(19)

(11)

EP 3 894 042 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 20766021.8 (22) Date of filing: 18.02.2020

(51) International Patent Classification (IPC):  B01D 29/11(2006.01) E21B 43/08(2006.01) B01D 35/02(2006.01) (52) Cooperative Patent Classification (CPC): B01D 35/153; B01D 29/44; B01D 35/02 (86) International application number: PCT/RU2020/000076 (87) International publication number: WO 2020/180211 (10.09.2020 Gazette 2020/37)

(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: 05.03.2019 RU 2019106266 (71) Applicant: Yazykov, Andrey Yurievich Moscow 119619 (RU)	(72) Inventor: Yazykov, Andrey Yurievich Moscow 119619 (RU) (74) Representative: Jeck, Anton  Jeck, Fleck & Partner mbB Patentanwälte Klingengasse 2 71665 Vaihingen/Enz 71665 Vaihingen/Enz (DE)