EP0015351B2 - Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens - Google Patents

Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens Download PDF

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Publication number
EP0015351B2
EP0015351B2 EP19790400163 EP79400163A EP0015351B2 EP 0015351 B2 EP0015351 B2 EP 0015351B2 EP 19790400163 EP19790400163 EP 19790400163 EP 79400163 A EP79400163 A EP 79400163A EP 0015351 B2 EP0015351 B2 EP 0015351B2
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EP
European Patent Office
Prior art keywords
enclosure
jacket
lining
nozzle
refractory lining
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
EP19790400163
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English (en)
French (fr)
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EP0015351B1 (de
EP0015351A1 (de
Inventor
Daniel Dementhon
Jacques Bonin
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.)
CLE
Original Assignee
CLE
Creusot Loire Enterprises 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8186495&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0015351(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CLE, Creusot Loire Enterprises SA filed Critical CLE
Priority to EP19790400163 priority Critical patent/EP0015351B2/de
Priority to DE7979400163T priority patent/DE2962119D1/de
Publication of EP0015351A1 publication Critical patent/EP0015351A1/de
Publication of EP0015351B1 publication Critical patent/EP0015351B1/de
Application granted granted Critical
Publication of EP0015351B2 publication Critical patent/EP0015351B2/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers

Definitions

  • connection conduit between the interior and the exterior of an enclosure such as an oven and applies more specifically to the connection conduits between a cement kiln and clinker cooling chambers arranged satellite around it and called "ba) ion nets *.
  • Each connecting duct normally consists of a metal tube connecting the wall of the oven to that of the balloon and inside which is placed a nozzle which most often includes a metal jacket internally covered with a refractory lining of protection.
  • Such a duct is known for example from document DE-A-2 734 230.
  • the refractory lining covering the metal jacket is connected inside the furnace to the refractory lining of the wall of the furnace by means of a gasket which extends to the metal outer shell of the oven.
  • the materials entrained in the oven, the connecting conduits and the balloons are particularly hot and abrasive.
  • the refractory lining protecting the metal walls from these various elements is therefore subject to significant wear and must be regularly repaired.
  • the refractory lining protecting the jacket of the nozzle can also be deteriorated, which leads to an increase in the temperature of the tubing and cracks are very frequently observed.
  • the subject of the invention is a new type of connecting duct ensuring better protection of the shell and of the tubular even under the worst operating conditions.
  • the end of the sleeve of the nozzle penetrating inside the enclosure is flared in the thickness of the coating of the enclosure so as to cover a certain thickness of this coating around the periphery of the duct and the coating of the nozzle covers the flared part of the shirt.
  • the zone 10 of the enclosure surrounding the series of orifices 20 is covered with a coating of refractory concrete instead of bricks.
  • FIG. 1 represents the conventional embodiment of a connecting duct between the wall of the enclosure and that of the corresponding balloon, the connecting duct can have various shapes, for example bent.
  • Figure 1 shows only the part of the connecting duct fixed directly to the enclosure and which concerns only the invention.
  • Each orifice 20 for the passage of the clinker towards a balloon is delimited by a metal tube 21 integral with the ferrule 11 constituting the wall of the enclosure and extending outwards to a flange on which the suite, not shown, is fixed of the connecting pipe.
  • the orifice 20 is formed in the refractory concrete 10 covering the shell 11.
  • a nozzle consisting of a jacket 3 covered internally by a refractory lining 4 made of rammed earth or concrete.
