ETHANOL PRODUCTION FROM LIGNOCELLULOSIC BIOMASS WITH RECOVERY OF COMBUSTIBLE FUEL MATERIALS
First Claim
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1. A process for converting biomass into ethanol, comprising:
- processing a first portion of lignocellulosic biomass to produce ethanol and non-ethanol forming materials, the processing including heating;
collecting at least a portion of the non-ethanol forming materials left after the processing;
drying the collected non-ethanol forming materials;
burning the non-ethanol forming materials to generate heat; and
supplying the heat to a processing of a second portion of lignocellulosic biomass to produce ethanol.
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Abstract
Described are processes for producing a product, such as ethanol, from lignocellulosic biomass, and producing a burnable fuel material from byproducts. The burnable fuel material can be burned on site to produce energy to feed back into the production process.
26 Citations
21 Claims
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1. A process for converting biomass into ethanol, comprising:
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processing a first portion of lignocellulosic biomass to produce ethanol and non-ethanol forming materials, the processing including heating; collecting at least a portion of the non-ethanol forming materials left after the processing;
drying the collected non-ethanol forming materials;burning the non-ethanol forming materials to generate heat; and supplying the heat to a processing of a second portion of lignocellulosic biomass to produce ethanol. - View Dependent Claims (2, 3, 4)
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5. A process for the isolation of energy containing material from process streams of the process of converting biomass into ethanol comprising:
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isolating solid residues from a process stream produced from the production of ethanol from lignocellulosic biomass; concentrating non-ethanol forming materials in a liquid process stream left after ethanol and solids removal producing a concentrate; and drying the solid residues and concentrate to produce a burnable fuel. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for recovery of a burnable fuel material from the conversion of lignocellulosic biomass to ethanol comprising:
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processing lignocellulosic biomass to produce a product stream comprising ethanol, solids and other organic material; removing the ethanol from the product stream leaving a non-product stream; isolating the solids from the non-product stream; removing water from the non-product stream producing a concentrated non-product stream; and drying the solids and concentrated non-product stream to produce a burnable fuel. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A process for recovery of burnable fuel material comprising:
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obtaining lignocellulosic biomass from plant material grown within about 50 miles of a lignocellulosic biomass processing facility; processing a first amount of the biomass to produce ethanol; collecting by-product materials from the processing of the biomass; processing the by-product materials to form a burnable fuel material; and burning the burnable fuel material on-site at the lignocellulosic biomass processing facility to produce energy. - View Dependent Claims (21)
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Specification