Patents by Inventor Michael Streffing

Michael Streffing 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: 9915595
    Abstract: A method for operating a gas sampling probe includes removing a gas to be analyzed from a process space in the region of a front end of a gas sampling tube and conducting it through the gas sampling tube as far as a rear end and, in the process, cooling it by passing cooling air between the gas sampling tube and at least one outer casing enclosing the gas sampling tube. The cooling air is fed and discharged at the rear end of the gas sampling tube and the temperature of the gas to be analyzed is higher in the region of the front end of the gas sampling tube than the temperature of the fed cooling air, and the gas sampling probe emits outward, wherein the temperature of the fed cooling air is higher than the temperature of the discharged cooling air.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: March 13, 2018
    Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Ludwig Könning, Michael Streffing, Heinz Bredemeier, Alfons Leuer
  • Patent number: 9724843
    Abstract: The invention relates to a cement production system with a preheater for preheating the cement raw meal, a calciner for pre-calcining the preheated cement raw meal, and a rotary kiln for firing the pre-calcined cement raw meal, wherein the calciner has a riser pipe through which exhaust gases from the rotary kiln flow. The gas offtake probe is arranged in a calciner nozzle, which is formed by a nozzle-like constricted section of the riser pipe, wherein the gas offtake probe is arranged flush on the calciner nozzle of the riser pipe.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: August 8, 2017
    Assignee: ThyssenKrupp Industrial Solutions AG
    Inventors: Alfons Leuer, Heinz Bredemeier, Michael Streffing, Klaus Adler
  • Publication number: 20160209306
    Abstract: A method for operating a gas sampling probe includes removing a gas to be analyzed from a process space in the region of a front end of a gas sampling tube and conducting it through the gas sampling tube as far as a rear end and, in the process, cooling it by passing cooling air between the gas sampling tube and at least one outer casing enclosing the gas sampling tube. The cooling air is fed and discharged at the rear end of the gas sampling tube and the temperature of the gas to be analyzed is higher in the region of the front end of the gas sampling tube than the temperature of the fed cooling air, and the gas sampling probe emits outward, wherein the temperature of the fed cooling air is higher than the temperature of the discharged cooling air.
    Type: Application
    Filed: July 31, 2014
    Publication date: July 21, 2016
    Applicant: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Ludwig KÖNNING, Michael STREFFING, Heinz BREDEMEIER, Alfons LEUER
  • Publication number: 20150265989
    Abstract: The invention relates to a cement production system with a preheater for preheating the cement raw meal, a calciner for pre-calcining the preheated cement raw meal, and a rotary kiln for firing the pre-calcined cement raw meal, wherein the calciner has a riser pipe through which exhaust gases from the rotary kiln flow. The gas offtake probe is arranged in a calciner nozzle, which is formed by a nozzle-like constricted section of the riser pipe, wherein the gas offtake probe is arranged flush on the calciner nozzle of the riser pipe.
    Type: Application
    Filed: November 5, 2013
    Publication date: September 24, 2015
    Inventors: Alfons Leuer, Heinz Bredemeier, Michael Streffing, Klaus Adler
  • Patent number: 5979342
    Abstract: A burner for the combustion of coal dust in which a stream of primary air and coal dust mixture is conducted through a dust conduit connected to a primary dust tube. A secondary air tube surrounds the primary dust tube, and a tertiary air tube surrounds the secondary air tube. The secondary and tertiary air tubes are connected to a helically-shaped input housing, and a conically flared section extends from each of the secondary and tertiary air tubes. An angular momentum is applied in the dust conduit divides the primary air and coal dust mixture into high-dust and low-dust partial streams, so that the high-dust partial stream flows through the primary dust tube, and the low-dust partial stream flows through the primary gas tube.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: November 9, 1999
    Assignee: Babcock Lentjes Kraftwerkstechnik GmbH
    Inventors: Alfons Leisse, Michael Streffing
  • Patent number: 5832847
    Abstract: The process for combustion of coal dust with combustion air in burners and for reducing the production of NO.sub.x during the combustion. Combustion air is fed to the burners in form of primary air and secondary air. The burners are supplied coal dust through the primary air in a mixture of coal dust and primary air. A primary gas is generated with combustible gaseous components from the mixture of coal dust and primary air, through pyrolysis of the coal dust in the ignition region of the burners. In the ignition region, there is lowered the mean ratio of oxygen components in the primary gas to the oxygen amount required to burn freely released combustible gaseous components of the primary gas by reducing the oxygen component in the primary gas and/or injecting the primary gas with a combustible external gas.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: November 10, 1998
    Assignee: Babcock Lentjes Kraftwerkstechnik GmbH
    Inventors: Alfons Leisse, Michael Streffing
  • Patent number: 5687658
    Abstract: A method of burning coal with less than 10% volatiles in a burner supported by air. The coal is pulverized in a pulverizer and supplied to the burner mixed with a vehicle in the form of air. The object is more reliable ignition. The coal is separated from the air before it enters the burner and is combined into a new mixture with heated air. The second mixture is forwarded at a higher temperature and with a lower level of coal. The coal is separated from the second mixture and combined into a third mixture with heated air. The third mixture is forwarded at a higher temperature and with a higher level of coal.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: November 18, 1997
    Assignee: Babcock Lentjes Kraftwerstechnik GmbH
    Inventors: Michael Streffing, Alfons Leisse
  • Patent number: 5651320
    Abstract: A burner for burning powdered fuel in air. The air is divided into concentric annular currents. A tube (6) conveys primary air or gas. The tube is surrounded by another tube (12). The second tube conveys secondary air. The exit of the primary-air tube inside the secondary-air tube is surrounded by an annular baffle (26). The baffle is open at each end, has secondary air flowing through it, and extends axially beyond the primary-air tube as much as 25% of the tube's outside diameter. The thickness of the gap (25) between the primary-air tube and the baffle is at least 1.5% of that diameter.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: July 29, 1997
    Assignee: Babcock Lentjes Kraftwerkstechnik GmbH
    Inventors: Alfons Leisse, Michael Streffing