Sealing method of pot-type furnace volatile matter main channel and inner sealing device used in method

Abstract

The invention discloses a sealing method of a pot-type furnace volatile matter main channel and an inner sealing device used in the method. A pot-type furnace wall is formed by a plurality of fireproof material layers, the volatile matter main channel is arranged on the top of a pot-type furnace, a main channel cleaning hole crossing the overall pot-type furnace wall is formed in the volatile matter main channel, the inner sealing device is additionally arranged at the fireproof material layer at the innermost layer of the pot-type furnace wall located at the main channel cleaning hole, a channel between outer furnace cracks and the volatile matter main channel is separated, and therefore air seeping into the cracks can not be combined with volatile matter in the volatile matter main channel for combustion. The sealing method and the inner sealing device well solve the problems that cracks exist between layers due to the fact that the coefficients of thermal expansion of different fireproof materials in the pot-type furnace wall are different, air can enter the volatile matter main channel through the cracks to be combined with the volatile matter for combustion to cause fire on the top of the furnace, or the volatile matter downwards flees into an observation hole under the negative pressure in the furnace and is combined with external air which seeps into the furnace for combustion, a heat preservation brick layer deforms due to burning loss, and combustion of the furnace is 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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