Repair cost for anode protection acid coolers
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Our company’s sulfuric acid production plant has been shut down for almost two years; we plan to restart it now, but the tubes in all three air-cooled exchangers are damaged. When we consulted the manufacturer regarding repair costs, they quoted a price that was 1.5 times higher than the online price of 316L material on that day. Please tell us if this isn’t an excessively high charge from the manufacturer. This post was last edited by in the blink of an eye on 2007-12-15 at 18:21.]
You can look at several repair manufacturers to compare prices. We don’t know much about the machining industry.
What you want is repair, not the sale of materials. After repairs, there is still a warranty period. Overall, the cost of repairs is higher than the cost of manufacturing. Repairs require cleaning and disassembly, and since the number of pipes isn’t large, it becomes more difficult to work with them. So it’s only fair that they charge more for such repairs.
It’s best to find a manufacturer specialized in producing acid coolers; given the current high acid value, it’s not worth causing frequent shutdowns of the equipment. You can contact 0931-7311232. Anyone can provide you with repair options and an accurate quote.
Based on the situation described on the 1st floor, during the shutdown period the anode protection acid cooler was not sealed, and almost all of its tubes need to be replaced! Since the tubes account for over 50% of the cooler’s total weight, in my opinion it would be more cost-effective to manufacture a new one. For anode protection acid coolers, the following methods can be used for sealing them during long periods of shutdown: 1. Clean the water side, and after water is passed through, close the inlet and outlet valves on the water side. 2. Acid side injection for acid sealing; blind flanges installed at the acid side inlet and outlet; potentiostat used to maintain passivation. 3. Regularly check the pH value on the water side, and address any abnormalities promptly. This post was last edited by in the blink of an eye on 2007-12-15 18:30]
It’s truly a pity, and there are many such cases. In fact, every manufacturer of acid chillers for anodic protection provides an operation manual that contains detailed instructions. If anyone needs one, they can send an email to angelz10@126.com and provide their mailing address; I will then send it to them by registered mail.
If not used for an extended period, it is best to drain the acid, clean it thoroughly, and then store it securely. In a situation like the one you described, it seems the only option is to replace it with new equipment.
“Does the weight of the tubes account for over 50% of the acid cooler’s weight?” It doesn’t seem to be what I calculated!
However, it’s best to give enough bonuses to your own people; you can’t let outsiders make money easily while treating your own people so poorly. Doing the work well is the greatest benefit