EP0080399B1 - Installation de chaudière à combustible solide - Google Patents

Installation de chaudière à combustible solide Download PDF

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Publication number
EP0080399B1
EP0080399B1 EP82402063A EP82402063A EP0080399B1 EP 0080399 B1 EP0080399 B1 EP 0080399B1 EP 82402063 A EP82402063 A EP 82402063A EP 82402063 A EP82402063 A EP 82402063A EP 0080399 B1 EP0080399 B1 EP 0080399B1
Authority
EP
European Patent Office
Prior art keywords
boiler
installation according
sulphurizing
burner
installation
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
Application number
EP82402063A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080399A1 (fr
Inventor
Raoul Teraube
Paul Cosar
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock 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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to AT82402063T priority Critical patent/ATE12425T1/de
Publication of EP0080399A1 publication Critical patent/EP0080399A1/fr
Application granted granted Critical
Publication of EP0080399B1 publication Critical patent/EP0080399B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B90/00—Combustion methods not related to a particular type of apparatus
    • F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
    • F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
    • F23B1/22—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using travelling grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B5/00—Combustion apparatus with arrangements for burning uncombusted material from primary combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators

Definitions

  • the present invention relates to a solid fuel boiler, and more particularly to a coal boiler or any other solid fuel, shale for example, having a significantly high sulfur content.
  • DE-C-960 305 describes a solid fuel boiler installation comprising a hearth constituted by a support above which the fuel is discharged, primary air being blown up and down through said support, and a body boiler surmounting said hearth of which it is integral, the hearth constituting a gasifier, the boiler body being divided into two superposed parts, respectively lower and upper, by a common transverse wall provided with orifices with adjustable opening, a circuit being provided for supplying at least one burner arranged at the base of the upper part, with gas leaving the lower part, said upper part being simultaneously supplied with secondary combustion air, and said circuit comprising cleaning means.
  • the object of the invention is above all to avoid the abovementioned drawbacks, in the context of a boiler installation comprising a fluidized bed gasifier.
  • the invention more specifically relates to a solid fuel boiler installation comprising a fluidized bed hearth constituted by a fluidization support above which the fuel is poured, primary air being blown through said support, a body of boiler with tubular walls surmounting said hearth of which it is integral, and a secondary air inlet provided in said boiler body, characterized in that the fluidized bed hearth constitutes a gasifier, in that the boiler body is divided into two parts superimposed, respectively lower and upper, by a common transverse wall, and in that there is provided a circuit for supplying at least one burner arranged at the base of the upper part, with gas leaving the lower part, said burner being simultaneously connected to said secondary air inlet, and said circuit comprising dust removal and desulfurization means.
  • the fluidization support is constituted by a mobile mechanical grid ensuring the distribution of the fluidization air and the evacuation of bottom ash.
  • the transverse wall is a tubular wall formed by folds of the vertical tubes of the boiler body.
  • the dedusting means advantageously consists of a cyclone capable of separating the flue gases from the hearth from the gas, said takeoffs being recycled into said hearth.
  • the desulphurization means advantageously include a station for injecting a desulphurizing agent into the circuit, downstream of the dedusting cyclone, a circuit section of a length sufficient to allow the gas desulphurization reaction to be ensured, and a cyclone capable of separating the residues from the desulfurization reaction from the gas.
  • the section of the circuit corresponding to the gas desulfurization reaction has the shape of an inverted U.
  • a fan is provided to supply air, on the one hand the fluidized bed hearth, on the other hand the burner.
  • An air heater is also provided at the outlet of the fan, said air heater being traversed by the fumes discharged by the boiler.
  • bypass piping allowing direct injection of part of the air supplied by the fan into the lower part of the boiler body.
  • cyclones for dedusting and for separating desulfurization residues integral with the supply columns of the boiler, form therewith an assembly suspended from the frame of the installation, at the same level as the boiler body also suspended from said frame.
  • the eight cyclones are arranged around said body and mounted on a support in the form of a frame surrounding said body and fixed to the supply columns of the boiler with which it forms an assembly suspended under the same conditions as above.
  • FIG 1 we see a fluidized bed hearth surmounted by a boiler body 1 with tubular walls.
  • the body 1 has two superimposed parts, respectively lower 1a and upper 1b. These two parts are separated by a common transverse wall 2.
  • Said wall is advantageously constituted by folds of the vertical tubes of the boiler body 1.
