How is the reflux ratio calculated in actual distillation production?
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Hello everyone: In the principles of chemical engineering, we are familiar with the concept of reflux ratio. But based on the instrument data available in actual production, how is the reflux ratio calculated? Has there been some change in the reflux ratio in actual production compared to the theoretical concept? Examples: 1. The reflux ratio of the pressure column = feed rate to the pressure column / output rate. 2. The reflux ratio of the pressure column = feed rate to the pressure column – output rate / output rate. 3. The reflux ratio of the pressure column = feed rate to the pressure column – output rate – feed rate to the atmospheric pressure column / output rate. How should this be calculated in actual production? Thank you! ! !
I’ve learned a lot. I’ve never seen such a definition; isn’t the reflux ratio defined as RR=R/D?
Isn’t the feed rate equal to the output rate? Then the material balance is off.
What does that mean? Is the calculation of the reflux ratio in actual production not done in the same way as described in chemical engineering principles? ? The principle is the same, right?
The concept is the same, you know. Is there a gap between the practical and the theoretical? I don’t understand either.
In fact, the original poster has confused the *practical reflux ratio with the theoretical reflux ratio. In actual production, workers use the ratio of feed volume to reflux volume to denote the reflux ratio, while in design, the ratio of product volume to reflux volume is used to represent the reflux amount
Ah, I can’t answer this multiple-choice question. If there is such a difference between theory and reality, then the theory is nonsense. :lol :lol :lol
The reflux ratio can be calculated in actual production using instrument data; a flow meter is sufficient for this purpose!
The reflux ratio is the ratio of the amount of fluid returned to the amount of fluid extracted
The reflux ratio is the ratio of the amount of fluid returned to the amount of fluid extracted
Reflux ratio = reflux volume / production volume
In practice, both the return flow and the extracted flow are equipped with flow meters; a ratio comparison is sufficient.
Reflux ratio = reflux / production. The operating reflux ratio is 1.5 times the minimum reflux ratio of the operating column.