Patents Assigned to Rheinkalk GmbH & Co. KG
  • Mixed powder containing a carbon compound
    Patent number: 6352956
    Abstract: A powder comprises a mixture of up to 40 weight percent activated cokes and inert materials. In the mixture, at least one of the inert material components is matched in terms of its grain size distribution to the grain size distribution of the activated coke component so that in a gas medium at rest, the speed of vertical descent of the coarse grain of the inert material component is substantially equal to the speed of vertical descent of the coarse grain of the activated coke component.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: March 5, 2002
    Assignee: Rheinkalk GmbH & Co. KG
    Inventors: Ekkehard Kienow, Bernd Morun, Thomas Schwertmann, Heinz Hoberg
  • Method for the reduction of NOX emissions
    Patent number: 6296820
    Abstract: A method and an apparatus to reduce NOx emissions in the exhaust gas from installations that form NOx as a result of combustion processes, such as the production of cement clinker, in which the NOx decomposition occurs in the temperature range from approximately 450° C. to approximately 850° C. and in an oxidizing atmosphere with a fuel-air ratio (Lambda) approximately equal to 1.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 2, 2001
    Assignee: Rheinkalk GmbH & Co. KG
    Inventors: Armin Fröhlich, Maria Regina Mönnig, Siegfried Happrich