EP0257254A1 - Procédé pour la combustion des matières contenant du carbone dans un lit fluidisé circulant et installation de combustion à lit fluidisé pour la mise en oeuvre du procédé - Google Patents

Procédé pour la combustion des matières contenant du carbone dans un lit fluidisé circulant et installation de combustion à lit fluidisé pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0257254A1
EP0257254A1 EP87109779A EP87109779A EP0257254A1 EP 0257254 A1 EP0257254 A1 EP 0257254A1 EP 87109779 A EP87109779 A EP 87109779A EP 87109779 A EP87109779 A EP 87109779A EP 0257254 A1 EP0257254 A1 EP 0257254A1
Authority
EP
European Patent Office
Prior art keywords
separator
fluidized bed
bed reactor
flue
circulation system
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.)
Withdrawn
Application number
EP87109779A
Other languages
German (de)
English (en)
Inventor
Ernst Krieger
Karl Ihne
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.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
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 L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Publication of EP0257254A1 publication Critical patent/EP0257254A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • F22B31/0084—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 with recirculation of separated solids or with cooling of the bed particles outside the combustion bed

Definitions

  • the invention relates to a method of the type mentioned in the preamble of claim 1.
  • Such a method is known for example from DE-PS 25 39 546.
  • the combustion is carried out in such a way that a temperature in the range of 850 ° C. is maintained in the fluidized bed reactor so that the emission values required when operating such a system can be maintained.
  • the exhaust gases also leave the separator and are supplied to the cooling surfaces provided for removing heat from the clean gases.
  • the process-related flue gas temperature of approx. 850 ° C inevitably results in the supply of heat for the heat recovery device downstream in the separator.
  • the waste heat removal device usually consists of a convection train with feed water preheating, evaporator, superheater and / or reheater heating surfaces.
  • This object is achieved in that a partial solids flow taken from the circulation system is mixed with the flue gases or exhaust gases emerging from the separator in front of the heating surfaces for the removal of heat from the flue gases.
  • the amount of heat available after the separator is increased without a change in the flue gas temperature occurring.
  • the partial solids flow together with the exhaust gas is removed from the circulation system between the fluidized bed reactor and the separator and admixed with the clean gas flow after the separator.
  • the required bypass quantity of the dust-laden flue gas is regulated and thus adjusted to the steam temperature required in each case.
  • bypass flow Although the routing of a bypass flow is preferred, it is also possible to supply the additional amount of heat required for heat dissipation to the heating surfaces downstream of the separator by injecting ash into the pure smoke gas flow, which e.g. can be removed from the return line.
  • the solid partial stream supplied to the flue gas is separated from the flue gas after it has cooled and is returned to the fluidized bed reactor.
  • a temperature range of e.g. At 300 ° C a desired reduction in the fluidized bed temperature is achieved when it is returned to the fluidized bed.
  • the invention is also directed to a fluidized bed combustion plant for carrying out the method according to the invention.
  • a fluidized bed combustion system with a circulation system, at least consisting of a fluidized bed reactor with at least one heating surface, one of these downstream separators and a return line from the separator to the fluidized bed reactor and a waste heat removal device downstream of the flue gas side.
  • the fluidized bed combustion system according to the invention is characterized in that a device for removing a partial solids flow from the circulation system and a device for admixing the partial solids flow into the flue gases leaving the separator are provided. Further subclaims are directed to preferred configurations of the fluidized bed combustion system.
  • the steam generator includes a fluidized bed reactor (1) with a vortex combustion chamber (2) which is delimited by a wall covering made of evaporator tubes (3).
  • An ash separator (5) is connected to the swirl combustion chamber via a raw gas duct (4).
  • the solids discharge of the separator (5) is connected to the swirl combustion chamber via a return line (6), while it is connected on the clean gas side via a connecting channel (7) to a waste gas flue (8) in which several heating surfaces (9) are arranged.
  • the separator (5) is assigned a flue gas bypass line (10) connecting the swirl combustion chamber (2) to the clean gas channel (7), in which a control device (11), shown as a flap in FIG Motor (12) can be adjusted.
  • the flue gas leaving the flue gas flue (8) is passed through a separator (13), the solids discharge of which is connected to the swirl combustion chamber (2) via a line (14).
  • the gas leaving the separator (13) is fed via an air preheater (15), a dust filter (16) and from there to the chimney (not shown).
  • a plate (11 ⁇ ) which can be pushed into the line (10) is provided as the control device.
  • flow baffles (10a, 7a) are preferably provided both in the end section of the line (10) and in the mixing region of the line (7).
  • the embodiment according to FIG. 3 differs from the embodiment according to FIG. 2 in that the separator (13 ⁇ ) is arranged between the air preheater (15) and the dust filter (16).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
EP87109779A 1986-07-31 1987-07-07 Procédé pour la combustion des matières contenant du carbone dans un lit fluidisé circulant et installation de combustion à lit fluidisé pour la mise en oeuvre du procédé Withdrawn EP0257254A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3625992 1986-07-31
DE19863625992 DE3625992A1 (de) 1986-07-31 1986-07-31 Verfahren zum verbrennen von kohlenstoffhaltigen materialien in einer zirkulierenden wirbelschicht und wirbelschichtfeuerungsanlage zur durchfuehrung des verfahrens

