INTEGRATED ETHANOL AND PRETREATMENT FACILITY
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United States of America Patent
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Nov 9, 2023
app pub date -
Apr 24, 2023
filing date -
Oct 22, 2020
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An integrated facility for the co-production of ethanol and the pretreatment of impure vegetable oils, waxes and (animal) fats is provided. A by-product from the ethanol plant, such as distillers corn oil or distillers sorghum oil, can be directly refined on site to remove contaminants such as metals, phospholipids and inorganic anions, to enable use as ready feedstocks for a renewable diesel hydrotreatment plant. The utility of the ethanol plant infrastructure can be directly harnessed to pretreat and purify a variety of impure feedstock materials. The pretreatment reduces catalytic poisoning in the reduction process at refining facilities during the synthesis of renewable diesel. By-products of the pretreatment process are recycled to various parts of the ethanol plant for incorporation into the animal feed(s) produced by the ethanol plant or incorporated into the existing wastewater treatment and disposal system within the ethanol plant.
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