What to do if the temperature of residue oil is high after cooling?
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The vacuum residue from the existing atmospheric and vacuum distillation units is sent to the tank farm after passing through a cooler. Due to a design flaw, the cooler uses circulating water directly; when the amount of residue oil is high, the cooling effect is insufficient and exceeds the specified limits. Dear experts, how can this be solved?
It doesn’t matter if it’s a little higher; a slightly higher temperature inside the tank can reduce heating needs and save energy! If it’s too high, redesign and recalculation will be necessary! Another approach is to open the bypass lines of the first few heat exchangers before the crude oil, in order to slightly reduce the inlet temperature of the crude oil at the last heat exchanger for crude oil–slag oil. It’s best to open the bypass line that is located right next to the last heat exchanger for crude oil–slag oil!
As long as there is no water in the tank, a slightly higher level is fine
If there is hot feed of residue to coking or catalytic units, the hot feed line can be activated
Or use a separate empty container without water