SE454725B - Reactor chamber with cooled tube panel walls - Google Patents
Reactor chamber with cooled tube panel wallsInfo
- Publication number
- SE454725B SE454725B SE8604269A SE8604269A SE454725B SE 454725 B SE454725 B SE 454725B SE 8604269 A SE8604269 A SE 8604269A SE 8604269 A SE8604269 A SE 8604269A SE 454725 B SE454725 B SE 454725B
- Authority
- SE
- Sweden
- Prior art keywords
- segment
- tube
- panel walls
- segments
- tube panel
- Prior art date
Links
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
- F23C10/18—Details; Accessories
-
- 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
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/101—Tubes having fins or ribs
- F22B37/102—Walls built-up from finned tubes
-
- 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
Abstract
Description
454 725 monterade över varandra tvärs panelväggarna täcker lämpligen den övre avvisaren kälsvetsen på den undre avvisaren. 454,725 mounted one above the other across the panel walls suitably cover the upper deflector the butt weld on the lower deflector.
Enligt ett fördelaktigt utföringsexempel av uppfinningen är avvisarna formade av kvadratisk ståltråd och deras ytterkanter sträcker sig högst 20 mm ut från panelväggens mantelyta.According to an advantageous embodiment of the invention, the deflectors are formed of square steel wire and their outer edges extend no more than 20 mm from the mantle surface of the panel wall.
Uppfinningen skall beskrivas närmare med hänvisning till ett utföringsexempel, som visas på de bifogade ritningarna, varvid Pig. 1 är en planvy visande ett avsnitt av en panelvägg, och Pig. 2 är ett snitt längs linjen II-II i Fig. 1 Den i Fig. 1 visade panelväggen 10 omfattar tuber 11, vilka är trycksatta medelst ett kylmedium, och är insvetsade i en plätfena 12, med ett visst delningsavstånd. Den nedre delen av panelväggarna är klädda med ett keramiskt material 13.The invention will be described in more detail with reference to an exemplary embodiment, which is shown in the accompanying drawings, in which Pig. 1 is a plan view showing a section of a panel wall, and Pig. 2 is a section along the line II-II in Fig. 1. The panel wall 10 shown in Fig. 1 comprises tubes 11, which are pressurized by means of a cooling medium, and are welded into a plate fin 12, with a certain dividing distance. The lower part of the panel walls is clad with a ceramic material 13.
I normala fall utgör gränszonen mellan panelväggen 10 och murverket 13 ett särskilt erosionsdrabbat område, beroende på riktningsändringarna hos den i huvudsak nedåt strömmande gasen/partiklarna. Erosionen kan leda till brott på tuberna, om inte pannanläggningen periodvis stängs av för översyn och byte av tuber, vilka reparationer är mycket kostsamma.In normal cases, the boundary zone between the panel wall 10 and the masonry 13 constitutes a particularly erosion-affected area, due to the changes in the direction of the gas / particles flowing substantially downwards. Erosion can lead to rupture of the tubes, unless the boiler plant is periodically shut down for inspection and replacement of tubes, which repairs are very costly.
Såsom framgår av figurerna har det erosionsutsatta gräns- partiet försetts med avvisare 17 i form av ringsegment 14, vilka anbringats medelst kälsvets 15 direkt pä panelväggen, så att de ansluter med en innerkant 14a mot väggens mantel- yta. Avvisarna är placerade tvärs varje panelvägg 10, så att den övre avvisaren med sin ytterkant 14b täcker den till den undre avvisaren hörande kälsvetsen. Dessa svetsar görs sä, att de förbinder ändarna på horisontellt, bredvid varandra monterade ringsegment, via plâtfenorna 12, så att även nämnda fenor 12 skyddas från erosion.As can be seen from the figures, the erosion-exposed boundary portion has been provided with deflectors 17 in the form of ring segments 14, which are applied by means of keel welds 15 directly to the panel wall, so that they connect with an inner edge 14a to the jacket surface. The deflectors are placed across each panel wall 10, so that the upper deflector with its outer edge 14b covers the keel weld belonging to the lower deflector. These welds are made so that they connect the ends of horizontal, adjacent ring segments, via the plate fins 12, so that also said fins 12 are protected from erosion.
Ringsegmenten är formade av kvadratisk ståltråd, varvid en lämplig tjocklek kan vara exempelvis 8 mm. Detta mått är dock på intet sätt bindande för uppfinningen, utan kan variera inom gränserna 5 - 20 mm beroende på den aktuella 454 725 strömningshastigheten, som varierar vid olika avsnitt av reaktorrummet och naturligtvis även till följd av reaktorns kapacitet. Det jämförelsevis ringa breddmåttet på avvisarna och det faktum att de är monterade så att de divergerar utåt-nedåt från tubens mantelyta medför icke någon nämnvärd uppbromsning av den nedåtgående strömmen av gas och partiklar. Avvisarna 17 åstadkommer snarare en viss utflytt- ning av partikelströmmen från tubernas mantelytor. Skarven mellan panelväggarna och det murade materialet 13 är täckt av en plåt 16.The ring segments are formed of square steel wire, whereby a suitable thickness can be, for example, 8 mm. However, this dimension is in no way binding on the invention, but can vary within the limits of 5 - 20 mm depending on the actual 454 725 flow rate, which varies at different sections of the reactor space and of course also due to the capacity of the reactor. The comparatively small width of the deflectors and the fact that they are mounted so that they diverge outwards and downwards from the mantle surface of the tube do not result in any appreciable braking of the downward flow of gas and particles. The deflectors 17 rather cause a certain displacement of the particle flow from the mantle surfaces of the tubes. The joint between the panel walls and the masonry material 13 is covered by a plate 16.
