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Process for the production of alcohols

  • US 9,217,184 B2
  • Filed: 04/20/2010
  • Issued: 12/22/2015
  • Est. Priority Date: 05/07/2009
  • Status: Active Grant
First Claim
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1. A process for alcohol production from a cellulosic material or for the production of an oligosaccharide-containing residue from a cellulosic material comprising the steps of subjecting a said cellulosic material to acid hydrolysis to yield an aqueous hydrolysate, introducing said hydrolysate into a separator at a hydrolysate inlet, said separator having at least two sections;

  • introducing an extraction solvent into at least two separator sections at at least two extraction solvent inlets, removing a residue containing oligosaccharides from said separator at a residue discharge outlet, and removing acid-containing extraction solvent from said separator at an extraction solvent discharge outlet, wherein removal of said extraction solvent from said separator through said discharge outlet occurs downstream of at least one said extraction solvent inlet and upstream of at least one other said extraction solvent inlet.

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