Patents by Inventor Min-Da Ho

Min-Da Ho 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).

  • Combustion method for simultaneous control of nitrogen oxides and products of incomplete combustion
    Patent number: 5242295
    Abstract: A combustion method for the simultaneous control of PICs and NO.sub.x wherein the combustion is carried out in two combustion zones. High velocity oxidant is injected into the second combustion zone to aspirate exhaust from the first combustion zone prior to combustion within the second combustion zone. The first combustion zone is preferably operated under pyrolytic conditions.
    Type: Grant
    Filed: November 3, 1992
    Date of Patent: September 7, 1993
    Assignee: Praxair Technology, Inc.
    Inventor: Min-Da Ho
  • Combustion method for simultaneous control of nitrogen oxides and products of incomplete combustion
    Patent number: 5213492
    Abstract: A combustion method for the simultaneous control of PICs and NO.sub.x wherein the combustion is carried out in two combustion zones. High velocity oxidant is injected into the second combustion zone to aspirate exhaust from the first combustion zone prior to combustion within the second combustion zone. The first combustion zone is preferably operated under pyrolytic conditions.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: May 25, 1993
    Assignee: Praxair Technology, Inc.
    Inventor: Min-Da Ho
  • Recirculation and plug flow combustion method
    Patent number: 5186617
    Abstract: A combustion method employing fuel-rich combustion with an upstream recirculation zone followed by a downstream plug flow zone enabling rapid heating and processing without excessive NO.sub.x generation or particulate emissions.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: February 16, 1993
    Assignee: Praxair Technology, Inc.
    Inventor: Min-Da Ho
  • Method for operating an incinerator with simultaneous control of temperature and products of incomplete combustion
    Patent number: 5176086
    Abstract: A method for operating an incinerator wherein fuel is provided into the incinerator separate from combustible waste and upon an increase in oxygen demand, initially refraining from proportionately increasing the oxygen provided into the incinerator and responding by decreasing the flow of fuel so as to control the generation of PICs without substantially raising the incinerator temperature. The oxygen flow is increased when the fuel flowrate has been reduced to a predetermined minimum should this occur.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: January 5, 1993
    Assignee: Praxair Technology, Inc.
    Inventors: Steven D. Clark, Min-Da Ho
  • Opposed fired rotary kiln
    Patent number: 5102330
    Abstract: A rotary kiln system wherein oxidant injection means are positioned at each stationary end and inject oxidant toward each other creating gas recirculation within the rotary kiln for improved mixing, combustion efficiency and temperature uniformity.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: April 7, 1992
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventor: Min-Da Ho
  • Method for combusting wet waste
    Patent number: 5000102
    Abstract: A method for combusting wet waste wherein heat released by the combustion of combustibles from dry waste is recirculated by operation of high velocity oxidant in order to dry wet waste.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: March 19, 1991
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventor: Min-Da Ho
  • Multiple oxidant jet combustion method and apparatus
    Patent number: 4969814
    Abstract: Method and apparatus to carry out combustion with more uniform temperature distribution and with reduced NO.sub.x generation comprising oxidant injection through a nozzle having straight and angled orifices with aspiration into the angled oxidant and downstream consolidation of the oxidant streams.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: November 13, 1990
    Assignee: Union Carbide Corporation
    Inventors: Min-Da Ho, Paul J. Liszewski
  • Combustion process having improved temperature distribution
    Patent number: 4957050
    Abstract: A method for carrying out combustion in a combustion zone using oxygen or oxygen-enriched air as the oxidant wherein atomized liquid is provided to the combustion zone separate from oxidant and combustible vapors, causing it to be distributed throughout the combustion zone and then, especially after its vaporization, uniformly provided to the combustion reaction with consequent uniform temperature moderation, and resulting in reduced NO.sub.x generation and reduced refractory damage.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: September 18, 1990
    Assignee: Union Carbide Corporation
    Inventor: Min-Da Ho
  • Low NO.sub.x high efficiency combustion process
    Patent number: 4863371
    Abstract: A process to combust fuel and oxidant at high efficiency and with low NO.sub.x generation even when the fuel has non-uniform characteristics and the oxidant is pure oxygen, wherein fuel and oxidant are first combusted within a high velocity oxidant-rich jet, fuel is mixed with combustion products in a recirculation zone and the mixture is aspirated into the oxidant-rich jet and combusted in a diffuse secondary flame at the periphery of the oxidant-rich jet.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: September 5, 1989
    Assignee: Union Carbide Corporation
    Inventor: Min-Da Ho