| 摘要 |
Two of the four furnace walls (2,3) contain opposite-facing swirl burners (4) and air-nozzles (9) pointing at right angles to the furnace wall. The swirl burners have a central coal-dust-primary air current surrounded by a twisted secondary air current. The swirl burners and or air nozzles are positioned on one or more planes above each other, and each asymmetrically within a plane in relation to a center plane (11), and each on an imaginary circle (13) within the furnace (1),
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