Method for repairing bricks at bottom of carbonization chamber of large coke oven

Abstract

The invention discloses a method for repairing bricks at the bottom of a carbonization chamber of a large coke oven. The method comprises the following steps of: setting empty furnace number and blanking number, reinforcing furnace stays, controlling temperature of a vertical flue in a repairing area, performing gradual temperature reduction and forced temperature reduction on repairing number, setting a temperature keeping area and the repairing area in the carbonization chamber, repairing the bricks at the bottom of the carbonization chamber, heating the carbonization chamber, and detachingfurnace stay reinforcing facilities. The method has the advantages that: the bricks on a machine side and a coke side are repaired respectively, heat insulation is performed on the other side in the repairing period, repairing number adjacent carbonization chambers are subjected to empty furnace treatment, the stable temperature reduction can be realized, a repairing range is wide, and a problem that the bricks at the bottom of the carbonization chamber are cannot be repaired in a large area or a whole channel in the production process is radically solved; the repaired carbonization chamber has high thermal stability, can effectively resist thermal stress generated through temperature rise, and is safe and reliable, the service life is prolonged, furnace repairing frequency and time are reduced, the maintenance cost is reduced, and the smooth production of the coke oven is ensured; and severe environment of furnace repairing operation is improved, the construction is safe, and a burn accident is avoided.

Description

technical field [0001] The invention belongs to a coke oven, in particular to a repair method for a carbonization chamber of a coke oven. Background technique [0002] JN60 coke oven is a large-scale coke oven independently developed and designed in China. This type of coke oven occupies an extremely important position in the domestic coking industry. During the coking production of the coke oven, due to the vibration and wear of the production process, the hard metal parts slipping into the bottom of the coke oven carbonization chamber, and the deformation or falling off of the friction plate at the bottom of the coke pusher rod, the silicon brick at the bottom of the carbonization chamber is damaged. Frequent maintenance is required to keep coke oven production running smoothly. At present, the repair method for the broken brick at the bottom of the coke oven carbonization chamber is carried out in the following steps: [0003] 1. At the end of coking of the damaged fur...

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Problems solved by technology

[0010] Its disadvantages are: it can only repair the damage or breakage of silicon bricks in a small area of ​​the carbonization chamber, and cannot completely solve the problem of repairing large-area or all-channel damage to the silicon bricks at the bottom of the carbonization chamber; Due to severe temperature changes, poor thermal stability, short service life, frequent furnace repairs, high material consumption, high furnace repair costs and long time, the silica bricks seriously affect the production of coke ovens; the operating environment is harsh, the temperature in the repair area is high, and high temperatures are prone to occur burn accident

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