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公开(公告)号：EP0920552A1
公开(公告)日：1999-06-09
申请号：EP97935959.0
申请日：1997-08-20
Applicant: STFI
Inventor： NILVEBRANT, Nils-Olov , REIMANN, Anders , DE SOUSA, Filipe
Abstract: One or several oxalic acid or oxalate decomposing enzymes are used to lower the concentration of oxalic acid and/or oxalate precipitates in the production of pulp and paper. The method is particularly useful in processes using oxidative bleaching and in particular in processes where the process liquids are recirculated within the plant. Thus the forming of incrusts and sediments, comprising sparingly soluble oxalate compounds, is reduced or prevented.
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