PROCESS TO OBTAIN FULLY OXIDIZED WHITE LIQUOR FOR USE IN THE FIBERLINE OF A KRAFT PULP PROCESS
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United States of America Patent
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Issued Date -
Sep 12, 2024
app pub date -
Mar 6, 2024
filing date -
Mar 6, 2023
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Abstract
The present application relates to a process to obtain fully oxidized white liquor from white liquor used in a Kraft pulp process. Said fully oxidized white liquor is suitable to be used in alkaline steps of certain stages of the Kraft pulp process fiberline in order to partly or totally substitute the purchased sodium hydroxide used in those stages. The presently disclosed process also allows to purge non-process elements (NPE's) by purging alkaline wash filtrates to a wastewater treatment plant.
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