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FI94170B - Fluidised bed boiler provided with internal circulation and method for the control thereof - Google Patents

Fluidised bed boiler provided with internal circulation and method for the control thereof

Info

Publication number
FI94170B
FI94170B FI896301A FI896301A FI94170B FI 94170 B FI94170 B FI 94170B FI 896301 A FI896301 A FI 896301A FI 896301 A FI896301 A FI 896301A FI 94170 B FI94170 B FI 94170B
Authority
FI
Finland
Prior art keywords
fluidised bed
thermal energy
diffusion plate
injected
air
Prior art date
Application number
FI896301A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI94170C (en
FI896301A0 (en
Inventor
Takahiro Ohshita
Tsutomu Higo
Shigeru Kosugi
Naoki Inumaru
Hajime Kawaguchi
Original Assignee
Ebara Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Publication of FI896301A0 publication Critical patent/FI896301A0/en
Application granted granted Critical
Publication of FI94170B publication Critical patent/FI94170B/en
Publication of FI94170C publication Critical patent/FI94170C/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/005—Fluidised bed combustion apparatus comprising two or more beds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F22B31/0092—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed with a fluidized heat exchange bed and a fluidized combustion bed separated by a partition, the bed particles circulating around or through that partition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/06—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/12—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated exclusively within the combustion zone
    • F23C10/14—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated exclusively within the combustion zone the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

The present invention relates to a boiler with fluidised bed and of the internal recirculation type, comprising: a primary combustion chamber with fluidised bed and constructed from an air diffusion plate and an inclined intermediate wall, which is arranged above that section of the diffusion plate, in which the mass flow of the air injected from the diffusion plate is greater than what is the case from the second section to merge with the upward flowing fluidisation air, which is injected from this part, and to divert the flow towards the action above the diffusion plate, in which the mass flow of injected gas is less; and a thermal energy recovery chamber, which is formed between the inclined intermediate wall and the side wall of the combustion furnace; the inclined intermediate wall being inclined at 10 to 60 degrees in relation to the horizontal plane and arranged so that its projection in the horizontal direction is 1/6 - 1/2 of the horizontal length of the bottom of the combustion furnace, and a method for controlling the abovementioned fluidised bed boiler in respect of the amount of thermal energy utilised from the thermal energy recovery chamber, by regulating the quantity of injected air from the diffuser in the thermal energy extraction chamber on the basis of requirements from the consumer utilising the thermal energy extracted, the quantity of fuel fed into the primary fluidised bed combustion chamber being controlled on the basis of the temperature in the primary fluidised bed combustion chamber. <IMAGE>
FI896301A 1987-07-20 1989-12-28 Fluidized bed boiler with internal circulation and method for controlling this FI94170C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8700530 1987-07-20
PCT/JP1987/000530 WO1989000659A1 (en) 1987-07-20 1987-07-20 Internal circulation type fluidized bed boiler and method of controlling same

Publications (3)

Publication Number Publication Date
FI896301A0 FI896301A0 (en) 1989-12-28
FI94170B true FI94170B (en) 1995-04-13
FI94170C FI94170C (en) 1995-07-25

Family

ID=13902775

Family Applications (1)

Application Number Title Priority Date Filing Date
FI896301A FI94170C (en) 1987-07-20 1989-12-28 Fluidized bed boiler with internal circulation and method for controlling this

Country Status (12)

