EP0180497A1 - Wirbelschischtapparat mit Wärmetauscher und mit einem Einblasnetz für Sekundärluft - Google Patents

Wirbelschischtapparat mit Wärmetauscher und mit einem Einblasnetz für Sekundärluft Download PDF

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Publication number
EP0180497A1
EP0180497A1 EP85401905A EP85401905A EP0180497A1 EP 0180497 A1 EP0180497 A1 EP 0180497A1 EP 85401905 A EP85401905 A EP 85401905A EP 85401905 A EP85401905 A EP 85401905A EP 0180497 A1 EP0180497 A1 EP 0180497A1
Authority
EP
European Patent Office
Prior art keywords
pipe
tubes
heat exchanger
external pipe
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.)
Granted
Application number
EP85401905A
Other languages
English (en)
French (fr)
Other versions
EP0180497B1 (de
Inventor
Roger Marcel Puff
Jacques Dreuilhe
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.)
Charbonnages de France CDF
IFP Energies Nouvelles IFPEN
Areva NP SAS
Original Assignee
Charbonnages de France CDF
IFP Energies Nouvelles IFPEN
Framatome SA
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 Charbonnages de France CDF, IFP Energies Nouvelles IFPEN, Framatome SA filed Critical Charbonnages de France CDF
Priority to AT85401905T priority Critical patent/ATE36055T1/de
Publication of EP0180497A1 publication Critical patent/EP0180497A1/de
Application granted granted Critical
Publication of EP0180497B1 publication Critical patent/EP0180497B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/06—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air into the fire bed
    • 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
    • F22B31/0023—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 in the 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D13/00—Heat-exchange apparatus using a fluidised bed

Definitions

  • Fluidized beds with heat exchangers are already known, particularly in the boiler sector.
  • An exchanger comprises at least two collectors, one at the inlet and one at the outlet of the fluid, between which extend heat exchange tubes.
  • Various arrangements have been proposed for these exchange tubes between the collectors.
  • Horizontal tubes have a larger contact surface with the fluidized bed than vertical tubes, but they are highly prone to erosion and corrosion.
  • Vertical tubes support erosion better than horizontal tubes and inclined tubes; they require a greater density of tubes but they also have the advantage of giving flexibility to the operation since the variation of the height of the fluidized bed makes it possible to significantly modify the height of immersion of these tubes in the fluidized bed.
  • a particularly convenient means for varying the height of the fluidized bed consists in acting on its expansion by means of the change of the fluidization speed by means of a complementary air blowing network independent of the main fluidizing air network. .
  • the outer pipe extends outside the device walls fluidized bed and is connected at its Extremists - Mite highest to the arrival of additional air, preferably at the lowest point of its section, while its lowest end is provided with a purge valve intended to allow the evacuation, when it is deemed desirable, of the ashes which have possibly penetrated into the intermediate volume.
  • the lower manifold 4 comprises an internal pipe 4A which is connected to the circuit 6 and an external pipe 4B which concentrically envelops the internal pipe 4A (FIG. 2) over the entire width of the hearth 3 and preferably up to beyond the walls of this last.
  • the external pipe 4B is provided in its lower part with nozzles 8, spaced apart by a suitable pitch, directed downwards, preferably located on two generators spaced 45 ° from the vertical, as shown Figure 2.
  • the external pipe 4B is connected, at its lowest point in cross section, outside the boiler 1, to an inlet of complementary air 10 comprising a valve for adjusting flow 10A.
  • This extreme part 9 of the external pipe 4B freely crosses, through a larger opening 9A, the wall 5 of the boiler 1 and it is joined to this wall by a flexible expansion joint 9B which provides sealing.
  • the interior pipe 4A ends with a bottom 4C inside the exterior pipe 4B.
  • This external pipe 4B allows the vertical tubes 7 to pass through an opening 11 larger than the external diameter of the latter, which allows them to expand; a conical cap 12, welded to the tube 7 covers the opening 11 to prevent the entry of the ashes by the latter.
  • FIG. 3 shows a variant according to which the external pipe 4B 'is off-center with respect to the interior pipe 4A '; in cross section, the profiles are intersecting and the intermediate volume 14 'has the profile of a crescent.
  • the latter has its largest thickness below the lower generatrix of the inner pipe 4A '; it is therefore further protected downwards whereas in the example illustrated in FIG. 2, it is also protected in all directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP85401905A 1984-10-02 1985-10-01 Wirbelschischtapparat mit Wärmetauscher und mit einem Einblasnetz für Sekundärluft Expired EP0180497B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401905T ATE36055T1 (de) 1984-10-02 1985-10-01 Wirbelschischtapparat mit waermetauscher und mit einem einblasnetz fuer sekundaerluft.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415105 1984-10-02
FR8415105A FR2571123B1 (fr) 1984-10-02 1984-10-02 Appareil a lit fluidise a echangeur de chaleur et a reseau de soufflage d'air complementaire

