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US 12,116,642 B2Granted
Lignocellulosic biomass treatment methods and systems for production of biofuels and biochemicals
AssigneeExxonMobil Technology and Engineering Company
InventorsChangyub Paek, Arsam Behkish, Giovanni Pilloni
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Abstract
The present disclosure relates to methods and systems for converting biomass comprising lignocellulosic material into biofuels and biochemicals that contribute to reduction of greenhouse gas emissions. In particular, the present disclosure relates to methods and systems for the removal or reduction of impurities during lignocellulosic biomass processing to enhance biorefinery production of biofuels and biochemicals.
Claims22
A method comprising:
- hydrolyzing lignocellulosic biomass, thereby forming a hydrolysis steam;
- separating lignin from the hydrolysis stream, thereby forming a lignin-rich stream and a lignin-free stream;
- selecting an amount of lignin from at least a portion of the lignin-rich stream to produce an optimal amount of lignin-based activated carbon, wherein the optimal amount of lignin-based activated carbon is sufficient to remove a threshold amount of impurities in the lignin-free stream to form a purified lignin-free stream without generating excess lignin-based activated carbon than is needed to remove the threshold amount of impurities;
- processing the amount of lignin from at least a portion of the lignin-rich stream to produce the optimal amount of lignin-based activated carbon;
- and
- purifying the lignin-free stream using lignin-based activated carbon, thereby producing the purified lignin-free stream and an impure lignin-based activated carbon with impurities.
3 more elements
A system comprising:
- a biorefinery that comprises integrated equipment to convert biomass to produce at least one or more of a biofuel and biochemical, the biorefinery configured to perform the method of:
- hydrolyzing lignocellulosic biomass, thereby forming a hydrolysis steam;
- separating lignin from the hydrolysis stream, thereby forming a lignin-rich stream and a lignin-free stream;
- selecting an amount of lignin from at least a portion of the lignin-rich stream to produce an optimal amount of lignin-based activated carbon, wherein the optimal amount of lignin-based activated carbon is sufficient to remove is a threshold amount of impurities in the lignin-free stream to form a purified lignin-free stream without generating excess lignin-based activated carbon than is needed to remove the threshold amount of impurities;
- processing the amount of lignin from at least a portion of the lignin-rich stream to produce the optimal amount of lignin-based activated carbon;
- and purifying the lignin-free stream using lignin-based activated carbon, thereby producing the purified lignin-free stream and an impure lignin-based activated carbon with impurities.
3 more elements
Dependencies are inferred from the claim text.