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The heat exchange tubes of the condenser are made of stainless steel; if scaling occurs, how should it be cleaned?

2021-01-28View Original

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The heat exchange tubes of our power plant’s condensers are made of TP304 stainless steel, and hard deposits have formed on the inner walls of these tubes (note: these are the same kind of white deposits that form at the bottom of a kettle when water is boiled). We plan to clean them taking advantage of the downtime that will occur after the start of spring. Question: What kind of cleaning process should be used? (For example: What cleaning agent should be used?) The concentration of the cleaning agent? Cleaning time? Cleaning solution concentration? Wait, etc.). Also, is pre-coating still necessary after cleaning? How to pre-coat?
Reply #22021-01-28
For such phenomena, it is necessary to take samples to analyze the chemical composition of the scale; based on the physical and chemical properties, acid treatment may be required. Fortunately, it is made of stainless steel. For reference.
Reply #32021-01-29
Has the glue ball cleaning not been started? It should be possible to clean it with a hard rubber ball.
Reply #42021-03-17
You need to determine the composition of the scale sample first. If it is calcium carbonate, use hydrochloric acid. If it’s calcium sulfate, use a calcium sulfate cleaning agent; I have cleaned many cases of calcium sulfate scaling, and the reaction is rapid and intense. The pH level remains neutral, and there is no corrosion. In short, you need to first determine the composition of the scale in order to develop a targeted cleaning plan.
Reply #52021-03-19
It is better to use professional cleaning services; mechanical cleaning is preferred, and chemical cleaning should be used with caution
Reply #62021-04-12
Hello, I represent Foshan Henghexin Pipe Co., Ltd. Our company specializes in the production of various industrial stainless steel welded pipes and accessories. . If your company needs pipes and fittings for fluid transportation projects, you can call or send a WeChat message to inquire about prices and quality. Manager Chen’s contact number is 18912850123. It is recommended to have professionals carry out the cleaning process to avoid damaging the protective chromium coating on the stainless steel pipes
Reply #72021-04-16
Dear masters: I am the poster. We ultimately used sulfamic acid for cleaning. After weighing the test pieces, no corrosion was detected. The cleaning effect is also very good.

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