Publications (1)

Publication Number Publication Date
EP0257254A1 true EP0257254A1 (fr) 1988-03-02

Family

ID=6306436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109779A Withdrawn EP0257254A1 (fr) 1986-07-31 1987-07-07 Procédé pour la combustion des matières contenant du carbone dans un lit fluidisé circulant et installation de combustion à lit fluidisé pour la mise en oeuvre du procédé

Country Status (3)

Country Link
US (1) US4741290A (fr)
EP (1) EP0257254A1 (fr)
DE (1) DE3625992A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008917A1 (fr) * 1989-01-24 1990-08-09 A. Ahlstrom Corporation Systeme et methode pour la commande de temperature de vapeur de rechauffeur dans des chaudieres a couche fluidifiee
EP0444927A2 (fr) * 1990-03-01 1991-09-04 Foster Wheeler Energy Corporation Température améliorée de la vapeur dans un lit fluidisé
CN1039936C (zh) * 1989-08-18 1998-09-23 福斯特·惠勒能源公司 包含一个蒸汽冷却的旋风分离的流态床蒸汽发生系统

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI873735A0 (fi) * 1987-08-28 1987-08-28 Ahlstroem Oy Foerfarande och anordning foer foergasning av fast kolhaltigt material.
FR2652817B1 (fr) * 1989-10-06 1993-11-26 Procedes Petroliers Petrochimiqu Procede et installation de vapocraquage d'hydrocarbures, a recyclage de particules solides erosives.
SE466814B (sv) * 1989-06-01 1992-04-06 Kvaerner Generator Ab Anordning foer nedbrytande av gaser alstrade vid foerbraenning vid ungefaer 850 grader c av fasta braenslen i en fluidbaedd
US5133950A (en) * 1990-04-17 1992-07-28 A. Ahlstrom Corporation Reducing N2 O emissions when burning nitrogen-containing fuels in fluidized bed reactors
US5070821A (en) * 1990-07-05 1991-12-10 Virr Michael J Rotary fluid bed gasifier for boilers or furnaces
DE4235412A1 (de) * 1992-10-21 1994-04-28 Metallgesellschaft Ag Verfahren zum Vergasen von brennbare Bestandteile enthaltenden Abfallstoffen
US5339774A (en) * 1993-07-06 1994-08-23 Foster Wheeler Energy Corporation Fluidized bed steam generation system and method of using recycled flue gases to assist in passing loopseal solids
DE4409056C2 (de) * 1994-03-11 1998-03-26 Ver Energiewerke Ag Verfahren und Anordnung zum Vortrocknen von gebrochener Rohbraunkohle für eine druckaufgeladene Wirbelschichtfeuerung
DE69504524T2 (de) * 1994-08-23 1999-04-15 Foster Wheeler Energia Oy Methode zum betreiben eines wirbelbettreaktorsystems, und ein solches system
US5469698A (en) * 1994-08-25 1995-11-28 Foster Wheeler Usa Corporation Pressurized circulating fluidized bed reactor combined cycle power generation system
US5570645A (en) * 1995-02-06 1996-11-05 Foster Wheeler Energy Corporation Fluidized bed system and method of operating same utilizing an external heat exchanger
US7287477B2 (en) * 2004-10-13 2007-10-30 Foster Wheeler Energy Corporation Cyclone bypass for a circulating fluidized bed reactor
RU2455561C1 (ru) * 2010-10-22 2012-07-10 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Северный (Арктический) федеральный университет" (С(А)ФУ) Слое-вихревая топка для сжигания древесных отходов
US20140065559A1 (en) * 2012-09-06 2014-03-06 Alstom Technology Ltd. Pressurized oxy-combustion power boiler and power plant and method of operating the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1893794U (de) * 1964-03-07 1964-05-27 Walther & Cie Ag Vielzellenstaubabscheider fuer heisse, staubhaltige, korrosive gase.
GB2034868A (en) * 1978-10-27 1980-06-11 Smidth & Co As F L Boiler combustion chamber