  • the fluidized bed hearth essentially comprises a fluidization support 3 integral with the boiler body 1 above which the fuel, coal for example, is poured out, through a chute 4, and under which the primary fluidization air supplied by a fan 5 then heated by a heater 6.
  • the fluidization support 3 is constituted by a movable mechanical grid, substantially inclined, capable of ensuring the distribution of air and the evacuation of bottom ash through outlet 7.
  • the gas produced leaves the fluidized bed hearth at a temperature of the order of 1200 °. It passes through part 1a of the boiler body in order to be evacuated therefrom by the piping 8, substantially below the wall 2, at a temperature of around 900 ° which is particularly favorable for its desulphurization. Part 1 adds, in this respect, the role of a cooling chamber.
  • the piping 8 brings the gas to a dedusting cyclone 9 capable of separating from the gas the flows from the fluidized bed essentially constituted by unburnt materials and ashes, the latter being normally evacuated with clinkers. These flights collect at the bottom of the cyclone 9 from where they are recycled into the fluidized bed by the pipe 10. The dedusted gas is then desulfurized.
  • an injection station 11 for a desulfurizing agent preferably based on C0 3 Ca in the form of dolomite, limestone or chalk for example.
  • the desulfurization reaction takes place along the piping 12 of the gas circuit.
  • This piping must have a sufficient length to ensure as complete desulfurization as possible. It advantageously has the shape of an inverted U whose descending branch brings the gas to the inlet of cyclone 13 which ensures the separation of the residues from the desulfurization reaction: CaS, CaO and C0 3 Ca in excess for example.
  • the clean and desulphurized gas leaves the cyclone 13 via the pipe 14 which brings it to a burner 15 arranged at the base of the upper part 1b of the boiler body.
  • the burner 15 is simultaneously supplied with secondary combustion air by the pipe 16 which is connected at 17 to the pipe 18 for supplying primary fluidization air.
  • the upper part 1b constitutes a conventional boiler combustion chamber. The fumes leaving this chamber heat the superheater 19 and economizer 20 bundles then the air passing through the heater 6.
  • a pipe 21 connected to the pipe 18, for example upstream of the point 17 makes it possible, if necessary, to directly bring a certain amount of air into the lower part 1a. This makes it possible to modify the quantity of secondary air admitted to the burner 15. This possibility is particularly advantageous when the installation operates at reduced speed, to achieve partial secondary combustion in part 1 of the boiler body, having the effect of limiting the drop in temperature of the gas leaving by 1 a and not to stray too far from the temperature range favorable to the desulfurization of the gas.
  • FIGS 2 and 3 illustrate the installation of the installation. For reasons of clarity, the outline of the boiler 1 has simply been traced and the various elements of the air circuit have been removed.
  • the frame of the installation comprises four posts such as 22 at the top of which are mounted horizontal beams, such as 23, supporting spacers 24 to which are suspended all the elements of the boiler (tank, collectors, walls) as well as the support 25 of cyclones 9 and 13, via supply columns, such as 27, of the boiler which are at least two in number.
  • These columns 27 are supplied with water at their upper part by pipes such as 28 coming from the balloon 30 of the boiler. They in turn supply the base of the boiler via the pipes 29.
  • the advantage of this support method comes from the fact that, on the one hand, the supply columns 27, traversed by the water from the boiler , are practically at the same temperature as the tubes which constitute the walls of the body 1 of the boiler, and that on the other hand, these columns, suspended from the same support (spacers 24) as the boiler, expand downwards from the same way as this one, the origins of the dilations being practically located in the same horizontal plane.
  • FIGS. 4 and 5 relate to a particular embodiment according to which the lower part 1a of the boiler body has four gas outlets. Each gas outlet is then associated with a complete circuit going from said outlet to the corresponding burner.
  • the components of each circuit include a pipe such as 8, a dedusting cyclone such as 9, a desulfurization pipe such as 12, a cyclone for separating desulfurization residues such as 13, a pipe such as 14 and a burner such that 15.
  • FIGS. 4 and 5 assigned the indices a, b, c, and d.
  • each outlet pipe 8c for example is connected to an associated burner 15c which is arranged on the adjacent face of the tubular wall of the boiler and not on the same face.
  • FIG. 5 illustrates the supports of the eight cyclones mounted on a frame 26 surrounding the boiler body and suspended like the latter, from all of the supports 24 via the supply columns 27 on which it is hung.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Air Supply (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Color Television Systems (AREA)
  • Solid-Fuel Combustion (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
EP82402063A 1981-11-25 1982-11-10 Installation de chaudière à combustible solide Expired EP0080399B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82402063T ATE12425T1 (de) 1981-11-25 1982-11-10 Heizkesselanlage fuer feste brennstoffe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122023 1981-11-25
FR8122023A FR2517025A1 (fr) 1981-11-25 1981-11-25 Installation de chaudiere a combustible solide

