How to prevent scaling on the circulating water side of plate heat exchangers
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I would like to ask everyone: how can we prevent scaling on the circulating water side of heat exchangers? While the quality of the circulating water is one factor, what controls can be implemented in terms of the process to avoid scaling?
With proper control of pressure and temperature, a scale-preventing slow-release agent can also be added. @ylb913 @Taihu Fishman
The main thing to control in terms of the manufacturing process is the temperature rise; additionally, it is required to perform a cleaning cycle for each unit on a monthly basis, but we have never done that.
Ensure that the outlet temperature remains below 45°C and maintain the flow rate on the circulating water side.
The addition of scale inhibitors is used to control the hardness of circulating water
Regarding the hardness of circulating water, is it supposed to be higher in the north? I have also worked in factories in the south, and I haven’t heard of any issues with scaling on the water side of plate heat exchangers~
Yes, we now check the circulating water flow every week to detect issues as early as possible and address them promptly
I heard that Nalco does a good job with water treatment~
I haven’t heard of it; you can check the official website to find out more.
In addition to maintaining good water quality, it is important to ensure an appropriate flow rate for the circulating water!
Avoid excessively high temperatures of the circulating water; minimize adjustments to the circulating water valves and keep them at their maximum opening. Another thing is to regularly drain and refill water to prevent ion supersaturation