Dry quenching furnace top water seal tank lining brick and laying method

Abstract

The invention provides a dry quenching furnace top water seal tank lining brick and laying method. The shape of a water seal tank lining brick is changed, and a water seal tank is covered with a fire-resistant material. The lining brick is of an L-shaped integral structure composed of a bottom surface and a standing surface, the lining brick is a trapezoid which is wide in the front and narrow in the rear when looking down, an inner angle where the bottom surface and the standing surface is connected has an arc, and the upper end and the lower end of the standing surface both have slopes. When the lining brick is laid, a 90-110 mm inflation seam is reserved between the outer surface of the tank bottom of the water seal tank and the bottom surface of the lining brick, and the seam is filled with ceramic fibrofelt; the upper end of the standing surface of the lining brick is 13-18 mm lower than the upper end of the water seal tank. According to the invention, the condition that the water seal tank is in direct contact with high temperature flue gas is effectively avoided, the phenomenon of side wall burning cracking is avoided, and the service life of the water seal tank is prolonged; the corrosion of an furnace opening brick is avoided, and the leakproofness of a dry quenching furnace is improved; the content of H2 in the furnace is prevented from exceeding the standard, and safe and stable running of dry quenching is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of coking equipment, and in particular relates to a water-seal tank lining brick on the top of a dry quenching coke furnace and a masonry method. Background technique [0002] The original design of the water seal tank on the top of the CDQ oven is installed in direct contact with the bottom surface of the refractory lining bricks at the mouth of the CDQ coke oven. The lining bricks use ordinary cuboid bricks, while the two side walls of the water seal tank are not lined. bricks, so the side wall of the water seal tank is in direct contact with the high-temperature flue gas in the furnace. During operation, due to the large temperature difference between the inside and outside of the water seal tank, the stress concentration on the side wall of the water seal tank results in cracks appearing on the side wall, leading to CDQ Water leakage in the furnace not only causes corrosion of the bricks at the mouth of ...

AI Technical Summary

Problems solved by technology

[0002] The original design of the water seal tank on the top of the CDQ oven is installed in direct contact with the bottom surface of the refractory lining bricks at the mouth of the CDQ coke oven. The lining bricks use ordinary cuboid bricks, while the two side walls of the water seal tank are not lined. bricks, so the side wall of the water seal tank is in direct contact with the high-temperature flue gas in the furnace. During operation, due to the large temperature difference between the inside and outside of the water seal tank, the stress concentration on the side wall of the water seal tank results in cracks appearing on the side wall, leading to CDQ Water leakage in the furnace not only causes corrosion of the bricks at the mouth of the CDQ coke oven and affects the sealing of the CDQ coke oven, but also a water-gas reaction occurs in the furnace, H 2 The content exceeds the standard, which directly affects the safe and stable operation of coke quenching production

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