A method for replacing the bottom brick of the coke oven carbonization chamber

Abstract

The invention belongs to the field of coke oven maintenance, and in particular relates to a method for replacing a bottom brick of a carbonization chamber of a coke oven. The carbonization chamber adjacent to the carbonization chamber of the coke oven to be repaired is set as a buffer furnace, and the buffer furnace is used to keep warm the furnace to be repaired; the standard temperature of the coke oven machine side is not lower than 1200 °C, and the standard temperature of the coke side is not lower than 1250 °C ℃; clean the old bricks in the carbonization chamber to be repaired by using the machine first and then the coke: clean the bottom of the carbonization chamber of the coke oven to be repaired after the old bricks are removed; lay new bricks in the carbonization chamber of the coke oven to be repaired after the bottom cleaning operation, and then The stuffy furnace is heated up, followed by heat preservation for 2 to 3 hours, and finally coal is charged to complete the replacement of the bottom brick of the carbonization chamber of the coke oven. Because the buffer furnace is provided in the present invention, and the temperature rise of the stuffy furnace is controlled, the standard temperature on the machine side of the coke oven is not lower than 1200°C, and the standard temperature on the coke side is not lower than 1250°C. When the coke oven bottom brick is replaced, the temperature in the carbonization chamber will not drop significantly, and the coke oven bottom brick can be replaced without shutting down the entire coke oven.

Description

technical field [0001] The invention belongs to the field of coke oven maintenance, and in particular relates to a method for replacing a bottom brick of a carbonization chamber of a coke oven. Background technique [0002] JN type coke oven refers to the general term for a series of coke ovens designed by China Anshan Coking Refractory Design and Research Institute. Including JN43 coke oven, JN55 coke oven and JN60 coke oven. [0003] The coke oven is the basic equipment of the coking plant, and it is a thermal equipment with complex structure and continuous production. The main structure of the coke oven includes a combustion chamber, a carbonization chamber, a regenerator, a roof area, and a chute area. The coke oven carbonization chamber is an important part of the coke oven and is a thermal space where coking coal is converted into product coke. During normal production, the work of the carbonization chamber is cyclical, and the temperature of the vertical flue of the...

AI Technical Summary

Problems solved by technology

The bottom of the carbonization chamber is an important part of the coke pushing rod and coke moving friction. During the production process, the furnace bottom brick is very prone to damage, resulting in production problems such as large coke pushing current and difficulty in coke pushing.

[0005] The shutdown of the furnace for inspection not only affects the production output, but also causes the temperature difference stress change due to the cooling of the furnace body, resulting in secondary damage to the furnace body

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