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EP 4 770 792 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24765320.7 (22) Date of filing: 23.08.2024

(51) International Patent Classification (IPC):  B01J 6/00(2006.01) B01J 8/00(2006.01) B01J 8/18(2006.01) B01J 19/10(2006.01) C01B 3/50(2026.01) B01D 71/02(2006.01) B01J 8/08(2006.01) B01J 8/40(2006.01) B01J 19/24(2006.01) (52) Cooperative Patent Classification (CPC): B01J 6/008; B01J 8/009; C01B 3/503; B01J 8/087; B01J 8/1836; B01J 8/40; B01J 19/2475; B01J 19/10; C01B 2203/041; B01D 63/16; B01D 2315/04; B01D 71/0271; B01D 2325/10; B01D 2313/22; B01D 2311/103; B01D 2313/221; B01D 2321/2058; B01D 2321/2075 (86) International application number: PCT/EP2024/025255 (87) International publication number: WO 2025/045391 (06.03.2025 Gazette 2025/10)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 30.08.2023 IT 202300017838 (71) Applicant: Nuovo Pignone Tecnologie - S.R.L. 50127 Florence (IT)	(72) Inventors: MANSOURI, Ali 50127 Florence (IT) AMIDEI, Simone 50127 Florence (IT) (74) Representative: Illingworth-Law, William Illingworth  Baker Hughes 245 Hammersmith Chalk Hill Road London W6 8DW London W6 8DW (GB)