EP1875130B1 - Double extension de paroi - Google Patents

Double extension de paroi Download PDF

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Publication number
EP1875130B1
EP1875130B1 EP06743846.5A EP06743846A EP1875130B1 EP 1875130 B1 EP1875130 B1 EP 1875130B1 EP 06743846 A EP06743846 A EP 06743846A EP 1875130 B1 EP1875130 B1 EP 1875130B1
Authority
EP
European Patent Office
Prior art keywords
fluidized bed
extension panels
bed reactor
tubes
firebox
Prior art date
Legal status (The legal status 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 status listed.)
Revoked
Application number
EP06743846.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1875130A1 (fr
Inventor
Jean-Xavier Morin
Daniel Baglione
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Technology GmbH
Original Assignee
General Electric Technology GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35429265&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1875130(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by General Electric Technology GmbH filed Critical General Electric Technology GmbH
Publication of EP1875130A1 publication Critical patent/EP1875130A1/fr
Application granted granted Critical
Publication of EP1875130B1 publication Critical patent/EP1875130B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/02—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/34—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
    • 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 of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized 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
    • F23C10/18—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls

Definitions

  • the present invention relates to fluidized bed reactors such as boiler fireplaces. These reactors comprise a focus generally consisting of membrane cased walls cooled by a coolant such as a water / steam mixture.
  • the section of the fireplace that can be rectangular is determined by the upward speed of the combustion fumes for its proper functioning.
  • the perimeter of the hearth being fixed, the flow of the coolant circulating in the tubes of the walls will be determined according to the diameter and the pitch chosen for said tubes.
  • the height of the hearth makes it possible to obtain the heat exchange surface of the four walls, however this height must be optimized in order to reduce height and therefore the cost of the installation but also so that the residence time required for Chemical reactions between the particles can occur within the home.
  • the section of the hearth gives a perimeter that may be insufficient to install in the walls the parallel tubes necessary to circulate the flow of heat transfer fluid.
  • the need for heat exchange may require the installation of additional exchange surfaces in the fireplace.
  • Another solution could be to increase the height of the fireplace to increase the exchange surface of the walls without adding internal extensions but this solution is expensive because the entire height of the installation is increased.
  • the present invention proposes to solve at a lower cost and without increasing the height of the installation the problem of the insufficiency of the exchange surfaces in the hearth.
  • the fluidized bed reactor according to the invention is defined in claim 1.
  • the coolant fluid that circulates in the tubes of the walls and cased extensions balances the heat flow received from the fluidized bed circulating in the home.
  • the circulation is mono pass, that is to say that all the tubes of the hearth and extensions are traversed in parallel.
  • the single-pass circulation avoids long connecting pipes between the extension panels and the walls of the fireplace (in the upper part for the exit of the panels and in the lower part for the entrance of the walls of the fireplace). All that remains is that supply pipes at the bottom and clearance at the top for the panels and walls of the fireplace.
  • each extension panel only one face of each extension is heated by the fluidized bed circulating in the hearth, which allows a flow of the coolant reduced because the second side of each of the extension panels thus paired is not in contact with the ashes and hot gases constituting the fluidized bed circulating in the furnace which avoids heat transfer modes damaging to the mechanical strength of the tubes.
  • doubling the number of tubes of each extension panel increases the passage section of the heat transfer fluid that flows in these extensions relative to simple extensions and increases the exchange surface.
  • the extension panels are attached to the walls of the reactor. This makes it possible to improve the rigidity and to minimize the deformations of the panels which could give rise to erosions by solids descending in a layer along the walls.
  • the extension panels start from the top of the reactor and at most over a height equal to 75% of the height of the hearth. Because it is in the upper zone of the hearth that the temperature is the highest and that the risks of erosion are the weakest since the solids concentrations decrease according to the height and that the gaseous atmosphere in the upper part of the hearth is fully oxidizing.
  • the bottom of the hearth is in the form of split hearth said "pant leg”. This shape allows the introduction of combustion air in the central area of the fireplace to distribute the air throughout the entire section of the fireplace.
  • the coolant is in the liquid phase and / or gaseous depending on the thermal load of operation of the boiler.
  • the fluid is liquid in low charge and gaseous in high load.
  • the coolant is water.
  • the extension panels form enclosures having openings. These openings make it possible to avoid the rise in pressure inside the enclosure in the event of leakage of the coolant from the tubes.
  • the extension panels are placed at least partly in the dense layer of solids. Because it is in this area of high concentration of solids that heat exchange is the highest.
  • the tubes constituting the extension panels are of different dimensions from those of the wall tubes.
  • the pitch between two tubes constituting the extension panels is fixed. This simplifies the manufacture of the panels.
  • the pitch between two tubes constituting the extension panels is variable. This makes it possible to optimize the thermodynamic behavior of said panels and not to exceed the temperature thresholds of the metal.
  • the distance between two panels of twin extensions is equal to the pitch between two tubes of the fireplace screen wall. The manufacture of the assembly is thus simplified.
  • the tubes of the extension panels are traversed in heat transfer fluid in series with the peripheral walls. This choice depends on the steam cycles and the thermal powers to be exchanged in the extension panels.
  • the extension panels are arranged on partition walls that divide the fireplace. This makes it possible to increase the number of extension panels and thus to increase the number of exchange surfaces at a lower cost.
  • the partition walls start from the top of the reactor and at most over a height equal to 75% of the height of the hearth.
  • These partition double walls may be spaced apart or close type according to the access requirements for maintenance between the walls.
  • the Figures 1 to 4 represent a fluidized bed reactor 1 consisting of diaphragm walls 2 with membranes cooled by a coolant surrounding a furnace 10.
  • the walls 2 comprise cased extensions 3.
  • the wall 11 comprises openings 5 which communicate with the cyclones (not shown). These extensions can be arranged perpendicular to the wall 11 as on the figure 1 or parallel to the wall 11 as on the figure 2 or constitute partition walls 4 of the fireplace 10 as on the figure 3 where the focus 10 is divided into three and the figure 3a where the focus is divided in two. On the figure 4 the focus 10 is divided into 6.
  • FIG. 5 represent the different types of extension panels possible. This set of figures illustrates the variety of possible constructions which depends on the exchange surface requirements and the thermodynamic resistance criteria which themselves are a function of the conditions of the gaseous liquid or vapor water cycle.
  • Figures 5u to 5t have a single tube end to reduce the heat flow received by the tube and the end fin.
  • the figure 6 represents the detail of a partition wall 4 of close type on which panels of extensions 3 have been arranged.
  • FIGS 7 and 8 represent a partition wall 4a of spaced apart type on which panels of extensions 3 have been arranged.
  • figure 7 represents the detail of the wall 4a.
  • the extension panel 3 is fed by a distribution circuit 30, it is composed of tubes 31 which are held spaced by a notched vane sealing 32.
  • the fluid coolant flows in the tubes 31 of the inlet manifold 33 to the outlet manifold 34 (cf. figure 9 ).
  • the extension 3 represented in figure 10 is seen from above in section. It consists of tubes 31.
  • the double wall partition 4 can be arranged in different ways: either on the whole height as the figure 11a , only in the central part as in the figure 11b , or up to an intermediate height as on the figure 11c , from the ceiling to an intermediate height as in the figure 11 d or figure 12a .
  • the figure 14 represents the different possible inlet and outlet manifold arrangements for double partition walls with close-type walls ( Figures 14h to 141 ) or spaced (14a to 14g).
  • the choice of these different arrangements of collectors depends on the size of the partition walls and the optimization of the distribution of the coolant in these walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP06743846.5A 2005-04-26 2006-04-26 Double extension de paroi Revoked EP1875130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0551070A FR2884900B1 (fr) 2005-04-26 2005-04-26 Reacteur a lit fluidise avec double extension de paroi
PCT/FR2006/050389 WO2006114551A1 (fr) 2005-04-26 2006-04-26 Double extension de paroi

