EP0127733B1 - Four à tambour rotatif avec refroidisseur - Google Patents

Four à tambour rotatif avec refroidisseur Download PDF

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Publication number
EP0127733B1
EP0127733B1 EP84102518A EP84102518A EP0127733B1 EP 0127733 B1 EP0127733 B1 EP 0127733B1 EP 84102518 A EP84102518 A EP 84102518A EP 84102518 A EP84102518 A EP 84102518A EP 0127733 B1 EP0127733 B1 EP 0127733B1
Authority
EP
European Patent Office
Prior art keywords
outlet head
rotary drum
kiln outlet
kiln
cooler
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
EP84102518A
Other languages
German (de)
English (en)
Other versions
EP0127733A2 (fr
EP0127733A3 (en
Inventor
Heinz Ing. Grachtrup (Grad.)
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius 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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0127733A2 publication Critical patent/EP0127733A2/fr
Publication of EP0127733A3 publication Critical patent/EP0127733A3/de
Application granted granted Critical
Publication of EP0127733B1 publication Critical patent/EP0127733B1/fr
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

Definitions

  • the invention relates to a rotary kiln
  • Cooler according to the preamble of claim 1. It belongs to the general state of the art that material fired in a rotary kiln is fed to a downstream cooler via a stationary kiln outlet head assigned to the outlet end of the rotary tube and an inlet shaft arranged below it.
  • One end of the stationary furnace outlet head encompasses the edge area of the rotary tube end facing it sufficiently far to ensure a sufficient seal in this area.
  • a sealable parting line is also provided so that changes in length of the furnace due to temperature influences and resulting displacements of the furnace outlet head can be largely absorbed.
  • the drop height of the fired material While in rotary kilns with relatively small dimensions, the drop height of the fired material generally remains within reasonable limits and the separating joint to be sealed between the furnace outlet head and the cooler inlet shaft can be arranged approximately horizontally (which generally ensures sufficient displaceability of the furnace outlet head during operation), In the case of larger rotary kilns, there are often considerable problems with respect to the acceptable drop height of the fired material.
  • this oblique separation joint allows only a very limited displaceability of the kiln outlet head in the longitudinal direction of the kiln, which has several disadvantages: If the rotary tube is elongated excessively (due to the heating), sufficient compensation due to the displaceability of the head is not always guaranteed with the necessary security , whereby it should be noted that the inclined parting line, which must accommodate the length of the furnace during the compensation, should at the same time seal the connection point between the furnace outlet head and the inlet shaft and should therefore not be excessively large, but on the other hand, if the width is too small, the length expansion option or can hinder their compensation by the furnace outlet head; Due to this low displaceability of the furnace outlet head, the collar overlapping the rotary tube end must be dismantled approximately in sections so that the corresponding rotary tube end is accessible for maintenance work.
  • the invention is therefore based on the object of designing a rotary kiln of the type required in the preamble of claim 1 in its transition region to the cooler in such a way that even with larger furnace dimensions and with sufficient displacement of the furnace outlet head, a relatively small drop height for the firing material can be maintained .
  • the gradations formed on both sides of the furnace outlet head and cooler inlet duct each result in an equally large side opening, the side openings on both sides of the furnace outlet head and inlet duct being able to lie opposite one another.
  • These closable side openings ensure, on the one hand, that the furnace outlet head can be moved sufficiently in the longitudinal direction of the furnace (to the extent that the outlet end of the rotary tube can be made freely accessible for maintenance purposes), and, on the other hand, together with the separating joint sections located at different heights, they enable a sufficiently low firing head , since the end of the radiator inlet shaft opposite the end of the rotary kiln can be made relatively high.
  • the rotatably mounted rotary tube 2 is illustrated in FIG. 1 with its outlet end 2a and the stationary furnace outlet head 3 assigned to this end 2a.
  • the rotary tube furnace 1 is followed by a cooler 4, which is connected to the furnace outlet head 3 via an inlet shaft 5, which in the exemplary embodiment shown is part of the cooler itself; however, it can also be designed as an independent inlet shaft between the actual cooler inlet and the furnace outlet head.
  • the cooler 4 is illustrated in the form of a moving grate cooler; However, this cooler downstream of the rotary kiln 1 can be any other suitable design, for example a traveling grate cooler, a drum cooler and the like.
  • the stationary furnace outlet head 3 can be displaced or moved to a limited extent on cylindrical rollers 6 in the longitudinal direction of the rotary kiln 1 (see longitudinal axis 1 a), whereby it is supported on a standing surface by means of these cylindrical rollers 6, through the top 7a of a building ceiling 7 provided here is formed.
  • the end of the furnace outlet head 3 facing the end of the rotary tube 2a is designed in the form of a collar part 3a, which encircles the edge region of this end of the rotary tube 2a with its protective segments 8 provided there in the usual manner, a type of seal - as is generally known - being created.
  • the burner lance (not shown in more detail) can be inserted into the outlet-side rotary tube end 2a in a conventional manner.
  • the side walls 3c, 3d and 5a, 5b of the furnace outlet head 3 and the cooler inlet shaft 5 are formed in the area of the connection point with interlocking steps 10 and 11, which run approximately vertically and are essentially the same height, so that the steps 10 in the side walls 3c , 3d of the furnace outlet head 3 with the gradations 11 in the side walls 5a, 5b of the inlet shaft 5 interlock approximately correspondingly with one another.
  • steps 10 in the side walls 3c , 3d of the furnace outlet head 3 with the gradations 11 in the side walls 5a, 5b of the inlet shaft 5 interlock approximately correspondingly with one another.
  • the two mutually opposite gradations 10, 11 have a horizontal distance a from one another on each longitudinal side of the furnace outlet head 3 and inlet shaft 5, so that a side opening 12 is formed between each of these gradations 10, 11, whose horizontal width corresponds to the distance a and whose vertical height h corresponds approximately to the height of the gradations 10, 11.
  • Said horizontal distance a between the two mutually opposite gradations 10, 11 also corresponds in the operating position of the furnace outlet head 3 shown in solid lines in FIG.
  • each side wall 3c, 3d or 5a, 5b of furnace outlet head 3 and inlet shaft 5 only has a correspondingly high level Gradation 10 or 11 and a side opening 12 formed between them is provided.
  • the deeper parting joint section 9a runs at a height in the area below the outlet-side rotary tube end 2a, namely it extends horizontally from the area of the end faces facing the rotary tube 2 below the collar part 3a and opens directly into the lower end of the two side openings 12 in the upper height separating joint section 9b approximately at the level of the standing surface 7a of the furnace outlet head 3, whereby it is horizontal from the area of the end faces opposite the rotary tube end 2a (for example 3b) and opens directly into the upper end of the side openings 12.
  • each parting line section 9a or 9b runs in its height approximately over the entire associated peripheral section, i.e. In the exemplary embodiment illustrated in FIG. 1 with side openings 12 arranged approximately in the region of the longitudinal center, each parting line section 9a or 9b extends approximately over half the circumference in the region of the connection point.
  • the height b of the parting line 9 is dimensioned such that vertical expansions caused by temperature influences can also be sufficiently compensated for in this area.
  • the parting line 9 is expediently sealed by means of a conventional ceramic fiber seal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)

