The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2022
Filed:
Jan. 31, 2019
Avantium Knowledge Centre B.v., Amsterdam, NL;
Martijn Kersbulck, Amsterdam, NL;
Benjamin McKay, Amsterdam, NL;
Gerardus Johannes Maria Gruter, Amsterdam, NL;
Avantium Knowledge Centre B.V., Amsterdam, NL;
Abstract
A process for obtaining aqueous hydrolysates from solid material containing hemicellulose, cellulose and lignin. The process comprises hydrolysing at least part of the hemicellulose of the solid material with a first aqueous hydrochloric acid solution at a concentration of 15-40 wt %, yielding a remaining solid material and an aqueous first hydrolysate product solution. The aqueous first hydrolysate is displaced from the remaining solid material with a non-aqueous displacement fluid having a density of less than 1000 kg/m. Thereafter, at least part of the cellulose of the remaining solid material is hydrolysed with a second aqueous hydrochloric acid solution at a concentration of 40-51 wt %, yielding a residue and an aqueous second hydrolysate product solution. This process is carried out in vertical cylindrical reactors, and the displacement fluid is supplied to a reactor in a downward fashion.