F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
F26B 7/00 (2006.01) C13B 30/02 (2011.01) C13K 5/00 (2006.01)
Patent
CA 2481023
Systems and methods for processing a high-lactose aqueous fluid (HLAF)(3), such as permeate from ultrafiltration of whey fluid, are described. The preferred process includes concentrating HLAF (3) containing from about 1 to about 35% solids, wherein at least 50% of the solids are lactose, to form a concentrated HLAF (3) containing from about 45 to about 65% solids; further concentrating the HLAF (3) to form a highly concentrated HLAF (3) containing from about 70 to about 80% solids; cooling the highly concentrated HLAF (3) with a gaseous fluid to create a cooling, concentrating, crystallizing cascade to further concentrate the HLAF (3) to form a partially crystallized HLAF (3) containing from about 78 to about 88% solids; and drying the partially crystallized HLAF (3) in an air-lift dryer (24) to form a product rich in crystalling alpha-lactose monohydrate. An air-lift dryer (24) having diverging sidewalls (32) and methods of using same are also disclosed.
L'invention porte sur des systèmes et des procédés de traitement d'un liquide aqueux à teneur élevée en lactose (HLAF) tel que le perméat obtenu à partir de l'ultrafiltration de lactosérum. Le procédé préféré consiste à concentrer un HLAF contenant environ 1 à 35 % de solides, au moins 50 % des solides étant du lactose, afin de former un HLAF concentré contenant environ 45 à 65 % de solides ; puis à concentrer le HLAF de manière à former un HLAF hautement concentré contenant environ 70 à 80 % de solides ; à refroidir le HLAF hautement concentré avec un fluide gazeux afin d'entraîner un refroidissement, une concentration et une cristallisation en cascade pour concentrer le HLAF dans le but de former un HLAF partiellement cristallisé contenant environ 78 à 80 % de solides ; et à sécher le HLAF partiellement cristallisé dans un séchoir à agitation pneumatique de manière à former un produit riche en monohydrate alpha-lactose cristallin. L'invention concerne également un séchoir à agitation pneumatique doté de parois divergentes et des procédés d'utilisation associés.
Keller Technologies Inc.
Macrae & Co.
Relco Llc
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