Allen V. Forster - Midland MI Lyle E. Martz - Midland MI Douglas E. Leng - Midland MI
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
C01B 708 C13K 104
US Classification:
423488
Abstract:
The crude product obtained from the acid hydrolysis of cellulose, the product comprising concentrated hydrochloric acid and the various sugars obtained from the acid hydrolysis of cellulose, is separated into a first fraction comprising concentrated hydrochloric acid and a second fraction comprising the sugars by a process comprising: (1) contacting the crude product with an organic solvent consisting essentially of at least one C. sub. 5 -C. sub. 9 alcohol such that the organic solvent is enriched with the concentrated hydrochloric acid, (2) separating the enriched organic solvent from the concentrated hydrochloric acid depleted crude product, and (3) recovering the concentrated hydrochloric acid from the enriched organic solvent.
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