EP0047010A2 - Verbrennungseinrichtung, insbesondere für einen Dampfkessel - Google Patents

Verbrennungseinrichtung, insbesondere für einen Dampfkessel Download PDF

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Publication number
EP0047010A2
EP0047010A2 EP81106806A EP81106806A EP0047010A2 EP 0047010 A2 EP0047010 A2 EP 0047010A2 EP 81106806 A EP81106806 A EP 81106806A EP 81106806 A EP81106806 A EP 81106806A EP 0047010 A2 EP0047010 A2 EP 0047010A2
Authority
EP
European Patent Office
Prior art keywords
combustion
sheaths
opening
parts
post
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
EP81106806A
Other languages
English (en)
French (fr)
Other versions
EP0047010A3 (en
EP0047010B1 (de
Inventor
Jean Vidal
Lucien Delaplace
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.)
Stein Industrie SA
Original Assignee
Stein Industrie 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 Stein Industrie SA filed Critical Stein Industrie SA
Publication of EP0047010A2 publication Critical patent/EP0047010A2/de
Publication of EP0047010A3 publication Critical patent/EP0047010A3/fr
Application granted granted Critical
Publication of EP0047010B1 publication Critical patent/EP0047010B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices

Definitions

  • the subject of the present invention is a combustion device, in particular for a steam generator, comprising a combustion chamber extended downwards by an after-combustion grate and an ashtray.
  • solid fuels are pulverized before their introduction by the burners into the hearth of steam generators or others.
  • the lightest ash particles are entrained by the combustion gases towards the exchangers, the dust collector and finally the chimney.
  • the largest particles fall into an ashtray located at the bottom of the fireplace.
  • the walls of the hearth can be covered by accidental fouling of ashes which are eliminated naturally or by means of sweeping devices which make them fall into the ashtray.
  • afterburners are installed at the bottom of the fireplace.
  • these grids are to ensure normal operation of the generator in the event of significant fouling of the combustion chamber or of the exchanger elements arranged at its upper part.
  • the clinkers falling from the post-combustion grates are received by scavengers ensuring their extraction, then their evacuation. cuation, by a transport device, to a storage place.
  • the present invention proposes to remedy such drawbacks.
  • the combustion apparatus of the invention is characterized in that the opening of the lower part of said ashtray is divided into two parts, each of these parts forming the inlet of a sheath, the separation means delimiting the two the aforementioned parts not extending above the plane of said opening, and in that the two sheaths are arranged symmetrically with respect to a vertical plane, the lower part of each of the sheaths having an opening opening onto a post grid combustion, the two grates being parallel.
  • Said separation means are advantageously constituted by the adjacent side walls of the sheaths.
  • FIG. 5 a combustion chamber or hearth 51 of the steam generator is seen, the burners opening into the hearth not being shown to simplify the drawing.
  • the chamber 51 is extended downwards by the ashtray 54.
  • the opening located at the lower part of the ashtray is subdivided into two parts 57 and 58 by means of a part 56 emerging above the plane of said opening and having substantially a triangular shape.
  • To the. vertical of the two openings 57 and 58 are disposed post-combustion grates 59 and 60. These grids therefore have their axis located in the median vertical plane of the combustion chamber. They move in opposite directions from each other towards the center of the device and the bottom clusters which they pour through a chute 61 fall into a scraper 62 and are extracted towards a conveyor 63.
  • the post-combustion grates 59 and 60 are subjected to the radiation of the flame and to the direct impact of the materials falling into the combustion chamber.
  • the part 56 ensuring the subdivision of the lower part of the ashtray 54 is also subjected to the radiation of the flame and to the direct impact of the materials falling into the combustion chamber.
  • the length of the post-combustion grates 59, 60 is less than half the width of the lower part of the ashtray.
  • grates where these are installed perpendicular to the arrangement described above, but here too a part of the grids is subjected to the radiation of the flame and to the direct impact of bottom ash.
  • Figures 1 to 4 relate to the structure according to the invention.
  • the rectangular opening of the lower part of the ashtray 4 is subdivided in a plane E into two parts 5 and 6.
  • Each of the parts 5 and 6 constitutes the entry of a sheath, 7 and 8 respectively, these two ducts being arranged sym- t ically relative to a vertical plane and forming between them an angle G ⁇ close to 70 °, in the example shown.
  • the separation means delimiting the two parts 5 and 6 are constituted by the adjacent walls of said sheaths 7 and 8 and, as can be seen, they do not extend, unlike the part 56 of FIG. 5, above the plane.
  • each sheath 7 and 8 has openings 9 and 10 respectively located in the same plane F and each of these openings opens onto a post-combustion grate, 11 and 12 respectively.
  • the grids 11 and 12 are parallel to each other. In Figure 1 only the grid 12 has been shown for clarity of the drawing. As can be seen with particular reference to FIG. 2, each grate has a length G greater than half the depth L of the combustion chamber 1.
  • the ashes fall into troughs 13 and 14, then into a scraper 17, while the clinker falls into troughs 15 and 16 then into a scraper 18.
  • the scrappers 17 and 18 then entrain the ashes and bottom ash to a conveyor 19, which routes them outwards.
  • the device according to the invention makes it possible to distribute the ashes at the outlet of the ashtray through two openings located in the same plane, which makes it possible to install an afterburner grid below each of them. whose length G is greater than half the depth L of the hearth. Consequently, the active surface of the grids can be greater than that corresponding to the two half-openings made. Each grid can therefore be extended beyond the corresponding half-opening, which significantly increases the effective area of said grids, without increasing the size of the generator.
  • the arrangement of the sheaths in the device according to the invention makes it possible to avoid any direct impact of clinker, while shielding from the direct radiation of the flames, these hazards being detrimental to the post-combustion grates and even to personnel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Solid-Fuel Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Incineration Of Waste (AREA)
EP19810106806 1980-09-03 1981-09-01 Verbrennungseinrichtung, insbesondere für einen Dampfkessel Expired EP0047010B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8018990A FR2489483A1 (fr) 1980-09-03 1980-09-03 Nouvelle structure de cendrier, grilles de post-combustion et de decrasseurs pour generateurs de vapeur
FR8018990 1980-09-03

