CLARK R GRIFFITH
Engineers in Lansdale, PA
License number
Pennsylvania PE040572E
Category
Engineers
Type
Professional Engineer
Address
Address
Lansdale, PA 19446
Professional information
Electrocoagulation And Polymeric Suspended Solids Reduction
US Patent:
2007003, Feb 15, 2007
Filed:
Aug 12, 2005
Appl. No.:
11/203396
Inventors:
Clark Griffith - Lansdale PA, US
Assignee:
MPC Inc. - Wilmington DE
International Classification:
C12P 7/06, C12C 11/00, C12M 3/00
US Classification:
426011000, 435161000, 435289100
Abstract:
In the drying of thin stillage in a corn-to-ethanol process, suspended solids are largely separated from the thin stillage by electrocoagulation and polyacrylamide flocculation. Whole stillage contains solids that must be dried. Prior to the dryer, the whole stillage is processed in a centrifuge that generates wet cake. The wet cake goes directly to the dryer. The thin stillage from the centrifuge is treated with electrocoagulation and polyacrylamide polymer prior to being sent to a rotary screen drum and settling tank. The settling tank supernate is then sent to an evaporator. Condensate is taken off in the evaporator leaving syrup that is sent to the distiller's dried grains with solubles (DDGS) dryer along with the wet cake. The syrup is of significantly higher solids content with the current invention than with Prior Art technology. Energy savings in the DDGS dryer are achieved by the removal of water in the evaporation prior to drying