Waste Heat Boiler Tube Failure In Sulfuric Acid Plant

Waste Heat Boiler Tube Failure In Sulfuric Acid Plant

Waste Heat Boiler Tube Failure In Sulfuric Acid Plant Related Information

Sulfuric acid dew point corrosion in waste heat boiler ...

Oct 01 2013 · It can be concluded from the metallurgical investigations that the cause of the boiler tubes failure is the sulfuric acid dew point corrosion due to air leakage and cyclic temperature profile. Development of corrosion resistant materials is desirable to prevent sulfuric acid dew point corrosion in waste heat boiler tubes.

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AMPP Store - 98720 UNUSUAL REFINERY BOILER TUBE FAILURES ...

Overview. Corrosion by sulfuric acid in boilers is a low probability event because gas temperature and metal temperature of boiler tubes are high enough to avoid the condensation of sulfuric acid from flue gases. This degradation mechanism is frequently considered as an important cause of air preheaters materials degradation where flue gases are cooled by heat transfer to the combustion air.

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Unusual refinery boiler tube failures due to corrosion by ...

@article{osti_352627 title = {Unusual refinery boiler tube failures due to corrosion by sulfuric acid induced by steam leaks} author = {Lopez-Lopez D and Wong-Moreno A} abstractNote = {Corrosion by sulfuric acid in boilers is a low probability event because gas temperature and metal temperature of boiler tubes are high enough to avoid the condensation of sulfuric acid from flue gases. This degradation

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Boiler tube failures: Case histories of steam blanketing ...

Abstract. Case histories in which boiler tube failures resulted from a combination of steam blanketing and underdeposit corrosion are reviewed. Steam blanketing originates from inadequate circulation and commonly occurs in horizontal or sloped boiler tube circuits in the roof of a boiler.

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(PDF) Unusual Refinery Boiler Tube Failures Due to ...

In this case feedwater temperature to generator tubes is practically the saturation temperature (-275 "C) and low temperature corrosion problems can not normally ba expected.In the present work failure of generator tubes of two small oil-fired subcritical boilers where sulfuric acid corrosion was the root cause is

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Unusual Refinery Boiler Tube Failures Due to Corrosion by ...

In this paper the failure analysis of generator tubes (similar to the economizer of bigger boilers) of two small oil-fired subcritical boilers is reported. It is concluded that sulfuric acid corrosion was the cause of the failure. The sulfuric acid condensation was due to the contact of flue gases containing SO3 with water-steam spray coming from leaks at the interface of rolled tube to the drum.

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