EP1490629B1 - Feuerraum für einen wirbelschichtkessel mit zwei durch eine ausbuchtung getrennten feuerböden - Google Patents

Feuerraum für einen wirbelschichtkessel mit zwei durch eine ausbuchtung getrennten feuerböden Download PDF

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Publication number
EP1490629B1
EP1490629B1 EP03727571A EP03727571A EP1490629B1 EP 1490629 B1 EP1490629 B1 EP 1490629B1 EP 03727571 A EP03727571 A EP 03727571A EP 03727571 A EP03727571 A EP 03727571A EP 1490629 B1 EP1490629 B1 EP 1490629B1
Authority
EP
European Patent Office
Prior art keywords
tubes
panel
crotch
panels
fluidized bed
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.)
Expired - Lifetime
Application number
EP03727571A
Other languages
English (en)
French (fr)
Other versions
EP1490629A1 (de
Inventor
Christian Enault
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
Alstom Technology AG
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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP1490629A1 publication Critical patent/EP1490629A1/de
Application granted granted Critical
Publication of EP1490629B1 publication Critical patent/EP1490629B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F22B31/0015—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 for boilers of the water tube type
    • F22B31/003—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 for boilers of the water tube type with tubes surrounding the bed or with water tube wall partitions
    • 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

Definitions

  • the invention relates to a furnace for a fluidized bed boiler comprising two soles separated by a crotch at the bottom of the furnace, and at least one panel of heat exchange tubes.
  • a fireplace of the type indicated above for a circulating fluidized bed boiler is known in particular from the patent application.
  • EP-A-0 477 849 It is known to install inside a fluidized bed boiler furnace one or more panels of heat exchange tubes traversed by a heat transfer fluid such as water or an emulsion of water and steam - as described for example in the document WO-A-98,25074 .
  • Each panel of tubes is arranged conventionally perpendicular to the side walls of the fireplace by being fixed or not.
  • a hearth comprising two soles separated by a crotch
  • such an arrangement has the disadvantage of limiting the number of panels that can be installed on the side walls of the fireplace without hindering the flow of particles to the cyclones provided on these side walls.
  • the object of the invention is to propose another arrangement of heat exchange tube panels that takes advantage of the structure of a fireplace having in its lower part a crotch.
  • the furnace for a fluidized bed boiler according to the invention is characterized in that the panel of heat exchange tubes is disposed vertically above said crotch and perpendicular to the longitudinal direction of said soles. In this way, it does not interfere with the load balance in the home.
  • a plurality of panels may be arranged in a row on the top of the crotch being spaced regularly from each other in said longitudinal direction so as to leave sufficient circulation space for the particles does not create pressure imbalances at the same time. inside the fireplace.
  • the tubes forming a panel are an extension of the tubes forming the crotch which prevents the formation of crossings in the crotch.
  • a fireplace according to the invention may also comprise an alternation of panels whose tubes are an extension of the tubes forming the crotch and panels whose tubes are connected to a collector disposed under the crotch. So there will be panels powered by the fluid flowing in the walls of the fireplace and panels fed either by the same fluid or by another heat transfer fluid.
  • each panel of tubes is fixed to the ceiling of the hearth so that the panel of tubes can, if necessary, be placed in tension between the crotch and the ceiling of the hearth to limit the vibrations produced by the circulation of the fluid. the tubes of the panels.
  • the figure 1 is a very schematic view of a fireplace according to the invention in longitudinal section showing a panel of tubes disposed on the crotch of the hearth.
  • the figure 2 is a very schematic view of the top of the fireplace showing the arrangement of several panels of tubes on the crotch of the hearth.
  • the figure 3 illustrates very schematically the formation of a panel of tubes with the tubes forming the crotch of the hearth.
  • the fireplace shown on the figure 1 is a furnace for circulating fluidized bed (CFL) boiler whose lower part forms a crotch 1 separating two soles 2.3 from the hearth. Outputs from the fireplace to cyclones are indicated by references 4,5.
  • the exits to the cyclones are usually arranged on the side walls of the hearth and a crotch fire may have four or more outlets to the cyclones disposed on either side of the crotch.
  • the fireplace according to the invention is equipped with at least one panel 6 of heat exchange tubes which is arranged vertically on the top of the crotch 1 and perpendicularly to the longitudinal direction A of the soles 2 and 3 which does not interfere not the flow of gases and particles indicated by the arrows GP and does not create pressure imbalance in the home.
  • Each panel 6 of heat exchange tubes is fixed to the ceiling 7 of the fireplace and is placed in tension between the ceiling and the crotch to prevent the unwanted vibrations of the tubes of the panel during operation of the fireplace.
  • FIG. 1 there is shown an inlet manifold 8 placed under the crotch 6 and an outlet manifold 9 placed on top of the ceiling 7 of the hearth to which the tubes of the panel 6 are connected.
  • a large number of panels 6 of tubes can be arranged in a row on the top of the crotch 1 being regularly spaced from each other along the crotch 1.
  • the tubes forming the heat exchange panels 6 may be an extension of the tubes forming the crotch of the hearth. It is also possible to have an alternation of panels 6 whose tubes are an extension of the tubes forming the crotch of the fireplace and panels whose tubes are connected to the inlet manifold 8.
  • the figure 3 illustrates a panel 6A (seen from above), the tubes 10 are an extension of the tubes 11 forming the crotch 1 and a panel 6B (seen from above), the tubes 12 are connected to the inlet manifold 8 (not shown).
  • the topology of the tubes forming the crotch 1 shown on the figure 3 is only an example of the invention.
  • the arrangement of the panels 6 according to the invention is suitable both for a crotch plane as illustrated on the figure 1 that an inverted V-shaped crotch. Furthermore, in the example shown, the outputs 4.5 to the cyclones are located on the side faces 13,14; they could be located on the transverse side faces 15 and 16

