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Method for low load operation of a coal-fired furnace

  • US 4,434,727 A
  • Filed: 06/13/1983
  • Issued: 03/06/1984
  • Est. Priority Date: 04/13/1979
  • Status: Expired due to Fees
First Claim
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1. In a pulverized coal-fired furnace equipped with a plurality of individual burners wherein each of the burners provide a passageway through which a mixture of pulverized coal and primary air passes into the furnace, a method of operating at least one of said burners, comprising:

  • a. during operation of the furnace at normal loads, discharging the mixture of pulverized coal and primary air passing through said burner into the furnace as a single stream coal-air stream;

    b. during operation of the furnace at low loads, splitting the mixture of pulverized coal and primary air discharging from said burner into a first and second coal-air substream;

    c. turning at least one of said substreams away from the other so as to extablish a divergent angular relationship between said first and second coal-air substreams; and

    d. directing said first and second coal-air substreams into the furnace in said divergent angular relationship to each other.

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