(19)

(11)

EP 3 914 870 A1

(12)

(43) Date of publication: 01.12.2021 Bulletin 2021/48 (21) Application number: 19912167.4 (22) Date of filing: 25.01.2019

(51) International Patent Classification (IPC):  F25J 3/04(2006.01) (52) Cooperative Patent Classification (CPC): F25J 1/001; F25J 1/0015; F25J 1/0017; F25J 1/002; F25J 1/0045; F25J 1/0201; F25J 1/0234; F25J 1/0251; F25J 1/0262; F25J 3/04084; F25J 3/0409; F25J 3/04096; F25J 3/04224; F25J 3/04478; F25J 3/04527; F25J 3/04563; F25J 3/04787; F25J 3/04824; F25J 2215/54; F25J 2235/42; F25J 2235/50; F25J 2235/58; F25J 2245/02; F25J 2245/42; F25J 2245/50; F25J 2245/58; F25J 2250/30; F25J 2250/40; F25J 2250/42; F25J 2250/50; F25J 2250/58; F25J 2260/02; F25J 2290/60; F25J 2290/62 (86) International application number: PCT/CN2019/073114 (87) International publication number: WO 2020/150988 (30.07.2020 Gazette 2020/31)

(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 (71) Applicant: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 75007 Paris (FR)	(72) Inventor: BRIGLIA, Alain Hangzhou, Zhejiang 310012 (CN) (74) Representative: Air Liquide  L'Air Liquide S.A. Direction de la Propriété Intellectuelle 75, Quai d'Orsay 75321 Paris Cedex 07 75321 Paris Cedex 07 (FR)