  • the jacket 3 generally penetrates towards the interior of the furnace over a certain part of the thickness of the coating 10.
  • the jacket 3 can end in an annular partition 30 extending towards the interior of the duct for the maintenance rammed earth 4.
  • the inner end of the jacket 3 is subjected directly to the heat prevailing inside the enclosure and to the wear of the materials which circulate there.
  • this insulator placed in the space 22 between the tubing and the jacket 3, this insulator, the upper part of which opens into the furnace, can be damaged and the tubing is thus subjected to a high temperature.
  • the part of the concrete 10 surrounding the orifice and which is subjected to abrasion by the clinker blocks circulating in the furnace can easily come off and in this case the ferrule 11 risks being subjected directly to the heat of the furnace and to deteriorate.
  • the new nozzle according to the invention is shown in Figure 3. It is placed inside the same tubing 21 integral with the shell 11 and therefore can easily adapt to existing ovens, for example during a repair of nozzles and refractory lining.
  • This new nozzle is essentially characterized by its jacket 3 whose end 31, on the side of the interior of the oven, is flared in conical shape, as shown in the figure.
  • the refractory lining 4 internally covering the jacket 3, instead of stopping a little beyond the shell 11, is extended towards the inside of the furnace so that its end 41 covers the flared part 31 of the jacket 3, its wall 42 connecting to the internal wall of the coating 10 of the shell.
  • the new nozzle is placed in the pipe 21 from the inside of the furnace and that its end comes to be embedded in an orifice formed in the covering 10 and which comprises, from the interior side to the enclosure, a cylindrical section 12 of diameter equal to the outside diameter of the flared part 31, over part of the height of the coating, this cylindrical part being extended over the rest of the coating thickness, by a shoulder 13 limited by a conical surface, up to an orifice with an internal diameter equal to that of the pipe 21.
  • the edge of the orifice formed in the refractory lining of the furnace is not subjected directly to the wear of the clinker blocks, but is on the contrary protected by the part 41 of the rammed earth which can be easily replaced.
  • the wall 42 of the latter has the shape of a widely flared conical bowl which ensures better guidance of the blocks of too large diameter to pass through the nozzle and which are, in known manner, retained by a bar 5 placed across orifice 20.
  • the length (1) of the area of refractory concrete 10 subjected to the wear of the blocks in the event of deterioration of the rammed earth 41 is less than in the conventional arrangement and therefore resists better, the concrete wearing out in the worst case only up to the line 14 indicated in phantom which maintains a sufficient thickness of refractory lining to protect the shell 11.
  • the jacket 3 of which no part is normally exposed directly to the heat of the furnace and to the wear of the clinker can be executed in a steel with lower characteristics than the steels used up to present for classic layouts.
  • This steel does not indeed need to have characteristics capable of imparting good wear resistance to it since it is only by accident and for a short period that the refractory lining of the nozzle could be completely removed . Consequently, the steel constituting the jacket does not need to have characteristics capable of giving it good resistance to wear.
  • it will advantageously be of a very easily weldable grade so as to allow, in particular, the fixing by welding of the hooks necessary for the laying of new adobe or refractory concrete coverings. This shade will in particular be well suited to behave correctly at the various temperature levels to which the nozzle may be subjected.
  • this type of nozzle can be used both in a cement kiln operating according to the dry method and the wet method, and, more generally, it will be usable in all cases where the 'a connection duct must be made between the inside and the outside of an enclosure inside which a material at high temperature circulates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (5)

