Rebuilt coke oven heating chamber and method of making the same

C - Chemistry – Metallurgy – 10 – B

Patent

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25/102, 202/34

C10B 29/06 (2006.01)

Patent

CA 1175771

TITLE REBUILT COKE OVEN HEATING CHAMBER AND METHOD OF MAKING THE SAME ABSTRACT OF THE DISCLOSURE A spalled and deteriorated portion of a refrac- tory brick heating wall of a coke oven heating chamber is dismantled. The deteriorated brick is removed with the undamaged brick remaining in place. Individual thermally destructable forms forming the gas flow passageways are vertically erected surrounding ports in the floor through which preheated gas and preheated air are separately supplied into the heating chamber. A second set of destructable forms having passageways forming the heating flues for receiving the products of combustion are posi- tioned between the forms for the gas flow passage- ways. Horizontal forms, also forming gas flow passage- ways, connect adjacent vertical forms for the flow of air and gas from the ports into the heating flues where combustion of the air and gas takes place. When the thermally destructable forms are in place, a refractory material is sprayed onto the outer surfaces of the forms. The refractory material is built up on the forms to replace the removed bricks to reconstruct the portion of the heating chamber removed. The rebuilt portion is united by the refractory spraying with the brickwork of the original heating chamber that remains to form the rebuilt portion of the heating chamber integral with the original brick portion of the heating chamber. The heat generated by the products of combustion of the air and gas disintegrate the destructable forms leaving the formed and solidified refractory replacement portion of the coke oven heating chamber. -2-

392399

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