Scaling in the tower top condenser and its treatment
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It is a vacuum distillation tower with a top condenser area of 80 m2. The raw water was used without any corrosion or scale inhibition treatment; water flows through the tube side (made of stainless steel) at a temperature of 40–50°C, while the material flows through the shell side at a temperature of 70–80°C. After half a year of use, the temperature at the top of the tower failed to decrease, and upon inspection it was found that severe scaling had occurred. Cleaning is carried out; once clean, the system is put back into use. Corrosion and scale inhibition agents are added to the water. The current problem is that both the inside and outside of the pipes are in a high-temperature environment, which raises concerns about scale formation again (as it’s very difficult to remove scale once it forms). Moreover, according to recent water quality tests, the total hardness is around 1000. Apart from using ion exchange resins to produce soft water, are there any other effective ways to prevent scale formation? Feel free to discuss and offer suggestions
Why not treat the water first before it enters the condenser?
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The poster’s question reflects a common concern among many factories; this temperature falls within the range suitable for scale formation, so it is inevitable.
Thank you. For now, the only thing we can do is add more chemicals and use ion-exchanged water to maintain things running as long as possible, while cleaning regularly.
I was dealing with it some time ago as well, but I didn’t pay enough attention to it and didn’t handle it properly.
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No chemicals are required, which prevents corrosion of the equipment and ensures its continuous operation without scaling. You can contact me.
Besides using ion exchange resins to produce soft water, are there any good methods to prevent scaling? == Use distilled water
Besides using ion exchange resins to produce soft water, are there any good methods to prevent scaling? == Or use specially treated anti-scaling heat exchange tubes