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)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Radio Relay Systems (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Information Transfer Between Computers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (5)

  1. Feuerraum für einen Wirbelschichtkessel mit zwei durch eine Ausbuchtung (1) im unteren Teil des Feuerraums getrennten Feuerböden (2,3), und mit mindestens einem Paneel (6) von Wärmeaustauschrohren, dadurch gekennzeichnet, dass das Rohrpaneel senkrecht oberhalb der besagten Ausbuchtung und rechtwinklig zur Längsrichtung (A) der besagten Feuerböden angeordnet ist.
  2. Feuerraum gemäß Anspruch 1 mit einer Reihe von in der besagten Längsrichtung untereinander regelmäßig beabstandeten Rohrpaneelen (6).
  3. Feuerraum gemäß einem der Ansprüche 1 oder 2, in dem die ein Paneel (6A) bildenden Rohre die Verlängerung der die Ausbuchtung bildenden Rohre sind.
  4. Feuerraum gemäß Anspruch 1 bis 3, mit einer Wechselfolge von Paneelen (6A), deren Rohre die Verlängerung der die Ausbuchtung bildenden Rohre sind, und von Paneelen (6B), deren Rohre an einen unter der Ausbuchtung angeordneten Sammler (8) angeschlossen sind.
  5. Feuerraum gemäß einem der Ansprüche 1 bis 4, mit einer Decke (7), an der jedes Rohrpaneel (6,6A,6B ) so befestigt ist, dass das Rohrpaneel zwischen der Ausbuchtung und der Decke des
EP03727571A 2002-03-25 2003-03-06 Feuerraum für einen wirbelschichtkessel mit zwei durch eine ausbuchtung getrennten feuerböden Expired - Lifetime EP1490629B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0203698A FR2837561B1 (fr) 2002-03-25 2002-03-25 Foyer de chaudiere a lit fluidise comprenant deux soles separees par un entrejambe
FR0203698 2002-03-25
PCT/FR2003/000715 WO2003081128A1 (fr) 2002-03-25 2003-03-06 Foyer de chaudière a lit fluidise comprenant deux soles séparées par un entrejambe

Publications (2)

Publication Number Publication Date
EP1490629A1 EP1490629A1 (de) 2004-12-29
EP1490629B1 true EP1490629B1 (de) 2008-11-12

Family

ID=27799240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03727571A Expired - Lifetime EP1490629B1 (de) 2002-03-25 2003-03-06 Feuerraum für einen wirbelschichtkessel mit zwei durch eine ausbuchtung getrennten feuerböden

Country Status (11)

Country Link
US (1) US7152537B2 (de)
EP (1) EP1490629B1 (de)
CN (1) CN1283950C (de)
AT (1) ATE414242T1 (de)
AU (1) AU2003233363A1 (de)
BR (1) BR0303655A (de)
CA (1) CA2480020A1 (de)
DE (1) DE60324667D1 (de)
ES (1) ES2316752T3 (de)
FR (1) FR2837561B1 (de)
WO (1) WO2003081128A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884900B1 (fr) * 2005-04-26 2007-11-30 Alstom Technology Ltd Reacteur a lit fluidise avec double extension de paroi
CN101696798B (zh) * 2009-05-18 2011-05-04 西安热工研究院有限公司 带有异型分隔墙的紧凑型循环流化床锅炉
CN102226518B (zh) * 2011-02-01 2013-03-06 中国科学院工程热物理研究所 大型循环流化床锅炉
ES2637364T3 (es) * 2012-03-20 2017-10-13 General Electric Technology Gmbh Caldera de lecho fluidizado circulante

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387590A (en) * 1967-03-16 1968-06-11 Interior Usa System for regulating the total heat output in a burning fluidized bed heat exchanger or boiler
US3893426A (en) * 1974-03-25 1975-07-08 Foster Wheeler Corp Heat exchanger utilizing adjoining fluidized beds
US4184455A (en) * 1978-04-10 1980-01-22 Foster Wheeler Energy Corporation Fluidized bed heat exchanger utilizing angularly extending heat exchange tubes
US4314967A (en) * 1980-10-02 1982-02-09 Dorr-Oliver Incorporated Fluidized bed reactor with vertical cooling coils
FI97315C (fi) * 1990-09-26 1996-11-25 Stein Industrie Leijukerroskattilan tulipesäseinämän jäähdytyslaitteisto
US5836257A (en) * 1996-12-03 1998-11-17 Mcdermott Technology, Inc. Circulating fluidized bed furnace/reactor with an integral secondary air plenum
US6532905B2 (en) * 2001-07-17 2003-03-18 The Babcock & Wilcox Company CFB with controllable in-bed heat exchanger

Also Published As

Publication number Publication date
WO2003081128A1 (fr) 2003-10-02
US7152537B2 (en) 2006-12-26
ES2316752T3 (es) 2009-04-16
CA2480020A1 (fr) 2003-10-02
CN1643302A (zh) 2005-07-20
US20050092219A1 (en) 2005-05-05
DE60324667D1 (de) 2008-12-24
AU2003233363A1 (en) 2003-10-08
ATE414242T1 (de) 2008-11-15
BR0303655A (pt) 2004-07-13
FR2837561B1 (fr) 2004-05-21
EP1490629A1 (de) 2004-12-29
FR2837561A1 (fr) 2003-09-26
CN1283950C (zh) 2006-11-08

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