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539546C3 (de) * 1975-09-05 1985-10-24 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Verbrennung kohlenstoffhaltiger Materialien
DE2624302A1 (de) * 1976-05-31 1977-12-22 Metallgesellschaft Ag Verfahren zur durchfuehrung exothermer prozesse
US4419964A (en) * 1979-10-26 1983-12-13 F. L. Smidth & Co. Combustion plant
FR2517419A1 (fr) * 1981-11-27 1983-06-03 Creusot Loire Procede et installation de recuperation de chaleur, notamment pour le refroidissement de cendres
US4522154A (en) * 1982-03-01 1985-06-11 Pyropower Corporation Fluidized bed combustion boiler
CA1225292A (fr) * 1982-03-15 1987-08-11 Lars A. Stromberg Chaudiere a lit fluidise a chauffe rapide, et regulation de son fonctionnement
DE3525676A1 (de) * 1985-07-18 1987-01-22 Kraftwerk Union Ag Dampferzeuger
US4682567A (en) * 1986-05-19 1987-07-28 Foster Wheeler Energy Corporation Fluidized bed steam generator and method of generating steam including a separate recycle bed

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1893794U (de) * 1964-03-07 1964-05-27 Walther & Cie Ag Vielzellenstaubabscheider fuer heisse, staubhaltige, korrosive gase.
GB2034868A (en) * 1978-10-27 1980-06-11 Smidth & Co As F L Boiler combustion chamber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008917A1 (fr) * 1989-01-24 1990-08-09 A. Ahlstrom Corporation Systeme et methode pour la commande de temperature de vapeur de rechauffeur dans des chaudieres a couche fluidifiee
AU639437B2 (en) * 1989-01-24 1993-07-29 Foster Wheeler Energia Oy System and method for reheat steam temperature control in circulating fluidized bed boilers
CN1039936C (zh) * 1989-08-18 1998-09-23 福斯特·惠勒能源公司 包含一个蒸汽冷却的旋风分离的流态床蒸汽发生系统
EP0444927A2 (fr) * 1990-03-01 1991-09-04 Foster Wheeler Energy Corporation Température améliorée de la vapeur dans un lit fluidisé
EP0444927A3 (en) * 1990-03-01 1992-05-06 Foster Wheeler Energy Corporation Fluidized bed steam temperature enhancement system

Also Published As

Publication number Publication date
US4741290A (en) 1988-05-03
DE3625992A1 (de) 1988-02-04
DE3625992C2 (fr) 1992-10-22

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Inventor name: IHNE, KARL