Freeze crystallization subassembly

摘要

The invention is directed to a freeze crystallization subassembly having means for continuously removing crystals formed on a heat transfer surface from the surface. A scraper shuttle is moved across the heat transfer surface by a fluid being refrigerated to remove crystals from the surface. The crystals are carried to a mixer where they are mixed with incoming feed until a circulating slurry is produced. Means is provided to remove slurry from the mixer.