Catalytic fractionation top recycle oil tank
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The catalytic fractionation overhead circulation oil collection tank is fully drained; there is no level gauge – how is the liquid level controlled? How to control the circulation volume? Thank you very much!
The circulation volume in the top loop is controlled by the pump frequency converter
Based on the top temperature, as well as the temperatures of the top recirculation tower and the extraction unit, the circulation rate first decreases and then increases, until it reaches a certain level. Taking into account the characteristics of this device, an appropriate circulation rate and operating temperature are determined.
Personally, I don’t think it’s necessary to control the liquid level; it’s sufficient to adjust the circulation rate according to the operations. Although everything is drawn out, overflow will occur if the level exceeds the maximum limit
There is no need to control the liquid level; as long as the top circulation volume is sufficient, any excess is a waste