Help request: Cleaning of heat exchange tubes
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In general heat exchangers used for evaporating salts, the main component of the feed liquid is magnesium sulfate solution; the water quality is poor with a high level of impurities, which can lead to scaling and blockage of the heat exchange tubes. What chemicals are effective for cleaning in such cases? Could you give some guidance if you know?
Find a professional cleaning company, such as Lanxing, and LAN826 is generally recommended
Hello: Is a centrifuge used for the separation with magnesium sulfate?
There is a device called an ultrasonic scale inhibitor, which requires very little modification to existing equipment and is particularly suitable for conditions like yours. It primarily utilizes the low-frequency vibrations generated by an ultrasonic system to prevent or reduce the accumulation of scale and impurities on the heat exchange tube sheets and tube bundles, thereby ensuring efficient heat exchange and reducing the frequency of cleaning.
Evaporation process + crystallization + centrifuge discharge
Is this useful in actual factory production? Is it not suitable because the heat exchanger is particularly large? I’ve seen that this type is used for the heat exchangers of small air compressors on the internet
It seems that this has little to do with the size of the heat exchanger; if necessary, a multi-point distribution can be adopted to improve the scale prevention effect! You can search on Baidu for more details; at least in our unit, the actual results were much better than we had expected. Moreover, we use a heavy oil system, and there are solid particles present in it.
Do you use fixed-tube-sheet heat exchangers? In our fluid, there are high levels of magnesium sulfate and calcium sulfate, which can lead to scaling. What is the heat exchange area of one of your heat exchangers approximately? One of our heat exchange areas is approximately 600㎡
We use shell-and-tube heat exchangers here; it seems we don’t have such a large heat exchange area as yours! You can consult the relevant manufacturers for specific details.
10 years ago, right after graduating, we were cleaning the tubes of reboilers in a factory; we would insert a long steel rod into them, and then use a high-pressure water gun – and if that didn’t work, we would use the steel rod to force it open