Powdered fuel conversion systems and methods

Patent No. 9,039,407

Issued: May 26, 2015
Filed: April 7, 2009
Term Extension: 814 days

Inventor: McKnight; James K. (Ithaca, NY), Bacorn; Edward (Lansing, NY), White; Ken W. (Ithaca, NY)


The burner preferably exclusively burns substantially explosible solid fuels and preferably has instant ON-OFF thermostat control, wastes no energy preheating the enclosure or external air supply, achieves stable combustion the moment the powder-air mix is ignited in our burner, is used in the upward vertical mode except for oil burner retrofits, burns a solid fuel in a single-phase regime as if it were a vaporized liquid or gas, is designed to complete combustion within the burner housing itself rather than in a large, high temperature furnace enclosure which it feeds, has an ultra-short residence time requirement, is a recycle consuming burner with self-contained management of initially unburned particles, is much smaller, simpler and lower cost, has a wider dynamic range/turndown ratio, is more efficient in combustion completeness and thermal efficiency, and operates with air-fuel mix approximately at the flame speed.

Reference to Related Applications

This application claims one or more inventions which were disclosed in U.S. Provisional Application No. 61/042,996, filed Apr. 7, 2008, entitled "POWDERED FUEL CONVERSION SYSTEMS AND METHODS" and U.S. Provisional Application No. 61/074,244, filed Jun. 20, 2008, entitled "POWDERED FUEL CONVERSION SYSTEMS AND METHODS". The benefit under 35 USC 119(e) of the United States provisional applications is hereby claimed, and the aforementioned applications are hereby incorporated herein by reference.

This is a continuation-in-part patent application of co-pending PCT Patent Application No. PCT/US2007/024044, entitled "POWDERED FUELS, DISPERSIONS THEREOF, AND COMBUSTION DEVICES RELATED THERETO", filed Nov. 16, 2007, which claims priority to U.S. Provisional Application No. 60/859,779, filed Nov. 17, 2006, U.S. Provisional Application No. 60/868,408, filed Dec. 4, 2006, and U.S. Provisional Application No. 60/993,221, filed Sep. 10, 2007. The above-mentioned applications are herein incorporated by reference.


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