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System and method for extraction of chemicals from lignocellulosic materials

  • US 9,365,525 B2
  • Filed: 02/11/2013
  • Issued: 06/14/2016
  • Est. Priority Date: 02/11/2013
  • Status: Active Grant
First Claim
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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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