Importance

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Abstract

The invention concerns a process for removing dust from coke cooled by a dry method after the coke has left the cooling zone of a cooling chamber, and a device for carrying out the process. A dust-free flushing gas is injected below the cooling zone, preferably parallel to the direction in which the coke moves when it has been cooled to below 200.degree. C., to draw the gas off above the discharge lock together with the stirred-up coke dust, and to recirculate the gas after the dust is removed from it. As an alternative, compressed air is blown through the coke after it has left the lock and while it is being transported through a vibrating machine. The coke is cooled in a dry cooling unit to below 200.degree. C. and preferably 130.degree. to 180.degree. C. The coke is then cooled outside the dry cooling unit by means of air at about 50.degree. to 90.degree. C. and preferably 70.degree. to 80.degree. C. Either simultaneously with or immediately after the cooling step with air, the coke is moistened, for example by sprinkling or spraying, to a residual moisture of 2% to 4% by weight and preferably 2% to 3% by weight.

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First Claim