Intensive-classification low-NOx pulverized coal burner
A pulverized coal burner and pulverized coal technology, applied in the direction of burners, burners burning powder fuel, combustion methods, etc., can solve the problems of high fly ash combustibles, combustion delay, etc., and achieve good ignition stability and combustion delay Burning, adaptable effects
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[0012] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings:
[0013] The enhanced graded low-NOx pulverized coal burner of the present invention is mainly composed of a primary air passage 1, a secondary air passage in a direct current 2, a secondary air passage in a swirling flow 3, a secondary air passage in a swirling flow 4, and a pulverized coal equalizer 5. The pulverized coal separator 6 is constituted; the pulverized coal equalizer 5 is set on the inlet side of the straight pipe section of the primary air channel 1, and the pulverized coal separator 6 is set on the outlet side. The primary air channel 1 is surrounded by a DC internal secondary air. Passage 2, the outer wall of the secondary air passage 2 in the direct current is provided with a swirling inner secondary air passage 3 that merges into the same passage and is injected into the furnace. The outlet of the primary air passage 1 is provided with a p...
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