EP0367956B1 - Aube pour cylindres de refroidissement, fours à tambour rotatif ou installations similaires - Google Patents

Aube pour cylindres de refroidissement, fours à tambour rotatif ou installations similaires Download PDF

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Publication number
EP0367956B1
EP0367956B1 EP89117507A EP89117507A EP0367956B1 EP 0367956 B1 EP0367956 B1 EP 0367956B1 EP 89117507 A EP89117507 A EP 89117507A EP 89117507 A EP89117507 A EP 89117507A EP 0367956 B1 EP0367956 B1 EP 0367956B1
Authority
EP
European Patent Office
Prior art keywords
tube
drum
elements
rotary
arcuate
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 - Lifetime
Application number
EP89117507A
Other languages
German (de)
English (en)
Other versions
EP0367956A1 (fr
Inventor
Ralf Filges
Fred Klotmann
Hans Jürgen Wutschke
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT89117507T priority Critical patent/ATE96223T1/de
Publication of EP0367956A1 publication Critical patent/EP0367956A1/fr
Application granted granted Critical
Publication of EP0367956B1 publication Critical patent/EP0367956B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/028—Cooling with means to convey the charge comprising a rotary drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • 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
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F27B7/162—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels
    • 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
    • F27B7/383—Cooling devices for the charge
    • F27B7/386—Rotary-drum cooler
    • 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

