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US 8,558,037 B2Granted
Method of producing butanol
AssigneeToray Industries, Inc.
InventorsIzumi Morita, Masateru Ito, Hideki Sawai, Shinichi Minegishi, Katsushige Yamada, Kenji Kawamura
Life of this patent
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Abstract
A method of producing butanol, which has a step of removing impurities contained in a butanol-containing solution, is provided. In the method, a butanol-containing solution is filtered through a nanofiltration membrane. Then the butanol-containing solution is collected from the permeate flow of the nanofiltration membrane.
Claims7
A method of producing butanol, said method comprising the steps of:
- filtering a butanol-containing solution through a nanofiltration membrane;
- and
- collecting butanol-containing solution from the permeate flow of said nanofiltration membrane.
Dependencies are inferred from the claim text.