How to clean scale from fixed-tube-sheet heat exchangers
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Dear experts, for fixed-tube-sheet heat exchangers with a heat exchange area of 50㎡ or less and made of 20# steel, how should they be cleaned offline?
Cleaning mainly depends on what the scale consists of, with targeted cleaning methods used accordingly. Whatever it is, it needs to be cleaned regularly and promptly; don’t wait until the pipes are completely clogged before cleaning them, as it will then be difficult to clean them. Additionally, the fixed tube sheet is a straight tube, which is relatively less prone to clogging, and cleaning it is also the easiest.
Can’t it be cleaned online? Offline, only the flange can be removed; it was cleaned with tools!
On the water side of the fixed cover plate, pipes are generally used; for cleaning inside these pipes, the core assembly is usually removed first and then rinsed with a high-pressure water gun