| 摘要 |
<p>The invention is a method with equipments for conducting the soli-liquid-vapor multiple phase transformation steps of vacuum freezing, wet distillative freezing, vacuum crystallization and primary refrigerant eutectic freezing. All processes require simultaneous vaporization and crystallization. The inventive method consists of (1) distributing the solution over a rotating surface area (53) to form liquid films, (2) subjecting the liquid films to simultaneous vaporization and crystallization, (3) removing the crystals from the surfaces (53) and, (4) transporting the crystals to the next processing zone. The surfaces (53) can be rotating screws with intermeshing flights or set of disks on rotating shafts. The screws are partially submerged in the solution. Elements of the screws are wetted when they are rotated into the pool.</p> |
