Patent ID: 9051538
Filing Date: 2015-06-09
Classification: A23J,A23K,B03D,B30B,C02F,C07K,C08B,C08L,C11B,C12F,Y02P,Y02W

Abstract:
1. A multi-stage substantially continuous process for separating a source stream said source stream intermixedly containing fibers, water, protein and oil, said process being configured for separating the source stream into streams each containing predominantly one component, said source stream containing dried distillers grains with solubles, said process comprising the stages of: providing a source stream comprising dried distillers grain with solubles, said dried distillers grain stream containing water, oil, protein and fibers; separating said source stream into a second stream and a third stream, said second stream having a non-aqueous portion containing predominantly fibers, said third stream having a non-aqueous portion containing predominantly a mixture of oil and protein, separating a fourth stream and a fifth stream from said third stream, said fourth stream containing about 99 percent water and said fifth stream containing between about 15 percent to about 25 percent oil and protein, wherein separating the fourth stream and the fifth stream from said third stream is accomplished by passing said third stream through a second chemical additive pipe having a second chemical addition inlet and a third chemical addition inlet, said second chemical additive pipe leading toward a Dissolved Air Floatation device, said third chemical addition configured to occur about 15 seconds after the second chemical addition based on an average volumetric flow rate through the pipe; adding between about 5 to about 25 ppm of a cationic acrylamide copolymer to the second chemical addition inlet; and feeding said third stream into the a Dissolved Air Floatation device wherein actions of said Dissolved Air Floatation device separate said third stream into the fourth stream and the fifth stream; and separating from the fifth stream a stream containing predominantly oil and a stream comprising predominantly protein through the steps of drying, size reduction, and pressing out the oil.