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(11)

EP 3 948 076 A1

(12)

(43) Date of publication: 09.02.2022 Bulletin 2022/06 (21) Application number: 20713350.5 (22) Date of filing: 17.03.2020

(51) International Patent Classification (IPC):  F23C 5/14(2006.01) F23D 11/36(2006.01) F23D 14/46(2006.01) F23D 11/10(2006.01) F23D 14/22(2006.01) (52) Cooperative Patent Classification (CPC): F23D 11/108; F23D 14/46; F23D 11/36; F23D 11/106; F23C 2900/07021; F23D 14/22; F23C 5/14 (86) International application number: PCT/FI2020/050164 (87) International publication number: WO 2020/193849 (01.10.2020 Gazette 2020/40)

(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 Designated Validation States: KH MA MD TN (30) Priority: 26.03.2019 FI 20195230 (71) Applicant: Valmet Technologies Oy 02150 Espoo (FI)	(72) Inventor: TAINIO, Henri 36240 KANGASALA (FI) (74) Representative: Berggren Oy  P.O. Box 16 Eteläinen Rautatiekatu 10A 00101 Helsinki 00101 Helsinki (FI)