METHOD AND SYSTEM FOR FRACTIONATION OF LIGNOCELLULOSIC BIOMASS
First Claim
1. A method of fractionating lignocellulosic biomass material comprising:
- feeding the biomass into a devolatilization reactor to remove volatile components of the biomass;
feeding the prepared biomass into a hemicellulose hydrolysis reactor to separate and hydrolyze hemicellulose;
separating the biomass into a first solid component and a liquid component, wherein the liquid component includes hydrolyzed hemicellulose in water or solvent and wherein the solid component includes cellulose and lignin and has less than about 10% hemicellulose;
feeding the solid component into a cellulose hydrolysis reactor comprising a continuous superheated steam reactor to hydrolyze and vaporize the cellulose component; and
condensing the vaporized cellulose.
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Abstract
Methods and systems for fractionating lignocellulosic biomass including hemicellulose, cellulose and lignin, including exploding the biomass cells to devolatilize the biomass, hydrolyzing the hemicellulose to produce a liquid component including hemicellulosic sugars and a solid component including less than 10% hemicellulose, separating the liquid and solid components, vaporizing the cellulose in the solid component, and condensing the cellulosic sugar vapors. The methods and systems may vaporize the cellulose in a continuous steam reactor at a temperature of about 400-550° C. and a pressure of about 1-3 bara. Electromagnetic and/or electroaccoustic treatment such as ultrasound and/or microwave treatment may be applied to the biomass immediately before or during cellulose hydrolysis.
190 Citations
35 Claims
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1. A method of fractionating lignocellulosic biomass material comprising:
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feeding the biomass into a devolatilization reactor to remove volatile components of the biomass; feeding the prepared biomass into a hemicellulose hydrolysis reactor to separate and hydrolyze hemicellulose; separating the biomass into a first solid component and a liquid component, wherein the liquid component includes hydrolyzed hemicellulose in water or solvent and wherein the solid component includes cellulose and lignin and has less than about 10% hemicellulose; feeding the solid component into a cellulose hydrolysis reactor comprising a continuous superheated steam reactor to hydrolyze and vaporize the cellulose component; and condensing the vaporized cellulose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for fractionating lignocellulosic biomass material comprising:
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means for exploding cells of the biomass material; means for hydrolyzing the biomass material to form a liquid component including hydrolyzed hemicellulose and a solid component including cellulose and lignin and less than 10% hemicellulose; means for separating the liquid component and the solid component; and first means for hydrolyzing cellulose in the solid component to form a cellulosic sugar vapor. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification