The heat exchanger of the fuel furnace is severely corroded; what material would be suitable?
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Due to the deteriorating quality of fuel, with a higher sulfur content, the exhaust heat exchangers are suffering from severe corrosion; what material would be better to use? The exhaust gas temperature ranges from 320 to 430 degrees.
Hello! I was wondering if it would be possible to have some technical exchanges with you. We specialize in selecting materials and supplying them for use in corrosion-resistant applications. Our technical advisor is Professor Zhang Weituo, an authority in the field of corrosion and a member of the China Corrosion Society. I would like to ask if it would be possible for Professor Zhang to have technical discussions with you on this subject. If so, please get in touch with us. Huang Shuanglong, Shanghai Branch of Allegheny Ludlum Technologies International Inc. TEL: 021 5081 6278 FAX: 021 5082 5278 Mobile: 13917431324 E-mail: ahuang@alleghenyludlum.com or baoseti@sohu.com Http://www.alleghenyludlum.com
Use stainless steel; it’s too luxurious. So few people do this; generally, anti-corrosion treatment is applied to carbon steel. You might want to try nickel-phosphorus plating as an anti-corrosion material
If the cause is an increase in the S content in the fuel, then the main form of corrosion in the exhaust gases is caused by SO2 being converted to SO3, which then condenses in water to form H2SO4 that causes corrosion. The materials chosen for use with concentrated sulfuric acid and dilute sulfuric acid are completely different; therefore, detailed information is needed to make a proper determination.