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公开(公告)号：WO2021255613A1
公开(公告)日：2021-12-23
申请号：PCT/IB2021/055200
申请日：2021-06-14
Applicant: STORA ENSO OYJ
Inventor： KAVAKKA, Jari , EHN, Christian
Abstract: The present invention is directed to an improved method for recirculation of formic acid in a process for preparing dissolving pulp, in which sugars are extracted from pre-hydrolysis liquor.
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