Method of repairing coke oven

A method of repairing a part of a combustion chamber brick wall of a coke oven, comprising the steps of:

• heat-insulating a repair space in said oven;
• dividing a brick wall in a portion to be repaired into a plurality of layers stacked one above another;
• dismantling and removing said brick wall in said to be repaired portion;
• manufacturing refractory assemblies outside said oven by combining a plurality of bricks together to form a shape corresponding to each of said stacked layers in a one-to-one relationship;
• carrying said refractory assemblies into said oven one by one using an apparatus comprising i) an in-oven beam fixed to ceiling hanging hardware installed through eyeholes formed in the combustion chamber ceiling of said oven, ii) an ex-oven beam extending from said in-oven beam to the outside of said oven, iii) a suspension device for lifting up and down a suspended load and moving along said in-oven beam and said ex-oven beam, and iv) a brick gripping device suspended from said suspension device;
• and
• building said brick wall in said to be repaired portion with said refractory assemblies.

A method of repairing a part of a combustion chamber brick wall of a coke oven, wherein said coke oven is of the two-divided type having a horizontal flue at the top of a combustion chamber, said method comprising steps of:

• heat-insulating a repair space in said oven by installing heat-insulating materials to cover outer wall surfaces of said combustion chamber over a distance corresponding to two or three vertical flues in an unrepaired portion adjacent to a to be repaired portion, and then further extending said heat-insulating materials to cover areas ranging from inward ends of said heat-insulating materials in the longitudinal direction of the oven to ends of two combustion chambers adjacent to said combustion chamber to be repaired;
• diving a brick wall in said portion to be repaired into a plurality of layers stacked one above another;
• dismantling and removing the brick wall in said to be repaired portion;
• manufacturing each of said refractory assemblies outside said oven by combining a plurality of bricks together to form a shape corresponding to each of said stacked layers in a one-to-one relationship;
• carrying said refractory assemblies into said oven one by one;
• and
• building the brick wall in said to be repaired portion with said refractory