  • the invention relates to internals for tubular coolers, satellite coolers, rotary kilns, drum dryers or the like to improve the heat transfer between a granular, at least partially scatterable material such as. B. cement clinker and a gas stream such. B. cooling air.
  • cooler z. B. tube cooler or satellite cooler it is the hot product coming from an oven z. B. cement clinker to cool as much as possible and at the same time heat the cooling air flowing through the cooler as much as possible before it usually enters the furnace as so-called secondary air and is used there as combustion air.
  • the degree of cooling depends on the heat transfer between the product and the cooling / secondary air. While the product amount, the amount of air, the product temperature, the air temperature, each time it enters the cooler, as well as the product properties such. B. the granulometry can not be influenced by the cooler, the cooler operation is essentially determined by three factors: size of the heat transfer surfaces, residence time of the product in the cooler, dust formation and dust cycles.
  • the invention has for its object to increase the thermal efficiency, in particular in the critical hot zone, in the treatment of a granular at least partially scatterable material in a tube cooler, satellite cooler, rotary kiln, drum dryer or the like, without a noticeable increase in the dust load of the gas stream and an increase in the Have to accept the dimensions of the rotary tube.
  • the internals attached to the inner wall of the rotary tube consist, according to the invention, of approximately semicircular, arch-like arch elements protruding into the tube inside, which in their apex region have one each directed towards the inner wall of the tube at their two end edges, narrowing the free arc cross-sectional area and spreading the lifted in the arch elements Good material prevent the edge of the board.
  • each arch element is designed in such a way that the amount of good material that has entered at the end can initially bend freely on both sides and the amount of good material that is subsequently in the arch element remains in the arch for about half a turn of the rotary tube.
  • the spreading of good material is effectively prevented by the fact that the arch elements in their apex area have a rim facing the inner wall of the pipe, which narrows the free arc cross-sectional area, i.e. the rim edges of each arch element on both sides prevent this in particular in the Hot zone undesirable spreading of the good material.
  • it can be used to discharge the crop the edge of the rotating pipe facing the rim of each arch element is higher in its board height, that is to say it is higher-sided than the other edge of the board (facing the good entry of the rotating pipe).
  • the good material After reaching the opposite side of the rotary tube after half a turn of the rotary tube, the good material runs out of the arch element, without being scattered, onto the material-free tube wall opposite the total good material kidney, which in turn leads to an enlarged good material surface area and an improved heat transfer.
  • the good material is simultaneously circulated in the arch elements, which can be favored by strips which, at least in the apex area of the arch elements, are arranged approximately parallel to the axis of the rotary tube in order to constantly create new good material surfaces.
  • Fig. 2 shows the cross section through a tube cooler (10) which rotates in the direction of the arrow (11) about its axis.
  • the cooler (10) z.
  • This hot good material lies as a so-called good material kidney (12) with an inclined surface in the lower region of the cooling tube (10) on its inner wall.
  • the tube cooler (10) has internals which consist of so-called curved elements (13, 14, 15, etc.) which are attached to the inner wall of the tube in a detachable and replaceable manner.
  • the arrow (11) indicate the direction of rotation of the tube cooler (10) and the arrow (16) the main flow direction of the hot material
  • the arch elements (13) and (14) of FIG. 2 can be seen in plan view, and it is in Fig.
  • Fig. 1 shows individually drawn enlarged and in perspective an arch element, seen against the main flow direction (16) of the material to be cooled.
  • the direction of rotation of the rotary tube is indicated here by the arrow (11).
  • the curved element (13) has at the end the rim (19) facing the product outlet of the rotary tube (10), which can be seen in FIG.
  • each arch element can advantageously have a higher rim in its rim height than the other rim (20 facing the inlet of the rotating tube) in order to achieve a sufficient accumulation effect for the respective in despite the inclination of the rotating tube in the material flow direction (16) to achieve a higher amount of good material in the arch elements.
  • the arch element (13) or the other arch elements are composed of two parts, which are detachably connected to each other in the region of their crown, z. B. by simple hook connection, bolt connection or other hinge connection (21).
  • the arch elements advantageously each consist of two halves, of which the front half (22) seen in the direction of rotation (11) of the rotary tube (10) is narrower from end to end than the other half (23) of each arch element.
  • the narrow half (22) of each arch element has a stepped recess (24) on its end edge facing the material outlet of the rotary tube (FIG. 1), as a result of which raised material material runs out of the individual arc elements in the region of the rotary tube opposite the material element kidney (12) (10) is facilitated.
  • the broad half (23) (seen in the direction of rotation (11) of the rotary tube rear half) of some or all of the arch elements can have through openings (26) such as, for. B. have slots for the passage of the fine material located in the respective arch element.
  • strips extending approximately parallel to the axis of the rotary tube and circulating the good material located in the arch element can be arranged, of which the strip (27) is shown in dashed lines in FIG. 1 in the arch element (13). These strips can also have a promotional or stowage effect on the goods, e.g. B. when emptying the respective arch element.
  • Each arch element (13, 14, 15, etc.) is designed so that the quantity of good material that has occurred z. B. (18) can initially bend freely on both sides and the amount of material thereafter located in the arch element (18a) remains in the arc element for about half a cooler revolution. Scattering of good material is effectively prevented by the onboard ends (19, 20) on both ends, the onboard edge (19), as already mentioned, pointing towards the good outlet being advantageously higher-sided due to the inclination of the cooling tube. After reaching the opposite side of the rotary tube after about half a turn of the rotary tube, the good material can run out of the narrow half (22) of each curved element.
