SE437124B - A boiler with a furnace chamber clad with cooling tubes. - Google Patents

A boiler with a furnace chamber clad with cooling tubes.

Info

Publication number
SE437124B
SE437124B SE8302935A SE8302935A SE437124B SE 437124 B SE437124 B SE 437124B SE 8302935 A SE8302935 A SE 8302935A SE 8302935 A SE8302935 A SE 8302935A SE 437124 B SE437124 B SE 437124B
Authority
SE
Sweden
Prior art keywords
boiler
particle separator
tube system
room
cooled
Prior art date
Application number
SE8302935A
Other languages
Swedish (sv)
Other versions
SE8302935D0 (en
SE8302935L (en
Inventor
H Rosenblad
Original Assignee
Generator Ind Ab
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 Generator Ind Ab filed Critical Generator Ind Ab
Priority to SE8302935A priority Critical patent/SE437124B/en
Publication of SE8302935D0 publication Critical patent/SE8302935D0/en
Publication of SE8302935L publication Critical patent/SE8302935L/en
Publication of SE437124B publication Critical patent/SE437124B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/20Apparatus in which the axial direction of the vortex is reversed with heating or cooling, e.g. quenching, means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007Modifications 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
    • F22B31/0084Modifications 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 with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/12Arrangements of dust collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001Extraction of waste gases, collection of fumes and hoods used therefor
    • F27D17/002Details of the installations, e.g. fume conduits or seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

An appliance on a furnace with a firing-room (10) surrounded by a cooler tube for firing with a circulating floating bed, is attached to a particle separator (19) for the separation of solid bed particles from flue gas. The particle separator is cooled and has a tube system with substantially the same height extension as the fire-room components' tube system, so that the furnace's and particle separator's tube system follow each other in temperature based movements, and so that solid transitions can be obtained between the furnace components and the particle separator components.<IMAGE>

Description

8-302935-5 lO 15 20 25 30 35 2 Cyklonens kylsystem anslutes lämpligen till reak- torns eller konvektionsdelens kylsystem. 8-302935-5 10 15 20 25 30 35 2 The cooling system of the cyclone is suitably connected to the cooling system of the reactor or convection section.

Företrädesvis användes en cyklon för partikelav- skiljning men givetvis är också andra typer av partikel- avskiljare användbara för ändamålet.Preferably a cyclone is used for particle separation but of course other types of particle separators are also useful for the purpose.

Ytterligare detaljer hos panna och cyklon framgår av bifogade ritningar. Fig l visar en längdsektíon genom en panna enligt föreliggande uppfinning. Fig 2 visar en sektion längs linjen II-II i fig l. Fig 3 visar en' sektion, som är dragen längs linjen III-III i fig l, varvid den nedre vänstra cyklonen i fig 3 visas 1 sektion längs linjen IIIA-IIIA i fig l. Fig 4 visar en sidovy av enbart den nedre vänstra cyklonen i fig 3. Fig 5 visar en sektion längs linjen V-V i fig 4. Fig 6 visar en sektion längs linjen VI-VI i fig 4. Fig 7 visar en sektion längs linjen VII-VII i fig 4. Fig 8 visar en sektion längs linjen VIII-VIII i fig 4.Further details of the boiler and cyclone are shown in the accompanying drawings. Fig. 1 shows a longitudinal section through a boiler according to the present invention. Fig. 2 shows a section along the line II-II in Fig. 1. Fig. 3 shows a section drawn along the line III-III in Fig. 1, the lower left cyclone in Fig. 3 showing 1 section along the line IIIA-IIIA in Fig. 1 shows a side view of only the lower left cyclone in Fig. 3. Fig. 5 shows a section along the line VV in Fig. 4. Fig. 6 shows a section along the line VI-VI in Fig. 4. Fig. 7 shows a section along line VII-VII in Fig. 4. Fig. 8 shows a section along the line VIII-VIII in Fig. 4.

Den i fig l visade pannan enligt uppfinningen har formen av en svävbäddseldad panna med ett eldstadsrum 10, vars väggar är på alla sidor beklätt med väggtuber.The boiler according to the invention shown in Fig. 1 is in the form of a floating bed-fired boiler with a fireplace room 10, the walls of which are lined with wall tubes on all sides.

