Opening ratio of sieve trays in the vacuum distillation tower
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At the bottom of the vacuum distillation tower, there are four layers of sieve trays, and the porosity of each layer is different. Question: When arranged in these four layers, should the porosity decrease or increase from top to bottom?
Are the four layers arranged in tower sections with the same diameter? If that’s the case, under stripping action, the liquid phase load should become smaller as one goes deeper, and the porosity should also decrease.
Without considering mid-stream backflow, the gas-liquid phase load decreases from top to bottom, and the porosity decreases.
As the liquid load decreases from top to bottom, the porosity should decrease