PROCESS FOR INCREASING DIGESTION EFFICIENCY OF LIGNOCELLULOSIC MATERIAL IN A TREATMENT VESSEL
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United States of America Patent
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Issued Date -
May 25, 2023
app pub date -
Nov 22, 2022
filing date -
Nov 23, 2021
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Abstract
A process for increasing digestion efficiency of lignocellulosic material in a treatment vessel includes providing lignocellulosic material comprising lignocellulosic biomass, providing an alkyl polyglycoside, an alkoxylated alcohol, and a white liquor comprising sodium hydroxide and sodium sulfide, combining the lignocellulosic material, the alkyl polyglycoside, the alkoxylated alcohol, and the white liquor to form a mixture, and heating the mixture in the treatment vessel to a temperature of from about 125° C. to about 185° C. to digest at least a portion of the lignocellulosic material. The alkyl polyglycoside and the alkoxylated alcohol are present in the mixture in a weight ratio of actives from about 5:95 to about 95:5, respectively. The mixture is free of added surfactants that are not the alkyl polyglycoside and/or the alkoxylated alcohol. The process has increased digestion efficiency as compared to a process that does not utilize a combination of the alkyl polyglycoside and the alkoxylated alcohol.
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