Patents by Inventor Sabuj Halder

Sabuj Halder 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).

  • Hot oxygen nozzle and uses thereof in gasifiers
    Patent number: 9481839
    Abstract: A hot oxygen nozzle and uses thereof in a gasifier, the hot oxygen nozzle comprising an outer-ring spout, a middle-ring spout, an inner-ring spout, and a central spout all sequentially and coaxially disposed, and a cooling system; the gasifier is an entrained-flow gasifier provided with one or more nozzles on a certain plane or a plurality of planes at the top or on the periphery of the gasifier body. The nozzle has a simple structure and is easy to make and maintain. A fuel gas passage is disposed inside the nozzle. Oxygen can be heated by a combustion of fuel gas; and high-temperature and high-speed oxygen can directly ignite carbonaceous materials such as coal-water slurry and coke-oven gas. The present invention can be applied in a gasifier and then in the final process of synthesis gas preparation.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: November 1, 2016
    Assignees: PRAXAIR TECHNOLOGY, INC., EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Qinghua Guo, Tao Wang, Zhenghua Dai, Guangsuo Yu, Xin Gong, Fuchen Wang, Haifeng Liu, Yifei Wang, William J. Mahoney, Sabuj Halder, Yi Ma, Jie Zhang, Zhijie Zhou, Robert J. Churpita, Christopher Herby, William Jeffrey Wilson, Zhuoyong Yan
  • HOT OXYGEN NOZZLE AND USES THEREOF IN GASIFIERS
    Publication number: 20150218470
    Abstract: A hot oxygen nozzle and uses thereof in a gasifier, the hot oxygen nozzle comprising an outer-ring spout, a middle-ring spout, an inner-ring spout, and a central spout all sequentially and coaxially disposed, and a cooling system; the gasifier is an entrained-flow gasifier provided with one or more nozzles on a certain plane or a plurality of planes at the top or on the periphery of the gasifier body. The nozzle has a simple structure and is easy to make and maintain. A fuel gas passage is disposed inside the nozzle. Oxygen can be heated by the combustion of fuel gas; and high-temperature and high-speed oxygen can directly ignite carbonaceous materials such as coal water slurry and coke oven gas. The present invention can be applied in a gasifier and then in the final process of synthesis gas preparation.
    Type: Application
    Filed: November 26, 2013
    Publication date: August 6, 2015
    Inventors: Qinghua Guo, Tao Wang, Zhenghua Dai, Guangsuo Yu, Xin Gong, Fuchen Wang, Haifeng Liu, Yifei Wang, William J. Mahoney, Sabuj Halder, Yi Ma, Jie Zhang, Zhijie Zhou, Robert J. Churpita, Christopher Herby, Jeffrey Wilson, Zhuoyong Yan
  • Controllable solids injection
    Patent number: 8992656
    Abstract: The present invention relates to formation of a controllable, high velocity, pneumatic stream of particulate solids which can be injected into a furnace containing, for instance, a liquid such as a bath of molten metal.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: March 31, 2015
    Assignee: Praxair Technology, Inc.
    Inventors: Sabuj Halder, William J. Mahoney, Bryan Bielec, Robert Churpita
  • CONTROLLABLE SOLIDS INJECTION
    Publication number: 20130160606
    Abstract: The present invention relates to formation of a controllable, high velocity, pneumatic stream of particulate solids which can be injected into a furnace containing, for instance, a liquid such as a bath of molten metal.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 27, 2013
    Inventors: Sabuj Halder, William J. Mahoney, Bryan Bielec, Robert Churpita