Modular system for organosolv fractionation of lignocellulosic feedstock
First Claim
1. A modular system for organosolv fractionation of lignocellulosic feedstock into component parts and further processing of said component parts;
- the modular process comprising;
a first processing module configured for receiving, physically processing, and physico-chemically digesting a lignocellulose feedstock with a separately supplied organic solvent thereby extracting component parts therefrom said feedstock, and separating said component parts into a cellulosic solids fraction and a first liquid fraction;
a second processing module configured for receiving therein said cellulosic solids fraction and for separating therefrom at least ethanol, a first class of lignin derivatives, and a de-lignified first stillage;
a third processing module configured for separating the first liquid fraction into a second class of lignin derivatives, a third class of lignin derivatives and a filtrate, and for recovering a portion of the organic solvent from the filtrate by distillation thereby producing a second stillage; and
a fourth processing module configured for separating the second stillage into one or more of an acetic acid-containing liquid fraction, a fourth class of lignin derivatives, a sugar syrup, and a semi-solid waste material.
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Abstract
A modular process for organosolv fractionation of lignocellulosic feedstocks into component parts and further processing of said component parts into at least fuel-grade ethanol and four classes of lignin derivatives. The modular process includes a first processing module configured for physico-chemically digesting lignocellulosic feedstocks with an organic solvent thereby producing a cellulosic solids fraction and a liquid fraction, a second processing module configured for producing at least a fuel-grade ethanol and a first class of novel lignin derivatives from the cellulosic solids fraction, a third processing module configured for separating a second class and a third class of lignin derivatives from the liquid fraction and further processing the liquid fraction to produce a distillate and a stillage, a fourth processing module configured for separating a fourth class of lignin derivatives from the stillage and further processing the stillage to produce a sugar syrup.
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Citations
19 Claims
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1. A modular system for organosolv fractionation of lignocellulosic feedstock into component parts and further processing of said component parts;
- the modular process comprising;
a first processing module configured for receiving, physically processing, and physico-chemically digesting a lignocellulose feedstock with a separately supplied organic solvent thereby extracting component parts therefrom said feedstock, and separating said component parts into a cellulosic solids fraction and a first liquid fraction; a second processing module configured for receiving therein said cellulosic solids fraction and for separating therefrom at least ethanol, a first class of lignin derivatives, and a de-lignified first stillage; a third processing module configured for separating the first liquid fraction into a second class of lignin derivatives, a third class of lignin derivatives and a filtrate, and for recovering a portion of the organic solvent from the filtrate by distillation thereby producing a second stillage; and a fourth processing module configured for separating the second stillage into one or more of an acetic acid-containing liquid fraction, a fourth class of lignin derivatives, a sugar syrup, and a semi-solid waste material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- the modular process comprising;
Specification