The reflux ratio issue in the xylene column
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I am currently working on a project to carry out advanced separation of C7+ components through catalytic reforming, with the goal of obtaining xylene mixtures that meet national standards. What is generally considered an appropriate reflux ratio for xylene distillation columns? Heat reflux is used at the column top; however, the separation efficiency obtained with a reflux ratio of 5 is still not satisfactory. I would appreciate any advice you might have!
The reflux ratio at the top of the xylene separation tower here is approximately 4.5, with 100 trays in total. If the reflux ratio of yours is 5 and the separation efficiency is poor, it may be that the tower equipment does not meet the requirements; an increase in the number of trays is necessary.