How to remove scale from heat exchanger?
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The heat exchanger has been used for two years and the heat exchange effect has been reduced. How can I remove scale?
When looking for a chemical cleaning company, they usually charge per square meter.
First of all, do you use water-water heat exchange or steam-water heat exchange? Are the materials used a large telescopic type? For example, the heat exchange tube is a copper tube. You can use steam and cold water to descale, otherwise use weak acid for descaling.
At present, the most commonly used method is high-pressure water cleaning, which is charged according to the heat exchange area.
Weak acid can be used for local circulation cleaning.
This is indeed the case. At present, my company cuts off the heat exchanger, takes out the core, and cleans it with high-pressure water!
First of all, it depends on what kind of heat exchanger you have. If it is a spray type, you can use a high-pressure water gun. Never seen others
Disassemble and wash with less acid. If possible, use a pump to circulate the rinse.
High-pressure water cleaning or chemical cleaning can be used
Far East high pressure cleaning is very effective, I recommend giving it a try
Physical cleaning: high pressure water chemical cleaning: pickling
There are currently three main methods for cleaning heat exchanger cores:: 1. Mechanical cleaning, using manual core passing is more time-consuming and less efficient. 2. Chemical cleaning uses chemical agents to circulate rust, and pay attention to controlling the pH to avoid corrosion of the equipment body. ； 3. Ultrasonic descaling