How are circulating water heat exchangers cleaned?
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Heat exchangers tend to develop scale over time, as well as sludge. Fellow sailors, how do you clean them when this happens?
Now, cleaning is done by professional companies during major repairs. This situation involves cleaning using high-pressure water and descaling agents together.
Backwashing can be carried out during startup; close the circulating water inlet valve, and use the vent valve located at the startup inlet valve
Clean with a high-pressure water gun, and apply anti-corrosion treatment after cleaning.
Cleaning companies, chemical and physical cleaning
For general chemical cleaning, use weak acids such as oxalic acid or citric acid, and repeat the process over several days!
For silt, it can be cleaned using naphthalene, and there are also specialized cleaning companies for this purpose.
Add a cleaning agent, then circulate in reverse
Circulate descaling agent for cleaning, disassemble for cleaning, or use online backwashing. See what kind of heat exchanger it is.
You mean chemical cleaning, right? Excuse me, what kind of reagent is being used?