Principles and conditions for side extraction in distillation columns
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I’m not quite clear about the principle and scope of application of counter-current stripping, as well as the location where stripping takes place. For example, in a solution that contains ammonia and acidic gases, gas stripping distillation is used: the acidic gases emerge from the top of the tower, while ammonia is stripped out at a position slightly lower down. I would appreciate some guidance; any relevant materials would be even more helpful
The main consideration is that due to the different boiling points of various components, it is possible to separate some of the intermediate components in the tower. However, only a mixture of the heavier water components and the lighter intermediate components can be separated; it is not possible to obtain pure components directly. Otherwise, there would be no need for double-column distillation
Is the poster referring to sideline production? Qualified products are obtained by controlling the temperature difference.
This is mainly due to the different boiling points of various components, but the extracted product can only be close to a pure component