Publications (2)

Publication Number Publication Date
EP1875130A1 EP1875130A1 (fr) 2008-01-09
EP1875130B1 true EP1875130B1 (fr) 2016-08-31

Family

ID=35429265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06743846.5A Revoked EP1875130B1 (fr) 2005-04-26 2006-04-26 Double extension de paroi

Country Status (8)

Country Link
US (1) US9175846B2 (ko)
EP (1) EP1875130B1 (ko)
KR (1) KR100919754B1 (ko)
CN (1) CN101166933B (ko)
ES (1) ES2603405T3 (ko)
FR (1) FR2884900B1 (ko)
PL (1) PL1875130T3 (ko)
WO (1) WO2006114551A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532301C2 (sv) * 2008-04-23 2009-12-08 Metso Power Ab En ångpanna försedd med kyld anordning
SE533545C2 (sv) * 2009-04-24 2010-10-19 Metso Power Ab En panna försedd med kyld skärmvägg i rökgången
FI124376B (fi) * 2010-01-15 2014-07-31 Foster Wheeler Energia Oy Höyrykattila
WO2012021533A2 (en) * 2010-08-09 2012-02-16 Naranjo Aldozkar D Herrera Device for heating liquid and generating steam
CN102466223B (zh) * 2010-10-29 2014-08-20 中国科学院工程热物理研究所 一种循环流化床锅炉
PL2642199T3 (pl) * 2012-03-20 2017-11-30 General Electric Technology Gmbh Kocioł z cyrkulacyjnym złożem fluidalnym