Avvisarna kan appliceras i grupper, som visat, på särskilt utsatta platser i reaktorrummet, eller mera spritt med ett visst individuellt avstånd på övriga erosionsutsatta partier. Antalet rader av avvisare och deras inbördes avstånd bestäms av driftbetingelserna och med hänsyn till det reparationsintervall som gäller för respektive anläggning.The repellents can be applied in groups, as shown, in particularly exposed places in the reactor chamber, or more spread with a certain individual distance on other erosion-exposed parts. The number of rows of deflectors and their mutual distances are determined by the operating conditions and with regard to the repair interval that applies to each facility.
Reparation av avvisarna tillgår så, att de antingen lagas genom påförsel av svetsmaterial till ursprunglig form, eller de ersätts av nya ringsegment. Dessa förfaranden kan upprepas utan att tuberna behöver bytas och genomförs med billigt lagningsmaterial.Repairs to the deflectors are made so that they are either repaired by applying welding material to its original shape, or they are replaced by new ring segments. These procedures can be repeated without the need to replace the tubes and perform them with inexpensive repair material.
Uppfinningen är icke begränsad till det ovan beskrivna utföringsexemplet, utan flera varianter är tänkbara inom ramen för efterföljande krav. Exempelvis kan avvisarna fram- ställas av rektangulärt stångmaterial eller alternativt stansas ur en plåt.The invention is not limited to the embodiment described above, but several variants are conceivable within the scope of the appended claims. For example, the deflectors can be made of rectangular rod material or alternatively punched out of a plate.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8604269A SE454725B (en) | 1986-10-08 | 1986-10-08 | Reactor chamber with cooled tube panel walls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8604269A SE454725B (en) | 1986-10-08 | 1986-10-08 | Reactor chamber with cooled tube panel walls |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8604269D0 SE8604269D0 (en) | 1986-10-08 |
SE8604269L SE8604269L (en) | 1988-04-09 |
SE454725B true SE454725B (en) | 1988-05-24 |
Family
ID=20365859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8604269A SE454725B (en) | 1986-10-08 | 1986-10-08 | Reactor chamber with cooled tube panel walls |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE454725B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091156A (en) * | 1989-02-13 | 1992-02-25 | A. Ahlstrom Corporation | Waterwalls in a fluidized bed reactor |
WO1996010657A1 (en) * | 1994-10-03 | 1996-04-11 | Foster Wheeler Energia Oy | Arrangement in a wall and a method of coating a wall |
-
1986
- 1986-10-08 SE SE8604269A patent/SE454725B/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091156A (en) * | 1989-02-13 | 1992-02-25 | A. Ahlstrom Corporation | Waterwalls in a fluidized bed reactor |
WO1996010657A1 (en) * | 1994-10-03 | 1996-04-11 | Foster Wheeler Energia Oy | Arrangement in a wall and a method of coating a wall |
Also Published As
Publication number | Publication date |
---|---|
SE8604269D0 (en) | 1986-10-08 |
SE8604269L (en) | 1988-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1073882C (en) | Circulating fluidized bed reactor having extensions to its heat exchange area | |
WO2006120371A1 (en) | A rotary heat exchanger and a method of reducing leakage in a rotary heat exchanger | |
KR950005139B1 (en) | Bed reactor | |
US4715809A (en) | Fluidized bed having modified surfaces in the heat extractor | |
SE454725B (en) | Reactor chamber with cooled tube panel walls | |
US4554967A (en) | Erosion resistant waterwall | |
FI98405B (en) | Fire-grate structure in a fluidised-bed boiler | |
SE432983B (en) | Spool valve | |
US4027654A (en) | Damper assembly for high temperature or corrosive gases | |
US5269262A (en) | Combustion unit | |
EP0663060B1 (en) | Grate element | |
RU2335697C2 (en) | Reactor enclosure nozzle with fluidised layer | |
USRE27908E (en) | Fluid contact tray | |
US8141502B2 (en) | Fluidized bed boiler and a grate element for the same | |
EP0492398B1 (en) | Boiler and a supported heat transfer bank arranged thereto | |
US4635713A (en) | Erosion resistant waterwall | |
EP0349765B1 (en) | Fluidised-bed combustion | |
KR101982940B1 (en) | Structure of tube | |
SU1084301A1 (en) | Device for cooling wall of metallurgical furnace | |
FI94984C (en) | Fluidized bed reactor water walls | |
US1685170A (en) | Ventilator for chimneys | |
US3661177A (en) | Fluid distributors | |
EP0209626B1 (en) | Erosion resistant waterwall | |
SE418903B (en) | RELEASING CERAMIC NOZZLE PLATE OF ELDFAST STAMP PAPER WITH THE ORGANIZED NOZZLE | |
SE441863B (en) | Device for supply of fluidisation gas to a fireplace |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8604269-4 Effective date: 19920510 Format of ref document f/p: F |