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US 12,479,876 B2Granted
Method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing material
AssigneeAndritz Inc.
InventorsOuti Poukka, Katja Salmenkivi, Lauri Pehu-Lehtonen, Pauliina Sjögård, Tarja Tamminen, Tiina Liitiä, Taina Ohra-aho
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Abstract
According to an example aspect of the present invention, there is provided a method of removing volatile compounds from a lignin-containing material, the method comprising: providing a material comprising lignin and volatile compounds; treating the material by a distillation method in order to vaporize at least a part of the volatile compounds.
Claims18
A method of removing volatile compounds from a lignin-containing material, the method comprising:
- providing the lignin-containing material comprising lignin and the volatile compounds;
- treating the material by a distillation method in order to vaporize at least a part of the volatile compounds,
- wherein said treating step comprises steam stripping the lignin-containing material at a pressure not larger than 1.5 bar.
Dependencies are inferred from the claim text.