Increase the reflux ratio in the upper column stripping section
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It is an oxygen generator using molecular sieves and full-low-pressure external compression with argon; recently, the management increased the amount of liquid air from the lower column that is sent to the upper column. What impact will this have on the distillation conditions in the upper column and on the argon system?
Please send over your flowchart so we can discuss it.
Increasing the flow to the upper column from the liquid air system means reducing the throttle valve for liquid nitrogen, right? In that case, the oxygen purity should decrease, and the nitrogen content in the argon fraction should increase
It’s necessary to clarify exactly how the increase will be achieved – by reducing the amount of liquid nitrogen, or by lowering the load on the argon system, etc. – so that everyone can analyze it for you~~
Only the liquid nitrogen shut-off valve was closed; nothing else was changed
Increasing the reflux ratio in the stripping section will cause changes, but the impact should be minimal