Questions regarding distillation column pilot tests
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How is the theoretical number of theoretical plates for a packing in a laboratory distillation column determined? For example, what is the theoretical number of theoretical plates for 1m of θ-ring packing? Does the theoretical number of theoretical plates vary for different systems? Is calibration necessary, and if so, how should it be carried out? I seek advice from experts
1 m = 5 to 9 theoretical plates; this varies depending on the system, as well as the design of the packed tower
The equivalent plate height of θ-ring packing with a size of 2–3 mm used for laboratory distillation separation is approximately 1 m, corresponding to 20–30 theoretical plates, depending on the system being separated. Based on the feed composition obtained during the operation of the laboratory distillation unit, as well as the compositions of the materials at the top and bottom of the tower, the theoretical number of plates can be determined through process simulation calculations. From this, the equivalent plate height HETP or the theoretical number of plates per meter of packing can be calculated.