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(11)

EP 4 013 996 A1

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(43) Date of publication: 22.06.2022 Bulletin 2022/25 (21) Application number: 20853481.8 (22) Date of filing: 14.08.2020

(51) International Patent Classification (IPC):  F23D 14/22(2006.01) F23G 7/08(2006.01) F23D 14/64(2006.01) F23L 17/16(2006.01) (52) Cooperative Patent Classification (CPC): F23G 7/085 (86) International application number: PCT/US2020/046276 (87) International publication number: WO 2021/030649 (18.02.2021 Gazette 2021/07)

(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: 14.08.2019 US 201916540355 (71) Applicant: Zeeco Inc. Broken Arrow, OK 74014 (US)	(72) Inventors: ZINK, Darton J. Tulsa, OK 74114 (US) ISAACS, Rex K. Collinsville, OK 74021 (US) PETERSEN, John Pawnee, OK 74058 (US) SMITH, Scot Tulsa, OK 74136 (US) LITTLE, Cody Coweta, OK 74429 (US) KIRK, Tim Morris, OK 74445 (US) (74) Representative: D Young & Co LLP  120 Holborn London EC1N 2DY London EC1N 2DY (GB)