Heat exchanger fouling removal
Thread Content
The tube sheet heat exchanger (for shell-side cooling water) is covered with scale, especially at the return water end (i.e., the material inlet side), where the scale accumulation is severe – over a distance equivalent to the length of one baffle – and this has led to blockages; the spaces between the tubes are completely blocked by the scale. After chemical cleaning was used to remove the scale, other areas were cleaned thoroughly, but that area still hasn’t been fully cleaned. I’m not sure what method can be used to remove the scale there completely
A high-pressure water gun is used to spray the chemical cleaning solution for cleaning, and then clean it with cleaning water.
The company only has high-pressure water guns for car washing; I’m not sure if the pressure is sufficient. Also, is this high-pressure water gun for car washing corrosion-resistant to (*ao acid)?
If you’re worried about corrosion, try it with plain water first. If that doesn’t work, hire a professional company to handle it.
Professional companies use high-pressure water cleaning vehicles with pressures of 200 MPa or even higher, and they employ clean water.
Cleaning heat exchangers is usually done with clean water, or a high-pressure water gun!
What is the cleaning effect of using a high-pressure water gun for the shell side?
Friend added; communicate within the platform – the first in China to address this issue!
The water quality is unsatisfactory, and the process selection is inappropriate (circulating water should preferably flow through the tube side). High-pressure water cleaning is required; for the situation described by the poster, a pressure of at least 70 MPA is needed, and it also takes time – people have to take turns working, even working day and night! What size of bundle? ? ?
To address the issue of scaling effectively, it is necessary to improve water quality at its source, complemented by scale inhibition mechanisms; contact me on WeChat at dengjun122927