EP1068475B1 - Verfahren zum verbrennen oder vergasen in der zirkulierenden wirbelschicht - Google Patents

Verfahren zum verbrennen oder vergasen in der zirkulierenden wirbelschicht Download PDF

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Publication number
EP1068475B1
EP1068475B1 EP00901114A EP00901114A EP1068475B1 EP 1068475 B1 EP1068475 B1 EP 1068475B1 EP 00901114 A EP00901114 A EP 00901114A EP 00901114 A EP00901114 A EP 00901114A EP 1068475 B1 EP1068475 B1 EP 1068475B1
Authority
EP
European Patent Office
Prior art keywords
solids
chamber
dechlorination
silicates
separator
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.)
Expired - Lifetime
Application number
EP00901114A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1068475A1 (de
Inventor
Werner-Friedrich Staab
Wolfgang Pauly
Niels Henriksen
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.)
Doosan Lentjes GmbH
Original Assignee
MG Technologies AG
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 MG Technologies AG filed Critical MG Technologies AG
Publication of EP1068475A1 publication Critical patent/EP1068475A1/de
Application granted granted Critical
Publication of EP1068475B1 publication Critical patent/EP1068475B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/48—Preventing corrosion
    • 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
    • F23C10/04—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 the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/08—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 the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
    • F23C10/10—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 the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised 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 
    • F23C2206/00—Fluidised bed combustion
    • F23C2206/10—Circulating fluidised bed
    • F23C2206/103—Cooling recirculating particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/50—Fluidised bed furnace
    • F23G2203/501—Fluidised bed furnace with external recirculation of entrained bed material

