EP0108888B1 - Installation pour le traitement thermique de matière à grain fin - Google Patents

Installation pour le traitement thermique de matière à grain fin Download PDF

Info

Publication number
EP0108888B1
EP0108888B1 EP83109193A EP83109193A EP0108888B1 EP 0108888 B1 EP0108888 B1 EP 0108888B1 EP 83109193 A EP83109193 A EP 83109193A EP 83109193 A EP83109193 A EP 83109193A EP 0108888 B1 EP0108888 B1 EP 0108888B1
Authority
EP
European Patent Office
Prior art keywords
cooling air
duct
exhaust gas
opens
precalcination
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
EP83109193A
Other languages
German (de)
English (en)
Other versions
EP0108888A1 (fr
Inventor
Detlev Dipl.-Ing. Kupper
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 EP0108888A1 publication Critical patent/EP0108888A1/fr
Application granted granted Critical
Publication of EP0108888B1 publication Critical patent/EP0108888B1/fr
Expired legal-status Critical Current

Links

Images

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 specially adapted for rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones

Definitions

  • the invention relates to a plant for the heat treatment of fine-grained material, in particular for the production of cement, with a cyclone preheater consisting of a plurality of stages arranged one above the other, a rotary kiln, a cooler and a precalcination zone formed by the kiln exhaust gas line between the rotary kiln and the cyclone preheater and supplied with additional fuel is flowed through by the exhaust gases of the rotary kiln essentially from the bottom up and into which two cooling air lines connected to the cooler open.
  • a cyclone preheater consisting of a plurality of stages arranged one above the other, a rotary kiln, a cooler and a precalcination zone formed by the kiln exhaust gas line between the rotary kiln and the cyclone preheater and supplied with additional fuel is flowed through by the exhaust gases of the rotary kiln essentially from the bottom up and into which two cooling air lines connected to the cooler
  • This known embodiment has various disadvantages. Due to the multiple cross-sectional constrictions of the furnace exhaust pipe, the result is a relatively complicated construction which is not suitable for retrofitting existing systems. In the area of the cross-sectional constrictions of the furnace exhaust pipe there is also the risk of interfering material deposits. Furthermore, since the material to be preheated and the fuel are introduced into the furnace exhaust line independently of one another at different points, the heat transfer from the fuel via the gas to the material is somewhat less favorable.
  • the invention is based on the object of further improving this known system so that a particularly high degree of deacidification of the raw material and good combustion of the fuel result.
  • Deacidification or precalcination means the expulsion of CO 2 from CaC0 3 according to the following equation:
  • Recarbonization is the reverse process.
  • already deacidified material (CaO) due to a high CO 2 CO 2 takes -Partialdruk- kes or due to low material temperature again.
  • the invention is now based on the knowledge that the CO z partial pressure can be reduced and the stagnant deacidification reaction can be progressed by a second cooling air line that opens into the furnace exhaust line in a higher position. It is essential, however, that the caused by the further supply of cooling air, the CO 2 partial pressure is reduced without reducing the temperature.
  • the upper cooling air line is also provided with a supply for additional fuel.
  • the degree of deacidification initially increases suddenly in the first pre-calcining section (ie from the confluence of the lower cooling air line to the confluence of the upper cooling air line).
  • the CO 2 concentration is diluted by the additional amount of tertiary air supplied via the upper cooling air line. This results in a further sharp increase in the degree of deacidification and a good burnout of the fuel.
  • the solution according to the invention enables a substantial increase in the efficiency of the precalcination zone without any significant additional technical outlay on the plant.
  • the system according to FIG. 1 contains a rotary kiln 1, a multi-stage cyclone preheater of known type shown only partially, namely only with regard to the lowest cyclone stage 2, and an oven exhaust line 3 leading from the rotary kiln 1 to the lowest cyclone stage 2, which forms the precalcination zone.
  • a line 4 leads from the cooler (not illustrated) to the furnace exhaust gas line 3.
  • the line 4 is divided into a lower and an upper cooling air line 4 a, 4 b, which open into the furnace exhaust gas line 3 at different heights.
  • the lower cooling air line 4a opens approximately in the middle and the upper cooling air line 4b approximately tangentially into the furnace exhaust line 3. Both of the cooling air lines 4a, 4b have a line part 4'a or 4'b directed obliquely downwards before they open into the furnace exhaust gas line 3.
  • Feeds 5, 6 for additional fuel are provided near the mouth of the cooling air lines 4a, 4b. Furthermore, the good discharge line 7 (not shown) of the second lowest cyclone stage of the multi-stage cyclone preheater opens into the lower cooling air line 4a.
  • the fuel supplied via the supply 5 mixes with the preheated material entered via the line 7 and the cooling air supplied via the line 4a, so that when it enters Fuel / good-air mixture in the furnace exhaust pipe 3 uses spontaneous combustion of the fuel on the good.
  • the degree of deacidification (p) thus rises abruptly in this first precalcination path s, which extends from the confluence of the lower cooling air line 4a to the confluence of the upper cooling air line 4b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Claims (5)

