(19)
(11) EP 4 146 861 A1

(12)

(43) Date of publication:
15.03.2023 Bulletin 2023/11

(21) Application number: 21800699.7

(22) Date of filing: 29.03.2021
(51) International Patent Classification (IPC): 
D21B 1/14(2006.01)
(52) Cooperative Patent Classification (CPC):
D21B 1/14; D21D 1/30
(86) International application number:
PCT/SE2021/050276
(87) International publication number:
WO 2021/225491 (11.11.2021 Gazette 2021/45)
(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: 07.05.2020 SE 2050527

(71) Applicant: VALMET AB
85194 Sundsvall (SE)

(72) Inventors:
  • LINDBLOM, Thommy
    129 54 Hägersten (SE)
  • AHLGREN, Örjan
    852 36 Sundsvall (SE)
  • LAREDIUS, Jan
    852 39 Sundsvall (SE)

   


(54) A SYSTEM AND METHOD FOR DEFIBRATING WOOD CHIPS, AND A RETURN STEAM PIPE