Multi-coal low-nitrogen direct-current coal dust combustion device
A technology of pulverized coal combustion and multiple coal types, which is applied in the direction of using a variety of fuel combustion, combustion methods, combustion types, etc., can solve the problems of poor stable combustion ability under low load, coking in the furnace, increased combustion loss, etc., and achieves convenient operation. , the effect of flexible control and simple structure
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[0039] refer to figure 1 , Figure 4 and Figure 5 In this embodiment, the four corners of the water wall 1 of the furnace chamber of the multi-coal low-nitrogen direct-flow pulverized coal combustion device are equipped with angle burner groups 2 (belonging to the pulverized coal combustion device of the four-corner tangent circle type). The device group 2 is composed of five layers of primary air nozzles installed on the water wall 1 of the furnace and the secondary air nozzles matched with them. The order from bottom to top is the secondary air nozzle A1, the primary air nozzle A, Secondary air vent AB, primary air vent B, secondary air vent BC, primary air vent C, secondary air vent C1, secondary air vent C2, secondary air vent C3, primary air vent D, secondary air vent DE , Primary air nozzle E, secondary air nozzle E1, and secondary air nozzle E2, among which, including the secondary air nozzle C1 and below is the lower group of burners, including the secondary air noz...
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