Definitions

  • the invention relates to a method for burning or Gasification of material containing flammable components in the circulating fluidized bed, which is a vortex chamber for combustion or gasification, one with the top Area of the vortex chamber connected solid matter separator, a return of those occurring in the solids separator Solids to the swirl chamber and a cooling device for indirect cooling of solids by Solid matter separators come, wherein the Cooling device contains several fluidized beds by the Solids are migrated one after the other.
  • a method of this type is known from WO 97/46829 A1.
  • the cooling device is an uncooled fluidized bed upstream, its exhaust gases directly into the combustion be performed. Through this measure the Chloride concentration in the solids to be cooled be reduced.
  • the chlorides are for aggressive Corrosion attacks on the cooling devices responsible.
  • the known blowing through the fluidized bed is mainly in unfavorable cases, the chloride concentration is not suitable in the solids to be cooled sufficiently to reduce to ensure the desired protection against corrosion.
  • corrosive B KCl caking Cooling tubes.
  • the reactivity of the silicates, aluminum silicates or the activated silicates is essentially based on the hydroxyl groups on the silicon.
  • These additives bind the alkalis and metals in the hot solids, so that chlorine is released as HCl, which is less corrosive than z.
  • These solid additives are usually added to the fluidized bed in powder form, the mean grain sizes d 50 being approximately in the range from 50 to 500 ⁇ m. It is also possible for the solid additives to be introduced early into the hot solid feed line.
  • Gaseous SO 2 is particularly suitable for reacting with vaporous alkali chloride or metal chloride and thereby forming sulfates and HCl in the presence of molecular oxygen.
  • the released HCl is driven out of the dechlorination chamber with the fluidizing gas.
  • Sulphates are not or hardly corrosive and can with the ash removed from the process z. B. be deposited.
  • SO 2 can be added to the gas space in a molar concentration of 0.25 to about 6 times the concentration of the released HCl.
  • the SO 2 can also be introduced by sulfur-containing materials, which release at the high temperatures in the dechlorination chamber SO 2 or release in an oxidizing atmosphere SO 2.
  • the fluidized bed in the dechlorination chamber can be with or without indirect cooling work; usually you become this Keep the fluidized bed free of indirect cooling.
  • the other fluidized beds contained in the cooling device by flowed through liquid, gaseous or vaporous coolants Heat exchanger. By eliminating or at least May reduce the corrosiveness of hot solids you keep the temperature high in the hottest fluidized bed what z. B. steam overheating benefits.
  • the material to be burned or gasified can be of different types.
  • B. are coal, lignite, biomass (e.g. wood or straw), solid and / or liquid waste or sewage sludge, several of these materials can also be mixed.
  • the material to be burned or gasified is given through the line (1) into the swirl chamber (2) leading to a circulating fluidized bed. With the top area the vortex chamber (2) is therefore through the channel (3) Solid separator (4) connected, which is z. B. um a cyclone. Partially dedusted gas is drawn in line (5) and it does not become one shown, known cooling and cleaning respectively. Part of the accumulating in the separator (4) Solids is through the return line (6) via a Siphon (7) led back into the swirl chamber (2). The Flow in the siphon is through a fluidizing gas stream controlled, which is introduced in line (7a).
  • the swirl chamber (2) In the lower area of the swirl chamber (2) there is a Grate (8), from which oxygen-containing fluidizing gas flows up into the chamber.
  • the fluidizing gas comes from line (9) and first enters one Distribution chamber (10) before it flows through the grate (8). Ash is removed from the chamber (2) through the extractor (11) away.
  • the material to be burned or gasified can are different types of granular solids combustible components, liquid or pasty substances may be added.
  • the temperatures in the Swirl chamber (2) are usually in the range of 700 up to 1100 ° C and preferably 800 to 1050 ° C.
  • the Eddy gas is constantly a part of the solids through the Channel (3) led to the separator (4).
  • the amount of Solids, which one through the return line (6) in the Cyclic chamber (2) returns, is usually hourly at least 5 times the amount of solids that is in the swirl chamber (2) on average.
  • the temperatures range from 700 to 1100 ° C and mostly have 800 to 1050 ° C, are by the Line (14) fed to a cooling device (15).
  • the cooling device (15) has a Dechlorination chamber (16) and three cooling chambers (16a), (16b) and (16c).
  • the cooling chambers contain heat exchangers (17) and (18) for indirect cooling of the solids there as fluidized beds (21), (22) and (23) are present.
  • Weir-like chamber walls are located between the beds (21a), (22a) and (23a), fluidizing gas is through Lines (21b), (22b) and (23b) are supplied.
  • Fluidizing gas can e.g. B. is air.
  • the dechlorination chamber (16) has a feed line (20a) for fluidizing gas (e.g. air), the gas from which a grate (20b) flows into a fluidized bed (20) and then first in the one above the fluidized bed (20) Gas space (25) arrives.
  • a gas room is also above the other fluidized beds (21), (22) and (23).
  • the Gas is discharged through a manifold (26), which opens into the swirl chamber (2) and the exhaust gas of the cooled fluidized beds (21), (22) and (23) with it.
  • the dechlorination chamber (16) can have its own Have gas discharge line (26a), shown in dashed lines is.
  • the dechlorination chamber (16) is provided with a feed line (27) for solid additives and with a feed line (28) for gaseous additives. All or part of the gaseous additives can also be supplied through line (28a).
  • Solid additives are silicates, aluminum silicates and / or activated silicates or mixtures which contain at least one of these additives.
  • the gaseous additive used is gaseous SO 2 or other sulfur-containing materials which release SO 2 in an oxidizing atmosphere. It is important that the content of alkali and metal chlorides which are brought in with the hot solids through line (14) is largely reduced by the additives.
  • the solids which leave the dechlorination chamber (16) via the weir-like wall (21a) and pass into the fluidized bed (21) have a maximum of 20% of the alkali metal and metal chloride content present in the solids of the line (14) is present.
  • the chilled solids contained in the cooling device (15) have partially given off their heat, being used as a coolant z.
  • B. boiler feed water or steam is used, through the line (30) back into the vortex chamber (2) performed. Some of the chilled solids can also removed from the process what is in the drawing is not shown.
  • the chamber (16) is fed as a solid additive 23 kg / h of the activated silicate ICA 2000 (manufacturer: ICA Chemie, A-3384 Gross-Sierning) and as a gaseous additive SO 2 through lines (27) and (28) , a concentration of 30 ppm SO 2 being established in the gas space (25).
  • the ash cooled to 720 ° C. is drawn off through line (30) and led back into the swirl chamber (2).
  • the treatment in the dechlorination chamber (16) reduces the chlorine content in the solids to 10% of the initial content.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Incineration Of Waste (AREA)
  • Chimneys And Flues (AREA)
EP00901114A 1999-01-29 2000-01-19 Verfahren zum verbrennen oder vergasen in der zirkulierenden wirbelschicht Expired - Lifetime EP1068475B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19903510 1999-01-29
DE19903510A DE19903510C2 (de) 1999-01-29 1999-01-29 Verfahren zum Verbrennen oder Vergasen in der zirkulierenden Wirbelschicht
PCT/EP2000/000378 WO2000045091A1 (de) 1999-01-29 2000-01-19 Verfahren zum verbrennen oder vergasen in der zirkulierenden wirbelschicht

Publications (2)

Publication Number Publication Date
EP1068475A1 EP1068475A1 (de) 2001-01-17
EP1068475B1 true EP1068475B1 (de) 2002-11-13

Family

ID=7895763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00901114A Expired - Lifetime EP1068475B1 (de) 1999-01-29 2000-01-19 Verfahren zum verbrennen oder vergasen in der zirkulierenden wirbelschicht

Country Status (14)