Väggtuberna ll utgår från undre fördelare l2 och mynnar i övre samlare l3. De väggtuber 12, som bildar eldstads- rummets bakvägg och tak utgår från undre tvärgående fördelare l5 och mynnar i en tvärgående samlare 16.The wall tubes l1 start from the lower distributor l2 and open into the upper collector l3. The wall tubes 12, which form the rear wall and ceiling of the fireplace room, start from the lower transverse distributor 15 and open into a transverse collector 16.

Vid eldstadsrummets undre ände finns en med tuber beklädd luftfördelningskammare 17, som via icke visade munstycken matar luft uppåt i eldstadsrummet 10. Vid övre änden ' av eldstadsrummet l0 finns öppningar l8, genom vilka rökgaser och svävbäddspartiklar kan inströmma i endera av två cyklonavskiljare 19, som beskrives närmare i det följande. Cyklonavskiljarna har sin luftavloppsled- ning 20 ansluten till inloppsöppningar 21 ovanför den tvärgående samlaren 16. Dessa inloppsöppningar 12 leder rökgaserna in till ett efterkopplat nedåtgående gas- stråk 22, i vilket ytterligare värmeväxlingsytor 23, 24 och 25 är insatta. Vid nedre änden av gasstråket 22 finns en asksamlingstratt 26, från vilken ett uppåt- 10 15 20 25 30 35 83-0329 3 5- 5 3 riktat gasstrák 27 med efterkopplade värmningsväxlings- ytor 28 finnes. Gasstråket 27 är anslutet till skorsten.At the lower end of the fireplace room there is a tubular air distribution chamber 17, which via air (not shown) feeds air upwards into the fireplace room 10. At the upper end 'of the fireplace room 10 there are openings l8, through which flue gases and fluidized bed particles can flow into either of two cyclone separators 19. described in more detail below. The cyclone separators have their air drain line 20 connected to inlet openings 21 above the transverse collector 16. These inlet openings 12 lead the flue gases into a connected downward gas strip 22, in which further heat exchange surfaces 23, 24 and 25 are inserted. At the lower end of the gas strip 22 there is an ash collecting funnel 26, from which there is an upwardly directed gas strip 27 with connected heating exchange surfaces 28. The gas strip 27 is connected to the chimney.

Den i fig l och 2 visade pannan har sålunda ett bärande rörstativ, i vilket fördelarna 12, 15 och ytterligare fördelare ingår liksom samlarna 13 och 16 samt ytter- ligare samlare. I rörstativet ingår också fallrör 29) 30. Till rörstativets övre samlare är en ångavskilj- ningsdom 31 ansluten på sedvanligt sätt.The boiler shown in Figs. 1 and 2 thus has a supporting pipe frame, in which the distributors 12, 15 and further distributors are included as well as the collectors 13 and 16 and further collectors. The pipe frame also includes downcomers 29) 30. A steam separation judgment 31 is connected to the pipe collector's upper collector in the usual way.

För att minska partikelbelastningen i cyklonavskil- jarna 19 har ett antal vertikala s k balkavskiljare 32 anordnats i utloppsöppningarna 18. Dessa balkavskil- jare kan vara utformade ungefär så som visas i den svens- ka patentansökningen 8201589-2.In order to reduce the particle load in the cyclone separators 19, a number of vertical so-called beam separators 32 have been arranged in the outlet openings 18. These beam separators can be designed approximately as shown in Swedish patent application 8201589-2.

Vid kända pannor med efterkopplade cyklonavskil- jare har, såsom påpekats ovan, svårigheter uppstått till följd av betydande rörelser i övergången mellan eldstadsdelen och cyklonen, vilket medfört stora kon- struktionsproblem, som man försökt lösa med hjälp av bälgar eller andra organ, som möjliggör relativrörel- ser. Dessa problem har enligt föreliggande uppfinning lösts genom att vardera cyklonen 19 har utförts med kylda tubväggar och med ett tubsystem, som har väsent- ligen samma höjdutsträckning som pannans tubsystem.In known boilers with reconnected cyclone separators, as pointed out above, difficulties have arisen as a result of significant movements in the transition between the fireplace part and the cyclone, which has led to major construction problems, which have been attempted to solve with the help of bellows or other means enabling relative movement. - looks. These problems have been solved according to the present invention by each cyclone 19 being made with cooled tube walls and with a tube system which has substantially the same height extension as the tube system of the boiler.

