Anti-slagging swirling flow pulverized coal combustion device suitable for industrial pulverized coal boiler
A pulverized coal boiler and pulverized coal combustion technology, applied in the direction of burner, combustion method, combustion type, etc., can solve problems such as slagging in the furnace, and achieve the effects of slowing down slagging, preventing slagging, and preventing wall ash
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specific Embodiment approach 1
[0022] Specific implementation mode one: combine Figure 1 to Figure 3 This embodiment is described. The anti-slagging swirling pulverized coal combustion device suitable for industrial pulverized coal boilers described in this embodiment includes a combustion system and a flue gas recirculation system. The combustion system consists of a burner and a pre-combustion system. The flue gas recirculation system includes a recirculation fan 5, a recirculation flue gas branch pipe 7, a recirculation flue gas pipe valve 8, a plurality of recirculation flue gas nozzles 9 and a recirculation flue gas pipe 10. The burner is connected to the front wall of the furnace 6 through the pre-combustion chamber 4, and a plurality of recirculation flue gas nozzles 9 are uniformly arranged on the inlet end surface of the pre-combustion chamber 4 along the circumferential direction, and the axes of the recirculation flue gas nozzles 9 and the pre-combustion chamber 4 The angle between the vertical ...
specific Embodiment approach 2
[0023] Specific implementation mode two: combination Figure 1 to Figure 3 Describe this embodiment, the burner of an anti-slagging swirl pulverized coal combustion device suitable for industrial pulverized coal boilers in this embodiment includes a primary air duct 1, an inner secondary air channel 2, an inner secondary air swirl device 2-1, the outer secondary air channel 3 and the outer secondary air cyclone 3-1, the primary air pipe 1 is inserted in the inner secondary air channel 2, and the inner secondary air channel 2 is inserted in the outer secondary air In the channel 3 , the inner secondary air cyclone 2 - 1 is arranged in the inner secondary air channel 2 , and the outer secondary air cyclone 3 - 1 is arranged in the outer secondary air channel 3 . Other components and connections are the same as those in the first embodiment.
specific Embodiment approach 3
[0024] Specific implementation mode three: combination Figure 1 to Figure 3 Describe this embodiment, the primary air duct 1, the inner secondary air channel 2, and the outer secondary air channel 3 of the anti-slagging swirl pulverized coal combustion device suitable for industrial pulverized coal boilers described in this embodiment are coaxially arranged . Other components and connections are the same as those in the second embodiment.
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