Cyclone after-burner for cyclone reburn NO.sub.x reduction

Details Cyclone after-burner for cyclone reburn NO.sub.x reduction Cyclone after-burner for cyclone reburn NO.sub.x reduction

1995-10-27

1996-11-12

Kamen, Noah P.

Liquid heaters and vaporizers

Water tube

Coil

431160, 431284, 110210, F22B 3710

Patent

active

055729568

ABSTRACT:
A cyclone after-burner for cyclone reburn NO.sub.x reduction in a furnace has a retractable fuel pipe inside a lance extending along the cylindrical axis of the cyclone to a point near the re-entrant throat. The lance has a water-cooled jacket that is refractory covered to reduce heat absorption. The fuel pipe is adapted to provide gas, oil or pulverized coal for combustion in the furnace.

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Technical Paper: "Long Term NO.sub.x Emissions Results with Natural Gas Reburning on a Cyclone Fired Boiler"; R. W. Borio, R. D. Lewis, S. Durrani, A. Lookman; Oct. 1992.
Technical Paper: "Coal Reburning Technology for Reducing NO.sub.x in Cyclone Boilers"; A. S. Yagiela, G. J. Maringo, R. J. Newell, H. Farzau; Aug., 1992; pp. 1-13.
Technical Paper: "Update on Coal Reburning Technology for Reducing NO.sub.x in Cyclone Boilers"; A. S. Yagiela, G. J. Maringo, R. J. Newell, H. Farzan; Apr., 1991; pp. 1-11.
Technical Paper: "Pilot Evaluation of Reburning for Cyclone Boiler NO.sub.x Control"; H. Farzau, L. Rodgers, G. Maringo, A. Kokkinos, J. Pratapas; Mar., 1989; pp. 1-25.

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