EP0898116A1 - Vorrichtung zum Wärmeaustausch für einen Kessel mit zirkulierendem Wirbelbett - Google Patents

Vorrichtung zum Wärmeaustausch für einen Kessel mit zirkulierendem Wirbelbett Download PDF

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Publication number
EP0898116A1
EP0898116A1 EP98402064A EP98402064A EP0898116A1 EP 0898116 A1 EP0898116 A1 EP 0898116A1 EP 98402064 A EP98402064 A EP 98402064A EP 98402064 A EP98402064 A EP 98402064A EP 0898116 A1 EP0898116 A1 EP 0898116A1
Authority
EP
European Patent Office
Prior art keywords
exchanger
heat exchanger
beams
fluidized bed
particles
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
EP98402064A
Other languages
English (en)
French (fr)
Other versions
EP0898116B1 (de
Inventor
Jean-Claude Semedard
Pierre Gauville
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.)
Alstom Power Boiler SA
Original Assignee
GEC Alsthom Stein Industrie
Alstom Energy Systems 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 GEC Alsthom Stein Industrie, Alstom Energy Systems SA filed Critical GEC Alsthom Stein Industrie
Publication of EP0898116A1 publication Critical patent/EP0898116A1/de
Application granted granted Critical
Publication of EP0898116B1 publication Critical patent/EP0898116B1/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 or dispositions of combustion apparatus
    • F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • 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
    • 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 or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or 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 or dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
    • 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 or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0069—Systems therefor
    • 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 or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or 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

Definitions

  • the present invention relates to an exchange device thermal for a circulating fluidized bed boiler.
  • This second exchanger generally consists of several bundles of tubes, each comprising several coils arranged in parallel planes generally vertical. In these beams the fluid circulates coolant, usually water vapor, the whole being integrated in a rectangular container.
  • these beams are arranged from the as follows: from a wall of the tank we meet a first beam separated or not from this wall by a space without coil, then a second beam separated or not from the first beam by a space without coil; space between the first and the second beams can include a physical separation such as a low wall or a partition; the any additional beams are arranged so analogous so that the last beam is separated or not by a space without a coil on the wall of the tank opposite to the one next to the first beam.
  • the particle supply duct of the fluidized bed dense ET2 is therefore connected to a wall of the tank or to the space free between the first beam and this wall, the return particles at focus C occurring through the opposite wall or by an output connected to the free space between the last beam and this opposite wall.
  • the intense mixing of particles tends to homogenize the temperature in the tank, however, as the particles come out of the tank colder than they entered, this temperature is not the same in all respects.
  • the tubes located near the particle inlet receive more heat than those who are close to the exit.
  • the temperature dispersion is directly related to the size of the rectangular tray. So the temperature of the vapor produced by the first beam disposed at the entrance of the particles is greater than that of the last beam placed at the exit, which is not desirable.
  • the present invention thus relates to a device heat exchange which allows to obtain at the output bundles of the second exchanger at a temperature substantially uniform.
  • the heat exchange device includes a first heat exchanger followed by a second heat exchanger arranged in a dense fluidized bed, this second exchanger consisting of a plurality of tubular bundles arranged along the path of particles suspended in the dense fluidized bed.
  • the second exchanger comprising at least two power supplies located on either side of its center, these power supplies each receive a separate mixture of inlet fluid and outlet fluid from the first exchanger, so the temperature of the fluid entering each beams is an increasing function of its distance to the entry of the particles into this dense fluidized bed.
  • Differences in particle temperature in the bed dense fluidized are therefore compensated by the deviations of temperature of the fluids which supply the different bundles.
  • An efficient thermal solution when the second exchanger has more than two bundles, consists of providing a clean diet for each of these beams.
  • the beams are formed by coils of tubes arranged in vertical and parallel planes.
  • the particle path is perpendicular to the plans in which the coils appear.
  • a preferred embodiment consists in adopting bundles which are all identical.
  • At least one of the mixtures of the inlet and outlet fluids of the first exchanger is produced by control valves connected to the inlet and at the outlet of this first exchanger.
  • At least one of the mixtures of the inlet and outlet fluids of the first exchanger is produced by a connected control valve either at the entrance or at the exit of this exchanger.
  • the ET2 dense fluidized bed here takes the form of a tank rectangular. By abuse of language the whole bin will be considered the second heat exchanger.
  • ET2 tank is connected to an inlet pipe for 2E particles on one of its walls parallel to the planes coils and a 2S particle outlet line on the opposite wall. In this configuration, the flow of particles is therefore on average perpendicular to the planes of streamers.
  • the first beam F1 is placed on the entry side particles 2E and the third beam F3 on the side of the 2S output.
  • Each beam F1, F2, F3 has its own supply A1, A2, A3 (one input collector) while that there is a single BS outlet collector for all the beams.
  • each beam has its own output collector.
  • the supply A1, A2, A3 of each of the beams is connected via two control valves to the inlet and outlet of the first heat exchanger ET1. These valves are therefore regulated so that the temperatures at the output of the beams F1, F2, F3 are substantially equal.
  • valves could be replaced by a simple diaphragm.
  • Another achievement would consist in replacing the two valves associated with a supply by a three-way valve.
  • This collector located at the level of the first beam is connected via two control valves at the inlet and outlet of the first heat exchanger ET1, while its end is shown at the third beam is connected directly to the output of this exchanger ET1.
  • the BE input collector supplies could be deported and not appear exactly in his ends: what matters is having two sufficiently distant power supplies that are positioned on either side of the center of this collector.
  • this BE input collector is provided with a power supply additional arranged substantially in the middle, this feed receiving a mixture of fluids from the input and output of the first heat exchanger ET1.
  • the invention allows by means of organs to static or regulated settings to obtain different vapor beams having approximately the same temperature.
  • the invention obviously applies if there are two bundles or if there are more than three.
  • the invention also applies if any element is inserted between the ET2 dense fluidized bed and the conduit particles S2 of the separating member S (or else between the ET2B dense fluidized bed and the hearth extraction duct C if this ET2B dense fluidized bed is supplied by particles collected in this focus).
  • the invention is therefore not limited to the modes of realization described and it can be implemented well ways, if only by replacing a means with a equivalent means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Dairy Products (AREA)
EP98402064A 1997-08-18 1998-08-14 Vorrichtung zum Wärmeaustausch für einen Kessel mit zirkulierendem Wirbelbett Expired - Lifetime EP0898116B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710426A FR2767380B1 (fr) 1997-08-18 1997-08-18 Dispositif d'echange thermique pour une chaudiere a lit fluidise circulant
FR9710426 1997-08-18

