Patents by Inventor Zumao Chen

Zumao Chen 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: 9377191
    Abstract: The present disclosure relates to a center air jet burner for burning low quality fuel including an annular pipe having a fuel inlet and a fuel outlet. A core pipe that includes a first opening and an opposite second opening that defines an inner zone, the core pipe extends within the annular pipe defining a first annular zone. A burner elbow is configured to supply a fuel airflow mixture including pulverized coal and primary air to the fuel inlet and the first opening. The first opening of the core pipe is eccentrically aligned relative to the fuel inlet of the annular pipe such that the fuel airflow mixture passing through the burner elbow is divided into an outer fuel rich stream having an increased amount of pulverized coal within the first annular zone and an inner fuel-lean stream having an increased amount of primary air within the inner zone.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 28, 2016
    Assignee: The Babcock & Wilcox Company
    Inventors: Albert D LaRue, Zumao Chen, Keir D McQuistan
  • Patent number: 8991323
    Abstract: A coal nozzle assembly for a pulverized coal burner includes a diffuser. A flow conditioner also may be used with the assembly. The assembly conditions the coal/air flow before the coal/air flow is introduced to the furnace. The flow conditioner directs the coal into the diffuser where it is swirled to form a fuel rich outer ring disposed about an air rich inner portion before the fuel is delivered to the coal nozzle.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: March 31, 2015
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Albert D. Larue, Leonard D. Hazlett, Kurt S. Titmas, Zumao Chen
  • Publication number: 20140373763
    Abstract: The present disclosure relates to a center air jet burner for burning low quality fuel including an annular pipe having a fuel inlet and a fuel outlet. A core pipe that includes a first opening and an opposite second opening that defines an inner zone, the core pipe extends within the annular pipe defining a first annular zone. A burner elbow is configured to supply a fuel airflow mixture including pulverized coal and primary air to the fuel inlet and the first opening. The first opening of the core pipe is eccentrically aligned relative to the fuel inlet of the annular pipe such that the fuel airflow mixture passing through the burner elbow is divided into an outer fuel rich stream having an increased amount of pulverized coal within the first annular zone and an inner fuel-lean stream having an increased amount of primary air within the inner zone.
    Type: Application
    Filed: June 25, 2013
    Publication date: December 25, 2014
    Inventors: Albert D. LaRUE, Zumao CHEN, Keir D. McQUISTAN
  • Publication number: 20100123027
    Abstract: A coal nozzle assembly for a pulverized coal burner includes a diffuser. A flow conditioner also may be used with the assembly. The assembly conditions the coal/air flow before the coal/air flow is introduced to the furnace. The flow conditioner directs the coal into the diffuser where it is swirled to form a fuel rich outer ring disposed about an air rich inner portion before the fuel is delivered to the coal nozzle.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 20, 2010
    Inventors: Albert D. Larue, Leonard D. Hazlett, Zumao Chen, Kurt S. Titmas
  • Patent number: 6995288
    Abstract: A method for the production of methyl mercaptan is provided. The method comprises providing raw feed gases consisting of methane and hydrogen sulfide, introducing the raw feed gases into a non-thermal pulsed plasma corona reactor, and reacting the raw feed gases within the non-thermal pulsed plasma corona reactor with the reaction CH4+H2S?CH3SH+H2. An apparatus for the production of methyl mercaptan using a non-thermal pulsed plasma corona reactor is also provided.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: February 7, 2006
    Assignee: University of Wyoming
    Inventors: Rehka Agarwal, legal representative, Temi M. Linjewile, Ashley S. Hull, Zumao Chen, Pradeep K. Agarwal, deceased
  • Publication number: 20040249217
    Abstract: A method for the production of methyl mercaptan is provided. The method comprises providing raw feed gases consisting of methane and hydrogen sulfide, introducing the raw feed gases into a non-thermal pulsed plasma corona reactor, and reacting the raw feed gases within the non-thermal pulsed plasma corona reactor with the reaction CH4+H2S→CH3SH+H2. An apparatus for the production of methyl mercaptan using a non-thermal pulsed plasma corona reactor is also provided.
    Type: Application
    Filed: December 12, 2002
    Publication date: December 9, 2004
    Inventors: Pradeep K. Agarwal, Rehka Agarwal, Temi M. Linjewile, Ashley S. Hull, Zumao Chen