What are the differences, advantages, and disadvantages between the closed small cycle and the open large cycle in atmospheric and vacuum distillation units?
Thread Content
As the title suggests, I have been thinking about this issue recently. Due to my limited knowledge, apart from realizing that an open-loop cycle takes longer and consumes more energy compared to a closed-loop cycle, I really can’t figure out what the actual differences between the two are. I hope fellow enthusiasts can help discuss this matter; thank you all in advance!
Both open-loop and closed-loop cycles are applicable at the time of startup. During startup, the closed-loop cycle is used for heating and dehydration; it provides good dehydration results in a short amount of time. However, it is complicated when crude oil needs to be introduced. We use the open-loop cycle, which directs the fluid directly to the crude oil tank. The temperature in the electrodesalination unit is raised above 80 degrees before electricity is applied, and when the temperature exceeds 100 degrees, demulsifiers and water are added, which also helps to remove all the water from the oil, ensuring that the pumps downstream are not emptied