公开(公告)号：PL3535523T3

公开(公告)日：2021-12-06

申请号：PL16920727

申请日：2016-11-01

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA

IPC: F23C10/26 ,  F22B31/00 ,  F22B37/10 ,  F23C10/06

公开(公告)号：FI20176134A1

公开(公告)日：2019-06-20

申请号：FI20176134

申请日：2017-12-19

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA ,  HEINO TERO

IPC: F23C10/32 ,  F22B31/00 ,  F23C10/06 ,  F23C10/26

Abstract: A circulating fluidized bed boiler (1), comprising a furnace (50), a loopseal (5), and a loopseal heat exchanger (10) arranged in the loopseal (5). The loopseal heat exchanger (10) comprises at least an inlet chamber (100), a bypass chamber (200), and a first heat exchange chamber (310), heat exchanger pipes (810) arranged in the first heat exchange chamber (310), and a primary particle outlet (610) for letting out bed material from the first heat exchange chamber (310). The primary particle outlet (610) has at least a first part (611) and a second part (612) separated from each other by a barrier element (401) in such a way that the first part (611) of the primary particle outlet (610) has a first height (h1) and a first width (w1), wherein a ratio (h1/w1) of the first height (h1) to the first width (w1) is less than 0.5 or more than 2. Use of the circulating fluidized bed boiler (1) such that fluidizing gas and bed material are let out from the first heat exchange chamber (310) via the primary particle outlet (610).

公开(公告)号：CA3042146A1

公开(公告)日：2018-05-11

申请号：CA3042146

申请日：2016-11-01

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA

IPC: F23C10/26 ,  F22B31/00 ,  F22B37/10 ,  F23C10/06

Abstract: The invention relates to a circulating fluidized bed boiler (1). The circulating fluidized bed boiler (1) comprises a furnace (50), a loopseal (5), and a loopseal heat exchanger (10) arranged in the loopseal (5). The loopseal heat exchanger (10) comprises walls (500, 505, 507, 510, 520, 530, 540, 550, 60) limiting an interior (11) of the loopseal heat exchanger (10), a first particle outlet (590) for letting out particulate material from the loopseal heat exchanger (10), an inlet (31) for receiving bed material, heat exchanger tubes (810, 820, 830) arranged in the interior (11) of the loopseal heat exchanger (10), and a first ash removal channel (211, 421) configured to let out ash from the loopseal heat exchanger (10). An ash cooler (600) is configured to receive ash from the first ash removal channel (211, 421). In the loopseal heat exchanger (1) the first ash removal channel (211, 421) is arranged at a lower level than the first particle outlet (590).

公开(公告)号：FI20215411A1

公开(公告)日：2022-06-15

申请号：FI20215411

申请日：2021-04-07

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA

IPC: F23C10/26 ,  F22B31/00 ,  F22B37/10 ,  F23C10/06 ,  F28D13/00

Abstract: A heat exchanger (10) suitable for recovering heat from bed material of a fluidized bed boiler (1). The heat exchanger (10) comprises first and second heat exchanger tubes (810, 820) and first and second feeding chambers (310, 320) configured to supply bed material to the first and second heat exchanger tubes (810, 820), respectively. The first heat exchanger tubes (810) are arranged on a first side of a plane (P) that intersects the first feeding chamber (310) and the second heat exchanger tubes (820) are arranged on a second side of the plane (P). The first feeding chamber (310) is configured to supply bed material to the second feeding chamber (320).

公开(公告)号：FI129639B

公开(公告)日：2022-06-15

申请号：FI20215411

申请日：2021-04-07

Applicant: VALMET TECHNOLOGIES OY

Inventor： LEHTONEN PEKKA

IPC: F23C10/26 ,  F22B31/00 ,  F22B37/10 ,  F23C10/06 ,  F28D13/00

Abstract: A heat exchanger (10) suitable for recovering heat from bed material of a fluidized bed boiler (1). The heat exchanger (10) comprises first and second heat exchanger tubes (810, 820) and first and second feeding chambers (310, 320) configured to supply bed material to the first and second heat exchanger tubes (810, 820), respectively. The first heat exchanger tubes (810) are arranged on a first side of a plane (P) that intersects the first feeding chamber (310) and the second heat exchanger tubes (820) are arranged on a second side of the plane (P). The first feeding chamber (310) is configured to supply bed material to the second feeding chamber (320).