Patents by Inventor Robert M. Koros

Robert M. Koros has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4961882
    Abstract: In its simplest sense, the present invention provides a method for forming fine gaseous bubbles in a liquid ambient by forcing a gas through orifices located in the liquid ambient to generate a stream of gas bubbles, while simultaneously forcing a liquid through liquid orifices at a velocity sufficient to form jet streams of liquid, the liquid orifices being substantially coplanar with and equal in number to the gas orifices so that each jet stream of liquid intersects each stream of gas bubbles and creates sufficient turbulence, whereby the fine gas bubbles are formed.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: October 9, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Phiroz M. Bhagat, Robert M. Koros
  • Patent number: 4960571
    Abstract: According to this invention, a quench assembly having improved mixing efficiency comprises a series of mixing zones: quench fluid inlet zone; quench mixing zone; a jet stirred mixing zone; and a distributor zone. In the quench fluid inlet zone, quench fluid is introduced to fluid from the catalytic bed above. The quench fluid is introduced through holes in a quench pipe, creating jets of quench fluid which entrain and mix the reactant fluid, typically partially reacted, from the bed above. This mixing zone is separated from the quench mixing zone by means of a horizontally disposed plate having a central opening therein. The reaction fluid and quench fluid enter the quench mixing zone through the central opening in the plate separating the two zones and impinge on a bottom quench mixing zone plate, where the gases are turned radially outward and passed over and around a series of mixing baffles.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: October 2, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Phiroz M. Bhagat, Robert M. Koros, Rutton D. Patel, Jose M. Peruyero, John T. Wyatt
  • Patent number: 4233269
    Abstract: A fluid flow distributor for mixing and distributing gas and liquid over the cross-section of the reactor vessel having an upward fluid flow path. The distributor comprises an inlet pipe for directing quench liquid into and through an inlet feed conduit connected with the reactor and an elliptically-shaped cover plate disposed above the outlet of said conduit, against which the flow from the conduit is directed. A relatively uniform distribution of the gas and liquid to the vessel is obtained by means of the plurality of apertures provided in the plate and the double reflection of the flow from the cover plate and the bottom of the vessel. The inlet conduit includes a plurality of baffles and orifices which aid in the thorough mixing of the quench liquid and the primary or main gas-liquid flow. This is a continuation of application Ser. No. 777,028, filed Mar. 14, 1977 now abandoned.
    Type: Grant
    Filed: November 9, 1978
    Date of Patent: November 11, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Larry A. Kaye, Robert M. Koros
  • Patent number: 4212835
    Abstract: A mixing device for combining a quench or catalyst stream with the main fluid stream in an upflow gas-liquid contactor, such as a reactor. A gas-liquid stream is passed through a reduced size passage wherein the quench or catalyst streams are injected. The combined stream then is mixed and redistributed.
    Type: Grant
    Filed: May 6, 1971
    Date of Patent: July 15, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventor: Robert M. Koros
  • Patent number: 3960508
    Abstract: A trough-type scale trap for use with a refinery or chemical plant reactor having a catalyst bed subject to plugging by fine particles. Compared to prior art traps, the trough-type scale trap of the invention is characterized by a larger volumetric capacity and screen area and is substantially easier to construct and to install or remove from closed reactor vessels than conventional traps. Its typical embodiment is as a series of parallel troughs having rectangular openings and disposed chordally across the reactor normal to the direction of flow. In one embodiment, the trough is a rectangular parallelepiped; in another embodiment, the substantially rectangular opening is reduced by tapering to a bottom significantly smaller than the inlet opening.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: June 1, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Glyndwr A. R. Bessant, Paul D. Eichamer, Robert M. Koros, Steven R. Schieni