Wet oxidation of biomass
First Claim
1. A method of pretreating a biomass slurry in a continuous process, comprising:
- in the continuous process, obtaining a dry matter content of the biomass slurry of 15-60% by weight;
in the continuous process, introducing a flow of steam to a reaction chamber containing the biomass slurry;
while introducing the flow of steam to the reaction chamber, introducing a flow of oxygen to the reaction chamber and the biomass slurry, thereby causing oxidation of a lignin component of the biomass slurry; and
in the continuous process, flashing the biomass to a secondary holding unit by utilizing a pressure difference.
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Abstract
The present disclosure comprises methods, apparatus, components, and techniques for pretreatment of biomaterials using targeted wet oxidation. The targeted wet oxidation pretreatment is an upstream method for converting solid biomass into fuels and/or specialty chemicals. Embodiments of the present disclosure comprise methods carried out on biomaterials to selectively oxidize lignin components of the biomass, thereby resulting in bio accessible/digestible biomass fibers. In embodiments of the present disclosure, such methods may comprise pretreatment processes to prepare the biomaterials for a subsequent fermentation or other like conversion may be carried out to result in useful bio fuels or other bioproducts.
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Citations
16 Claims
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1. A method of pretreating a biomass slurry in a continuous process, comprising:
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in the continuous process, obtaining a dry matter content of the biomass slurry of 15-60% by weight; in the continuous process, introducing a flow of steam to a reaction chamber containing the biomass slurry; while introducing the flow of steam to the reaction chamber, introducing a flow of oxygen to the reaction chamber and the biomass slurry, thereby causing oxidation of a lignin component of the biomass slurry; and in the continuous process, flashing the biomass to a secondary holding unit by utilizing a pressure difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of oxidizing lignin components in a biomass slurry, comprising:
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in a continuous process, removing water from the biomass slurry to achieve a dry matter content of 15-60% by weight; in the continuous process, concurrently subjecting the biomass slurry to a stream of oxygen and a stream of steam; and in the continuous process, flashing the biomass to a secondary holding unit by utilizing a pressure difference. - View Dependent Claims (14, 15, 16)
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Specification