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众所周知、工业炉窑的排烟热损失是其各项热损失中最大的一项,根据炉窑种类不同,排烟热损失占全部能耗的30～70%。因此,回收烟气余热是工业炉节约燃料重要措施之一。通过换热器回收烟气余热预热燃烧所需空气可以节约能源10～30%。1985年机械部对7798台各种工业炉进行了调查,其中安装有换热器的仅有417台,占5.3%.而且余热利用率低,空气预热温度不高,一般在200℃以下。因此研制高效换热器是工业炉窑
As we all know, the heat loss of industrial kiln exhaust heat loss is the largest of its one, according to the different types of furnaces, exhaust heat losses accounted for 30% to 70% of total energy consumption. Therefore, the recovery of waste heat from flue gas is one of the important measures to save fuel in industrial furnaces. Recovery of flue gas waste heat through the heat exchanger Preheat the air required for combustion can save 10 to 30% of energy. In 1985, 7798 sets of industrial furnaces were investigated by the Ministry of Machinery, of which only 417 were equipped with heat exchangers, accounting for 5.3% .With low utilization of residual heat and low air preheating temperature, it is generally below 200 ℃. Therefore, the development of efficient heat exchangers are industrial furnaces