Comparison of water cooling and air cooling for the lean amine liquid in the amine liquid regeneration unit
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Cooling of the lean amine stream in amine solution regeneration units is usually achieved through water cooling; however, due to frequent leaks in the heat exchangers, many facilities have now switched to air cooling. Which cooling method is better?
Using air cooling, it can only be cooled down to around 50 degrees at most; there might be water cooling in series later on. Which sea friend can talk about the advantages and disadvantages of the two? Thank you!
Agree with what was said above; air cooling generally results in a relatively high temperature after cooling, and water cooling is still necessary in the end. As for the water-cooled heat exchangers leaking easily, it’s probably due to the material you chose; our units’ water-cooled systems have never leaked, while the reboilers are prone to leakage. Previously, water cooling used aluminum-impregnated tube bundles combined with anodic protection; now, Q235—A is used.
We use seawater for cooling, and leaks have a significant impact on the system; therefore, we plan to switch to air cooling.
It’s probably a problem caused by seawater corrosion.
Our process involves air cooling first, followed by water cooling. If there is a leak during water cooling, it can be determined by testing the concentration of the amine solution
Reply to 3# lyybjgz: It’s the same here as well. The water cooler didn’t leak, but the heat exchanger made of oil slurry (reboiler) did leak, and as a result there was way too much oil slurry in the amine solution system… 555. Our water coolers get clogged frequently……
We only have water cooling; there is no air cooling
We use only water cooling, and the material is 304L stainless steel, with no problems at all.
The aliphatic amine solution that everyone uses, right? Is it MDEA? Are there any solvent mixtures using MDEA that are useful?
There is now wet air cooling, which works well, takes up less space, and allows for flexible adjustment. Our company uses that one; it seems to be manufactured by some company in Luoyang. You can ask for advice