What are the advantages and disadvantages of using a reflux ratio controller versus forced reflux discharge?
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What are the advantages and disadvantages of using a reflux ratio controller for gravity-driven reflux, as compared to using the opening degree of control valves to force reflux?
This depends on the physicochemical properties of the specific material in question, and corresponding processes need to be established. It needs to be controlled according to the process requirements.
The reflux ratio controller is mainly used in batch distillation; the condenser needs to be elevated, and interlock control is not possible. Forced reflux is mainly used in continuous distillation; it can be controlled via interlock systems, but it requires auxiliary equipment such as buffer tanks, control valves, flow meters, and pumps, resulting in high costs.