I’m seeking advice from experts: which type of heat exchanger is better for materials that tend to form scale?
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The material composition is a gypsum slurry with a mass concentration of 10% (containing some lime), at a temperature of 60°C; it needs to be cooled to 40°C using a heat exchanger, with tap water as the cooling medium. Gypsum slurry is a substance prone to scaling; which type of heat exchanger is better?
It’s not clear whether the inner coil is applicable or not
It is recommended to switch to a heat exchanger that is easy to clean.
Structurally, plate exchangers are easier to clean, while cleaning shell and tube exchangers is very troublesome. If the heat exchanger is made of metal, it is possible to contact manufacturers that offer ultrasonic online descaling services to determine whether such an online descaling method can be used. (I have graphite heat exchangers with severe scaling; I wanted to try ultrasonic online descaling. After consulting specialists, I was told that the ultrasonic conductivity of graphite is very low, and even concentrated acids don’t work either – it’s a real headache.)
Spirally wound, allowing the structure to easily move inside the tube