(19)

(11)

EP 2 175 964 A1

(12)

(43) Date of publication: 21.04.2010 Bulletin 2010/16 (21) Application number: 08762496.1 (22) Date of filing: 26.06.2008

(51) International Patent Classification (IPC):  B01D 53/00(2006.01) F02C 3/00(2006.01) F01K 23/00(2006.01) (86) International application number: PCT/GB2008/002190 (87) International publication number: WO 2009/004307 (08.01.2009 Gazette 2009/02)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 04.07.2007 GB 0712929 15.01.2008 GB 0800641 (71) Applicant: Jacobs Engineering U.k. Limited Reading Berkshire RG6 1BL (GB)	(72) Inventors: GRIFFITHS, John Warlingham, Surrey CR6 9JD (GB) KARMARKAR, Mohan Purley, Surrey CR8 2EG (GB) (74) Representative: Marchant, Michael John  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow Strathclyde G5 8PL Glasgow Strathclyde G5 8PL (GB)