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对于没有尾部受热面的工业锅炉,增设省煤器及空气预热器,回收排烟余热是提高锅炉热效率的重要节能途径。市节煤办所推广的KZL4-13锅炉改造项目之一,便是增加热风器(即空气预热器)借以提高锅膛温度,使燃料充分地燃烧,增加辐射换热强度,达到节能效果。 KZL4-13锅炉为国家定型产品。此锅炉一般带有铸铁省煤器,对排烟余热已进行了部分回收。因此,再增加空气预热器,即将会出现如何联装才更趋向于科学,合理的问题。处理不好,则会画蛇添足,造成事倍功半的后果。
For industrial boilers without tail heating surface, economizer and air preheater are added, and waste heat recovery from exhaust gas is an important energy-saving way to improve boiler thermal efficiency. City Coal Office to promote one of the KZL4-13 boiler transformation project is to increase the air heater (air preheater) to raise the temperature in the boiler to make the fuel fully burn, increase the intensity of radiation heat exchange to achieve energy-saving effect. KZL4-13 boiler for the state stereotypes products. This boiler is generally equipped with cast iron economizer, the exhaust heat has been partially recovered. Therefore, adding more air preheaters will soon appear to be more scientific and reasonable. Disposal is not good, you will be superfluous, resulting in more than half the consequences.