System and method for producing a sugar stream with front end oil separation

A method for producing a sugar stream with front end oil separation comprising:

• mixing ground grain particles with a liquid to produce a slurry including starch and free oil;
• subjecting the slurry to liquefaction to provide a liquefied starch solution including the free oil followed by separating a solids portion including fiber and germ from the liquefied starch solution and then separating the free oil from the liquefied starch solution to produce only two streams with one stream including the separated free oil and the other stream including the liquified starch solution, wherein the separating of the free oil occurs prior to saccharification of the starch to yield an oil by product;
• thereafter, subjecting at least a portion of the liquefied starch solution to saccharification to convert the starch to simple sugars and produce a saccharified stream including the simple sugars;
• after saccharification but prior to further processing of the simple sugars, initially separating the saccharified stream, via microfiltration, into a first solids portion and a first liquid portion including the simple sugars, wherein the first liquid portion is a sugar stream having a dextrose equivalent of at least 20 DE and a total unfermentable solids fraction that is less than or equal to 30% of a total solids content;
• and
• subjecting the first solids portion to fermentation followed by distillation thereby producing ethanol and separately subjecting the sugar stream to at least one of carbon filtration, ion exchange, or evaporation followed by a sugar conversion process to produce a biochemical other than ethanol, which remains separate from the ethanol produced from the first solids portion.

A method for producing a sugar stream with front end oil separation comprising:

• mixing ground grain particles with a liquid to produce a slurry including starch and free oil;
• subjecting the slurry to liquefaction to provide a liquefied starch solution including the free oil followed by separating the free oil from the liquefied starch solution to produce only two streams with one stream including the separated free oil and the other stream including the liquified starch solution, wherein the separating of the free oil occurs prior to saccharification of the starch to yield an oil by product;
• thereafter, subjecting at least a portion of the liquefied starch solution to saccharification to convert the starch to simple sugars and produce a saccharified stream including the simple sugars;
• after saccharification but prior to further processing of the simple sugars, initially separating the saccharified stream into a first solids portion and a first liquid portion including the simple sugars, wherein the first liquid portion is a sugar stream having a dextrose equivalent of at least 20 DE and a total unfermentable solids fraction that is less than or equal to 30% of a total solids content;
• and
• subjecting the first solids portion to fermentation followed by distillation thereby producing ethanol and separately subjecting the sugar stream to at least one of carbon filtration, ion exchange, or evaporation followed by a sugar conversion process to produce a biochemical other than ethanol, which remains separate from the ethanol produced from the first solids portion.