Country Link
US (1) US6649135B1 (ja)
EP (1) EP1068475B1 (ja)
JP (1) JP4443769B2 (ja)
AT (1) ATE227825T1 (ja)
AU (1) AU763820B2 (ja)
CZ (1) CZ297653B6 (ja)
DE (2) DE19903510C2 (ja)
DK (1) DK1068475T3 (ja)
ES (1) ES2185559T3 (ja)
HU (1) HU222149B1 (ja)
PL (1) PL191977B1 (ja)
PT (1) PT1068475E (ja)
TW (1) TW414844B (ja)
WO (1) WO2000045091A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520927C2 (sv) 2001-01-26 2003-09-16 Vattenfall Ab Förfarande vid drift av en värmeproducerande anläggning för förbränning av klorinnehållande bränslen
TW571049B (en) * 2001-11-12 2004-01-11 Ishikawajima Harima Heavy Ind Circulating fluidized bed boiler
DE102005005796A1 (de) * 2005-02-09 2006-08-17 Applikations- Und Technikzentrum Für Energieverfahrens-, Umwelt- Und Strömungstechnik (Atz-Evus) Verfahren und Vorrichtung zur thermochemischen Umsetzung eines Brennstoffs
DE102007056580B3 (de) * 2007-11-23 2009-04-02 Forschungszentrum Karlsruhe Gmbh Verfahren und Vorrichtung zur Flugstrom-Sulfatierung von Rauchgasinhaltsstoffen
DE102007062390B3 (de) * 2007-12-22 2009-04-02 Michael Kaden Wirbelschichtfeuerung
KR101586423B1 (ko) * 2013-12-27 2016-01-18 포스코에너지 주식회사 이중 유동층 간접 가스화기
FI20225235A1 (en) * 2022-03-16 2023-09-17 Valmet Technologies Oy Fluidized bed boiler and method for operating a circulating fluidized bed boiler

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563118B1 (fr) * 1984-04-20 1987-04-30 Creusot Loire Procede et installation de traitement de matiere en lit fluidise circulant
DE3640908A1 (de) * 1986-11-29 1988-06-01 Metallgesellschaft Ag Verfahren zum verbrennen salzreicher kohle
US4709662A (en) * 1987-01-20 1987-12-01 Riley Stoker Corporation Fluidized bed heat generator and method of operation
DE3712801A1 (de) * 1987-04-15 1988-11-03 Babcock Werke Ag Verfahren zum verfeuern von insb. salzhaltiger braunkohle
DE4102959A1 (de) * 1991-02-01 1992-08-13 Metallgesellschaft Ag Verfahren zum verbrennen von kohle in der zirkulierenden wirbelschicht
US5220112A (en) * 1991-09-10 1993-06-15 Air Products And Chemicals, Inc. Fixation of heavy metals in municipal solid waste incinerator ash
US5245120A (en) * 1991-12-27 1993-09-14 Physical Sciences, Inc. Process for treating metal-contaminated materials
FR2701223B1 (fr) * 1993-02-09 1995-04-28 Cnim Procédé de traitement des résidus issus de l'épuration des fumées émises lors de l'incinération des déchets ménagers et/ou industriels, installation pour l'exécution de ce procédé, et produits obtenus par ce procédé et cette installation.
FI102316B1 (fi) * 1996-06-05 1998-11-13 Foster Wheeler Energia Oy Menetelmä ja laite kiintoainesuspensioiden haitallisten komponenttien lämmönsiirtopinnoille aiheuttaman korroosion vähentämiseksi
DE19802274C2 (de) * 1998-01-22 1999-09-30 Rudolf Kruppa Beeinflussung der chemischen Vorgänge bei der thermischen Behandlung bzw. Verbrennung von Hausmüll oder hausmüllähnlichem Gewerbemüll in Müllverbrennungsanlagen (MVA) mittels Schwefel oder schwefelhaltiger Zusätze mit dem Ziel verminderter Chlor-/Chloridkorrision

Also Published As

Publication number Publication date
AU763820B2 (en) 2003-07-31
HU222149B1 (hu) 2003-04-28
WO2000045091A1 (de) 2000-08-03
DK1068475T3 (da) 2003-03-10
ES2185559T3 (es) 2003-05-01
DE19903510A1 (de) 2000-08-03
ATE227825T1 (de) 2002-11-15
HUP0102841A2 (hu) 2001-12-28
CZ297653B6 (cs) 2007-02-21
DE19903510C2 (de) 2002-03-07
JP2002539402A (ja) 2002-11-19
TW414844B (en) 2000-12-11
US6649135B1 (en) 2003-11-18
CZ20003568A3 (cs) 2002-02-13
PL191977B1 (pl) 2006-07-31
PT1068475E (pt) 2003-03-31
EP1068475A1 (de) 2001-01-17
JP4443769B2 (ja) 2010-03-31
DE50000746D1 (de) 2002-12-19
PL343119A1 (en) 2001-07-30
AU2109400A (en) 2000-08-18
HUP0102841A3 (en) 2002-03-28

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