EP1580509B1 - Embouchure d'un four rotatif - Google Patents

Embouchure d'un four rotatif Download PDF

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Publication number
EP1580509B1
EP1580509B1 EP05006212A EP05006212A EP1580509B1 EP 1580509 B1 EP1580509 B1 EP 1580509B1 EP 05006212 A EP05006212 A EP 05006212A EP 05006212 A EP05006212 A EP 05006212A EP 1580509 B1 EP1580509 B1 EP 1580509B1
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EP
European Patent Office
Prior art keywords
hollow
rotary
radially
cooling
discharge
Prior art date
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Active
Application number
EP05006212A
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German (de)
English (en)
Other versions
EP1580509A1 (fr
Inventor
Edgar Stöcker
Karl Schinke
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.)
KHD Humboldt Wedag AG
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KHD Humboldt Wedag AG
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Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP1580509A1 publication Critical patent/EP1580509A1/fr
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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
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/224—Discharge ends
    • 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 the Gutaus strictde a rotary kiln for the thermal treatment of flour-like materials such as cement raw meal for the production of cement clinker, with a rotary kiln casing at the outlet end outside by far concentrically surrounding outer tube, the front end of the double sheath is closed by distributed around the circumference heat-resistant leakage protection segments, each consisting of one-piece hollow angle bodies with axial hollow legs and radially inwardly directed hollow lugs, which latter support the refractory rotary kiln lining, wherein the cavities of both the axial leg and the inwardly directed lugs of cooling air can be flowed through.
  • the outlet end of a rotary kiln in particular for the production of cement clinker from cement raw meal is subject to high stresses, namely mechanical stresses due to surface wear due to overflowing over the outlet edge good as cement clinker, by passing solid components of the gas stream and by deformations of the rotary kiln shell, and high thermochemical stresses by contact with the hot good and with the flowing from the clinker cooler in the outlet end of the rotary kiln hot secondary air, by the radiation of the hot burner flame of the rotary kiln and by contact with the solid and gaseous components contained in the gas stream. From the design and equipment of the outlet of the rotary kiln crucially depends on its durability and thus the availability of the entire cement clinker production line.
  • the cooled from the inside stone retaining lugs of the leakage protection segments are exposed to a high risk of overheating, which is given by overheated stone holding the risk of deformation of the entire rotary kiln outlet end.
  • the fixings of the leakage protection segments lie precisely in the area of the stone retaining lugs and within the same, so that their cooling and fastening taking place from inside is endangered.
  • the invention has for its object to make the Gutaus Releasede in a rotary kiln, in particular for the production of cement clinker so that the life of the rotary kiln and the increasing stresses such.
  • the radially inwardly directed hollow stone retaining lugs of the leakage protection segments according to the invention are angled inwards at an angle of 90 °, that is to say with a rectangular stone contact surface, standard bricks can be used for the refractory lining of the rotary kiln.
  • the risk of deformation of the highly stressed rotary kiln outlet end is minimized.
  • the wall thicknesses of the formed as a heat-resistant cast body angular hollow leakage protection segments are evenly distributed over the entire cast body. Thus, a uniform temperature distribution is achieved in all distributed around the circumference of internally cooled leakage protection segments and thermal stresses are avoided.
  • the rotary kiln leakage protection segments according to the invention are cooled by targeted cooling air flow.
  • the radially inner regions of the axial hollow legs asde povertyzströmströmungskanäle, the radially inwardly directed hollow stone holding lases asde povertyumlenk Schemee and the radially outer regions of the axial hollow legs asde povertyabströmungskanäle are cooled by targeted cooling air flow.
  • the leakage protection segments 13 each consist of one-piece hollow angle bodies whose axial hollow through-flow of cooling air leg 15 are plugged into the likewise formed as a hollow body support arms 14 and are secured there by radial bolts 16. At 17, the view is displayed on a screw head.
  • the one-piece leakage protection segments 13 have radially inwardly directed lugs 18 (stone retaining lugs), which are also hollow and can be flowed through by cooling air.
  • the radially inner portions of the axial hollow legs 15 are formed as cooling air inflow channels, the radially inwardly directed hollow lugs 18 as cooling air deflection portions and the radially outer portions of the axial hollow legs 15 asde povertyabströmungskanäle through which the cooling air at 22 exits.
  • the radially outer walls of the formed as a hollow body and also flowed through by cooling air support arms 14 may each form the partition wall between thede povertyzuströmungskanal and thedeluftabströmungskanal.
  • the radially outer walls of the hollow support arms 14 may each have a radially inwardly located within the hollow stone retaining nose 18 Luftleitnase 23.
  • hollow stone holding lugs 18 are angled away at right angles from their hollow axial legs 15, refractory standard stones can also be securely supported with the lugs of the leakage protection segments according to the invention. With 26 and 27 stone retaining rings are still displayed, which are attached to the inner wall of the rotary kiln pipe 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Drying Of Solid Materials (AREA)
  • Passenger Equipment (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (4)

