Application of high-efficiency air preheaters
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The waste heat from the flue gas is recovered to heat the air used for combustion, thereby reducing the flue gas temperature and improving the efficiency of the furnace. To prevent corrosion caused by the low dew point of the flue gas, corrosion-resistant materials are used on the low-temperature side of the air preheater. Pros and cons?
The last edit to this post was made by zhaoxujun on 2011-9-23 at 18:38. To prevent dew point corrosion, when using a heat pipe air preheater, ensure that the temperature of the heat pipe walls does not drop below the dew point； In the low-temperature section, partially lined enamel tubes and cast iron heat exchange elements can be used, along with hot water flushing facilities to prevent the accumulation of sticky ash, which could reduce the heat exchange efficiency and block the flue gas passages.