Patents by Inventor Dirk HOELSCHER

Dirk HOELSCHER 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).

  • Hydraulic-binder rotary-furnace operation
    Patent number: 10480858
    Abstract: Method of operating a rotary furnace for the production of hydraulic binder so as to reduce ring formation therein, whereby the longitudinal temperature profile in the furnace is varied during furnace operation by injecting at least one fluid other than the main fuel(s), the primary oxidizer and hot air from the material cooler with at least one continuously or discontinuously varying injection parameter.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: November 19, 2019
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Alex Grassi, Dirk Hoelscher, Bertrand Leroux, Jacques Mulon, Xavier Paubel, Remi Tsiava
  • Process and apparatus for improving the combustion of secondary fuel in a rotary kiln and process for retrofitting a rotary kiln with a burner assembly
    Patent number: 10087104
    Abstract: The present invention relates to a process and apparatus for improving the combustion of a secondary fuel supplied in a first stream in a rotary kiln, wherein the rotary kiln has a burner assembly comprising a main burner and a plurality of feed channels for various media, of which one is designed for the supply of a secondary fuel, in particular in the form of particles or shreds in a stream of compressed air. According to the invention, a tubular oxygen lance for an oxygen-rich gas, in particular, technical grade gaseous oxygen, or an oxygen-rich liquid, in particular, technical grade liquid oxygen, with an angled nozzle at its end, is arranged in or on a feed channel of the burner assembly, whereby the oxygen lance is brought into such a position that the oxygen emerging from a nozzle forms a second stream that strikes a first stream of secondary fuel.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: October 2, 2018
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Frank Rheker, Dirk Hölscher, Robert Klein
  • HYDRAULIC-BINDER ROTARY-FURNACE OPERATION
    Publication number: 20170016670
    Abstract: Method of operating a rotary furnace for the production of hydraulic binder so as to reduce ring formation therein, whereby the longitudinal temperature profile in the furnace is varied during furnace operation by injecting at least one fluid other than the main fuel(s) the primary oxidizer and hot air from the material cooler with at least one continuously or discontinuously varying injection parameter.
    Type: Application
    Filed: February 26, 2015
    Publication date: January 19, 2017
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Alex GRASSI, Dirk HOELSCHER, Bertramd LEROUX, Jacques MULON, Xavier PAUBEL, Remi TSIAVA
  • PROCESS AND APPARATUS FOR IMPROVING THE COMBUSTION OF SECONDARY FUEL IN A ROTARY KILN AND PROCESS FOR RETROFITTING A ROTARY KILN WITH A BURNER ASSEMBLY
    Publication number: 20150232382
    Abstract: The present invention relates to a process and apparatus for improving the combustion of a secondary fuel supplied in a first stream in a rotary kiln, wherein the rotary kiln has a burner assembly comprising a main burner and a plurality of feed channels for various media, of which one is designed for the supply of a secondary fuel, in particular in the form of particles or shreds in a stream of compressed air. According to the invention, a tubular oxygen lance for an oxygen-rich gas, in particular, technical grade gaseous oxygen, or an oxygen-rich liquid, in particular, technical grade liquid oxygen, with an angled nozzle at its end, is arranged in or on a feed channel of the burner assembly, whereby the oxygen lance is brought into such a position that the oxygen emerging from a nozzle forms a second stream that strikes a first stream of secondary fuel.
    Type: Application
    Filed: October 4, 2013
    Publication date: August 20, 2015
    Applicant: L'Air Liquide, Societe Anonyme pur I'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Frank Rheker, Dirk Hölscher, Robert Klein