  1. Extrémité de sortie d'un four tubulaire rotatif de traitement thermique de matériaux poudreux, par exemple de la poudre brute de ciment, en vue de la préparation de klinker de ciment, qui présente un tube extérieur (12) qui entoure concentriquement et à distance le tube d'enveloppe (10) du four tubulaire rotatif à son extrémité de sortie, l'extrémité frontale de la double enveloppe étant fermée par des segments réfractaires (13) de protection de la sortie répartis à la périphérie, constitués de corps coudés creux d'un seul tenant qui présentent une branche creuse axiale (15) et des becs creux (18) orientés radialement vers l'intérieur et qui soutiennent le revêtement réfractaire du four rotatif, les espaces creux des branches axiales (15) et les becs (18) orientés vers l'intérieur pouvant être traversés par de l'air de refroidissement,
    caractérisée par les caractéristiques suivantes :
    (a) des bras de support (14) qui débordent du bord de la sortie du four rotatif sont répartis à la périphérie extérieure du tube (10) d'enveloppe du four tubulaire rotatif,
    (b) les bras de support (14) sont configurés comme corps creux sur lesquels les branches creuses axiales (15) des segments creux coudés (13),de protection de la sortie sont enfichées,
    (c) la paroi radialement extérieure des bras de support (14) configurés comme corps creux forme la paroi de séparation entre .un canal radialement intérieur (21) d'amenée d'air de refroidissement et un canal radialement extérieur (22) d'évacuation d'air de refroidissement,
    (d) les becs creux (18) orientés radialement vers l'intérieur des segments (13) de protection de la sortie sont configurés comme zones de déviation de l'air de refroidissement entre le canal radialement intérieur d'amenée d'air de refroidissement et le canal radialement extérieur (22) d'évacuation de l'air de refroidissement.
  2. Extrémité de sortie d'un four rotatif selon la revendication 1, caractérisée en ce que les parois situées radialement à l'extérieur des bras de support creux (14) présentent toutes un bec (23) de guidage d'air situé radialement à l'intérieur du bec (18) du segment de protection de la sortie (bec de maintien de bloc).
  3. Extrémité de sortie d'un four rotatif selon la revendication 1, caractérisée en ce qu'aux parois situées radialement à l'extérieur des bras de support creux (14), sur leur extrémité non tournée vers les segments (13) de protection de la sortie, se raccordent des tôles de guidage (24) réparties à la périphérie qui divisent l'espace annulaire formé du tube (10) d'enveloppe du four rotatif et du tube extérieur (12) en le canal radialement intérieur (21) d'amenée d'air de refroidissement et le canal radialement extérieur (22) d'évacuation de l'air de refroidissement.
  4. Extrémité de sortie d'un four rotatif selon la revendication 1, caractérisée en ce que l'épaisseur de paroi des segments creux coudés (13) de protection de la sortie configurés comme corps moulés est répartie uniformément sur l'ensemble du corps moulé.
EP05006212A 2004-03-26 2005-03-22 Embouchure d'un four rotatif Active EP1580509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004014872A DE102004014872A1 (de) 2004-03-26 2004-03-26 Auslaufende eines Drehrohrofens
DE102004014872 2004-03-26