Som framgår av fig l och 3-8 har cyklonen sålunda bil- dats med hjälp av kylda tuber 33, som utgår från en fördelarring 34, vilken medelst tre som ben tjänstgöran- de matarrör 35 är anslutet till pannans rörstativ. Tu- berna 33 är vid övre änden anslutna till en samlartubring 36, som är sammankopplad med pannans samlarsystem. Ge- nom denna samlartubring 36 överföres sålunda de från partiklar väsentligen befriade rökgaserna till pannans nedåtgående gasstråk 22.As can be seen from Figures 1 and 3-8, the cyclone has thus been formed by means of cooled tubes 33, which start from a distributor ring 34, which is connected to the pipe frame of the boiler by means of three feed tubes 35 serving as bone. The tubes 33 are connected at the upper end to a collector tube 36, which is connected to the collector system of the boiler. Through this collector tube 36, the flue gases substantially freed of particles are thus transferred to the downward gas path 22 of the boiler.

En del av väggtuberna 33 i cyklonavskiljaren är isärbockade för bildande av en inloppsöppning 37 medelst vilken cyklonen är förbunden med eldstadsrummet 10.Some of the wall tubes 33 in the cyclone separator are bent apart to form an inlet opening 37 by means of which the cyclone is connected to the fireplace space 10.

Mellan denna inloppsöppning 37 och eldstadsrummets hörn finns ett kanalparti 38 med kylande väggtuber 39, som 8302935-5 10 15 4 ingår i pannans tubsystem.Between this inlet opening 37 and the corner of the fireplace room there is a duct portion 38 with cooling wall tubes 39, which is included in the tube system of the boiler.

Vid cyklonernas nederände finns återföringskanaler 40 för återföring av avskilda partiklar till eldstads- rummet 10 under pannans drift. Avskiljning av askpartik- lar kan ske antingen genom en asklucka 41 eller genom ett askuttag 42. Aska kan också avlägsnas från nederänden av asksamlingstratten 26. Pannan har sedvanlig icke närmare visad utrustning för lufttillförsel och bränsle- tillförsel. I pannan kan även icke visade stödbrännare vara anordnade. c , Genom att cyklonerna har ett tubsystem av väsentli- gen samma höjdutsträckning som pannans tubsystem, kommer de vid kända konstruktioner förekommande svårigheterna med överdrivna rörelser i övergångarna mellan panna och cykloner inte att uppstå. Cyklonens tubsystem kommer sålunda att följa med 1 panntubsystemets rörelser vid temperaturstegringar och temperatursänkningar.At the lower end of the cyclones are return channels 40 for returning separated particles to the fireplace space 10 during the operation of the boiler. Separation of ash particles can take place either through an ash hatch 41 or through an ash outlet 42. Ash can also be removed from the lower end of the ash collecting funnel 26. The boiler usually has equipment not shown in more detail for air supply and fuel supply. Support burners (not shown) can also be arranged in the boiler. c, Because the cyclones have a tube system of substantially the same height extent as the boiler tube system, the difficulties occurring in known constructions with excessive movements in the transitions between boiler and cyclones will not arise. The cyclone's tube system will thus follow the movements of the boiler tube system during temperature rises and temperature drops.

Claims (1)

