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US 2021/0363309 A1Published application
Method of producing lignin with reduced amount of odorous substances
AssigneeValmet Corporation
InventorsAnders UHLIN, Lars-Erik ÅKERLUND, Anders LITTORIN, Henrik WALLMO
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Abstract
The present invention relates to a method of producing lignin with reduced amount of guaiacoland etylguaiacol in order to reduce the content of odorous substances by subjecting the ligninto a heating processing order to remove guaiacol.
Claims15
Method for treatment of lignin in order to reduce the amount of guaiacol and etylguaiacol in the lignin to provide a lignin with less odour in which said lignin is heated to a temperature above 60 degrees Celsius
- characterized in that
- said lignin being subjected to the heat treatment has a dry content of at least 50% w/w.
Dependencies are inferred from the claim text.