How to remove the heat exchange tubes?
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This post was last edited by Akiji on 2021-4-25 at 16:28. Ammonia compressor tube bundle: heat exchange tubes made of TA2, baffles made of carbon steel; due to leakage between ammonia and the cooling medium, the carbon steel parts have suffered severe corrosion, and it is intended to remove the heat exchange tubes for reuse. I’ve tried knocking and using a high-pressure gun, but nothing worked. Is there any good solution? ,
Administrator, this is the first time I’m uploading images. Could you please advise me on how to remove the extra images? Thank you!
Click “Edit”----“Attachments”----and delete the selected photo.
See what can be used to dissolve the reaction products, or you can simply prepare a solution to corrode the carbon steel directly
5th floor, hello! The key issue now is not knowing which type of solution to use – acidic or alkaline – as well as the solvent formula and proportions; I couldn’t find any relevant information online yesterday.
Or, where can I buy this kind of solvent? It would be great if you could provide some information. Thank you all!
Let’s first analyze what the main components of scaling are Then, prepare the appropriate solution for soaking treatment
The baffle plates, spacers, and tie rods are all made of Q235B, while the heat exchange tubes are made of TA2. Due to ammonia corrosion, the upper heat exchange tubes show a metallic luster after surface pickling in those areas covered with black residue; the lower heat exchange tubes have a scale layer about 1 mm thick, which can be removed in pieces by tapping them. But the baffle and the holes in the heat exchange tubes were completely blocked; knocking on them or using a high-pressure gun had no effect at all. That’s exactly the situation.
It corrodes, leaks, and is difficult to remove; it’s better to make a new one