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072535A (en) * 1931-11-21 1937-03-02 Gasoline Prod Co Inc Method of and radiant heat stills for distilling hydrocarbon oils
US3130714A (en) 1961-05-18 1964-04-28 Shell Oil Co Tube furnace
US5215042A (en) 1990-02-20 1993-06-01 Metallgesellschaft Aktiengesellschaft Fluidized bed reactor
US5678497A (en) 1996-04-30 1997-10-21 Foster Wheeler Energy International, Inc. Apparatus for distributing secondary air into a large scale circulating fluidized bed
US5707591A (en) 1993-11-10 1998-01-13 Gec Alsthom Stein Industrie Circulating fluidized bed reactor having extensions to its heat exchange area
EP0864834A1 (fr) * 1997-03-13 1998-09-16 GEC ALSTHOM Stein Industrie Echangeur à lit fluidisé dense destiné à être associé à un réacteur à lit fluidisé circulant
US5836257A (en) * 1996-12-03 1998-11-17 Mcdermott Technology, Inc. Circulating fluidized bed furnace/reactor with an integral secondary air plenum
EP1141626B1 (en) 1998-11-20 2004-04-14 Foster Wheeler Energia Oy Fluidized bed reactor
DE10254780A1 (de) 2002-11-22 2004-06-17 Alstom Power Boiler Gmbh Durchlaufdampferzeuger mit zirkulierender atmosphärischer Wirbelschichtfeuerung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1048832A (en) * 1963-02-14 1966-11-23 Davy & United Eng Co Ltd Fluidised bed containers
US4165717A (en) * 1975-09-05 1979-08-28 Metallgesellschaft Aktiengesellschaft Process for burning carbonaceous materials
DE2704975C2 (de) * 1977-02-07 1982-12-23 Wacker-Chemie GmbH, 8000 München Wärmeaustauschvorrichtung für Wirbelbettreaktoren zur Durchführung von Gas/Feststoff-Reaktionen, insbesondere zur Herstellung von Siliciumhalogenverbindungen mittels Silicium-enthaltender Kontaktmassen
US5140950A (en) * 1991-05-15 1992-08-25 Foster Wheeler Energy Corporation Fluidized bed combustion system and method having an integral recycle heat exchanger with recycle rate control and backflow sealing
US5299532A (en) * 1992-11-13 1994-04-05 Foster Wheeler Energy Corporation Fluidized bed combustion system and method having multiple furnace and recycle sections
FR2837561B1 (fr) * 2002-03-25 2004-05-21 Alstom Switzerland Ltd Foyer de chaudiere a lit fluidise comprenant deux soles separees par un entrejambe
FR2855593B1 (fr) * 2003-05-28 2008-09-05 Alstom Switzerland Ltd Element d'installation de combustion dont les raidisseurs sont des echangeurs de chaleur.
KR200373290Y1 (ko) * 2004-09-16 2005-01-14 최창호 지하실 이중벽용 패널

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072535A (en) * 1931-11-21 1937-03-02 Gasoline Prod Co Inc Method of and radiant heat stills for distilling hydrocarbon oils
US3130714A (en) 1961-05-18 1964-04-28 Shell Oil Co Tube furnace
US5215042A (en) 1990-02-20 1993-06-01 Metallgesellschaft Aktiengesellschaft Fluidized bed reactor
US5707591A (en) 1993-11-10 1998-01-13 Gec Alsthom Stein Industrie Circulating fluidized bed reactor having extensions to its heat exchange area
US5678497A (en) 1996-04-30 1997-10-21 Foster Wheeler Energy International, Inc. Apparatus for distributing secondary air into a large scale circulating fluidized bed
US5836257A (en) * 1996-12-03 1998-11-17 Mcdermott Technology, Inc. Circulating fluidized bed furnace/reactor with an integral secondary air plenum
EP0864834A1 (fr) * 1997-03-13 1998-09-16 GEC ALSTHOM Stein Industrie Echangeur à lit fluidisé dense destiné à être associé à un réacteur à lit fluidisé circulant
EP1141626B1 (en) 1998-11-20 2004-04-14 Foster Wheeler Energia Oy Fluidized bed reactor
DE10254780A1 (de) 2002-11-22 2004-06-17 Alstom Power Boiler Gmbh Durchlaufdampferzeuger mit zirkulierender atmosphärischer Wirbelschichtfeuerung

Also Published As

Publication number Publication date
PL1875130T3 (pl) 2017-03-31
CN101166933B (zh) 2010-10-20
KR100919754B1 (ko) 2009-10-07
EP1875130A1 (fr) 2008-01-09
ES2603405T3 (es) 2017-02-27
FR2884900A1 (fr) 2006-10-27
WO2006114551A1 (fr) 2006-11-02
US20090084293A1 (en) 2009-04-02
CN101166933A (zh) 2008-04-23
FR2884900B1 (fr) 2007-11-30
KR20080003925A (ko) 2008-01-08
US9175846B2 (en) 2015-11-03

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