Flue and boiler

Abstract

The invention relates to a flue and a boiler. The flue comprises a furnace mouth section flue body, the furnace mouth section flue body comprises a movable section flue body, a fixed section flue body, a moving device, a lifting supporting device and a fixed connecting device, and the movable section flue body is communicated with the fixed section flue body; the lifting supporting device is used for supporting the fixed section flue body in the height direction and fixing the fixed section flue body to the height position where the fixed section flue body is connected with the movable section flue body through the fixed connecting device, and after the fixed connecting device is disconnected with the fixed section flue body, the fixed section flue body is driven to descend through descending of the lifting supporting device in the height direction, so that the fixed section flue body is disconnected from the movable section flue body; and the movable section flue body is connected with the moving device, and the movable section flue body is driven by the moving device to move. The invention further discloses a boiler with the flue. The flue can be partially replaced or wholly replaced.

Description

technical field [0001] The invention relates to the technical field of flue, in particular to a flue and a boiler. Background technique [0002] The converter vaporization flue is a device that recovers the sensible heat of the high-temperature flue gas generated during the converter steelmaking process, and lowers the flue gas to a certain temperature before sending it to the subsequent dust removal system. Due to the large amount of high-temperature flue gas generated during the converter blowing process, the flue gas temperature is usually as high as 2000 ° C, and the reaction in the converter is intense, and there is a risk of slag splashing, and the flue at the furnace mouth is the closest part to the converter except for the skirt. , The flue at the furnace mouth is more susceptible to the influence of the converter, resulting in a shorter service life of the flue at the furnace mouth, and it needs to be replaced after one to two years. In addition, the bottom of the ...

AI Technical Summary

Problems solved by technology

Due to the large amount of high-temperature flue gas generated during the converter blowing process, the flue gas temperature is usually as high as 2000 ° C, and the reaction in the converter is intense, and there is a risk of slag splashing, and the flue at the furnace mouth is the closest part to the converter except for the skirt. , the flue at the furnace mouth is more susceptible to the influence of the converter, resulting in a shorter service life of the flue at the furnace mouth, and it needs to be replaced after one to two years

In addition, the bottom of the flue at the furnace mouth section is the closest to the furnace mouth of the converter, which is more prone to water leakage, damage, etc., and regular repair welding operations or replacements are required; however, due to the narrow space of the furnace mouth section, only the bottom of the furnace mouth section flue It is inconvenient to carry out maintenance or replacement. In the prior art, the method of replacing the entire flue at the mouth of the furnace is usually adopted, but this method is time-consuming and laborious, and it cannot be replaced in sections according to the damage or water leakage of the flue, and the replacement cost higher

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