Patents by Inventor Andreas C. H. Rühl

Andreas C. H. Rühl 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).

  • Determination of supplemental fuel requirement and instantaneous control thereof involving regenerative thermal oxidation
    Patent number: 7033544
    Abstract: A control system for a regenerative thermal oxidizer in which contaminated air is first passed through a hot heat-exchange bed and into a communicating high temperature oxidation (combustion) chamber, and then through a relatively cool second heat exchange bed. The apparatus includes a number of internally insulated, ceramic filled heat recovery columns topped by an internally insulated combustion chamber. Contaminated air is directed into heat exchange media in one of said columns, and oxidation is completed as the flow passes through the combustion chamber. From the combustion chamber, the now clean air flows through another column containing heat exchange media, thereby storing heat in the media for use in a subsequent inlet cycle when the flow control valves reverse. The resulting clean air is directed via an outlet valve through an outlet manifold and released to atmosphere or is recirculated back to the oxidizer inlet.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: April 25, 2006
    Assignee: Megtec Systems, Inc.
    Inventors: Michael G. Tesar, Andreas C. H. Ruhl, Steven J. Zagar
  • Web dryer with fully integrated regenerative heat source and control thereof
    Patent number: 6681497
    Abstract: Integrated web dryer and regenerative heat exchanger, as well as a method of drying a web of material using the same. The apparatus and method of the present invention provides for the heating of air and the converting of VOCs to harmless gases in a fully integrated manner via the inclusion of a regenerative combustion device as an integral element of the drying apparatus.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: January 27, 2004
    Assignee: Megtec Systems, Inc.
    Inventors: Michael P. Bria, Alan D. Fiers, Andreas C. H. Rühl
  • Web dryer with fully integrated regenerative heat source and control thereof
    Patent number: 6651357
    Abstract: Integrated web dryer and regenerative heat exchanger, as well as a method of drying a web of material using the same. The apparatus and method of the present invention provides for the heating of air and the converting of VOCs to harmless gases in a fully integrated manner via the inclusion of a regenerative combustion device as an integral element of the drying apparatus.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 25, 2003
    Assignee: Megtec Systems, Inc.
    Inventors: Michael P. Bria, Alan D. Fiers, Andreas C. H. Rühl
  • Multi-layer heat exchange bed containing structured media and randomly packed media
    Patent number: 6302188
    Abstract: A heat exchanger for a regenerative thermal oxidizer is described which includes at least one heat exchange column provided with a multi-layer of packing material including at least one layer of randomly packed and specially shaped and sized particles, each particle being formed of a high temperature stable material and preferably having a cylindrical outer wall and internal reinforcing vanes extending from the cylindrical outer wall to the center of the particle, and at least one layer of structured monolithic media having a plurality of flow passages in the direction of gas flow through the column.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: October 16, 2001
    Assignee: Megtec Systems, Inc.
    Inventors: Andreas C. H. Ruhl, Edward G. Blazejewski, William L. Thompson