Pulverized coal burner

Abstract

The invention discloses a pulverized coal burner which comprises a central pipe, a rotational flow air pipe, a pulverized coal pipe and an axial flow air pipe which are coaxially arranged together ina sleeving mode from inside to outside, and an oil gun channel, a rotational flow air channel, a pulverized coal air channel and an axial flow air channel are isolated from inside to outside through the central pipe, the rotational flow air pipe, the pulverized coal pipe and the axial flow air pipe. The central pipe is formed by splicing a head end and a tail end, and the head end of the central pipe is separably connected to the tail end. When the burner is used, if the head end is seriously damaged and cannot be repaired under a high-temperature condition, only the head end needs to be detached and replaced, and the whole central pipe does not need to be replaced, so that the use cost is reduced. When the head end is not seriously damaged and can be repaired under the high-temperature condition, the head end can be detached and then taken to a proper place to be subjected to surfacing repair without being limited by field conditions, and the operation is more convenient. A spare headend can be installed after the head end is detached, then the work is recovered, and the damaged head end is intensively repaired later, so that the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of burner equipment, in particular to a pulverized coal burner. Background technique [0002] The existing pulverized coal burners are all made of carbon steel and other metal materials. During operation, the front end of the burner is significantly reduced in hardness and wear resistance in a high temperature environment, resulting in frequent damage to the front end of the burner due to the impact of pulverized coal. It is the front end of the center pipe as the ignition point, and the frequency of damage is extremely high, which requires frequent surfacing repair or replacement, and the center pipe is located in the innermost part of the burner, which is extremely inconvenient to operate, and requires a lot of time to waste, resulting in low work efficiency. The status quo of high cost of use. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a pulverized coal burner to solve t...

AI Technical Summary

Problems solved by technology

[0002] Existing pulverized coal burners are all made of metal materials such as carbon steel. When working, the hardness and wear resistance of the front end of the burner decrease significantly in high temperature environments, resulting in frequent damage to the front end of the burner due to the impact of pulverized coal. It is the front end of the central tube as the ignition point. The frequency of damage is extremely high, and frequent surfacing repairs or replacements are required. The central tube is located at the innermost part of the burner, which is extremely inconvenient to operate and requires a lot of wasted time, resulting in low work efficiency and The current situation of high cost of use

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