US 9,809,520 B2
Butanol purification
Cecilia Cheng, San Diego, CA (US); Ian David Dobson, London (GB); Andrew John Hogben, Leeds (GB); Andrew Richard Lucy, East Yorkshire (GB); John Glenn Sunley, East Yorkshire (GB); and Leslie William Bolton, Hampshire (GB)
Assigned to Butamax Advanced Biofuels LLC, Wilmington, DE (US)
Appl. No. 14/416,510
Filed by Butamax Advanced Biofuels LLC, Wilmington, DE (US)
PCT Filed Jul. 26, 2013, PCT No. PCT/US2013/052213
§ 371(c)(1), (2) Date Jan. 22, 2015,
PCT Pub. No. WO2014/018837, PCT Pub. Date Jan. 30, 2014.
Claims priority of provisional application 61/676,005, filed on Jul. 26, 2012.
Prior Publication US 2015/0225324 A1, Aug. 13, 2015
Int. Cl. C07C 29/88 (2006.01); C10L 1/18 (2006.01); C07C 29/80 (2006.01); C07C 29/76 (2006.01); C10L 1/02 (2006.01); C10L 1/182 (2006.01); C10L 1/14 (2006.01); C10L 1/185 (2006.01); C10L 1/188 (2006.01)
CPC C07C 29/88 (2013.01) [C07C 29/76 (2013.01); C07C 29/80 (2013.01); C10L 1/02 (2013.01); C10L 1/023 (2013.01); C10L 1/026 (2013.01); C10L 1/18 (2013.01); C10L 1/1824 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01); C10G 2400/08 (2013.01); C10L 1/14 (2013.01); C10L 1/1857 (2013.01); C10L 1/1881 (2013.01); C10L 2200/043 (2013.01); C10L 2200/0423 (2013.01); C10L 2200/0446 (2013.01); C10L 2200/0469 (2013.01); C10L 2270/023 (2013.01); C10L 2270/026 (2013.01); C10L 2270/04 (2013.01); C10L 2290/26 (2013.01); C10L 2290/54 (2013.01); C10L 2290/543 (2013.01)] 10 Claims
 
1. A method for removing isobutyric acid from a butanol based composition, the method comprising:
(a) providing a butanol based composition comprising isobutyric acid;
(b) contacting the butanol based composition with an excess level of a base;
(c) passing the composition through a filtration system; and
(d) passing the filtered composition through a distillation system.