Publications (3)

Publication Number Publication Date
EP0047010A2 true EP0047010A2 (de) 1982-03-10
EP0047010A3 EP0047010A3 (en) 1982-03-17
EP0047010B1 EP0047010B1 (de) 1983-10-05

Family

ID=9245605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810106806 Expired EP0047010B1 (de) 1980-09-03 1981-09-01 Verbrennungseinrichtung, insbesondere für einen Dampfkessel

Country Status (4)

Country Link
EP (1) EP0047010B1 (de)
BR (1) BR8105614A (de)
DE (1) DE3161135D1 (de)
FR (1) FR2489483A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620706A3 (de) * 2012-01-26 2015-09-30 Babcock Borsig Steinmüller GmbH Dampferzeugeranlage mit Nachbrennkammer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE560815C (de) * 1929-03-26 1932-10-07 Franz Seiffert & Co Akt Ges Spueldruckentaschungseinrichtung mit einem ueber der Strahlduese liegenden Siebrost zum Auffangen der Brennstoffrueckstaende
DE959581C (de) * 1944-04-13 1957-03-07 Siemens Ag Schlackenzuteiler fuer Dampferzeuger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620706A3 (de) * 2012-01-26 2015-09-30 Babcock Borsig Steinmüller GmbH Dampferzeugeranlage mit Nachbrennkammer

Also Published As

Publication number Publication date
BR8105614A (pt) 1982-05-18
FR2489483A1 (fr) 1982-03-05
EP0047010A3 (en) 1982-03-17
EP0047010B1 (de) 1983-10-05
DE3161135D1 (en) 1983-11-10

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