1. Installation de traitement thermique de matière à granulométriefine, en particulier de production de ciment, comprenant un réchauffeur à cyclones se composant de plusieurs étages superposés, un four tubulaire rotatif, un réfrigérant, ainsi qu'une zone de précalcination alimentée en un complément de combustible et formée par la section de la conduite des gaz sortant du four comprise entre le four tubulaire rotatif et le réchauffeur à cyclones, cette zone de précalcination étant balayée par les gaz sortant du four tubulaire essentiellement de bas en haut, et deux conduites d'arrivée d'air froid raccordées au réfrigérant débouchant dans cette zone de précalcination, installation caractérisée par les particularités suivantes:
a) les deux conduites d'arrivée d'air froid (4a, 4b) débouchent à des niveaux différents dans la conduite (3) des gaz sortant du four;
b) les deux conduites d'arrivée d'air froid (4a, 4b) sont équipées d'arrivées (5, 6) du complément de combustible à proximité de leur embouchure dans la conduite (3) des gaz sortant du four;
c) la conduite (7) de décharge de la matière de l'avant-dernier étage inférieur des cyclones débouche dans la conduite inférieure (4a) d'arrivée d'airfroid.
2. Installation selon la revendication 1, caractérisée en ce que la conduite supérieure (4b) d'arrivée d'air froid débouche tangentiellement dans la conduite (3) des gaz sortant du four.
3. Installation selon la revendication 1, caractérisée en ce que la conduite inférieure (4a) d'arrivée d'air froid débouche dans le milieu de la conduite (3) des gaz sortant du four.
4. Installation selon la revendication 1, caractérisée en ce que la longueur (Si ) du premier trajet de précalcination allant de l'embouchure de la conduite inférieure (4a) à l'embouchure de la conduite supérieure (4b) d'arrivée d'air froid est de 4 à 8, de préférence de 5 à 6 m.
5. Installation selon la revendication 1, caractérisée en ce que la longueur (s2) du second trajet de précalcination allant de l'embouchure de la conduite supérieure (4b) d'arrivée d'air froid à l'étage inférieur (2) des cyclones est de 7 à 15, de préférence de 9 à 12 m.
EP83109193A 1982-10-12 1983-09-16 Installation pour le traitement thermique de matière à grain fin Expired EP0108888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823237689 DE3237689A1 (de) 1982-10-12 1982-10-12 Anlage zur waermebehandlung von feinkoernigem gut
DE3237689 1982-10-12

Publications (2)

Publication Number Publication Date
EP0108888A1 EP0108888A1 (fr) 1984-05-23
EP0108888B1 true EP0108888B1 (fr) 1986-03-12

Family

ID=6175479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109193A Expired EP0108888B1 (fr) 1982-10-12 1983-09-16 Installation pour le traitement thermique de matière à grain fin

Country Status (6)

