Why hasn’t distillation in the distillation tower achieved the expected results?
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It turns out that the factory originally had a small production line consisting of 4 distillation towers and evaporators. To increase output, this line was expanded by a factor of 4. Currently, each of the 4 towers is 27 meters tall and is equipped with thin-film evaporators; the vacuum level is the same as that in the old line. However, the purity of the product no longer increases over time, remaining between 93% and 94%. I would appreciate any advice you can offer! Kneel in gratitude
:(Was the evaporator replaced?) You haven’t provided enough information. When scaling up, it’s necessary to take into account the decrease in the separation efficiency of the tray layers, especially in packed towers
How to zoom in? Is four times the height of the tower multiplied by 4 and its radius multiplied by 2? What about the height of the packing layer? What is the evaporation rate? This is creating something out of nothing. . . . . .
Although the scaling effect in distillation columns is small, it is not a simple multiplication factor. It needs to be calculated and designed.