Country Link
EP (1) EP0369004B1 (en)
KR (1) KR950007013B1 (en)
AT (1) ATE85682T1 (en)
AU (1) AU609731B2 (en)
BR (1) BR8707989A (en)
CA (1) CA1316413C (en)
DE (1) DE3784174T2 (en)
DK (1) DK166694B1 (en)
FI (1) FI94170C (en)
NO (1) NO168912C (en)
RU (1) RU2059150C1 (en)
WO (1) WO1989000659A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0629652B2 (en) * 1987-07-13 1994-04-20 株式会社荏原製作所 Combustion control device in fluidized bed boiler
US5054436A (en) * 1990-06-12 1991-10-08 Foster Wheeler Energy Corporation Fluidized bed combustion system and process for operating same
DE4029065A1 (en) * 1990-09-13 1992-03-19 Babcock Werke Ag Fluidized bed firing with a stationary fluidized bed
CA2116745C (en) * 1993-03-03 2007-05-15 Shuichi Nagato Pressurized internal circulating fluidized-bed boiler
US5401130A (en) * 1993-12-23 1995-03-28 Combustion Engineering, Inc. Internal circulation fluidized bed (ICFB) combustion system and method of operation thereof
EP0722067A3 (en) * 1995-01-12 1998-02-04 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Heat recovery apparatus by fluidized bed
TW270970B (en) * 1995-04-26 1996-02-21 Ehara Seisakusho Kk Fluidized bed combustion device
RU2229073C2 (en) * 1997-11-04 2004-05-20 Ибара Корпорейшн Fluidized-bed combustion and gasification furnace
RU2168668C1 (en) * 1999-12-17 2001-06-10 Государственный научный центр лесопромышленного комплекса Gas generator boiler plant
CN101225960B (en) * 2008-01-30 2010-06-09 重庆三峰卡万塔环境产业有限公司 Fire box of inverse push type destructor
US8434430B2 (en) * 2009-09-30 2013-05-07 Babcock & Wilcox Power Generation Group, Inc. In-bed solids control valve
RU2552009C1 (en) * 2013-12-30 2015-06-10 Евгений Михайлович Пузырёв Mechanised grate-fired furnace
RU2591070C2 (en) * 2014-07-30 2016-07-10 Евгений Михайлович Пузырёв Solid-fuel boiler with vortex furnace

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1448196A (en) * 1972-10-20 1976-09-02 Sprocket Properties Ltd Fluidised bed incinerators
GB1475992A (en) * 1974-04-11 1977-06-10 Fluidfire Dev Apparatus in which combustion takes place in a fludised bed
GB1604314A (en) * 1978-05-31 1981-12-09 Appa Thermal Exchanges Ltd Fluidised bed combusters
US4301771A (en) * 1980-07-02 1981-11-24 Dorr-Oliver Incorporated Fluidized bed heat exchanger with water cooled air distributor and dust hopper
US4419330A (en) * 1981-01-27 1983-12-06 Ebara Corporation Thermal reactor of fluidizing bed type
JPS57124608A (en) * 1981-01-27 1982-08-03 Ebara Corp Fluidized bed type heat-reactive furnace
CA1285375C (en) * 1986-01-21 1991-07-02 Takahiro Ohshita Thermal reactor

Also Published As

Publication number Publication date
RU2059150C1 (en) 1996-04-27
DK128289A (en) 1989-05-11
CA1316413C (en) 1993-04-20
NO891168L (en) 1989-04-06
FI94170C (en) 1995-07-25
KR950007013B1 (en) 1995-06-26
EP0369004A1 (en) 1990-05-23
EP0369004B1 (en) 1993-02-10
BR8707989A (en) 1990-05-22
NO891168D0 (en) 1989-03-17
NO168912B (en) 1992-01-06
KR890701950A (en) 1989-12-22
AU609731B2 (en) 1991-05-09
DE3784174D1 (en) 1993-03-25
FI896301A0 (en) 1989-12-28
DE3784174T2 (en) 1993-09-02
DK166694B1 (en) 1993-06-28
AU7708887A (en) 1989-02-13
EP0369004A4 (en) 1990-10-24
NO168912C (en) 1992-04-15
ATE85682T1 (en) 1993-02-15
DK128289D0 (en) 1989-03-16
WO1989000659A1 (en) 1989-01-26

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Legal Events

Date Code Title Description
BB Publication of examined application
FG Patent granted

Owner name: EBARA CORPORATION

MA Patent expired