Method for replacing bottom bricks of coke oven carbonization chamber

Abstract

The invention belongs to the field of coke oven maintenance, and in particular relates to a method for replacing bottom bricks of a coke oven carbonization chamber. The method comprises the followingsteps: setting a carbonization chamber adjacent to a coke oven carbonization chamber to be maintained as a buffer furnace, wherein the buffer furnace is used for heat preservation of the coke oven carbonization chamber to be maintained; controlling coke oven machine side standard temperature not lower than 1200DEG C and coke oven machine coke side standard temperature not lower than 1250 DEG C; removing old bricks from the coke oven carbonization chamber to be maintained from the machine side first then the coke side; cleaning the bottom of the coke oven carbonization chamber to be maintainedwith the old bricks removed; paving the coke oven carbonization chamber to be maintained with the bottom cleaned with new bricks, banking up, heating, performing heat preservation for 2 to 3 hours, and finally loading coal to complete the replacement of the bottom bricks of the coke oven carbonization chamber. According to the invention, as the buffer furnace is arranged, and banking up and heating of the furnace are controlled, so that the coke oven machine side standard temperature is controlled not lower than 1200DEG C, and the coke oven machine coke side standard temperature is controllednot lower than 1250 DEG C. When in replacing of the bottom bricks of the coke oven carbonization chamber, the temperature in the carbonization chamber does not obviously drop, and the bottom bricks ofthe coke oven carbonization chamber can be replaced without stopping production of the whole 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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