Isothermal fractional distillation of materials of differing volatilities

Abstract

Abstract Fractional distillation, i.e., separation of materials of differing volatilities, is effected under substantially isothermal conditions as opposed to isobaric conditions in the ordinary fractional distillation column. Instead of maintaining substantially the same pressure in a column and varying the temperature in the different stages, as in the customary isobaric fractional distillation, the temperature is maintained substantially or relatively constant and vapors from the different stages are compressed and introduced into the next stage. In other words, there is relatively little change in temperature but a change in pressure from stage to stage. This results in more efficient distillation with much smaller increase in entropy in the system.

Inventors

• 👤 Arnold Gunther

Bibliographic Details