Chemical cleaning issues in shell and tube heat exchangers
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How can rust and impurities be removed through chemical cleaning of the shell side of a tube heat exchanger?
I also consulted heat exchanger manufacturers regarding this issue, and their advice was to use a weak acid for pickling; after filling the shell side, tap the outer wall gently with a hammer, drain it after some time, and then rinse it several times with clean water. At that time, the type of acid used depends on the choice of material.
During the chemical cleaning of heat exchangers, proper cleaning methods can remove rust and debris. It is essential to install filtering devices during the cyclic cleaning process, so that the debris and insoluble substances removed can be cleared away promptly.