Apparatus and method for hydrolysis of lignocellulosic materials
AssigneeValmet Corporation
InventorGöran WALLIN
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Abstract
The invention relates to a method for extraction of saccharides from a lignocellulose containing material and comprises the steps of mixing the lignocellulose containing material with an acidic water solution to create a slurry having a pH value in the interval of 0-4; controlling the water content of the slurry to obtain a specific dry solid content of more than 30%; and introducing the slurry into an apparatus and performing an acid hydrolysis of the slurry in the apparatus, wherein at least parts of the apparatus that come into contact with the slurry are made of a material that comprises iron in an amount of at least 50% by weight and nickel in an amount of at least 1.5% by weight. The invention relates also to an apparatus for performing said method.
Claims6
A method for extraction of saccharides from a lignocellulose-containing material, comprising the steps of:
- mixing the lignocellulose-containing material with an acidic water solution to create a slurry having a pH value in the interval of 0-4;
- controlling the water content of the slurry to obtain a specific dry solid content of the slurry;
- and
- introducing the slurry into an apparatus and performing an acid hydrolysis of the slurry in the apparatus,
- wherein the specific dry solid content of the slurry is more than 30% and wherein at least parts of the apparatus that come into contact with the slurry are made of a material that comprises iron in an amount of at least 50% by weight and nickel in an amount of at least 1.5% by weight.
An acid hydrolysis apparatus for extraction of saccharides from a lignocellulose-containing material, said apparatus being configured for acid hydrolysis of a slurry, which is a mixture of the lignocellulosic material and an acidic water solution and which has a pH value in the interval of 0-4 and a dry solid content of at least 30%, wherein at least parts of the apparatus that come into contact with the slurry comprise iron in an amount of at least 50% by weight and nickel in an amount of at least 1.5% by weight.
Dependencies are inferred from the claim text.