Publications (2)

Publication Number Publication Date
EP0180497A1 true EP0180497A1 (de) 1986-05-07
EP0180497B1 EP0180497B1 (de) 1988-07-27

Family

ID=9308263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401905A Expired EP0180497B1 (de) 1984-10-02 1985-10-01 Wirbelschischtapparat mit Wärmetauscher und mit einem Einblasnetz für Sekundärluft

Country Status (6)

Country Link
US (1) US4627387A (de)
EP (1) EP0180497B1 (de)
AT (1) ATE36055T1 (de)
DE (1) DE3564022D1 (de)
FI (1) FI853822L (de)
FR (1) FR2571123B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630159A1 (de) * 1986-09-04 1988-03-17 Steinmueller Gmbh L & C Wirbelschichtfeuerung mit mindestens einer schottenheizflaeche

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8968431B2 (en) * 2008-06-05 2015-03-03 Synthesis Energy Systems, Inc. Method and apparatus for cooling solid particles under high temperature and pressure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2819996A1 (de) * 1977-05-09 1978-11-23 Chambert Lars Axel Andreas M S Verfahren und reaktor zum durchfuehren von exothermen reaktionen, z.b. verbrennung zur dampferzeugung, in einer zirkulierenden wirbelschicht
GB2034868A (en) * 1978-10-27 1980-06-11 Smidth & Co As F L Boiler combustion chamber
DE2952091A1 (de) * 1979-12-22 1981-07-02 Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf Verfahren und vorrichtung zum einspeisen feinteiliger kohle in eine wirbelschichtfeuerung
EP0032798A2 (de) * 1980-01-16 1981-07-29 Devanney, John W. III Fluidbett-Verbrennungsvorrichtung und Verfahren zur Herstellung eines sich nicht zusammenballenden, mit Vanadium überzogenen Partikels
DE3027517A1 (de) * 1980-07-19 1982-02-25 Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf Wirbelschichtfeuerung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335785A (en) * 1980-11-19 1982-06-22 Hodges James L Apparatus and method for controlling heat transfer between a fluidized bed and tubes immersed therein
US4492184A (en) * 1983-10-13 1985-01-08 Exxon Research And Engineering Co. Solids cooling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2819996A1 (de) * 1977-05-09 1978-11-23 Chambert Lars Axel Andreas M S Verfahren und reaktor zum durchfuehren von exothermen reaktionen, z.b. verbrennung zur dampferzeugung, in einer zirkulierenden wirbelschicht
GB2034868A (en) * 1978-10-27 1980-06-11 Smidth & Co As F L Boiler combustion chamber
DE2952091A1 (de) * 1979-12-22 1981-07-02 Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf Verfahren und vorrichtung zum einspeisen feinteiliger kohle in eine wirbelschichtfeuerung
EP0032798A2 (de) * 1980-01-16 1981-07-29 Devanney, John W. III Fluidbett-Verbrennungsvorrichtung und Verfahren zur Herstellung eines sich nicht zusammenballenden, mit Vanadium überzogenen Partikels
DE3027517A1 (de) * 1980-07-19 1982-02-25 Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf Wirbelschichtfeuerung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3630159A1 (de) * 1986-09-04 1988-03-17 Steinmueller Gmbh L & C Wirbelschichtfeuerung mit mindestens einer schottenheizflaeche

Also Published As

Publication number Publication date
FR2571123A1 (fr) 1986-04-04
ATE36055T1 (de) 1988-08-15
US4627387A (en) 1986-12-09
FI853822A0 (fi) 1985-10-02
DE3564022D1 (en) 1988-09-01
FR2571123B1 (fr) 1986-11-28
FI853822L (fi) 1986-04-03
EP0180497B1 (de) 1988-07-27

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