1. Mit einer feuerfesten inneren Auskleidung (10) überzogene Verbindungsleitung zwischen innen und aussen einer Umhüllung wie eines Ofens, mit einer durch eine Öffnung (20) innerhalb der Umhüllung (1) ausmündenden und in einem mit der besagten Umhüllung (1) festverbundenen Rohrstutzen (21) liegenden und sich nach aussen erstreckenden Düse, wobei die besagte Düse teilweise innerhalb der feuerfesten Auskleidung (10) der Umhüllung (1) eindringt und aus einem innen mit einer sich innerhalb der Umhüllung (1) an die feuerfeste Auskleidung (10) derselben anschliessenden feuerfesten Auskleidung (4) überzogenen metallischen Mantel (3) besteht, gekennzeichnet durch die Tatsache, dass der in das Innere der feuerfesten Auskleidung (10) der Umhüllung (1) eindringende Teil (31) des Mantels (3) weitgehend in der Dicke dieser Auskleidung (10) aufgeweitet ist, um eine bestimmte Dicke dieser Auskleidung (10) an dem Umfang der Leitung zu überdecken, wobei die feuerfeste Auskleidung (4) der Düse den aufgeweiteten Teil (31) des Mantels (3) überdeckt.
2. Verbindungsleitung gemäss Anspruch 1, gekennzeichnet durch die Tatsache, dass der aufgeweitete Teil (31) der Düse eine kegelförmige Gestalt hat.
3. Verbindungsleitung nach einem der vorangehenden Ansprüche, gekennzeichnet durch die Tatsache, dass das Ende (31), (41) der Düse innerhalb der Umhüllung in einer in der feuerfesten Auskleidung (10) der Umhüllung ausgebildeten Öffnung liegt, wobei die besagte Offnung über einen Teil der Dicke dieser Auskleidung und zur Innenseite der Umhüllung hin einen zylindrischen Querschnitt (12) hat, mit einem mit dem grössten Durchmesser des aufgeweiteten Teils (31) gleichen Durchmesser, wobei der zylindrische Teil (12) über den Rest der Dicke der Auskleidung (10) durch eine unter dem aufgeweiteten Teil (31) bis zu einem Durchmesser der Grössenordnung desjenigen des Düsenmantels (3) verlaufende Schulter verlängert ist.
4. Verbindungsleitung nach Anspruch 3, gekennzeichnet durch die Tatsache, dass der den aufgeweiteten Teil (31) des Mantels überdeckende Teil (41) der Düsenauskleidung (4) den zylindrischen Teil der in der Auskleidung (10) der Umhüllung ausgebildeten Öffnung bis zum fluchtenden Anschliessen an die Innenfläche der letzteren ausfüllt.
5. Verbindungsleitung gemäss Anspruch 1, gekennzeichnet durch die Tatsache, dass ein mit Isolierstoff ausgefüllter ringförmiger Raum (22) zwischen dem Düsenmantel (3) und dem Rohrstutzen (21) angeordnet ist und dass dieser Raum zum Innern der Ausfüllung hin durch den aufgeweiteten Teil (31) des Mantels (3) verschlossen ist.
EP19790400163 1979-03-13 1979-03-13 Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens Expired EP0015351B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19790400163 EP0015351B2 (de) 1979-03-13 1979-03-13 Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens
DE7979400163T DE2962119D1 (en) 1979-03-13 1979-03-13 Joining duct between the inside and the outside of a furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790400163 EP0015351B2 (de) 1979-03-13 1979-03-13 Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens

Publications (3)

Publication Number Publication Date
EP0015351A1 EP0015351A1 (de) 1980-09-17
EP0015351B1 EP0015351B1 (de) 1982-02-17
EP0015351B2 true EP0015351B2 (de) 1986-05-07

Family

ID=8186495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400163 Expired EP0015351B2 (de) 1979-03-13 1979-03-13 Verbindungsrohr zwischen dem Inneren und dem Äusseren eines Ofens

Country Status (2)

Country Link
EP (1) EP0015351B2 (de)
DE (1) DE2962119D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI71837C (fi) * 1982-11-26 1987-02-09 Partek Ab Nedloppskonstruktion foer kylare i roterugn.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE569191A (de) *
US3396961A (en) * 1965-08-09 1968-08-13 Gen Refractories Co Precast taphole assembly
DE2426546A1 (de) * 1974-05-31 1975-12-11 Kloeckner Humboldt Deutz Ag Vorrichtung zur gasdichten verbindung zweier rohre miteinander

Also Published As

Publication number Publication date
EP0015351B1 (de) 1982-02-17
EP0015351A1 (de) 1980-09-17
DE2962119D1 (en) 1982-03-25

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