How to deal with the acidity of heptane
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Hello everyone, my company uses heptane for heat removal in its VCM conversion process. Due to leaks in the converter, the heptane system is now acidic, with a pH level between 5 and 6. This causes a certain degree of corrosion of the equipment and pipelines, leading to leaks. We added alkali solution earlier, but since alkali solutions have a high density, it had almost no effect. Do any of you experts have any good tips for adjusting the pH of the heptane system? Thank you!
“For VCM conversion, heptane is used for heat removal – ”-------In all the cases I’ve encountered, pure water has been used for heat exchange; isn’t it inappropriate to use heptane here? Heptane is a colorless, volatile liquid, and its price is definitely higher than that of water.
The VCM workshops designed by Chengda Design Institute mostly use heptane for heat exchange, which causes less corrosion to the converters and offers excellent heat exchange efficiency. However, the downside is that the replacement liquid is volatile, flammable and explosive, and its handling is more complicated than that of hot water.