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Fuel-flexible burner apparatus and method for fired heaters

United States Patent

9,593,847
March 14, 2017
View the Complete Patent at the US Patent & Trademark Office
A burner apparatus for a fired heating system and a method of burner operation. The burner provides stable operation when burning gas fuels having heating values ranging from low to high and accommodates sudden wide changes in the Wobbe value of the fuel delivered to the burner. The burner apparatus includes a plurality of exterior fuel ejectors and has an exterior notch which extends around the burner wall for receiving and combusting a portion of the gas fuel. At least a portion of the hot combustion product gas produced in the exterior notch is delivered through channels formed in the burner wall to the combustion area at the forward end of the burner. As the Wobbe value of the gas fuel decreases, one or more outer series of addition ejectors can be automatically activated as needed to maintain the amount of heat output desired.
Zink; Darton J. (Tulsa, OK), Isaacs; Rex K. (Collinsville, OK), Jamaluddin; A. S. (Jamal), (Sugar Land, TX), Benson; Charles E. (Windham, NH), Pellizzari; Roberto O. (Groton, MA), Little; Cody L. (Coweta, OK), Marty; Seth A. (Broken Arrow, OK), Imel; K. Parker (Coweta, OK), Barnes; Jonathon E. (Broken Arrow, OK), Parker; Chris S. (Tulsa, OK)
ZEECO, INC. (Broken Arrow, OK)
14/ 197,333
March 5, 2014
This invention was made with government support under Contract No. DE-EE0000069 awarded by the United States Department of Energy. The government has certain rights in the invention.