(19)

(11)

EP 2 147 256 A1

(12)

(43) Date of publication: 27.01.2010 Bulletin 2010/04 (21) Application number: 08750236.5 (22) Date of filing: 09.05.2008

(51) International Patent Classification (IPC):  F23R 3/14(2006.01) F23C 7/00(2006.01) F23R 3/34(2006.01) F23D 11/38(2006.01) (86) International application number: PCT/EP2008/055762 (87) International publication number: WO 2008/141955 (27.11.2008 Gazette 2008/48)

(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: 18.05.2007 EP 07009960 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventors: HEADLAND, Paul Lincoln LN1 1NA (GB) NODEN, Richard Maltby, Cleveland TS8 0BB (GB)