(19)

(11)

EP 2 723 833 A1

(12)

(43) Date of publication: 30.04.2014 Bulletin 2014/18 (21) Application number: 12803300.8 (22) Date of filing: 23.06.2012

(51) International Patent Classification (IPC):  C10L 1/00(2006.01) (86) International application number: PCT/US2012/043906 (87) International publication number: WO 2012/178131 (27.12.2012 Gazette 2012/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 23.06.2011 US 201161500250 P (71) Applicant: Foster Wheeler USA Corporation Houston, TX 77079 (US)	(72) Inventors: ELLIOTT, John, Daniel Katy, TX 77494-8246 (US) WEDLAKE, David, Allan Houston, TX 77025 (US) (74) Representative: Gille Hrabal  Brucknerstrasse 20 40593 Düsseldorf 40593 Düsseldorf (DE)