公开(公告)号：FI131442B1

公开(公告)日：2025-04-23

申请号：FI20235246

申请日：2023-02-28

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA ,  LUOMAHARJU TERO ,  YLI-HEMMINKI PASI

IPC: F28D13/00 ,  F22B31/00 ,  F27B15/02

Abstract: A wall (200) for a fluidized bed boiler (300). The wall (200) comprises a first heat exchanger pipe (110) comprising a first primary portion (111) and a first secondary portion (112), and a second heat exchanger pipe (120) comprising a second primary portion (121) and a second secondary portion (122). A first gap (221) is arranged between the first secondary portion (112) and the second secondary portion (122), and at least a part of the first secondary portion (112) and at least a part of the second secondary portion (122) extend straight, in parallel, and within an imaginable plane (P). The wall (200) is configured such that particulate material is able to propagate through the first gap (221) from a first side (S1) of the plane (P) to the opposite second side (S2) of the plane (P). The wall (200) comprises a refractory (230) arranged on at least one side of a part of the first secondary portion (112) and a part of the second secondary portion (122). A fluidized bed boiler comprising the wall (200).