Publications (2)

Publication Number Publication Date
EP1580509A1 EP1580509A1 (fr) 2005-09-28
EP1580509B1 true EP1580509B1 (fr) 2007-08-15

Family

ID=34854066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05006212A Active EP1580509B1 (fr) 2004-03-26 2005-03-22 Embouchure d'un four rotatif

Country Status (5)

Country Link
EP (1) EP1580509B1 (fr)
AT (1) ATE370377T1 (fr)
DE (2) DE102004014872A1 (fr)
DK (1) DK1580509T3 (fr)
ES (1) ES2290804T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936652A (zh) * 2010-09-05 2011-01-05 江苏金能环境科技有限公司 回转窑热端窑口保护罩
CA2858156C (fr) * 2011-12-23 2018-12-04 Fives Fcb Dispositif de refroidissement d'une embouchure d'un four tubulaire rotatif par soufflage d'air frais
CN104329938B (zh) * 2014-10-31 2016-09-28 章丘华明水泥有限公司 回转窑风冷装置
DE102018220727A1 (de) * 2018-11-30 2020-06-04 Thyssenkrupp Ag Ofen mit einem Schutzsegment am Ofenauslauf

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE561297C (de) * 1930-03-15 1932-10-12 Fried Krupp Grusonwerk Akt Ges Kuehlvorrichtung fuer das Austragende von Drehrohroefen
DE938839C (de) * 1953-05-08 1956-02-09 Miag Vertriebs Gmbh Gekuehlter Auslauf fuer Drehoefen
DE1558056B2 (de) * 1967-02-21 1972-12-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Befestigungsvorrichtung fuer auslaufschutzsegmente am luftgekuehlten auslaufring fuer drehrohroefen, insbesondere zur zementherstellung
DE2160300C3 (de) * 1971-12-04 1975-05-07 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Abstandshalter zwischen den Mänteln eines doppelwandigen, Temperaturdifferenzen ausgesetzten Rohres oder Behälters
DE2235560C3 (de) * 1972-07-20 1979-03-29 Karl Steffens Gmbh, 4032 Lintorf Vorrichtung zum Kuhlen des aus metallenen Segmenten bestehenden Auslaufringes eines Drehrohrofens
DE2229951C2 (de) * 1972-06-20 1974-02-14 Karl Steffens Gmbh, 4032 Lintorf Verfahren und Vorrichtung zum Kühlen von aus metallenen Segmenten bestehenden Auslaufringen an Drehrohröfen, insbesondere zur Zementherstellung
DE2329061A1 (de) * 1973-06-07 1975-01-02 Kloeckner Humboldt Deutz Ag Luftgekuehlter auslaufring fuer einen drehrohrofen
FR2410802A1 (fr) * 1977-12-05 1979-06-29 Fives Cail Babcock Dispositif de protection de l'embouchure d'un four rotatif
FR2618215B1 (fr) * 1987-07-17 1990-03-30 Fives Cail Babcock Dispositif de protection de l'embouchure d'un four rotatif.
DE4325303A1 (de) * 1993-07-28 1995-02-02 Kloeckner Humboldt Deutz Ag Drehrohrofen zur Wärmebehandlung fließfähiger Materialien

Also Published As

Publication number Publication date
EP1580509A1 (fr) 2005-09-28
DE102004014872A1 (de) 2005-10-13
DK1580509T3 (da) 2007-12-03
ATE370377T1 (de) 2007-09-15
ES2290804T3 (es) 2008-02-16
DE502005001207D1 (de) 2007-09-27

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