I’m seeking help from experts regarding the operation of the stabilization system in hydrogenation units
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In hydrogenation units, nowadays low-boiling-point oil generally goes into the hydrogen sulfide removal stripping tower first and then into the distillation tower. In our facility, we use the traditional hydrogenation process: the low-boiling-point oil enters the distillation tower first, and the crude gasoline from the top of the tower goes into the stabilizer. Recently, perhaps due to the lower processing volume, the reflux pump at the top of the stabilizer keeps failing to deliver sufficient flow. I would like to ask the experts what could be the cause of this issue? ? I’m a beginner in hydrogenation; please give me some guidance.
If the flow rate still doesn’t increase after priming the pump, it may be due to a high temperature of the gasoline at the inlet; the lighter components vaporize inside the pump, causing cavitation.
There are many reasons for the lack of flow rate; investigate them one by one: check whether the inlet filter is clogged and clean it promptly, consider whether the components have become lighter, check if the medium temperature is too high, and examine whether there are issues with the pump impeller! Cavitation is occurring; gas cushioning phenomenon!
There is too much light component; this can be observed when the pressure of the stabilization system is reduced. It is also one of the common causes of pumping losses – issues such as poor flow at the inlet or problems with the pump, etc. Think about it