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When there is voiding or overlap in the products of a distillation column, how is the balance between the gas and liquid phases within the column maintained?

2019-05-18View Original

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When there is degassing between the bottom product and the top product of a distillation column, where do the intermediate fractions go? Is it an analysis data error or is the operational precision too high? When there is overlap in the products of a distillation column, how is equilibrium achieved between the gas and liquid phases inside the column? I hope the experts will not hesitate to share their knowledge!
Reply #22019-05-18
It should have good operational precision. Generally, Enneberg distillation is used for boiling range analysis, rather than the actual boiling point. Most cases of voiding occur when the operating precision of the fractionation tower is relatively high; in fact, it’s not really that high.
Reply #32019-05-20
Personally, I believe this section of grouping exists and that gas-liquid phase exchange has been taking place in a certain tray. Perhaps due to the position of the trays or the extraction temperature, samples should be obtained occasionally; it seems that the separation precision is too high

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