Butamax Advanced Biofuels LLC

Honeywell International Inc.

Steven Christopher Barr

Joseph J Zaher

Robert W Sylvester

Aidan Hurley

Baihua Wu

Kevin P Keller

Daniel F Smith

The present invention relates to processes to remove butanol and other product alcohols from a fermentation broth employing vacuum vaporization.

Process to remove product alcohols from fermentation broth

The present invention relates to processes for recovering butanol produced in a fermentative process using, for example, an ethanol production plant which has been reversibly-retrofitted for butanol production, that is, the ethanol production plant may be converted for butanol production, but can also revert to an ethanol production. The present invention also relates to processes for recovering butanol produced in a fermentative process in a butanol production plant that may be converted to ethanol production plant.

Processes and systems for alcohol production and recovery

An O-substituted hydroxylamine having the following general formula:R&#x2014;CHX&#x2014;O&#x2014;NHwherein X is hydrogen or an alkyl; and Ris an unsubstituted or substituted phenyl, thienyl, furanyl, pyrrolyl or &#x2014;CR&#x2550;CRR; wherein R, Rand Rare hydrogen, halogen or alkyl. The O-substituted hydroxylamine exhibits at least one property selected from the group consisting of: essentially free of hydroxylamine; essentially free of any solvent; a water content of between about 0% to 90% by weight; and a high strength (as measured by mole of the O-substituted hydroxylamine per gram of sample) of between about 0.5 to 3.3-fold as much as a 40% O-substituted hydroxylamine salt solution, by weight. The O-substituted hydroxylamine further comprising at least one additional property selected from the group consisting of: a purity of between about 98% to 100%, based on gas chromatographic area; and a purity drop of less than about 1.2% after 78 days at 40&#xb0; C. when the O-substituted hydroxylamine has a concentration of about 85% in water, based on gas chromatographic area. The O-substituted hydroxylamine is at least one isomer selected from the group consisting of cis, trans and a mixture thereof. The O-substituted hydroxylamine may also be reacidified to an O-substituted hydroxylamine salt free of hydroxylamine.

O-(3-chloropropenyl) hydroxylamine free base

Growing community of inventors

West Chester, PA, United States of America

Steven Christopher Barr