(Emergency help) Anti-corrosion problem of circulating water cooling tower bracket
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There are three sets of cooling water towers in the closed-circuit circulation water treatment system of gas-making sewage in my unit (three units are tightly connected in parallel). It was found that the steel brackets of the cooling water towers were seriously rusted after less than a year of use. If anti-corrosion treatment is not carried out in time, once the main brackets are corroded, there is a worry that the entire tower will collapse. Since the sewage circulation system only has It can only be stopped when the whole system is stopped, otherwise the consequences of sewage flowing into the river will be very serious. Now I have opened one and stopped two for anti-corrosion treatment. However, the water temperature is still a bit high, resulting in large amounts of water vapor, which greatly affects the anti-corrosion quality. I don’t know what kind of anti-corrosion coating should be used in a humid environment, and how to apply it in this case! Thank you, waiting online!
We mostly use concrete. As for the steel frame, it is recommended to find an exact time for anti-corrosion. Fiberglass should be fine.
Suggestions: 1. Change to reinforced concrete. 2. Use fiberglass for anti-corrosion on the existing pillars, but pay attention to waterproofing during construction.
In fact, if this kind of bracket is anti-corrosion according to strict requirements before installation, the cost will be the lowest. If it is corroded and then repaired, no matter how much money is spent, the effect will not be very good. At most, the service life will be extended by 5-8 years (depending on the specific corrosion environment and the quality of anti-corrosion construction). Depending on your current situation, applying paint to prevent corrosion is the simplest and most trouble-free way to do it. Specific process: 1. Degrease, remove rust and polish the surface to St level 3 ； 2 Apply 2 coats of epoxy water-resistant and anti-rust primer with a thickness of 80 microns ； 3 Apply 2 coats of epoxy water-proof iron intermediate paint with a thickness of 100 microns ； 4 Apply 2 coats of moisture-curing polyurethane topcoat to a thickness of 70 microns. If done well, there is no problem in extending the life span by more than 5 years.
If you have any questions about where I can buy it, please give me a call. Thank you!
The problem is still unresolved. Can any teachers recommend what kind of paint should be used for construction in such a humid environment? Thanks!
The epoxy resin paint used on the tower frames of our gas production and desulfurization circulating water cooling towers is good to use all the time!
Epoxy resin paint construction is troublesome
7# ddfmy It is impossible to apply online in an environment like yours. Anti-corrosion coatings must almost always be applied under dry conditions. You might as well cut out a separate one to do thorough anti-corrosion. You must pay attention to the construction quality, otherwise the money will be wasted. If you have enough money, you can use heavy-duty anti-corrosion coatings, such as epoxy polyurethane. Generally, one anti-corrosion treatment can last about 5 years. It is recommended that the construction site be completely rust-removed and take pictures for storage, and thoroughly check the quality of rust removal (ST3 level rust removal) before applying paint.