What are the measures to prevent and reduce low-temperature dew point corrosion in heating furnaces?
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What are the measures to prevent and reduce low-temperature dew point corrosion in heating furnaces?
⑴Raise the air temperature at the inlet of the air preheater, or control the wall temperature of the heat exchange surfaces during design. ⑵ Use corrosion-resistant materials. ⑶ Employ low-oxygen combustion and control the excess air amount in combustion to reduce the generation of sulfur trioxide. ⑷ Use low-sulfur fuels to lower the flue gas dew point temperature and minimize low-temperature corrosion.