Patent ID: 8311777

Claim:
A coke oven wall surface evaluation apparatus evaluating a state of a side wall surface of a coking chamber of a coke oven operating while pushing produced coke with a pusher, the coke oven wall surface evaluation apparatus comprising: an imaging unit photographing the side wall surface of the coking chamber of the coke oven; a concave and convex information deriving unit deriving concave and convex information relating to concaves and convexes generated on the side wall surface of the coking chamber, said information being three-dimensional profile data representing concave and convex amount for each one of a plurality of regions of the side wall surface of the coking chamber, based on image signals of the side wall surface of the coking chamber photographed by the imaging unit; a gradient information deriving unit deriving a step of the concave and convex amount for each one of said plurality of regions adjacent to each other in a pushing direction of the coke, said step representing gradient information relating to the gradient relative to a pushing direction of the coke on the side wall surface of the coking chamber, based on the concave and convex information derived by said concave and convex information deriving unit; and an indexing unit deriving a resistance index in which a resistance received by the coke at a pushing time is indexed by using the gradient information derived by said gradient information deriving unit.