What are the reasons why copper sheets fail the inspection after alkali exchange in atmospheric and vacuum gasoline refining?
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I would appreciate it if experts could provide a specific and comprehensive answer
Thank you, expert. I hope you can provide a detailed reply
The main reasons for unsatisfactory corrosion resistance of copper sheets in gasoline are the presence of various reactive sulfides in the fuel, or an alkaline content in the gasoline after washing, which can also lead to unsatisfactory results; the specific cause shall be determined based on actual conditions
Has the alkali concentration changed? This has happened before as well
Adding alkali is mainly to remove inorganic acids, as organic acids are difficult to neutralize