Heat exchanger for cooling the phase transition of propylene
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Can the evaporative air cooling used for the phase-change cooling of the propylene phase at the top outlet of the propylene distillation tower be replaced by a heat exchanger? Friends with experience as well as manufacturers are welcome to come and discuss this; cooperation is possible for project modifications
Does the poster mean to replace the existing evaporative air cooler with a conventional shell-and-tube heat exchanger? Most of the fixed condensers for acrylonitrile distillation towers that I have come across are shell-and-tube heat exchangers; finned types have also been used. Does the existing evaporative air cooling system fail to meet the process requirements due to changes in ambient temperature and parameters of the material taken from the top of the tower, or because of scaling caused by water quality issues after operation for a certain period of time? Is that why technical upgrades are being considered? Not much information is provided; it would be best to discuss the specific details. I’ve sent you an in-app message; please get in touch when you have time to talk.
Using air cooling is to save circulating water, right?
Currently, evaporation-type air cooling is being used, with 15 tons of desalinated water needing to be evaporated per hour. We want to switch to a closed-loop system using heat exchangers, and we need to find a suitable cold source!
Yes, to save water, we are currently using evaporative air cooling; we want to switch to a system that saves both water and electricity
The internal message I’m sending you: based on the closed-circuit chilled water design approach, certainly, with the same heat load, increasing the temperature difference on the chilled water side will result in a relatively lower circulation volume of water. This requires designing a solution by taking into account the site-specific process parameters you provide.
Liu Jincheng, are you involved in heat exchanger technology?