EP0047010B1 - Verbrennungseinrichtung, insbesondere für einen Dampfkessel - Google Patents

Verbrennungseinrichtung, insbesondere für einen Dampfkessel Download PDF

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Publication number
EP0047010B1
EP0047010B1 EP19810106806 EP81106806A EP0047010B1 EP 0047010 B1 EP0047010 B1 EP 0047010B1 EP 19810106806 EP19810106806 EP 19810106806 EP 81106806 A EP81106806 A EP 81106806A EP 0047010 B1 EP0047010 B1 EP 0047010B1
Authority
EP
European Patent Office
Prior art keywords
sheaths
combustion
opening
post
parts
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
EP19810106806
Other languages
English (en)
French (fr)
Other versions
EP0047010A2 (de
EP0047010A3 (en
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 present invention relates to a combustion device, in particular for a steam generator, comprising a combustion chamber extended downwards by an afterburner grate and by an ashtray, the opening of the lower part of said ashtray being divided in two parts.
  • 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 intended to ensure the 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, 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 each of these parts forms the entry of a sheath, the separation means delimiting the two 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-combustion grate, the two grids being parallel.
  • Said separation means are advantageously constituted by the adjacent side walls of the sheaths.
  • a combustion chamber or hearth 51 of the steam generator the burners opening into the hearth not being shown to simplify the drawing.
  • the chamber 51 is extended downward by the ashtray 54.
  • the opening located at the bottom 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.
  • Vertical of the two openings 57 and 58 are arranged post-combustion grates 59 and 60. These grids therefore have their axis located in the vertical median plane of the combustion chamber. They move in opposite directions from each other towards the center of the device and the bottom ash which they pour through a chute61 fall into a scraper62 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.
  • Figures 1 to 4 relate to the structure according to the invention.
  • the rectangular opening of the lower part of the ashtray4 is subdivided in a plane E into two parts 5 and 6.
  • parts 5 and 6 constitutes the inlet of a sheath, 7 and 8 respectively, these two sheaths being arranged symmetrically with respect to a vertical plane and forming an angle CI therebetween. 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 transports 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 the direct radiation of the flames, these hazards being detrimental to the post-combustion grates and even to personnel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Solid-Fuel Combustion (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)

Claims (5)

1. Verbrennungsapparat, insbesondere für einen Dampfkessel, der eine Verbrennungskammer aufweist, die nach unten durch ein Nach-Verbrennungsgitter und durch einen Aschenbehälter verlängert ist, wobei die Öffnung des unteren Teils dieses Aschenbehälters in zwei Teil (5, 6) aufgeteilt ist, dadurch gekennzeichnet, daß jeder dieser Teile den Eingang eines Schachts (7, 8) bildet, wobei die Trennmittel, die die beiden genannten Teile begrenzen, sich nicht oberhalb der Ebene (E) dieser Öffnung erstrecken, und daß die beiden Schächte symmetrisch in Bezug auf eine senkrechte Ebene angeordnet sind, wobei der untere Teil jedes der Schächte eine Öffnung (9, 10) aufweist, die über einem Nach-Verbrennungsgitter(11, 12) mündet, und wobei die beiden Gitter parallel sind.
2. Apparat nach Anspruch 1, dadurch gekennzeichnet, daß die Öffnungen (9, 10) des unteren Teils der Schächte (7, 8) in einer gleichen Ebene (F) angeordnet und zueinander parallel sind.
3. Apparat nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Schächte (7, 8) zueinander einen Winkel von etwa 70° bilden.
4. Apparat nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Trennmittel, die die Eingänge der Schächte (7, 8) begrenzen, von den benachbarten Wänden dieser Schächte gebildet werden.
5. Apparat nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jedes Nach-Verbrennungsgitter(11, 12) eine Länge (G) aufweist, die mindestens gleich der Hälfte der Tiefe (L) der Verbrennungskammer (1) ist.
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 EP0047010A2 (de) 1982-03-10
EP0047010A3 EP0047010A3 (en) 1982-03-17
EP0047010B1 true 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012001400A1 (de) * 2012-01-26 2013-08-01 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

Also Published As

Publication number Publication date
FR2489483A1 (fr) 1982-03-05
DE3161135D1 (en) 1983-11-10
EP0047010A2 (de) 1982-03-10
BR8105614A (pt) 1982-05-18
EP0047010A3 (en) 1982-03-17

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