations. In the contact zones, optimal operating conditions for the packings are created over the entire height of the contact zones in order to achieve a minimal pressure loss at a concomitant high separating efficiency. This is done by implementing a suitable gradated adaptability of the packing to the vapor and liquid loads varying over the height of the contact zones.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: June 8, 1982
    Assignee: Veb Chemieanlagenbaukombinat Leipzig-Grimma
    Inventors: Klaus Hoppe, Jurgen Muller, Jurgen Keller, Bernd Kulbe, Klaus Lessig, Christian Berlin, Eckhard Danke
  • Patent number: 4313908
    Abstract: The invention is for a two phase gas and liquid mixture reacting in an improved fixed bed reactor having at least one auxiliary bed disposed above the main bed. The auxiliary beds each have separate liquid and gas bypasses comprising hollow tubing of relatively different lengths extending through the auxiliary bed. The gas bypass tubing projects to a greater height above the auxiliary bed than the liquid bypass tubing. This tubing bypass arrangement allows for a low pressure drop bypass of the auxiliary bed to the main bed by the liquid and gas when the auxiliary bed becomes fouled.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: February 2, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventor: Ramesh Gupta
  • Patent number: 4301094
    Abstract: Evaporation air humidifier having a water supply container with a filter support plate carrying an evaporation filter, and having a removable auxiliary plate whereon electrical components are assembled including a motor and a pump driven thereby and extending into the water supply container, as well as a fan blade disposed on an upper side of the motor, and an installation housing, and further having a connecting hose interconnecting the pump and the evaporation filter and a dome with air inlet and outlet openings including a guide member carried by the auxiliary plate at the underside thereof, a guide secured to the water supply container and engageable with the guide member, a first coupling member for the connecting hose carried by the auxiliary plate, a second coupling member held by the filter support plate, the first coupling member being automatically couplable with the second coupling member when the guide member and the guide are mutually engaged.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: November 17, 1981
    Inventor: Heinz G. Baus
  • Patent number: 4301095
    Abstract: A superior room air freshener is disclosed having a short distance of travel from point of entry to egress for the delivery of a volatile liquid refreshener. The device is battery operated and can be wall mounted or displayed on a table.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: November 17, 1981
    Assignee: Product Enterprise, Inc.
    Inventors: Leo L. Mettler, Arthur L. Johnson
  • Patent number: 4269793
    Abstract: A carburettor for an internal combustion engine is provided with a porous material of very fine porosity of less than at a part or parts where a difference in pressure is developed within the carburettor from a relatively low pressure to a relatively high pressure in the direction of the air-fuel stream by a displacement of linear flow of the air-fuel stream.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: May 26, 1981
    Inventor: Jack K. Ibbott
  • Patent number: 4193776
    Abstract: The object of the invention is a method for the purification of the process condensate from synthesis gases or hydrogen plant.The process condensate is purified from contaminations dissolved in it by stripping it with process steam before it is used in the chemical process of the raw material conversion into hydrogen or synthesis gas at the pressure that is equal or higher than the pressure of this conversion process. The total steam containing volatile products of the process condensate degassing is recycled to the gas generation process and the process condensate is eventual transported to the water treatment station before using it as boiler feed water.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: March 18, 1980
    Assignee: Instytut Nawozow Sztucznych
    Inventors: Tadeusz Wasala, Marek Dmoch, Henryk Jozwiak
  • Patent number: 4166087
    Abstract: The present invention relates to an improved vapor dispenser and method that may be used for vapor-treating the air of a given area; the air-treating vapors containing such diverse elements as medicants, decongestants, inhalants, repellants, insecticides, bactericides, deodorants, and the like. The disclosed vapor dispenser may be described as a "semistatic" type, since it uses a static vapor generator that does not require a propellant, and uses automatic intermittent air movement for dispensing the accumulated vapors into the area to be treated by the vapors. Thus, the disclosed semistatic vapor dispenser continually provides the desired vapor concentration.An improved static vapor generator is also disclosed, the improvement permitting the static vapor generator to produce vapors at a more uniform rate during its entire lifetime.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: August 28, 1979
    Assignee: Cline-Buckner, Inc.
