SINGLE-FIREBALL TANGENTIALLY-FIRING BOILER FOR THE BURNING OF ANTHRACITE
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Mar 17, 2013
filing date -
Nov 14, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tangentially-fired furnace for the burning of anthracite is disclosed. The furnace may contain a boiler with a chamber having four corners. Four burner groups located at the four corners may be configured to eject pulverized coal flow into the chamber for combustion, in order to form a single fireball substantially at the center of the chamber during combustion. Each burner group may contain a first burner which includes primary-air/rich-portion nozzles for ejecting rich-portion coal flow into a lower section of the chamber, and a second burner which includes primary-air/thin-portion nozzles for ejecting thin-portion coal flow into a higher section of the chamber.
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