Cleaning the tube bundles is too difficult – is there no solution?
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Cleaning water gun tube bundles is time-consuming and labor-intensive; is there any good way around this?
This post was last edited by Shutong on 2022-3-11 at 20:40. For the cleaning of ordinary heat exchangers, a water pressure of 700 bar is sufficient to achieve good results; however, in some cases, a pressure of 20,000 psi (1,400 bar) or even 40,000 psi (2,800 bar) may be required. Jetstream offers three types of automatic cleaner units for heat exchanger tube bundles, with robotic arms that automatically move nozzles from the beginning to the end of the heat exchanger tubes to remove stubborn residues. Automatic cleaning - dual nozzles
Seal the lower head and try soaking it in chemical solutions to dissolve it. The specific solution must be capable of dissolving the blockage; a test should be conducted before use. For reference.
When cleaning heat exchange tube bundles, it is essential to choose different cleaning methods based on the specific object to be cleaned. One is high-pressure water jet technology, and the other is chemical cleaning technology. In the actual cleaning process, high-pressure water jet technology is more suitable for the straight sections on the inner wall of the tube bundle. Also, take a look at what kind of scale it is; if it’s water scale or rust scale, etc., that would be more suitable. However, coking substances formed from oil can be tested; when cleaning is difficult, chemical cleaning methods can be employed. In short, the method to be used is determined based on the properties of the scale being cleaned. Sometimes high-pressure water cleaning and chemical cleaning are used simultaneously.
Due to production constraints, the equipment needs to be cleaned online; the cleaning pressure is 1200–1800 MPa, which is sufficient for thorough cleaning, but the process takes a long time.
The tube side carries the flue gas resulting from coal combustion, which is used to heat the air in the shell side; the blockage there is quite severe, and chemical cleaning does not ensure that the chemicals can penetrate inside.
That’s generally how it’s handled. First, use manual tools to clear the blocked area, and then consider other methods.
The flue gas generated by coal combustion has blocked the entire tube side.
The design of boilers should be used as a reference; a coiled tube heat exchanger should be employed, with air flowing inside the tubes and flue gas flowing outside them