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US 2013/0157333 A1Published application
Method of treating ethanol production byproducts
AssigneeShell Oil Company
InventorsPamela Karen TETARENKO, Paul Richard WEIDER, Robert Lawrence BLACKBOURN
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Abstract
A method of treating ethanol production byproduct is provided by treating wet distillers grain or stillage with a solution containing at least one α-hydroxysulfonic acid to produce at least one fermentable sugar containing product. Fermentable sugar useful for the production of biofuels or ethanol can be produced from such methods. The α-hydroxysulfonic acid can be easily removed from the product and recycled.
Claims30
A method of treating ethanol production byproduct comprising:
- (a) providing a wet distillers grain;
- and (b) contacting the wet distillers grain with a solution containing at least one α-hydroxysulfonic acid thereby hydrolyzing the wet distillers grain to produce at least one fermentable sugar containing product.
A method comprising:
- (a) providing grain;
- (b) grinding said grain to produce ground grain;
- (c) treating said ground grain to produce a fermentable sugar mixture;
- (d) fermenting the fermentable sugar mixture to produce fermented product containing ethanol, solids and water;
- (e) separating said fermented product to produce ethanol and stillage;
- and (f) contacting at least a portion of the stillage with a solution containing at least one α-hydroxysulfonic acid thereby hydrolyzing the stillage to produce at least one fermentable sugar containing product.
3 more elements
A method comprising:
- (a) providing grain;
- (b) grinding said grain to produce ground grain;
- (c) treating said ground grain to produce fermentable sugar mixture;
- (d) fermenting said fermentable sugar mixture to produce fermented product containing ethanol, solids and water;
- (e) separating said fermented product to produce ethanol and stillage;
- (f) separating stillage to produce thin stillage and wet distillers grain;
- and (g) contacting at least a portion of the wet distillers grain with a solution containing at least one α-hydroxysulfonic acid thereby hydrolyzing the stillage to produce at least one fermentable sugar containing product.
4 more elements
Dependencies are inferred from the claim text.