Pressure swing distillation and secondary distillation
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Currently, the conditions for using double-column distillation are not available; is it possible to achieve the desired result by carrying out distillation in two stages? Performing normal pressure once, then pressurization a second time, or reducing pressure once and returning to normal pressure a second time – apart from the inability to operate continuously, are there any other effects?
It mainly depends on the effect of pressure on phase equilibrium.
Do you want to process the material twice on one set of equipment? It’s fine for experimenting or temporarily handling some materials, but it’s not necessary for production. Operating costs and complexity increase, along with the risk of cross-contamination
Yes. First do rough processing, then further processing.
It’s at a high energy consumption level. What does it mean that the conditions for using dual-tower vacuum distillation are not met? What does it specifically refer to?