1. 0 15 8302935-5 LD PATENTKRAV Anordning vid en panna, vilken har dels ett eld- stadsrum (l0), som är kylt med i ett kyltubsystem (ll-16) ingående kyltuber (ll) och är avsett för eldning med en cirkulerande svävbädd, dels cn med eldstadsrummet förbunden, kyld partikelavskiljare (19), företrädes- vis av cyklontyp, som är förbunden med eldstadsrummet för att matas med vid eldningen erhållna rökgaser för avskiljning av fasta bäddpartiklar från dem, och dels àterföringsanordningar (40), vilka är anordnade att till eldstadsrummet (10) återföra åtminstone en del av de avskilda bäddpartiklarna från partikelavskilja- ren (19), k ä n n e t e c k n a d därav, att partikel- avskiljaren är kyld med ett kyltubsystem (33-36), som har väsentligen samma höjdutsträckning som eldstadsrum- mets (10) kyltubsystem (ll-16).1. 0 15 8302935-5 LD CLAIMS Requirement Device for a boiler, which has a fireplace room (l0), which is cooled with cooling tubes (ll) included in a cooling tube system (ll-16) and is intended for heating with a circulating suspended bed, partly cn connected to the fireplace room, cooled particle separator (19), preferably of the cyclone type, which is connected to the fireplace room to be fed with flue gases obtained during the firing to separate solid bed particles from them, and partly return devices (40), which are arranged to return to the fireplace room (10) at least a part of the separated bed particles from the particle separator (19), characterized in that the particle separator is cooled with a cooling tube system (33-36), which has substantially the same height extension as the fireplace room - mets (10) cooling tube system (ll-16).
SE8302935A 1983-05-25 1983-05-25 A boiler with a furnace chamber clad with cooling tubes. SE437124B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8302935A SE437124B (en) 1983-05-25 1983-05-25 A boiler with a furnace chamber clad with cooling tubes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8302935A SE437124B (en) 1983-05-25 1983-05-25 A boiler with a furnace chamber clad with cooling tubes.

Publications (3)

Publication Number Publication Date
SE8302935D0 SE8302935D0 (en) 1983-05-25
SE8302935L SE8302935L (en) 1984-11-26
SE437124B true SE437124B (en) 1985-02-11

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SE8302935A SE437124B (en) 1983-05-25 1983-05-25 A boiler with a furnace chamber clad with cooling tubes.

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298671A2 (en) * 1987-07-06 1989-01-11 Foster Wheeler Energy Corporation Cyclone separator having water-steam cooled walls
EP0413612A3 (en) * 1989-08-18 1991-07-31 Foster Wheeler Energy Corporation Fluidized bed steam generating system including a steam cooled cyclone separator
EP0457983A1 (en) * 1989-03-30 1991-11-27 Foster Wheeler Energy Corporation Cyclone separator including a hopper formed by water-steam cooled walls
EP0497528A1 (en) * 1991-01-31 1992-08-05 Foster Wheeler Energy Corporation Steam generating system utilizing separate fluid flow circuitry between the furnace section and the separating section
US5203284A (en) * 1992-03-02 1993-04-20 Foster Wheeler Development Corporation Fluidized bed combustion system utilizing improved connection between the reactor and separator
EP0931841A1 (en) * 1998-01-21 1999-07-28 Brifer International Ltd. Apparatus and process for the direct reduction of iron oxides

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298671A2 (en) * 1987-07-06 1989-01-11 Foster Wheeler Energy Corporation Cyclone separator having water-steam cooled walls
EP0298671A3 (en) * 1987-07-06 1990-03-28 Foster Wheeler Energy Corporation Cyclone separator having water-steam cooled walls
EP0457983A1 (en) * 1989-03-30 1991-11-27 Foster Wheeler Energy Corporation Cyclone separator including a hopper formed by water-steam cooled walls
EP0413612A3 (en) * 1989-08-18 1991-07-31 Foster Wheeler Energy Corporation Fluidized bed steam generating system including a steam cooled cyclone separator
EP0497528A1 (en) * 1991-01-31 1992-08-05 Foster Wheeler Energy Corporation Steam generating system utilizing separate fluid flow circuitry between the furnace section and the separating section
US5203284A (en) * 1992-03-02 1993-04-20 Foster Wheeler Development Corporation Fluidized bed combustion system utilizing improved connection between the reactor and separator
EP0559388A2 (en) * 1992-03-02 1993-09-08 Foster Wheeler Energy Corporation Fluidized bed combustion system utilizing improved connection between the reactor and separator
EP0559388A3 (en) * 1992-03-02 1993-12-29 Foster Wheeler Energy Corp Fluidized bed combustion system utilizing improved connection between the reactor and separator
EP0931841A1 (en) * 1998-01-21 1999-07-28 Brifer International Ltd. Apparatus and process for the direct reduction of iron oxides

Also Published As

Publication number Publication date
SE8302935D0 (en) 1983-05-25
SE8302935L (en) 1984-11-26

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