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EP 2 969 975 A1

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(43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 14714041.2 (22) Date of filing: 07.03.2014

(51) International Patent Classification (IPC):  C02F 1/74(2006.01) C02F 1/72(2006.01) C02F 1/02(2006.01) C02F 11/08(2006.01) C02F 1/66(2006.01) (86) International application number: PCT/US2014/021475 (87) International publication number: WO 2014/149908 (25.09.2014 Gazette 2014/39)

(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 Designated Extension States: BA ME (30) Priority: 15.03.2013 US 201313840114 (71) Applicant: Siemens Energy, Inc. Orlando, FL 32826-2399 (US)	(72) Inventors: FELCH, Chad L. Kronenwetter, Wisconsin 54455 (US) KUMFER, Bryan J. Ringle, Wisconsin 54471 (US) (74) Representative: Isarpatent  Patentanwälte Behnisch Barth Charles Hassa Peckmann & Partner mbB Friedrichstrasse 31 80801 München 80801 München (DE)