An oxygen-enriched combustion boiler system and its operating method
An oxygen-enriched combustion and boiler technology, applied in the direction of combustion methods, separation methods, and controlled combustion, to achieve the effects of achieving performance and economic benefits, ensuring continuous and safe operation, and optimal performance and economic benefits
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Embodiment 1
[0047] This example uses figure 1 As shown in the boiler system structure, the flue gas outlet of the boiler furnace is sequentially connected with the flue gas purification treatment device 9, the secondary fan 2, the first oxygen injector 3 for the secondary air, the second oxygen injector 4 for the secondary air and the The burners 5 are connected in sequence, and the boiler flue gas is used as the source of the secondary air. The first oxygen injector 3 for the secondary air is set between the flue gas outlet of the secondary fan 2 and the boiler furnace, and is set close to the boiler furnace. The secondary air The second oxygen injector 4 is arranged close to the burner 5, and the distance between the second oxygen injector 4 of the secondary air and the burner 5 is 1.8 times the flue gas outlet connecting pipeline diameter of the second oxygen injector 4 of the secondary air . The purification treatment device 9 includes a dust collector and a desulfurization tower.
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Embodiment 2
[0052] This example uses figure 2 As shown in the boiler system structure, the flue gas outlet of the boiler furnace is connected to the flue gas purification treatment device 9 through a pipeline. Connect with the secondary fan 2, the first oxygen injector 3 for the secondary air, the second oxygen injector 4 for the secondary air and the burner 5 through a branch, and the outlet of the flue gas purification treatment device 9 is connected with the exhaust gas through another branch. The primary fan 6, the coal mill 7, the primary air first oxygen injector 8, the primary air second oxygen injector 10 and the burner 5 are connected in sequence.
[0053] The secondary air second oxygen injector 4 is set close to the burner 5, and the distance between the secondary air second oxygen injector 4 and the burner 5 is 1.8 times the outlet connection pipeline of the secondary air second oxygen injector 4 diameter.
[0054] The primary air first oxygen injector 8 is arranged between...
Embodiment 3
[0059] This example uses image 3 The structure of the boiler system shown is basically the same as that of the boiler system described in Embodiment 2, except that the system includes an oxygen pipeline M, one end of the oxygen pipeline M is connected to the burner 5, and the oxygen pipeline M The other end is connected to the oxygen storage tank, the first oxygen injector 3 for the secondary air, the second oxygen injector 4 for the secondary air, the first oxygen injector 8 for the primary air, and the second oxygen injector 10 for the primary air pass through the oxygen injection pipeline M1 to M4 are respectively connected to the oxygen pipeline M, and an oxygen regulating valve is set on the oxygen injection pipeline.
[0060] When the boiler system is in normal operation or an accident occurs, the first oxygen injector 3 for secondary air, the second oxygen injector 4 for secondary air, the first oxygen injector 8 for primary air, and the second oxygen injector 10 for p...
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