초록 ▼

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 cry

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.

대표청구항 ▼

A process for producing a slurry containing concentrated mother liquor and ice crystals from a water solution feedstream comprising the steps of: (a) supplying said feedstream to a slurry reservoir; (b) circulating slurry from said reservoir through a crystallizer where ice is deposited on heat exch

A process for producing a slurry containing concentrated mother liquor and ice crystals from a water solution feedstream comprising the steps of: (a) supplying said feedstream to a slurry reservoir; (b) circulating slurry from said reservoir through a crystallizer where ice is deposited on heat exchange surfaces of the crystallizer; (c) providing scrapers immersed in said slurry for removing the ice from said heat exchange surfaces; (d) utilizing the pressure of circulating slurry to reciprocate said scrapers across the surfaces of said walls; and (e) removing slurry from said reservoir.