  • the good material without being scattered into the cooling air flow, reaches the material-free inner wall of the rotary tube (10) opposite the good material kidney (12), which in turn leads to an enlarged material surface and thus to an improved heat transfer.
  • the material in the arch elements is simultaneously turned over by the strips (27) in order to create new heat-radiating surfaces.
  • the arc elements consist of two halves (22) and (23), for. B. cast from heat-resistant cast steel, assembly is facilitated and thermal expansion are controlled.
  • the arch elements are expediently attached to the rotary tube against Wear-protected holding pieces welded into the rotary tube casing, namely at two points on the wide half (23) and at one point (28) on the narrow half of the bend (22), so that there is a 3- for the entire bend (13) Point attachment results.
  • the arch elements themselves as well as their wear protection can consist of steel, cast iron, ceramic or the like wear-resistant material.
  • the built-in elbow elements can be designed so that they do not scatter the good material in the hot zone, but allow a gradually increasing material scatter at the transition to the cold zone, by z.
  • the front side wheels of the arch elements are formed ever lower and / or an oblique arc (25) is selected.
  • the elbow elements are fastened to the inner wall of the rotary tube on holding pieces projecting from it by means of bolts or screws. Through bolts in the pipe jacket are not necessary. Holding pieces that do not have built-in arch elements have the function of spiral strips for the good material kidney (12).
  • the arch elements can be cylindrically or spherically curved or composed of flat surfaces.
  • the material dwell time in the rotary tube is essentially influenced by the density of the built-in arrangement, the height of the front-side rim wheels (19, 20) of the arch elements, the lanes formed (17) between the built-in components, the direction of spreading for the inlet or outlet, the arrangement and number of conveyor strips, etc.
  • the rotary tube internals according to the invention create the possibility of tube coolers, Rotary tube ovens or the like - even afterwards - easy to optimize, since the final properties of the product to be treated such as B. density, porosity, thermal conductivity, grain size distribution in advance are only predictable to a limited extent.
  • the conception of rotary tube internals according to the invention makes it possible to favorably influence the dwell time of the good material in the rotary tube, the dust formation and dust cycles and thus ultimately also the quality of the heat transfer between good material and gas by means of a wide variety of variable arrangement, combination, exchange etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Furnace Details (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Drying Of Solid Materials (AREA)
  • Incineration Of Waste (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Eléments incorporés pour refroidisseurs tubulaires, refroidisseurs de satellites, fours à tambour tournant, séchoir à tambour ou appareils analogues servant à améliorer le transfert de la chaleur entre un produit granulé ayant au moins en partie un pouvoir de dispersion, tel que par exemple du clinker et un courant de gaz tel que par exemple de l'air de refroidissement, éléments incorporés caractérisés en ce que ces éléments fixes sur la paroi intérieure du tube directement ou indirectement consistent en des éléments d'arceau (13, 14, 15) du type d'une voûte de forme à peu près semi-circulaire vu en section transversale, faisant saillie à l'intérieur du tube, éléments qui présentent dans la zone de leur sommet sur les deux bords frontaux une bordure (19, 20) orientée vers la paroi intérieure du tube, rétrécissant la surface libre de la section transversale et empêchant la dispersion du produit soulevé se trouvant dans les éléments d'arceau.
  2. Eléments incorporés de tube tournant selon la revendication 1, caractérisés en ce que la bordure (19), tournée vers la sortie du produit du tube tournant, de chaque élément d'arceau a un bord qui est plus haut que l'autre bordure (20) (tournée vers l'entrée du produit du tube tournant).
  3. Eléments incorporés selon les revendications 1 ou 2, caractérisé en ce que les éléments (13, 14, 15) sont fixés en étant répartis régulièrement autour de la paroi intérieure du tube de façon à pouvoir être détachés de celle-ci.
  4. Eléments incorporés selon la revendication 3, caractérisés en ce que les éléments d'arceau disposés en cercle de cercles voisins (a), b), c), d)) sont disposés de façon décalée du côté frontal les uns par rapport aux autres de telle façon qu'entre les éléments voisins ou dans le sens de rotation du tube (11) il se forme des voies de transport du produit (17), qui s'étendent obliquement par rapport aux génératrices du tube tournant (10).
  5. Eléments incorporés de tube tournant selon l'une des revendications 1 à 4, caractérisés en ce que les éléments d'arceau sont respectivement composés d'au moins deux parties, qui sont reliées l'une à l'autre de façon détachable dans la zone de leur voûte au sommet.
  6. Eléments incorporés selon la revendication 5, caractérisés en ce que les éléments d'arceau consistent respectivement en deux moitiés, dont la moitié antérieure (22) vue dans le sens de rotation (11) du tube tournant (10) est de côté frontal à côté frontal plus étroite que l'autre moitié (23) de chaque élément d'arceau.
  7. Eléments incorporés selon la revendication 6, caractérisés en ce que la marche étroite (22) de chaque élément d'arceau est formée par un ressaut (24) à gradins de son bord frontal tournée vers la décharge du produit (16) du tube tournant.
  8. Eléments incorporés selon la revendication 6 ou 7, caractérisés en ce que la marche large (23) (la marche postérieure vue dans le sens de rotation (11) du tube tournant) de quelques éléments d'arceau ou aussi de tous les éléments d'arceau présente des ouvertures de passage (26) dans la zone du produit fin se trouvant dans chaque élément d'arceau.
  9. Eléments incorporés de tube tournant selon l'une des revendications 1 à 8, caractérisés en ce qu'au moins dans la zone du sommet des éléments d'arceau (13) sont disposés des barreaux (27) s'étendant à peu près parallèlement à l'axe du tube tournant, retournant le produit qui se trouve dans l'élément d'arceau.
EP89117507A 1988-11-05 1989-09-22 Aube pour cylindres de refroidissement, fours à tambour rotatif ou installations similaires Expired - Lifetime EP0367956B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89117507T ATE96223T1 (de) 1988-11-05 1989-09-22 Einbauten fuer rohrkuehler, drehrohroefen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837607 1988-11-05
DE3837607A DE3837607A1 (de) 1988-11-05 1988-11-05 Einbauten fuer rohrkuehler, drehrohroefen oder dergleichen

