EP0852314B1 - Foyer pour chaudière à LFC à sole améliorée - Google Patents
Foyer pour chaudière à LFC à sole améliorée Download PDFInfo
- Publication number
- EP0852314B1 EP0852314B1 EP97403176A EP97403176A EP0852314B1 EP 0852314 B1 EP0852314 B1 EP 0852314B1 EP 97403176 A EP97403176 A EP 97403176A EP 97403176 A EP97403176 A EP 97403176A EP 0852314 B1 EP0852314 B1 EP 0852314B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hearth
- sole
- floor
- fluidized bed
- circulating fluidized
- 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
Links
Images
Classifications
-
- 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
-
- 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
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
-
- 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
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
- F23C2206/101—Entrained or fast fluidised bed
Definitions
- the invention relates to a fireplace for a circulating fluidized bed boiler, comprising a sole formed by a set of tubes. These tubes are intended to be connected to the inlet and outlet manifolds of a heat transfer fluid.
- the efficiency of fluidization of solids at the bottom of the hearth is a function of the shape of the sole and subsequently the shape of the screens forming the junction between this hearth and the upper part of the hearth.
- the sole has a form essentially rectangular, square or circular.
- Document EP-A-0349030 describes a circulating fluidized bed reactor in which one or more separating elements are placed at the interior of the fireplace, at its base, so as to have a unique background of focus, in several segments, but communicating with each other other.
- the outer perimeter of the fireplace, at its base, is rectangular.
- the object of the invention is to provide a hearth for a bed boiler fluidized with an improved shaped bottom allowing to increase the number of connections that can be made on its external perimeter, while taking into account the production constraints indicated above.
- the subject of the invention is therefore a hearth for a fluidized bed boiler circulating, comprising a sole made up of a set of sole smaller elementaries each having a shape substantially rectangular, these elementary sole being juxtaposed with such that the hearth floor is in one piece, characterized in that it is formed by a set of tubes and that it has a surface section whose external perimeter results from the use a combination of vertical hearth faces inclined towards the interior by producing a sole whose external perimeter defined by more than four sides, has inside corners.
- the sole has a H-shaped surface section particularly suitable for fireplaces whose upper section is rectangular or square.
- the sole has a section cross-shaped surface particularly suitable for homes whose upper section is octagonal.
- Figure 1 very schematically shows a bed boiler hearth fluidized with an H-shaped sole
- FIG. 2 shows in more detail the realization of the hearth and its hearth using tubes.
- Figure 3 very schematically shows a bed boiler hearth fluidized with a cross-shaped sole.
- FIG. 1 the top 1 of a fireplace for a CFL boiler presents here a rectangular section.
- This hearth comprises a hearth 4 formed by a set of tubes 5 connected to fluid inlet and outlet manifolds such as 6.
- Sole 4 is consisting of a set of elementary sole 4A, 4B, 4C of smaller size each having a substantially rectangular shape. These smaller soles 4A, 4B, 4C are juxtaposed edge to edge and constitute a sole 4 in a single room.
- the surface section of the sole has a perimeter which is defined here by 12 sides which increases the number of connections that can be made on the perimeter of the sole in relation to an equivalent surface sole but rectangular in shape with 4 sides.
- FIG 2 we partially see the focal point of Figure 1.
- the vertical screens as 2 and inclined as 3 are made by an assembly of tubes 5 to fins welded together to form a tight wall. They are powered by the collectors 6.
- the tubes 5 are connected to the collectors 6 and bent so as to form a sealed wind box which allows the primary air supply of the hearth and also to form the hearth 4 of the hearth H-shaped
- the junction between the hearth 4 and the top of the rectangular hearth is still provided by the tubes 5 which are assembled with more or less spacing less important between them.
- the cased sides are protected inside the fireplace with a layer of refractory concrete 7.
- the hearth 4 of the hearth is constituted by a set of elementary sole 4'A, 4'B, 4'C, 4'D, 4'E of form substantially rectangular.
- the elementary soles 4'A to 4'E are juxtaposed edge to edge to form the sole 4.
