What is the typical residence time at the bottom of the vacuum tower in a atmospheric and vacuum distillation unit, in minutes?
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I would like to ask the experts: what is the typical residence time at the bottom of the vacuum distillation column in a vacuum distillation unit, in minutes?
The residence time at the bottom of the tower depends entirely on the liquid level at that point, right?
Under relatively stable operating conditions, the residence time = volume occupied by the bottom liquid level / (feed rate – side stream withdrawal). It can be seen that the residence time is related to the type of crude oil being processed, the product separation scheme, the degree of processing, and the throughput. It is a relative variable.