Method for scale removal during a lignocellulosic conversion process
US8882925B2 · kind B2 · utility
0Cited by
8References
19Claims
0Family size
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Key dates
| Filing date | Feb 8, 2011 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Aug 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for processing of a lignocellulosic feedstock is provided comprising exposing lignocellulosic feedstock to acid in a reactor to hydrolyze at least hemicellulose present in said lignocellulosic feedstock, wherein during said exposing, a scale deposit comprising lignin forms on the inner surface of said reactor; and treating the scale deposit with an alkali solution at a temperature between about 140° C. and about 250° C. so as to remove scale. Also provided is a method for reducing scale deposit that forms on process equipment during a stage of reacting a lignocellulosic feedstock with acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.