Publications (2)

Publication Number Publication Date
EP0367956A1 EP0367956A1 (fr) 1990-05-16
EP0367956B1 true EP0367956B1 (fr) 1993-10-20

Family

ID=6366569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117507A Expired - Lifetime EP0367956B1 (fr) 1988-11-05 1989-09-22 Aube pour cylindres de refroidissement, fours à tambour rotatif ou installations similaires

Country Status (6)

Country Link
US (1) US4995809A (fr)
EP (1) EP0367956B1 (fr)
JP (1) JPH02176387A (fr)
AT (1) ATE96223T1 (fr)
DE (2) DE3837607A1 (fr)
DK (1) DK172088B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208248A1 (de) * 2002-02-26 2003-09-04 Kloeckner Humboldt Wedag Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US5515620A (en) * 1994-11-10 1996-05-14 Gencor Industries, Inc. Method and apparatus of rotatable drum dryer with flights releasably secured in different orientations
US5845591A (en) * 1996-08-08 1998-12-08 Westinghouse Electric Corporation Branch pipe for a rotary combustor
ES2203750T3 (es) * 1997-11-18 2004-04-16 Magotteaux International Dispositivo de fijacion de elevadores en un enfriador tubular rotativo de fabrica de cemento.
ES2202540T3 (es) * 1997-11-18 2004-04-01 Magotteaux International Dispositivo de proteccion de elevadores en un refrigerador tubular rotativo de fabrica de cemento.
GB2424057A (en) * 2005-03-01 2006-09-13 Desmond Whiteley Increasing the throughput potential of a rotating cement kiln
PL1909051T3 (pl) * 2006-10-04 2018-10-31 Dieffenbacher GmbH Maschinen- und Anlagenbau Bęben lub segment bębna do urządzenia suszącego do materiału sypkiego i sposób wytwarzania bębna lub segmentu bębna
FR2944344B1 (fr) * 2009-04-10 2013-12-27 Inst Francais Du Petrole Four tournant pour traitement thermique de materiaux solides
CN107188223B (zh) * 2017-07-19 2020-02-04 攀钢集团研究院有限公司 用于硫酸法钛白生产的转窑
CN109654838B (zh) * 2019-02-19 2024-02-27 扬州快乐机械有限公司 一种干燥机的分仓
WO2021106008A1 (fr) * 2019-11-28 2021-06-03 Dhokey Narendra Réacteur à contre-courant

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Publication number Priority date Publication date Assignee Title
DE1212845B (de) * 1960-11-22 1966-03-17 American Cement Corp Drehrohrofen
DE2728175C2 (de) * 1977-06-23 1984-05-10 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Trocknungsvorrichtung für Zucker mit einem Drehrohr
BE858730A (fr) * 1977-09-15 1978-01-02 Obourg Sa Ciments Procede et dispositif pour augmenter les echanges calorifiques entre matiere solide et gaz, dans un four rotatif a ciment
US4189300A (en) * 1978-08-28 1980-02-19 Mechtron International Corporation Rotating drum dryer apparatus
FR2441682A1 (fr) * 1978-11-17 1980-06-13 Creusot Loire Dispositif pour la preparation de produits enrobes bitumineux pour revetements routiers
US4338732A (en) * 1980-12-15 1982-07-13 Allis-Chalmers Corporation Lifter cage for asphalt plant, dryers and drum mixers
DE3119108A1 (de) * 1981-05-14 1982-12-02 O & K Orenstein & Koppel AG, 4600 Dortmund "waermetauscher fuer rieselfaehiges gut"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208248A1 (de) * 2002-02-26 2003-09-04 Kloeckner Humboldt Wedag Einbauten für Rohrkühler, Drehrohröfen oder dergleichen

Also Published As

Publication number Publication date
US4995809A (en) 1991-02-26
ATE96223T1 (de) 1993-11-15
DK548889A (da) 1990-05-07
DE58905971D1 (de) 1993-11-25
DK548889D0 (da) 1989-11-03
DK172088B1 (da) 1997-10-20
EP0367956A1 (fr) 1990-05-16
DE3837607A1 (de) 1990-05-10
JPH02176387A (ja) 1990-07-09

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