    Inventors: Lee S. Cline, Philip J. John
  • Patent number: 4140625
    Abstract: Distribution of a mixed-phase, vapor/liquid reactant stream to a fixed-bed of catalyst particles is accomplished through the use of a distributor tray in the form of a horizontal plate (or deck) having a plurality of vertically-disposed venturi-shaped eductors. The distributing device is installed within a substantially catalyst-free area of the reaction chamber and serves (i) to initially distribute the reactant stream as a froth to the reaction chamber and/or, (2) to distribute the effluent from one bed of catalyst particles to the next succeeding bed of catalyst particles.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: February 20, 1979
    Assignee: UOP Inc.
    Inventor: Robert H. Jensen
  • Patent number: 4094936
    Abstract: A packed bed gas-liquid contactor wherein the liquid distributor is positioned within and supported by the packed bed, with the portion of the packed bed above the liquid distributor being blocked by an imperforate structure and the remaining portion including non-process packing, whereby gas flows from the process packing through a limited portion of the upper part of the packed bed, defined by the non-process packing to the gas outlet. In this manner, the residence time of the gas in the upper portion of the bed is limited.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: June 13, 1978
    Assignee: The Lummus Company
    Inventor: Jorge M. Fernandez-Baujin
  • Patent number: 4093433
    Abstract: A wet scrubbing apparatus including a housing with a fluid flow inlet and a fluid flow outlet and a plurality of contactor beds disposed therein. Each contactor bed has an inlet and an outlet in communication with the fluid flow inlet and fluid flow outlet, respectively, of the housing and each of the contactor beds includes a damper assembly pivotally disposed within its inlet. As the gas flow rate through the apparatus changes, individual contactor beds can be removed from or brought onto stream by closing or opening selected damper assemblies.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: June 6, 1978
    Assignee: American Air Filter Company, Inc.
    Inventor: Mervin L. Smith
  • Patent number: 4039289
    Abstract: A sulphur-burning and gaseous products absorption system incorporating control means to establish generation of sulphur dioxide at a rate which is compatible with the capacity of absorption means for absorption of the gases by water, together with controls which make the system fail-safe even when unattended. In order to provide an absorption efficiency compatible with clean air standards, a unique absorption tower is provided, together with pre-cooling means further to improve the absorption tower efficiency. Further, the control efficiency and the purity of the product are improved by ebullition control. A unique joint is provided for sealing the sulphur-burning tower against undesirable leakage which also enables this tower readily to be disassembled for maintenance and repair.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: August 2, 1977
    Assignee: Chemsoil Corporation
    Inventors: Dwight D. Collins, Darrell R. Harmon
  • Patent number: 4017280
    Abstract: A pollution control device having a tank provided with an inlet and an outlet arranged for passing a gaseous medium to be cleaned into the tank and through a bath of washing solution held in the tank. A blower unit, mounted outside of the tank, forces the gaseous medium through the bath. A line connecting the blower unit to the bath passes a quantity of washing solution through the blower unit for cooling the unit. Baffles are arranged partially immersed in the bath in the tank for creating a large surface across the gaseous flow and facilitating separation of particulate matter from the medium being cleaned. The baffles are advantageously in the form of a plurality of cylinders each constructed from a mesh material and tiered in one or more substantially vertical channels arranged within the tank.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: April 12, 1977
    Inventors: Charles F. Cleman, David E. Gilligan
  • Patent number: 3996316
    Abstract: Gas feed system for a packed bed in which there is provided a plenum chamber within the packed bed comprised of a plurality of separate members supported by the packing, with gas being introduced into the plenum chamber and fed downwardly through the packing and then upwardly through a distributor to packing above the plenum chamber. A liquid feed system includes a main liquid distributor, auxiliary liquid distributors and associated conduits, all positioned within and supported by the packed bed.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: December 7, 1976
    Assignee: The Lummus Company
    Inventors: George Friedman, Harold B. Kohn
  • Patent number: 3938326
    Abstract: A catalytic combustor has an array of fuel injectors and air inductor elements, upstream of a catalytic member in the combustor. Each fuel injector and air inductor arrangement is associated with a discrete passageway confining the air/fuel mixture to a portion of and the catalytic member wherein the combustion of the mixture is initiated. Each fuel injector and air inductor arrangement is provided with controls to vary the fuel and air flowing into each passageway, respectively. This permits the variation of combustion intensity within the catalytic element, which in turn permits a regulatable temperature profile at the exit end of the combustor.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: February 17, 1976
    Assignee: Westinghouse Electric Corporation
    Inventors: Serafino M. DeCorso, Clifford E. Seglem