How to calculate the vacuum material extraction flow rate
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This post was last edited by meinijiuok on 2018-8-18 08:22. Dear experts: The conditions are as shown in the figure. What is the flow rate of toluene in the sampling tube? The flow rate of the toluene liquid can’t be calculated based on the vacuum pumping rate, right? There is definitely a relationship between the sampling rate of toluene and the relative height of the toluene’s starting position with respect to the feed inlet, but what is the specific functional relationship?
It was suddenly realized that many calculation scenarios in fine chemical engineering are more complex than those in bulk chemical engineering
Is this question that difficult? Isn’t there a single capable member among the Haichuan sea friends?
v=280 is the factory-specified performance parameter of the vacuum pump; it does not represent the actual flow rate of the medium. The information shown in your diagram is not sufficient to calculate the medium flow rate
It cannot be calculated using Bernoulli’s equation; the conditions are not met
The flow velocity of toluene in the extraction tube is 39.6 m/s. The flow rate of the toluene liquid is calculated based on the amount of liquid that flows out, or via material balance
Could you be more specific? Could you please explain the calculation process for 39.6 m/s? ? ? ? I used Bernoulli’s equation, assuming a pumping height of 2 meters, and the calculated result was 13.38 m/s
I used Bernoulli’s equation for the calculation; assuming a suction height of 2 meters, the result obtained was 13.38 m/s. However, apart from using Bernoulli’s equation, I really can’t think of any other methods for calculation. If you know any other methods, please let me know