Publications (2)

Publication Number Publication Date
EP0080399A1 EP0080399A1 (fr) 1983-06-01
EP0080399B1 true EP0080399B1 (fr) 1985-03-27

Family

ID=9264335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402063A Expired EP0080399B1 (fr) 1981-11-25 1982-11-10 Installation de chaudière à combustible solide

Country Status (18)

Country Link
US (1) US4419940A (es)
EP (1) EP0080399B1 (es)
JP (1) JPS5896906A (es)
AT (1) ATE12425T1 (es)
AU (1) AU549658B2 (es)
CA (1) CA1200448A (es)
DE (1) DE3262824D1 (es)
DK (1) DK458982A (es)
ES (1) ES8307352A1 (es)
FI (1) FI70997C (es)
FR (1) FR2517025A1 (es)
GR (1) GR76716B (es)
IE (1) IE53508B1 (es)
IN (1) IN157779B (es)
NO (1) NO155020C (es)
PT (1) PT75757A (es)
SU (1) SU1168101A3 (es)
ZA (1) ZA828028B (es)

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* Cited by examiner, † Cited by third party
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FR2513622A1 (fr) * 1981-09-28 1983-04-01 Fives Cail Babcock Procede et appareil pour la calcination des matieres minerales en poudre, notamment en cimenterie
US4481892A (en) * 1983-08-03 1984-11-13 Mah Clifford S Atmospheric fluidized bed combustor
FR2551453B1 (fr) * 1983-08-31 1985-10-11 Fives Cail Babcock Gazeificateur de charbon en lit fluidise sous une haute pression
US4553487A (en) * 1983-09-02 1985-11-19 Waste-Tech Services, Inc. Removal of tramp material from fluid bed vessels
US4576102A (en) * 1983-09-02 1986-03-18 Waste-Tech Services, Inc. Removal of tramp material from fluid bed vessels
FR2554107B1 (fr) * 1983-10-28 1986-02-21 Fives Cail Babcock Procede et appareil pour la calcination des matieres minerales reduites en poudre
CA1252356A (fr) * 1983-11-09 1989-04-11 Michel F.E. Couarc'h Procede et dispositif de reinjection de particules envolees dans une chaudiere a combustible solide
DE3414151A1 (de) * 1984-04-14 1985-10-17 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck No(pfeil abwaerts)x(pfeil abwaerts)-abscheidung, vorzugsweise fuer kleinere industriekessel
DE3443722A1 (de) * 1984-11-30 1986-06-12 Foerster Guenther Verfahren zur thermischen beseitigung von halogenverbindungen, insbesondere dioxine, phosgen und polychlorierte biphenyle bildende chlorverbindungen enthaltenden abfaellen sowie wirbelschicht-reaktor zu seiner durchfuehrung
FR2575272B1 (fr) * 1984-12-20 1989-07-28 Fives Cail Babcock Procede de desulfuration des gaz sortant d'un foyer ou la combustion s'effectue avec agglomeration des cendres, et installation pour la mise en oeuvre de ce procede
DE3447147A1 (de) * 1984-12-22 1986-06-26 Christian Dr.-Ing. 8570 Pegnitz Koch Verfahren und vorrichtung fuer die stickoxidfreie dampferzeugung mit fossilen brennstoffen
US4579070A (en) * 1985-03-01 1986-04-01 The M. W. Kellogg Company Reducing mode circulating fluid bed combustion
