| 摘要 |
<p>A constant temperature distilling process comprises using a degassed liquid to implement a drain-to-vacuum process, to prepare a constant temperature distillation unit for vacuum distillation or vacuum cooling. A vacuum distilling temperature for the unit is set for a degassed solution contained in the unit to boil and evaporate, such that a thermal equilibrium between evaporation and condensation can be maintained throughout the unit, and evaporation heat produced in the process can be recovered and condensate produced can be collected. Also claimed is a multi-stage vacuum distilling process for solution separation, and a multi-stage vacuum cooling and freezing process for solution separation.</p> |
