Heat exchanger cleaning
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Which method is better for cleaning heat exchangers? I’d appreciate some advice from experts
Generally, high-pressure water washing is used, and the results are good as well
We just had the manufacturer clean the heat exchanger, and the results were good
Chemical cleaning will yield better results. If it’s small, rinse it off with water; if it’s oil residue, soak it in diesel and then brush it off with a soft brush. For large-scale projects, it’s best to consult the manufacturer. If you try to handle it on your own, it’s difficult to keep things under control. When cleaning a heat exchanger, you first need to know what material the heat exchanger is made of and what type of scale is present, so that you can decide which cleaning agents to use, how to prepare them, and how to conduct the cleaning process
Removable shell-and-tube heat exchangers are cleaned using high-pressure water, while spiral plate heat exchangers are cleaned chemically. For inorganic scale, low-carbon organic acids are used for cleaning; calcium sulfate is cleaned with dispersants, and organic scale is cleaned through solvent immersion and dispersion
1. Prepare the alkali solution to a 10% concentration, and use a high-pressure cleaner to clean it from top to bottom. 2. Measure the pH value of the water exiting during the cleaning process to prevent dilute acid from corroding the equipment. 3. After cleaning, use an axial flow fan to blow air upward through the manhole to dry out the water inside the tube bundle. 4. The shell-side air pressure is set at 0.08 MPa. 5. Restore the original process piping and equipment, as well as the insulation of the pipelines.
Stainless steel, about 10% *ao acid
It is better to have it cleaned by a professional manufacturer, as this provides a higher level of safety
It is usually done with high-pressure water cleaning; there are professional cleaning companies, so you should consult one nearby. Shanghai Lanyu Cleaning Co., Ltd.
Question: 4. What is the reason for \"applying 0.08 MPa of air pressure to the shell side\"? Could you please give some advice? Also, what are the advantages of using alkaline solution for cleaning compared to high-pressure water? Thank you