Nozzle tip of pulverized coal burner

Abstract

The present invention relates to a nozzle tip of a pulverized coal burner, capable of solving an abrasion phenomenon and a deviation phenomenon of a flame stabilizer due to flow of pulverized coal. The nozzle tip of a pulverized coal burner comprises: an inner tube body having a first passage through which pulverized coal is introduced and moved; an outer tube body installed to be spaced apart from the inner tube body on the outside of the inner tube body; one or more guide plates installed to divide the first passage; and a plurality of flame stabilizers arranged on upper and lower sides of the inside of the inner tube body in series. In the flame stabilizers, a side facing a direction in which pulverized coal flows through the first passage is formed as an inclined surface inclined toward a center of the inner tube body.

Description

technical field [0001] The present invention relates to a nozzle tip of a pulverized coal burner, in particular to a nozzle tip of a pulverized coal burner, the nozzle tip of the pulverized coal burner can improve the The wear phenomenon and detachment phenomenon of the flame stabilizer. Background technique [0002] Generally, in a boiler adopting a tangential combustion method, the nozzle head of the coal burner is arranged on the edge of the interior of the combustion chamber. [0003] In addition, the nozzle tip of the coal burner can change direction when starting the boiler. For example, the change of the up and down direction of the nozzle head can adjust the flame temperature inside the combustion chamber, and it can also be changed from the center of the combustion chamber to the clockwise or counterclockwise direction of the flame, so that the direction in which the coal as fuel is supplied Change. [0004] refer to Figure 1 to Figure 3 The configuration of a c...

AI Technical Summary

Problems solved by technology

[0013] However, if image 3 As shown, there is a problem that one side of the sharing rod 60 collides head-on with the pulverized coal flowing through the guide vane 50, thereby causing partial or whole wear.

[0014] In addition, there is a problem in that the nozzle head 20 is exposed to high radiant heat inside the combustion chamber, which generates cracks in the welded portion of the sharing rod 60, causing the sharing rod to come off.

[0015] As mentioned above, if the sharing rods wear or fall off, the nozzle head can no longer perform the specific function as a nozzle head. The function of pulling the flame towards the side of the nozzle head, thus, problems arise in regulating the flame temperature and ensuring nitrogen oxides (NOx)

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