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Title: System and method for conditioning a hardwood pulp liquid hydrolysate

A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1187944
Assignee:
Red Shield Acquisition, LLC (Old Town, ME) DOEEE
Patent Number(s):
9,068,291
Application Number:
14/079,049
Contract Number:
EE0003364
Resource Relation:
Patent File Date: 2013 Nov 13
Research Org:
Red Shield Acquisition, LLC, Old Town, ME (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 42 ENGINEERING

Other works cited in this record:

Fermentation of lignocellulosic hydrolysates. I: inhibition and detoxification
journal, August 2000

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