Publications (2)

Publication Number Publication Date
EP0898116A1 true EP0898116A1 (de) 1999-02-24
EP0898116B1 EP0898116B1 (de) 2002-11-06

Family

ID=9510339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402064A Expired - Lifetime EP0898116B1 (de) 1997-08-18 1998-08-14 Vorrichtung zum Wärmeaustausch für einen Kessel mit zirkulierendem Wirbelbett

Country Status (10)

Country Link
US (1) US6206088B1 (de)
EP (1) EP0898116B1 (de)
JP (1) JPH11182801A (de)
KR (1) KR19990023667A (de)
DE (1) DE69809156T2 (de)
DK (1) DK0898116T3 (de)
ES (1) ES2183302T3 (de)
FR (1) FR2767380B1 (de)
PL (1) PL328052A1 (de)
ZA (1) ZA987424B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009076623A1 (en) * 2007-12-13 2009-06-18 Johnson Controls Technology Company Hvac&r system with individualized flow control
US9567876B2 (en) * 2009-06-05 2017-02-14 Gas Technology Institute Reactor system and solid fuel composite therefor
US20110277473A1 (en) * 2010-05-14 2011-11-17 Geoffrey Courtright Thermal Energy Transfer System
EP2735791B1 (de) * 2012-11-23 2015-07-29 Alstom Technology Ltd Kessel mit Flüssigbett-Wärmeaustauscher
CN116428573A (zh) * 2023-04-17 2023-07-14 江苏四方清洁能源装备制造有限公司 一种防腐蚀的恶臭处理余热锅炉

