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对于锻造加热炉,均热炉等高温加热炉,其出炉烟气温度一般为900～1000℃。由于排烟温度高,金属换热器难以有效回收,所以烟气带走的热量要占热支出的30～40％,再者此类高温炉内炉气对物料传热的形式以辐射为主,按气体辐射的特点,炉气中三原子分子愈多,炉气的辐射力愈大。而通常用空气助燃,炉中大多数为无辐射能力的N_2,故炉气对物料的辐射也不理想。 本文提出一种纯氧与部分出炉高温炉气混合助燃的新型燃烧法,并研究了它在炉内的热
For forging furnace, soaking furnace and other high temperature furnace, the flue gas temperature is generally released 900 ~ 1000 ℃. Due to the high temperature of the exhaust gas, it is difficult to effectively recover the metal heat exchanger, so the heat away from the flue gas accounts for 30% to 40% of the heat expenditure. In addition, the furnace heat of such high temperature furnace heats the material mainly in the form of radiation , According to the characteristics of gas radiation, the more the three atoms in the furnace gas molecules, the greater the radiation of furnace gas. And usually with air combustion, most of the furnace without radiation N_2, so the furnace gas radiation on the material is not ideal. In this paper, a new type of combustion method is proposed, in which pure oxygen is mixed with partial high temperature furnace gas and its heat in the furnace