Claims (6)

1. Four tubulaire rotatif équipé d'un réfrigérant et comprenant un tube tournant, une tête stationnaire de décharge du four montée de manière hermétique à l'extrémité de décharge du tube tournant et translatable sur une distance limitée par rapport à cette extrémité de décharge du tube, ainsi qu'une colonne de descente reliant la tête de décharge du four et le réfrigérant, un joint capable d'établir l'étanchéité se trouvant à la jonction entre la tête de décharge et la colonne de descente, caractérisé par les particularités suivantes:
a) les parois latérales (3c, 3d ainsi que 5a, 5b) de la tête (3) de décharge du four etde la colonne de descente (5) comportent des étagements (10, 11) sensiblement verticaux, de même hauteur, s'emboîtant les uns dans les autres dans la zone de ladite jonction;
b) deux étagements (10, 11) situés en face l'un de l'autre sont placés, à la position. de service de la tête (3) de décharge du four, à une distance horizontale (a) qui correspond approximativement à la course maximale de translation de cette tête, en formant une ouverture latérale obturable (12);
c) le joint (9) est subdivisé par les étagements (10, 11) en au moins deux sections horizontales (9a, 9b) situées à des niveaux différents et aboutissant dans les ouvertures latérales formées (12).
2. Four tubulaire rotatif selon la revendication 1, caractérisé en ce que les ouvertures latérales (12) formées entre les étagements (10, 11 ) sont garnies de briques réfractaires amovibles (14).
3. Four tubulaire rotatif selon la revendication 1, caractérisé en ce qu'un unique étagement (10, 11) ainsi qu'une unique ouverture latérale (12) formée entre eux sont prévus dans chaque paroi latérale (3c, 3d, 5a, 5b) de la tête de décharge (3) et de la colonne de descente (5).
4. Four rotatif selon la revendication 3, caractérisé en ce que la section de joint située au niveau le plus bas (9a) passe sous l'extrémité de décharge (2a) du tube tournant et aboutit dans l'extrémité inférieure des ouvertures latérales (12), tandis que la section de joint située au niveau le plus haut (9b) passe approximativement à la hauteur du plan fixe (7a) de montage de la tête de décharge du four et aboutit dans l'extrémité supérieure des ouvertures latérales (12).
5. Four tubulaire rotatif selon la revendication 1, caractérisé en ce que la course maximale de translation de la tête (3) de décharge du four a une longueur calculée de manière à autoriser la libre accessibilité de la zone située entre la tête (3) de décharge du four et l'extrémité de décharge (2a) du tube tournant.
6. Four tubulaire rotatif selon la revendication 1, caractérisé en ce qu'une garniture de fibres de céramique assure l'étanchéité du joint (9).
EP84102518A 1983-05-09 1984-03-08 Four à tambour rotatif avec refroidisseur Expired EP0127733B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3316974 1983-05-09
DE19833316974 DE3316974A1 (de) 1983-05-09 1983-05-09 Drehrohrofen mit kuehler