- the sole 4 has a surface section in form of cross, the perimeter of which is further defined by 12 sides.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Dairy Products (AREA)
- Combustion Of Fluid Fuel (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
Claims (3)
- Foyer pour chaudière à lit fluidisé circulant, comprenant une sole (4) constituée d'un ensemble de soles élémentaires (4A à 4C ; 4'A à 4'E) de plus petite taille ayant chacune une forme sensiblement rectangulaire, ces soles élémentaires étant juxtaposées de telle manière que la sole (4) du foyer soit en une seule pièce, caractérisée en ce qu'elle est formée par un ensemble de tubes (5) et qu'elle présente une section de surface dont le périmètre externe résulte de l'utilisation d'une combinaison de faces de foyer verticales (2) et inclinées vers l'intérieur (3) en produisant une sole (4) dont le périmètre externe défini par plus de quatre côtés, présente des angles rentrants.
- Foyer selon la revendication 1, caractérisé en ce que la sole (4) a une section de surface en forme de H.
- Foyer selon la revendication 1, caractérisé en ce que la sole (4) a une section de surface en forme de croix.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9700010 | 1997-01-02 | ||
FR9700010A FR2757930B1 (fr) | 1997-01-02 | 1997-01-02 | Foyer pour chaudiere a lfc a sole amelioree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0852314A1 EP0852314A1 (fr) | 1998-07-08 |
EP0852314B1 true EP0852314B1 (fr) | 2001-10-17 |
Family
ID=9502358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97403176A Expired - Lifetime EP0852314B1 (fr) | 1997-01-02 | 1997-12-30 | Foyer pour chaudière à LFC à sole améliorée |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0852314B1 (fr) |
CN (1) | CN1114788C (fr) |
ES (1) | ES2165009T3 (fr) |
FR (1) | FR2757930B1 (fr) |
UA (1) | UA42099C2 (fr) |
WO (1) | WO1998029688A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102635855A (zh) * | 2012-04-24 | 2012-08-15 | 清华大学 | 一种三旋风分离器的循环流化床锅炉炉膛结构 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE437722B (sv) * | 1980-10-22 | 1985-03-11 | Stal Laval Turbin Ab | Virvelbeddsbrennkammare |
DE3706538A1 (de) * | 1987-02-28 | 1988-09-08 | Metallgesellschaft Ag | Wirbelschichtanlage |
IN170802B (fr) * | 1988-06-25 | 1992-05-23 | Metallgesellschaft Ag | |
FI97315C (fi) * | 1990-09-26 | 1996-11-25 | Stein Industrie | Leijukerroskattilan tulipesäseinämän jäähdytyslaitteisto |
-
1997
- 1997-01-02 FR FR9700010A patent/FR2757930B1/fr not_active Expired - Lifetime
- 1997-12-30 WO PCT/FR1997/002456 patent/WO1998029688A1/fr active Application Filing
- 1997-12-30 CN CN97193886A patent/CN1114788C/zh not_active Expired - Lifetime
- 1997-12-30 EP EP97403176A patent/EP0852314B1/fr not_active Expired - Lifetime
- 1997-12-30 UA UA98094670A patent/UA42099C2/uk unknown
- 1997-12-30 ES ES97403176T patent/ES2165009T3/es not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102635855A (zh) * | 2012-04-24 | 2012-08-15 | 清华大学 | 一种三旋风分离器的循环流化床锅炉炉膛结构 |
CN102635855B (zh) * | 2012-04-24 | 2014-07-16 | 清华大学 | 一种三旋风分离器的循环流化床锅炉炉膛结构 |
Also Published As
Publication number | Publication date |
---|---|
FR2757930A1 (fr) | 1998-07-03 |
ES2165009T3 (es) | 2002-03-01 |
FR2757930B1 (fr) | 1999-02-26 |
EP0852314A1 (fr) | 1998-07-08 |
CN1114788C (zh) | 2003-07-16 |
UA42099C2 (uk) | 2001-10-15 |
WO1998029688A1 (fr) | 1998-07-09 |
CN1216606A (zh) | 1999-05-12 |
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