Sealing method and internal sealing device used for volatile matter main channel of tank furnace

Abstract

The invention discloses a method for sealing the main channel of volatile matter in a pot furnace and an internal sealing device used therefor. The wall body of the pot furnace targeted by the method is composed of multiple layers of refractory material layers, and the top of the pot furnace is provided with a volatile matter The main road, the main road of volatiles is equipped with a main road cleaning hole that goes over the entire tank furnace wall. An inner sealing device is added at the innermost refractory layer of the tank furnace wall at the main road cleaning hole to isolate the outer layer of the furnace. The passage between the cracks in the body and the main volatile channel prevents the air infiltrated from the cracks from combining with the volatiles in the main volatile channel. The invention perfectly solves the cracks between the layers caused by the inconsistency of the thermal expansion rates of different refractory material layers inside the tank furnace wall, so that the air enters the volatile matter main channel from the cracks and combusts with the volatile matter to cause the furnace top to catch fire. Or the volatile matter escapes downward from the crack into the observation hole under the negative pressure in the furnace, and burns together with the air leaking in from the outside of the furnace, causing the insulation brick layer to burn and deform, and the furnace burns out of control.

Description

technical field [0001] The invention relates to a method for sealing a volatile matter main channel of a tank type furnace and an inner sealing device used therefor, belonging to the technical field of sealing the volatile matter main channel of a tank type furnace. Background technique [0002] The volatile matter emitted in carbon production is a harmful combustible gas. In order to save energy and protect the environment, the current practice is to use the volatile matter in the tank furnace as an auxiliary fuel from the tank body to the fire channel for combustion. The volatile matter produced in the process of carbon production is collected by the volatile matter main channel on the top of the tank furnace, and the volatile matter in the volatile matter main channel is introduced downward into each layer of fire through the volatile matter branches arranged in the front and rear walls of the tank type furnace. Burning deep in the observation port. The main channel of v...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a sealing method for the volatile matter main channel of the tank type furnace and the internal sealing device used to solve the problem of the different inside of the tank type furnace wall. The inconsistent thermal expansion rate of the refractory material layer leads to cracks between the layers, preventing air from entering the volatile main channel from the cracks and combusting with the volatiles, causing the top of the furnace to catch fire; or preventing the volatiles from flowing through these cracks under the negative pressure in the furnace. It enters the observation hole downwards and combusts with the air leaking in from the outside of the furnace, causing the insulation brick layer to be burned and deformed, and the furnace combustion is out of control

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