Process for Improving Protein Recovery in Stillage Processing Streams
AssigneeEcolab USA Inc.
InventorLan Xiao
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Abstract
Provided is a method of processing stillage from an ethanol production process. The method comprises treating stillage comprising oil, protein, and water upstream of a separation, concentration or evaporation step with at least one coagulant and at least one flocculant, thereby forming treated thin stillage comprising solids which include at least a portion of the oil and protein; and clarifying the treated stillage via a solid/liquid separation process thereby forming clarified stillage and a separated solids phase comprising at least a portion of the solids from the treated stillage.
Claims29
A method of processing stillage from an ethanol production process, the method comprising:
- treating stillage comprising oil, protein, and water upstream of a separation, concentration or evaporation step with at least one coagulant and at least one flocculant, to produce a treated stillage comprising solids which include at least a portion of the oil and protein;
- and
- subjecting the treated stillage to a solid/liquid separation process, to produce a clarified stillage comprising a clarified aqueous phase and a separated solids phase, wherein the separated solids phase comprises at least a portion of the solids from the treated stillage.
Dependencies are inferred from the claim text.