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254985A1 (de) * 1986-07-26 1988-02-03 L. & C. Steinmüller GmbH Dampferzeuger mit zirkulierender atmosphärischer oder druckaufgeladener Wirbelschichtfeuerung, sowie Verfahren zu seiner Regelung
EP0274637A1 (de) * 1986-12-11 1988-07-20 Siemens Aktiengesellschaft Dampferzeugeranlage mit einer zirkulierenden Wirbelschicht
EP0787946A1 (de) * 1996-01-31 1997-08-06 GEC ALSTHOM Stein Industrie Externe Wirbelschicht zur Ausrüstung einer zirkulierenden Wirbelschichtfeuerung

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA637569A (en) * 1962-03-06 C. Poole Myron Mobile homes
US2518270A (en) * 1945-03-29 1950-08-08 Standard Oil Dev Co Reactor
US2852545A (en) * 1954-02-15 1958-09-16 Frank J Jenny Method and apparatus for synthesizing hydrocarbons
US3013773A (en) * 1954-10-11 1961-12-19 Sinclair Refining Co Heat exchange apparatus
FR1259787A (fr) * 1960-06-14 1961-04-28 Schmidt Sche Heissdampf Procédé pour l'entretien des surfaces de chauffe des chaudières à chaleur d'échappement et dispositif pour sa mise en oeuvre
US3156538A (en) * 1960-10-26 1964-11-10 Shell Oil Co Cooling of bed reactors
NL274526A (de) * 1961-02-08 1900-01-01
US3814176A (en) * 1973-01-22 1974-06-04 R Seth Fixed-fluidized bed dry cooling tower
US4127161A (en) * 1977-03-02 1978-11-28 Energy Recycling Company Energy storage unit and system
US4515205A (en) * 1981-10-26 1985-05-07 General Electric Company Method for fluidized particle tray heat exchange
JPS6066099A (ja) * 1983-09-21 1985-04-16 Hitachi Ltd 多連式熱交換器の温度平衡制御方法
FR2559248B1 (fr) * 1984-02-03 1986-07-04 Creusot Loire Echangeur de chaleur a tubes
DE3433598A1 (de) * 1984-09-13 1986-03-20 Heinz Schilling KG, 4152 Kempen Verfahren zur praktischen anwendung des gegenstromprinzips fuer waermeaustauscher, luft/wasser, luft/luft oder sinngemaess fuer andere medien
JPH06100408B2 (ja) * 1988-09-09 1994-12-12 日本電気株式会社 冷却装置
SE468364B (sv) * 1990-04-30 1992-12-21 Abb Stal Ab Saett foer kylning av stoft som avskiljts fraan roekgaserna fraan en pfbc-anlaeggning
US5369597A (en) * 1992-12-21 1994-11-29 Bujak, Jr.; Walter E. System for controlling heating or cooling capacity in heating or air conditioning systems
FR2761147B1 (fr) * 1997-03-24 1999-05-14 Gec Alsthom Stein Ind Echangeur de chaleur a encombrement reduit
US5954000A (en) * 1997-09-22 1999-09-21 Combustion Engineering, Inc. Fluid bed ash cooler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254985A1 (de) * 1986-07-26 1988-02-03 L. & C. Steinmüller GmbH Dampferzeuger mit zirkulierender atmosphärischer oder druckaufgeladener Wirbelschichtfeuerung, sowie Verfahren zu seiner Regelung
EP0274637A1 (de) * 1986-12-11 1988-07-20 Siemens Aktiengesellschaft Dampferzeugeranlage mit einer zirkulierenden Wirbelschicht
EP0787946A1 (de) * 1996-01-31 1997-08-06 GEC ALSTHOM Stein Industrie Externe Wirbelschicht zur Ausrüstung einer zirkulierenden Wirbelschichtfeuerung

Also Published As

Publication number Publication date
US6206088B1 (en) 2001-03-27
DE69809156D1 (de) 2002-12-12
ES2183302T3 (es) 2003-03-16
EP0898116B1 (de) 2002-11-06
KR19990023667A (ko) 1999-03-25
FR2767380B1 (fr) 1999-09-24
DK0898116T3 (da) 2003-03-10
DE69809156T2 (de) 2003-07-17
PL328052A1 (en) 1999-03-01
JPH11182801A (ja) 1999-07-06
FR2767380A1 (fr) 1999-02-19
ZA987424B (en) 1999-02-22

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