Country Link
US (1) US4514170A (fr)
EP (1) EP0108888B1 (fr)
JP (1) JPS59137350A (fr)
DE (2) DE3237689A1 (fr)
ES (1) ES526398A0 (fr)
ZA (1) ZA837133B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK443383A (da) * 1983-09-28 1985-03-29 Smidth & Co As F L Fremgangsmaade og apparat til bortbraending af organiske bestanddele i raafosfat
DE3420078A1 (de) * 1984-05-29 1985-12-05 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur waermebehandlung von feinkoernigem gut
JPS60264350A (ja) * 1984-06-11 1985-12-27 秩父セメント株式会社 白セメントクリンカの製造方法とその装置
DE3522272A1 (de) * 1985-03-22 1986-09-25 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur waermebehandlung von feinkoernigem gut
DE3520058A1 (de) * 1985-06-04 1986-12-04 O & K Orenstein & Koppel Ag, 1000 Berlin Verfahren zur waermebehandlung von feinkoernigem gut
US4715811A (en) * 1985-07-01 1987-12-29 Fuller Company Process and apparatus for manufacturing low sulfur cement clinker
DE3701967A1 (de) * 1987-01-23 1988-08-04 Krupp Polysius Ag Vorrichtung zur waermebehandlung von feinkoernigem gut
DE3703596A1 (de) * 1987-02-06 1988-08-18 Kloeckner Humboldt Deutz Ag Verfahren und vorrichtung zur herstellung von zement aus zementrohmehl
DE3725512A1 (de) * 1987-07-29 1989-02-09 Kettenbauer Gmbh & Co Verfahre Schwebegas-reaktor
DE3736905A1 (de) * 1987-10-30 1989-05-11 Krupp Polysius Ag Verfahren und vorrichtung zur waermebehandlung von feinkoernigem gut
DE3829853C1 (fr) * 1988-09-02 1989-11-30 O & K Orenstein & Koppel Ag, 1000 Berlin, De
DK163089A (da) * 1989-04-05 1990-10-06 Smidth & Co As F L Reduktion af emission af nitrogenoxide (nox) fra et ovnanlaeg
DE4002553A1 (de) * 1990-01-30 1991-08-01 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur waermebehandlung von feinkoernigem gut, insbesondere zur herstellung von zementklinker
DE4123306C2 (de) * 1991-07-13 2000-05-25 Deutz Ag Anlage zur thermischen Behandlung von mehlförmigen Rohmaterialien
JPH0577823U (ja) * 1992-03-26 1993-10-22 日本航空電子工業株式会社 照光パネルスイッチ
FR2691790B1 (fr) * 1992-05-29 1997-09-19 Cle Installation et procede de precalcination de matieres minerales quelconques.
FR2736910B1 (fr) * 1995-07-21 1997-10-10 Technip Cie Installation et procede de calcination de matieres minerales avec emission reduite d'oxydes d'azote
HN1998000031A (es) * 1997-06-11 1999-06-10 Basf Ag Metodo y aparatos mejorados para recuperar la energia de desechos mediante combustion de los mismos hornos industriales .
DE10064971A1 (de) * 2000-12-23 2002-06-27 Kloeckner Humboldt Wedag Anlage zur thermischen Behandlung von mehlförmigen Rohmaterialien
CN102878811A (zh) * 2012-09-28 2013-01-16 长兴国盛耐火材料有限公司 三次风管分岔部位专用预制件

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270227B (de) * 1964-02-28 1968-06-12 Rheinische Kalksteinwerke Verfahren zum Brennen von Mineralien im Drehrohrofen nach dem Gleichstromprinzip
JPS5722908B2 (fr) * 1973-04-11 1982-05-15
FR2229940B3 (fr) * 1973-05-14 1977-03-18 Holderbank Gestion Conseils Sa
DE2350484C2 (de) * 1973-10-08 1983-04-07 Klöckner-Humboldt-Deutz AG, 5000 Köln Anlage zur thermischen Behandlung von feinkörnigem Gut, insbesondere von Zementrohmehl
JPS532646B2 (fr) * 1974-09-30 1978-01-30
DE2602889A1 (de) * 1976-01-27 1977-07-28 Polysius Ag Vorrichtung zur waermebehandlung von feingut
DE2624302C2 (de) * 1976-05-31 1987-04-23 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Durchführung exothermer Prozesse
US4050882A (en) * 1976-11-04 1977-09-27 Allis-Chalmers Corporation Dual variable orifice for reinforced preheater
DE2712239C2 (de) * 1977-03-21 1984-05-10 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und Vorrichtung zur Herstellung von alkaliarmem Zementklinker aus alkalihaltigem Rohmaterial
DE2724654C2 (de) * 1977-06-01 1984-01-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und Einrichtung zum Brennen von feinkörnigem bis staubförmigem Gut, insbesondere von Zementrohmehl
DE2726138A1 (de) * 1977-06-10 1978-12-21 Kloeckner Humboldt Deutz Ag Verfahren und vorrichtung zur herstellung von zementklinker aus feuchtem agglomeriertem zementrohmaterial
DE2736607C2 (de) * 1977-08-13 1984-11-22 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und Vorrichtung zur thermischen Behandlung von feinkörnigem Gut mit heißen Gasen
DE2744042C2 (de) * 1977-09-30 1984-09-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Wärmetauscher zur thermischen Behandlung von feinkörnigem Gut
DE2801161B2 (de) * 1978-01-12 1981-06-25 Babcock Krauss-Maffei Industrieanlagen GmbH, 8000 München Verfahren und Brennen von Sintergut aus karbonatischen Rohstoffen wie z.B. Zementklinker
DE2833774C2 (de) * 1978-08-02 1984-08-16 Klöckner-Humboldt-Deutz AG, 5000 Köln Brennanlage zur Herstellung von mineralischen Brennprodukten, wie Zementklinker aus Rohmehl
US4425092A (en) * 1978-08-02 1984-01-10 Klockner-Humboldt-Deutz Ag System for burning fine-grained material, particularly for the manufacture of cement clinkers
JPS55136154A (en) * 1979-04-03 1980-10-23 Sumitomo Cement Co Method and device for utilizing combustible matter
DE3000494A1 (de) * 1980-01-08 1981-07-09 Krupp Polysius Ag, 4720 Beckum Verfahren und anlage zur waermebehandlung von feinkoernigem gut
DE3100661A1 (de) * 1981-01-12 1982-08-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren zur thermischen behandlung von feinkoernigem gut, insbesondere zur herstellung von zementklinker

