Patents by Inventor Heinz-Juergen Muehlen

Heinz-Juergen Muehlen 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: 8333951
    Abstract: A method produces a product gas rich in hydrogen. A starting material including carbon is split via pyrolysis, and the resulting gas is mixed with water vapor to increase the hydrogen content and heated. The heat necessary comes from the combustion of the produced pyrolysis coke. The heat necessary for individual process steps is fed via a heat transfer medium circuit having a heating zone heated via flue gas from the pyrolysis coke firing. The gas/water vapor mixture is subsequently heated in a reaction zone. The heat transfer medium heats the starting material in a pyrolysis zone indirectly, without directly contacting the starting material, is cooled in a cooling zone, and subsequently returns to the beginning of the circuit. Upstream of the heating zone, the heat transfer medium is preheated via the hot product gas.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: December 18, 2012
    Inventor: Heinz-Juergen Muehlen
  • Publication number: 20100119440
    Abstract: The invention relates to a method for producing a product gas rich in hydrogen, wherein a starting material comprising carbon is split by means of pyrolysis, and the resulting pyrolysis gas, which is mixed with water vapor to increase the hydrogen content, is heated. The method obtains the heat necessary for the process from the combustion of the pyrolysis coke that is produced. To this end, the heat necessary for the individual process steps is fed to the process by means of a heat transfer medium circuit, which is heated in a heating zone (13) by means of flue gas (12) from the pyrolysis coke firing (11), the pyrolysis/water vapor mixture is subsequently heated in a reaction zone (3), the pyrolysis zone (2) is heated, cooled in a cooling zone (19), and subsequently returned to the beginning of the circuit.
    Type: Application
    Filed: October 16, 2007
    Publication date: May 13, 2010
    Inventor: Heinz-Juergen Muehlen
  • Patent number: 7077878
    Abstract: The aim of the invention is to provide a method for gasifying organic materials which is simple to carry out and requires minimal equipment and which produced an undiluted gas of high calorific value. The inventive method should eliminate the need to use fluid beds and heat exchangers with high temperatures on both sides, with the heat being transferred from the furnace to a heat-carrying medium in a particularly defined way. To this end, the feed material is divided into a volatile phase and a solid carbon-containing residue in the pyrolysis reactor by circulating a hot heat-carrying medium. After the reaction agent has been added, said volatile phase is converted into the product gas by further heating in the reaction area, also using the heat-carrying medium. The solid, carbon-containing residue is separated from the heat-carrying medium in the separating stage and burnt in the furnace.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: July 18, 2006
    Assignee: Dr. Mühlen GmbH & Co. KG
    Inventors: Heinz-Jürgen Mühlen, Christoph Schmid