Method for carrying out the combined operation of a bioethanol production unit and a biogas unit
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United States of America
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Feb 25, 2025
Grant Date -
Dec 14, 2023
app pub date -
Aug 29, 2023
filing date -
Aug 29, 2023
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Abstract
Methods combine the operations of a bioethanol production unit and a biogas unit and comprise: (a) mashing corn meal from a dry milling step with at least 0.1 t of dry matter in the form of whole stillage and at least 0.1 m3 of outflow from the biogas unit per tonne of corn meal; (b) feeding the mash from (a) to a cooking stage with mash temperatures below the gelatinization temperature of the starch in the corn meal, followed by an ethanol-forming fermentation step and then feeding the fermented mash to a distillation step; and (c) feeding the whole stillage from (b) to the mashing step in (a) and to the biogas unit.
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