Also Published As

Publication number Publication date
EP0108888A1 (fr) 1984-05-23
DE3362549D1 (en) 1986-04-17
DE3237689A1 (de) 1984-04-12
US4514170A (en) 1985-04-30
JPS59137350A (ja) 1984-08-07
ES8405745A1 (es) 1984-06-16
ES526398A0 (es) 1984-06-16
ZA837133B (en) 1984-05-30

Similar Documents

Publication Publication Date Title
EP0108888B1 (fr) Installation pour le traitement thermique de matière à grain fin
DE2247172C3 (de) Anlage zur Herstellung von Zement, Kalk, Tonerde und dgl.
DE2324519C3 (de) Verfahren und Vorrichtungen zur Wärmebehandlung von feinkörnigem Gut
EP0003123A1 (fr) Procédé et dispositif pour précalciner des matières premières carbonées
DE2420322A1 (de) Anlage zum brennen von koernigem oder pulverfoermigem material
DE2558506C2 (de) Verfahren zur thermischen Behandlung von staubförmigem Gut, insbesondere zum Brennen von Zement in mehreren Stufen
DE2324565A1 (de) Verfahren und anlage zur waermebehandlung von feinkoernigem gut
DE2420121A1 (de) Verfahren und anlage zur herstellung von zementklinker
DE2705710A1 (de) Gegenstrombrennverfahren zur erzeugung von branntkalk
EP0002054B1 (fr) Installation pour le traitement thermique de matières pulvérulentes
EP0090144B1 (fr) Procédé et installation pour le traitement thermique de grains fins
DE2522598A1 (de) Verfahren zur waermebehandlung von feinkoernigem gut
EP0078250B1 (fr) Procédé et appareil pour la production de ciment
DE2545933A1 (de) Verfahren und vorrichtung zur waermebehandlung von feinkoernigem gut
DE2705566C2 (de) Anlage zur Wärmebehandlung von Zementrohmehl
DE2759249A1 (de) Verfahren zur herstellung von schwefelarmem zementklinker
EP0144597B1 (fr) Procédé et installation pour le traitement thermique des matériaux en grains fins
DE3426296A1 (de) Verfahren und vorrichtung zur verringerung des stickstoffoxidgehaltes in den abgasen eines zementdrehrohrofens
EP1996884B1 (fr) Calcinateur à réservoir et son utilisation
DE2517552A1 (de) Verfahren zur thermischen behandlung von feinkoernigem gut, insbesondere zum brennen von zement
EP0229231B1 (fr) Brûleur pour la combustion de combustibles avec diminution de la formation des oxydes d'azote
AT390249B (de) Verfahren zur verringerung der emission von waehrend der zementherstellung mit dem trockenverfahren insbesondere im waermetauscherbereich gebildetem so2 und vorrichtung zur durchfuehrung des verfahrens
WO1985004163A1 (fr) Procede de combustion et de frittage de calcaire, de dolomite et autres et installation permettant sa realisation
AT376649B (de) Verfahren zum herstellen von zement und vorrichtung zur durchfuehrung des verfahrens
DE3520056C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19840529

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3362549

Country of ref document: DE

Date of ref document: 19860417

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19870930

BERE Be: lapsed

Owner name: KRUPP POLYSIUS A.G.

Effective date: 19870930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19880601

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881122