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Method for reducing NOx during combustion of coal in a burner

United States Patent

April 15, 2008
View the Complete Patent at the US Patent & Trademark Office
An organically complexed nanocatalyst composition is applied to or mixed with coal prior to or upon introducing the coal into a coal burner in order to catalyze the removal of coal nitrogen from the coal and its conversion into nitrogen gas prior to combustion of the coal. This process leads to reduced NOx production during coal combustion. The nanocatalyst compositions include a nanoparticle catalyst that is made using a dispersing agent that can bond with the catalyst atoms. The dispersing agent forms stable, dispersed, nano-sized catalyst particles. The catalyst composition can be formed as a stable suspension to facilitate storage, transportation and application of the catalyst nanoparticles to a coal material. The catalyst composition can be applied before or after pulverizing the coal material or it may be injected directly into the coal burner together with pulverized coal.
Zhou; Bing (Cranbury, NJ), Parasher; Sukesh (Lawrenceville, NJ), Hare; Jeffrey J. (Provo, UT), Harding; N. Stanley (North Salt Lake, UT), Black; Stephanie E. (Sandy, UT), Johnson; Kenneth R. (Highland, UT)
Headwaters Heavy Oil, LLC (South Jordan, UT)
11/ 129,833
May 16, 2005
REFERENCE TO GOVERNMENT CONTRACT The claimed invention was made with Government support under Contract No. DE-FG26-02NT41618 awarded by the United States Department of Energy. The Government has certain rights in this invention.