FR2583305B1 (fr) * 1985-06-18 1989-10-27 Fives Cail Babcock Procede de desulfuration des gaz provenant du foyer d'une chaudiere et installation pour la mise en oeuvre de ce procede.
FR2583304B1 (fr) * 1985-06-18 1989-12-22 Fives Cail Babcock Installation pour la desulfuration des gaz provenant du foyer d'une chaudiere.
FI853615L (fi) * 1985-09-20 1987-03-21 Tampella Oy Ab Foerfarande foer minskning av utslaeppen av kvaeve- och svaveloxider vid foerbraenning av kvaeve- och svavelhaltigt braensle.
FR2599124B1 (fr) * 1986-05-23 1989-05-05 Caliqua Installation perfectionnee pour la destruction par incineration des ordures menageres ou autres matieres
FR2613251B1 (fr) * 1987-04-06 1991-10-04 Fives Cail Babcock Chaudiere equipee de moyens de desulfuration des gaz de combustion
US5038568A (en) * 1989-11-20 1991-08-13 Pyropower Corporation System for reheat steam temperature control in circulating fluidized bed boilers
US5050510A (en) * 1990-01-29 1991-09-24 Zurn Industries, Inc. Aluminum catch tray system
DE4007635C1 (es) * 1990-03-10 1991-09-19 Vereinigte Kesselwerke Ag, 4000 Duesseldorf, De
JP3140180B2 (ja) * 1992-06-29 2001-03-05 株式会社タクマ ボイラ
US5605118A (en) * 1994-11-15 1997-02-25 Tampella Power Corporation Method and system for reheat temperature control
US20120199117A1 (en) * 2011-02-09 2012-08-09 Babcock Power Services, Inc. Systems and methods for solar boiler construction
RU2464501C1 (ru) * 2011-03-17 2012-10-20 Александр Петрович Капишников Теплоутилизатор для автономного воздушного отопления и горячего водоснабжения при сжигании природного газа
US20130025200A1 (en) * 2011-07-27 2013-01-31 Glorin Group System & Method for mixing and distributing air and steam in a gasifier
FI126039B (en) 2014-06-03 2016-06-15 Amec Foster Wheeler En Oy Fluidized bed boiler with particle separator support structure
EP3205387A1 (en) 2016-02-15 2017-08-16 Johannes August Lercher Preparation and use of zeolitic membranes for selective removal of water
CN107355776B (zh) * 2017-07-13 2019-06-18 武汉华喻燃能工程技术有限公司 超低NOx排放的煤粉锅炉燃烧系统、方法及应用

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Also Published As

Publication number Publication date
ES516720A0 (es) 1983-07-16
NO155020C (no) 1987-01-28
ZA828028B (en) 1983-09-28
DK458982A (da) 1983-05-26
FR2517025A1 (fr) 1983-05-27
ATE12425T1 (de) 1985-04-15
NO823944L (no) 1983-05-26
FI70997C (fi) 1986-10-27
FI823971L (fi) 1983-05-26
GR76716B (es) 1984-08-29
ES8307352A1 (es) 1983-07-16
FI823971A0 (fi) 1982-11-19
AU549658B2 (en) 1986-02-06
IN157779B (es) 1986-06-14
FR2517025B1 (es) 1984-01-06
IE822741L (en) 1983-05-25
SU1168101A3 (ru) 1985-07-15
JPS5896906A (ja) 1983-06-09
DE3262824D1 (en) 1985-05-02
US4419940A (en) 1983-12-13
AU8980982A (en) 1983-06-02
PT75757A (fr) 1982-11-01
EP0080399A1 (fr) 1983-06-01
CA1200448A (fr) 1986-02-11
FI70997B (fi) 1986-07-18
IE53508B1 (en) 1988-11-23
NO155020B (no) 1986-10-20

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