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(11)

EP 4 466 494 A1

(12)

(43) Date of publication: 27.11.2024 Bulletin 2024/48 (21) Application number: 23701609.2 (22) Date of filing: 16.01.2023

(51) International Patent Classification (IPC):  F23D 14/12(2006.01) F23D 14/76(2006.01) F23D 14/82(2006.01) F23D 14/58(2006.01) F23D 14/78(2006.01) (52) Cooperative Patent Classification (CPC): F23D 14/125; F23D 14/586; F23D 14/76; F23D 14/78; F23D 14/82; F23D 2212/20; F23C 2900/9901 (86) International application number: PCT/IB2023/050372 (87) International publication number: WO 2023/139470 (27.07.2023 Gazette 2023/30)

(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: KH MA MD TN (30) Priority: 21.01.2022 US 202263301637 P (71) Applicant: Nova Chemicals (International) S.A. 1700 Fribourg (CH)	(72) Inventors: CLAVELLE, Eric Calgary, Alberta T2G 0M4 (CA) DE BOER, Murray Wyoming, Ontario N0N 1T0 (CA) BENUM, Leslie Red Deer, Alberta T4N 2B9 (CA) WAQUE, James Corunna, Ontario N0N 1G0 (CA) SCHMITT, David Sand Springs, Oklahoma 74063 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)