3 replies to this topic

[xavlith]

Hi guys,

 

The finned tube heat exchanger of a chemical plant I have just visited suffer from a problem due to dew point corrosion. Can I know other than changing the construction material for the heat exchanger is there a better way to deal with such situation? The medium @ temperature are flue gas @ 360°C and water @ 30°C.

Edited by xavlith, 21 January 2015 - 04:06 AM.

[shan]

Inject corrosion inhibitor into your flue gas at upstream of the exchanger.

[xavlith]

Inject corrosion inhibitor into your flue gas at upstream of the exchanger.

 

so they can use back the old equipment with same material with addon of injecting corrosion inhibitor only?

[P.K.Rao]

Keeping temperature of heat exchanger exit flue gas above dew point can reduce corrosion. You loose some energy but protect the equipment