Process and systems for obtaining 1,4-butanediol from fermentation broths
AssigneeGenomatica, Inc.
InventorsSVB Janardhan GARIKIPATI, Michael JAPS, Ishmael M. SONICO
Life of this patent
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Abstract
A process of purifying 1,4-butanediol (1,4-BDO) from a fermentation broth including separating solid materials, salts and water, and subjecting the resulting material to a two, three or four column distillation system, that can include a wiped film evaporator to produce a purified 1,4-butanediol.
Claims14
1-33. (canceled)
A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.
A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone in a concentration of from 2.0 to 141.0 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.
A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone in a concentration, as converted into a nitrogen atom, of from 0.3 to 23.0 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran.
Dependencies are inferred from the claim text.