Issues related to the residue cooler
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Generally, when a heavy oil cooler uses fresh water (with a lower temperature than circulating water), the oil does not cool down effectively. The reason is that heavy oils contain waxy components, and rapid cooling leads to the formation of wax films that increase thermal resistance and impair heat transfer. Therefore, secondary circulating water with reheating is used in the production of such oils. If we want to improve the heat exchange efficiency in the design, can we add steam to the circulating water in order to raise its temperature and melt the wax film? Experts, do you have any good process methods to suggest?
Don’t you have circulating hot water there? Above 60 degrees ； I’ve seen a cooler for catalytic slurry that is of the jacketed type (self-made); the material flows inside the jacket while water flows on the outside, which allows for effective control of the temperature of the slurry at 85 to 90 degrees.
For this renovation project, there is no circulating hot water on site, so it’s difficult to proceed. The idea now is to introduce steam into the circulating water system.