System and method for extraction of chemicals from lignocellulosic materials
First Claim
1. An organosolv process for producing bio-products by decomposing lignocellulosic materials comprising:
- providing an initial lignin solvent comprising;
water,an acid, anda lignin dissolving chemical comprising butanol;
placing the intial lignin solvent in contact with a biomass to form a circulation solvent comprising butanol, butyl acetate, and furfural; and
recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass for a period of time; and
after the period of time, separating material from the circulation solvent.
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Abstract
An organosolv process for producing bio-products by decomposing lignocellulosic materials comprises providing an initial lignin solvent with water, an acid, and a lignin dissolving chemical comprising at least one of an organic ester, butyl acetate, an organic furan, and furfural. The process also includes placing the lignin solvent in contact with a biomass to form a circulation solvent, and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass. The circulating of the circulation solvent occurs for a period of time, after which, the process then includes separating material such as chemicals and lignin from the circulation solvent. The chemicals can be recycled as new solvent or sold while lignin can be used as natural and renewable colorant for polymers such as poly lactic acid.
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Citations
37 Claims
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1. An organosolv process for producing bio-products by decomposing lignocellulosic materials comprising:
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providing an initial lignin solvent comprising; water, an acid, and a lignin dissolving chemical comprising butanol; placing the intial lignin solvent in contact with a biomass to form a circulation solvent comprising butanol, butyl acetate, and furfural; and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass for a period of time; and after the period of time, separating material from the circulation solvent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An organosolv process for producing bio-products by decomposing lignocellulosic materials comprising:
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providing an initial lignin solvent comprising; water, an acid, and a lignin dissolving chemical comprising butanol, butyl ester, and furan; placing the initial lignin solvent in contact with a biomass to form a circulation solvent comprising butanol, butyl acetate, and furfural; and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass for a period of time; and after the period of time, separating material from the circulation solvent. - View Dependent Claims (31)
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32. An organosolv process for producing bio-products by decomposing lignocellulosic materials comprising:
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providing a first initial lignin solvent comprising; water, an acid comprising acetic acid, sulfuric acid, or both, and a lignin dissolving chemical comprising butanol; placing the first initial lignin solvent in contact with a first biomass to form a circulation solvent comprising butanol, butyl ester, and furfural; and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass for a period of time; after the period of time, dividing the circulation solvent into an aqueous portion, an organic material portion, and lignin; and reusing at least a portion of the aqueous portion, the organic material portion, or both in an initial lignin solvent to be placed in contact with a new biomass. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification