Method for producing solid lignin

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United States of America Patent

PATENT NO 10239904
APP PUB NO 20170101430A1
SERIAL NO

15292079

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Abstract

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Lignin-rich starting material is suspended in a first medium, which is acidic and aqueous, to form a aqueous acidic suspension, which is heated and allowed to form two continuous phases, a thermoplastic lignin phase and an aqueous phase. The thermoplastic lignin phase is separated from the aqueous phase and passed through a shape giving process into a second medium which is at a temperature lower than that of the thermoplastic lignin phase and in which the thermoplastic lignin phase is essentially insoluble. Solid lignin formed in the second medium is recovered.

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Patent Owner(s)

  • VALMET TECHNOLOGIES OY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Enqvist, Eric Helsinki, FI 3 1
Littorin, Anders Hisings Kärra, SE 3 7
Tarvo, Ville Espoo, FI 2 1
Tikka, Panu Espoo, FI 16 119
Wallmo, Henrik Alingsås, SE 7 25
Wittmann, Tobias Berlin, DE 18 78

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