Method of operating a cupola furnace专利检索- 竖炉或类似立式或基本立式的炉专利检索查询-专利查询网

Method of operating a cupola furnace
申请号	US3630719D	申请日	1969-04-01	公开(公告)号	US3630719A	公开(公告)日	1971-12-28
申请人	CHEMICAL CONSTRUCTION CORP;			发明人	CRAIG ROBERT C;
摘要	The formation of an explosive gas mixture in the operation of a ferrous metallurgical furnace such as a vertical cupola furnace or the like is prevented, by injecting an inert gas stream into the upper part of the furnace below the charge inlet, to prevent air from flowing into the upper part of the furnace through the charge inlet, and thereby preventing the formation of an explosive gas mixture of air with process gas, which is rich in carbon monoxide and is withdrawn from the side of the furnace below the upper charge inlet.
权利要求	2. The method of claim 1, in which said process charge bed extends upwards in said furnace and terminates above said gas outlet opening, whereby said hot inert gas stream flows downwards through the upper portion of said process charge bed and thereby heats said upper process charge bed portion to an elevated temperature, prior to the reaction of said hot process gas stream with said process charge bed. 3. The method of claim 1, in which said air stream passed upwards through said furnace is a hot air stream which is preheated to a temperature in the range of 200* C. to 500* C. 4. The method of claim 1, in which said hot inert gas stream is substantially free of uncombined oxygen.
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