Water seal device suitable for high-temperature and high-thermal environment of dry quenching coke furnace

Abstract

The invention relates to a water seal device suitable for a high-temperature and high-thermal environment of a dry quenching coke furnace, and belongs to the technical field of coke furnaces. The water seal device is used for sealing a red coke loading opening of the dry quenching coke furnace. According to the technical scheme, the water seal device consists of a permanent fire-resistant outer tank and a stainless steel inner tank, wherein according to the permanent fire-resistant outer tank, arc-shaped tank bricks and arc-shaped tank bricks with overflow weirs are bonded and built by using refractory mortar to form an annular tank; the stainless steel inner tank is manufactured by punching or welding a thin heat-resisting stainless steel plate to form an annular tank; the stainless steel inner tank is embedded into the permanent fire-resistant outer tank; the outer wall of the stainless steel inner tank is in close fit with the inner wall of the permanent fire-resistant outer tank; and the stainless steel inner tank is connected with the permanent fire-resistant outer tank in a detachable mode without connecting pieces. The water seal device has the characteristics of high-temperature resistance, thermal impact resistance performance, long service life and good sealing effect; and the damaged permanent fire-resistant outer tank can be coated and repaired simply by using the refractory mortar, and the stainless steel inner tank can be easy to replace, so that the construction process is safe and simple, and the water seal device has high practical value and obvious economic and social benefits.

Description

technical field [0001] The invention relates to a water sealing device for dry quenching coke ovens, belonging to the technical field of coke oven equipment. Background technique [0002] CDQ coke oven water seal is a sealing device for red coke loading inlet of CDQ furnace. It cooperates with the furnace cover of the loading device to prevent the gas in the CDQ furnace from escaping or the air outside the furnace from entering the furnace. Its principle is to use the static pressure of water at a certain height in the annular groove to prevent the positive pressure gas in the furnace from breaking down the water layer or prevent the negative pressure in the furnace from causing the air outside the furnace to counterattack the water layer, so as to achieve the purpose of sealing. Since the water seal is used in the high temperature and thermal shock environment of CDQ coke ovens, it is required to have high temperature resistance and sealing performance, that is, no water le...

AI Technical Summary

Problems solved by technology

In this case, due to frequent fluctuations in the ambient temperature, the water seal will burst or the weld seam will crack, and repair work such as welding cannot be performed after cracking.

At the same time, after cracking, the water in the water seal tank pours into the hot CDQ furnace, causing serious safety hazards and seriously affecting the production of CDQ. Especially in the process of cooling down the CDQ furnace, it will cause serious damage to the water seal. Replacement frequency is high

Since the water seal is an integrated structure, it must be replaced as a whole, which affects production, and because of the large quality of the device, it is difficult to hoist and install and align, and the construction environment is harsh, so there is a greater risk in the replacement process

There is another kind of water seal. A layer of refractory material is poured on the side of the inner wall that is in contact with high temperature. Although it has a certain protective effect on the water seal, it still has the disadvantages that it needs to be replaced as a whole once it leaks, and it is difficult to maintain and replace it. Structural parts are easy to fall off and enter the CDQ furnace under high temperature baking, causing foreign matter failure

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