Densed-phase back-flushing split-pole NOx combustion
A combustion method and multiple technologies, applied in the field of boilers, can solve the problems such as the lack of oxygen in the water wall of the main combustion area, affecting the intensified combustion of pulverized coal, and increasing the flow deviation of the furnace outlet, so as to eliminate negative problems in the furnace, Conducive to the effect of controlling the generation of NOx and strengthening the reduction effect
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[0014] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.
[0015] As shown in FIG. 1 , the principle diagram of the dense phase large reverse blowing multi-stage NOx combustion system of this embodiment includes a main burner group, an overburning air nozzle group, and a reducing air nozzle group. The main burner group is composed of multiple layers of primary and secondary air nozzles alternately. The layout of the secondary air nozzles is the same as that of the usual four-corner tangential combustion system. The pulverized coal burner is used to divide the primary air into two streams of thick and thin in the horizontal dir...
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