Protection mechanism of transition segment of bottom blowing waste heat boiler

Abstract

The invention discloses a protection mechanism of a transition segment of a bottom blowing waste heat boiler. A U-shaped bent protection steel plate is arranged at the bottom of a transition segment water cooling wall rear wall and comprises an inner protection portion, a bent portion and an outer protection portion. The bent portion is connected to the bottom of the inner protection portion and the bottom of the outer protection portion. The inner protection portion is located on the inner side of the transition segment water cooling wall rear wall. The outer protection portion is located onthe outer side of the transition segment water cooling wall rear wall. The bent portion is bent from the end connected with the inner protection portion to be wound around the bottom of the transitionsegment water cooling wall rear wall and then inclines upwards to be connected with the bottom of the outer protection portion. The inner protection portion and the outer protection portion of the U-shaped bent protection steel plate are fixed with the transition segment water cooling wall rear wall. The protection mechanism has the advantages that the inner protection portion can effectively relieve the washing function of dust flue gas to the transition segment water cooling wall rear wall; and the outer protection portion can effectively avoid the situation that the pipe wall of the unexposed face is in contact with cold air to cause low-temperature corrosion.

Description

technical field [0001] The invention relates to the technical field of bottom-blown waste heat boilers, in particular to a transition section of a bottom-blown waste heat boiler. Background technique [0002] Bottom blowing furnace is a commonly used smelting equipment. The bottom-blown waste heat boiler is a boiler that utilizes the waste heat of the flue gas discharged from the bottom-blown furnace. The flue gas inlet section of the bottom-blown waste heat boiler is located directly above the exhaust port of the bottom-blown waste heat boiler, and the flue gas inlet section of the bottom-blown waste heat boiler is also called a transition section. [0003] The transition section of the bottom-blown waste heat boiler is usually surrounded by four water-cooled walls, which are the front wall, rear wall, left wall, and right wall of the transition section water-cooled wall. The high-temperature flue gas discharged from the bottom-blown furnace enters the bottom-blown waste ...

AI Technical Summary

Problems solved by technology

Over time, the bottom-blown furnace will hit the slag adhering to the back wall of the water-cooled wall in the transition section during the rotation process, which will cause damage to the back wall of the water-cooled wall in the transition section, and the heat exchange tubes in the back wall of the water-cooled wall in the transition section need to be replaced frequently

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