Patents by Inventor Werner Roll

Werner Roll 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).

  • Heat-recovery boiler
    Patent number: 7322317
    Abstract: The invention relates to a heat-recovery boiler (3) consisting of a tube bundle heat exchanger (7) which is incorporated into a pressure vessel (2) downstream of a gasification device. Displacement bodies (9) are inserted into pipes which are flowed around by hot process gas. According to said invention, in order to avoid corrosion problems like metal dusting, said displacement bodies (9) are made of graphite.
    Type: Grant
    Filed: February 7, 2004
    Date of Patent: January 29, 2008
    Assignee: Lurgi AG
    Inventors: Walter Boll, Werner Röll, Christoph Erdmann, Ulrich Wagner, Thomas Wurzel
  • Heat-recovery boiler
    Publication number: 20060075976
    Abstract: The invention relates to a heat-recovery boiler (3) consisting of a tube bundle heat exchanger (7) which is incorporated into a pressure vessel (2) downstream of a gasification device. Displacement bodies (9) are inserted into pipes which are flowed around by hot process gas. According to said invention, in order to avoid corrosion problems like metal dusting, said displacement bodies (9) are made of graphite.
    Type: Application
    Filed: February 7, 2004
    Publication date: April 13, 2006
    Inventors: Walter Boll, Werner Roll, Christoph Erdmann, Ulrich Wagner, Thomas Wurzel
  • Method of preventing metal dusting corrosion of ducts which conduct hot gas mixtures containing carbon monoxide
    Patent number: 5935517
    Abstract: A carbon monoxide containing gas mixture at a temperature of 500.degree. C. is conducted through the inner protective tubing of a sheath tube lined with a thermally insulating protecting composition. The inner tubing is divided into sections and a potentially CO-free mass is introduced in the sheath tube in the regions of the thermally insulating mass to permeate the latter and form a barrier between the carbon monoxide gas and sheath tube, thereby eliminating hot spots and metal dusting corrosion.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: August 10, 1999
    Assignee: Metallgesellschaft AG
    Inventors: Werner Roll, Friedrich W. Hohmann
  • Tubular heater for preparing carbon monoxide-containing gas mixtures
    Patent number: 5490974
    Abstract: The tubular heater comprises numerous tubes, which are disposed in a combustion chamber and contain catalyst. A synthesis gas, which mainly comprises hydrogen, carbon monoxide, and carbon dioxide, is prepared in the tubes. There is a risk of a formation of carbides (metal dusting corrosion) on the outside surface of the outlet ends of the tubes. To prevent such corrosion, a gaseous or vaporous protecting fluid, which is substantially free of CO, is supplied to the region surrounding the outlet ends of the tubes.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: February 13, 1996
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Friedrich Hohmann, Werner Roll, Hans G. Mortel
  • Method and apparatus for testing pipes
    Patent number: 4411152
    Abstract: A method and an apparatus for testing the tightness of a threaded connection between an oilfield pipe and a tapped connector. An annular space along the threaded connection is sealed with a test head, and only the threaded connection is thus subjected to internal hydraulic pressure via this connection.
    Type: Grant
    Filed: July 28, 1981
    Date of Patent: October 25, 1983
    Assignee: Estel Hoesch Werke Aktiengesellschaft
    Inventor: Werner Roll
  • Apparatus for chip removal and chip receiving when seaming metal bands
    Patent number: 4153216
    Abstract: An apparatus for chip removal and chip receiving when trimming metal bands, which includes an automatically driven and self-controlling winding-up device for tautly winding-up the seam chip cut off from a metal band being trimmed. The apparatus furthermore includes a chip guiding device reciprocable alongside the chip winding-up region for guiding engagement with the chip being fed to the winding-up device.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: May 8, 1979
    Assignee: Hoesch Werke Aktiengesellschaft
    Inventors: Karl-Heinz Becker, Friedhelm Gunther, Manfred Gerber, Werner Roll
  • Circular shaped stone monument
    Patent number: D478402
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: August 12, 2003
    Assignee: Natursteine Roll
    Inventor: Werner Roll
  • Crystal shaped stone monument
    Patent number: D479030
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: August 26, 2003
    Assignee: Natursteine Roll
    Inventor: Werner Roll