Publications (3)

Publication Number Publication Date
EP0127733A2 EP0127733A2 (fr) 1984-12-12
EP0127733A3 EP0127733A3 (en) 1986-03-19
EP0127733B1 true EP0127733B1 (fr) 1987-09-16

Family

ID=6198584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102518A Expired EP0127733B1 (fr) 1983-05-09 1984-03-08 Four à tambour rotatif avec refroidisseur

Country Status (6)

Country Link
US (1) US4554876A (fr)
EP (1) EP0127733B1 (fr)
BR (1) BR8401906A (fr)
DE (2) DE3316974A1 (fr)
ES (1) ES531677A0 (fr)
ZA (1) ZA842153B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520927A1 (de) * 1985-06-11 1986-12-11 Krupp Polysius Ag, 4720 Beckum Vorrichtung zur waermebehandlung von feinkoernigem gut
US4768445A (en) * 1986-10-17 1988-09-06 Man Gutehoffnungshutte Gmbh Waste incinerator construction
US5164158A (en) * 1990-12-14 1992-11-17 Thermotech Systems Corporation Methods for remediating contaminated soils
DE4343464A1 (de) * 1993-12-20 1995-06-22 Kloeckner Humboldt Deutz Ag Hitzebeständige Dichtung
US5535685A (en) * 1994-12-28 1996-07-16 Dae Hwan Co., Ltd. Incinerator utilizing dry distillation
US6419481B2 (en) * 2000-04-06 2002-07-16 Andritz Oy Cooler for rotary kilns
US6474985B1 (en) 2002-04-17 2002-11-05 Metso Minerals Industries, Inc. Toothed grate for rotary kiln peripheral discharge openings

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73614A (fr) *
FR842333A (fr) * 1937-12-01 1939-06-09 Fuller Co Procédé et appareil pour refroidir le clinker
US2431799A (en) * 1945-11-08 1947-12-02 Fuller Co Cooler having overlapping replaceable grates
US2461754A (en) * 1946-10-29 1949-02-15 Traylor Engineering & Mfg Comp Sealing ring for rotary kilns
US2611330A (en) * 1947-06-19 1952-09-23 United States Steel Corp Method of repairing furnace walls
US2960943A (en) * 1959-05-12 1960-11-22 Smidth & Co As F L Incinerator with water cooled ignition chamber
DE1433342A1 (de) * 1964-07-16 1968-11-14 Metallgesellschaft Ag Vorrichtung zur Trennung von Austragsgemischen aus Drehrohroefen
US3350077A (en) * 1965-08-05 1967-10-31 Smidth & Co As F L Rotary kiln installations
US3358977A (en) * 1965-08-05 1967-12-19 Smidth & Co As F L Rotary kiln installations
US3539164A (en) * 1967-04-22 1970-11-10 Kloeckner Humboldt Deutz Ag Cooler for hot lump goods,particularly cement clinker
US3580553A (en) * 1969-05-14 1971-05-25 Eveleth Taconite Co Grate stripper for pelletizing machine
GB1286925A (en) * 1971-04-19 1972-08-31 Smidth & Co As F L Method of assembling a junction piece to a planetary cooler tube on a rotary kiln
SU616504A1 (ru) * 1976-03-05 1978-07-25 Иркутский филиал Всесоюзного научно-исследовательского и проектного института алюминиевой, магниевой и электродной промышленности Уплотнение вращающейс печи
SU577378A1 (ru) * 1976-03-09 1977-10-25 Государственный Ордена Трудового Красного Знамени Всесоюзный Проектный И Научно-Исследовательский Институт Цементной Промышленности Устройство дл уплотнени зазора между вращающейс печью и неподвижной камерой
US4083678A (en) * 1976-11-05 1978-04-11 Tennessee River Pulp & Paper Company Rotary kiln
JPS54107471A (en) * 1978-02-10 1979-08-23 Kawasaki Heavy Ind Ltd Rotary drum

Also Published As

Publication number Publication date
EP0127733A2 (fr) 1984-12-12
US4554876A (en) 1985-11-26
ES8502248A1 (es) 1984-12-16
DE3316974A1 (de) 1984-11-15
BR8401906A (pt) 1984-12-11
ZA842153B (en) 1984-11-28
EP0127733A3 (en) 1986-03-19
ES531677A0 (es) 1984-12-16
DE3466277D1 (en) 1987-10-22

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