(19)

(11)

EP 2 504 080 A1

(12)

(43) Date of publication: 03.10.2012 Bulletin 2012/40 (21) Application number: 10782281.9 (22) Date of filing: 24.11.2010

(51) International Patent Classification (IPC):  B01D 61/00(2006.01) F03G 7/00(2006.01) (86) International application number: PCT/EP2010/068121 (87) International publication number: WO 2011/064252 (03.06.2011 Gazette 2011/22)

(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: 24.11.2009 EP 09176886 (71) Applicant: Statkraft Development AS 0216 Oslo (NO)	(72) Inventors: SKILHAGEN, Stein Erik N-1358 Jar (NO) BREKKE, Geir Magnar N-0493 Oslo (NO) (74) Representative: Plougmann & Vingtoft A/S  Rued Langgaards Vej 8 2300 Copenhagen S 2300 Copenhagen S (DK)