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Introduction to the water injection process at the top of the vacuum tower in distillation units

2020-04-26View Original

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Our distillation unit’s vacuum tower top is equipped with plate-type air coolers; vacuum is achieved through two stages of evacuation, using three sets of plate-type air coolers arranged in a 3/2/1 configuration. Finally, a water-ring vacuum pump is used for the vacuum creation process. In winter, when temperatures are low, the vacuum level can remain above 72 mmHg, but it drops significantly in summer. Do any experts have any better solutions? Additionally, there are references on water injection at the top of atmospheric pressure towers; there is less information on water injection at the top of vacuum towers. What are the advantages of water injection at the top of vacuum towers?
Reply #22020-05-14
I don’t know what region the device owned by the poster is in – what is the external temperature like during summer? Do your panels have a painting system?
Reply #32020-06-13
The temperature control of plate-type air cooling is poor; it tends to experience flow imbalances in winter, and fails to provide sufficient cooling in summer. Using a water cooler yields much better results. Does plate-type air cooling have a spraying system?
Reply #42020-10-24
Hello, that’s indeed the current situation: the water cooler project has not been approved yet, and the plate-type air cooler fails to provide sufficient cooling in summer, while there is excessive flow in winter. Our plate-type air coolers are equipped with spraying systems, which are activated in summer. Spray softened water. But it’s hard to control. Water spray volume: for air-cooled variable-frequency systems, it is basically 100%

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