EP2136937B1 - Procédé et dispositif de traitement thermique y compris un procédé et dispositif de séparation ou de classement de matériau chargé - Google Patents

Procédé et dispositif de traitement thermique y compris un procédé et dispositif de séparation ou de classement de matériau chargé Download PDF

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Publication number
EP2136937B1
EP2136937B1 EP08718049.3A EP08718049A EP2136937B1 EP 2136937 B1 EP2136937 B1 EP 2136937B1 EP 08718049 A EP08718049 A EP 08718049A EP 2136937 B1 EP2136937 B1 EP 2136937B1
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EP
European Patent Office
Prior art keywords
rotatable elements
feedstock
separating
classifying
plant according
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.)
Active
Application number
EP08718049.3A
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German (de)
English (en)
Other versions
EP2136937A2 (fr
Inventor
Detlev 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
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ThyssenKrupp Industrial Solutions AG
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Publication of EP2136937A2 publication Critical patent/EP2136937A2/fr
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Publication of EP2136937B1 publication Critical patent/EP2136937B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • the invention relates to a system and a method for heat treatment of feedstock.
  • the WO 01/09548 A1 discloses a plant for heat treatment of feedstock with a combustion chamber for combustible waste located in the vicinity of the calciner. In the combustion chamber, the waste is transported by a turntable on a circular path to the exit.
  • a combustion grate is shown, the grate bars can be flowed through with a cooling medium.
  • the ashes produced by the combustion of solid fuels can fall down between the grate bars.
  • Other heated or coolable grates that are also used for classifying, are from the DE 11 11 571 B , of the DE 518 605 C and he US 1 647 812 A known.
  • the DE 1 801 362 discloses a plant and a process for the heat treatment of good different grain size, wherein coarse material and fine material initially separated preheated from each other and then heat treated together in a rotary kiln. The preheated fines are classified before being fed into the rotary kiln, so that only the grits get into the rotary kiln.
  • DD 0 152 361 describes a method and apparatus for treating ore pellets, wherein the starting material is first preheated, then separated in a classifying the fine fractions and then get only the coarse fractions in an oven.
  • the invention has for its object to improve the system and the method for heat treatment of feedstock, especially in the preheating or calcination of raw materials of the cement or lime industry.
  • the plant according to the invention for the heat treatment of feed comprises a preheater for preheating the feed, a rotary kiln for firing the preheated feed, and arranged between preheater and rotary kiln device for separating or classifying feed into at least two different Komfr risken having a screening device by rotatable Elements, ie a roller grate is formed, wherein the rotatable elements are mounted in bearings and at least partially driven by suitable drive means, and wherein at least a finer grain fraction between the rotatable elements falls through and means are provided for supplying a cooling medium to the rotatable elements.
  • the rotatable elements have a main body and a wear-resistant and / or heat-resistant, outer sheath, wherein the main body provides a running in the direction of its axis of rotation, acted upon by the cooling medium channel, which is in communication with the means for supplying the cooling medium.
  • the outer casing has a wear and / or temperature protection function, while the main body serves as a supporting body, wherein its carrying capacity is significantly increased by the cooling.
  • the feedstock may have a temperature of at least 250.degree. C., in particular of at least 750.degree.
  • the roller grate can be used in these extreme conditions.
  • the screening device is preferably as a roller grate and the rotatable elements are designed as rollers or rollers.
  • the rotatable elements serve for greater Komfrtress as conveying elements and are at least partially driven for this purpose.
  • an insulation can be provided between the outer casing and the base body, so that cost-effective cooling of the base body by means of air is considered.
  • the storage of the rotatable elements is advantageously carried out of the housing, in addition, a cooling of the bearing can be provided.
  • the in the Fig. 1 and Fig. 2 illustrated device 100 for separating or classifying feed material 1 in at least two different grain fractions 2, 3 has a feed opening 4, designed as a roller grate screen 5 and at least one outlet 6 for a finer grain fraction 2 and an outlet opening 7 for a coarser grain fraction 3.
  • the screening device 5 provides a plurality of rollers or rollers formed rotatable elements 8, which are at least partially driven.
  • the finer grain fraction 2 passes between the rotatable elements 8 so that the distance between two adjacent rotatable elements determines the size of the finer grain fraction 2.
  • the distance can be equal or over the length of the grate be formed differently.
  • the distance between adjacent rotatable elements 8 is adjustable.
  • Fig. 1 is indicated by the dashed line 9 wall that 5 different grain fractions could be deducted as Naturalfallgut over the length of the screening device.
  • 5 different grain fractions could be deducted as Naturalfallgut over the length of the screening device.
  • the rotatable elements thus have a conveying function in addition to the separation or classification function.
  • the rotatable elements 8 are mounted in bearings 10, 11 and driven by suitable drive means 12 (shown only schematically in the drawing).
  • the bearings 10, 11 are expediently arranged outside a housing 13 of the device 100 in order to protect them from dust and temperature influences.
  • the rotatable element 8 consists of a base body 8a and a corresponding wear and / or temperature-resistant sheathing 8b, in order to ensure a sufficient service life during processing of the feed material. If appropriate, a suitable insulation 8c can also be provided between the main body 8a and the sheathing 8b.
  • the main body 8a has a channel 8d extending in the direction of its axis of rotation 8e and acted upon by a cooling medium, which channel is connected to means 14 for supplying a cooling medium. It come here liquid and / or gaseous coolant medium, such as water or air, into consideration. Also for the bearings 10, 11 means not shown in detail can be provided for cooling.
  • the screening device 5 can be arranged both horizontally and inclined. In both cases, it may be expedient if a material guiding element 15 is provided between two adjacent rotatable elements 8 in order to avoid unwanted filling of the gusset between the two rollers and thereby to improve the conveying action ( Figure 4 ).
  • the rotatable elements 8 could therefore be designed and mounted in such a way that comminution of such material takes place in the gap between two adjacent rotatable elements 8.
  • FIG. 5 Another way to eliminate any blockages in the gap between two rotatable elements 8 is in Fig. 5 shown. These are means or an element 16 for cleaning the gap, in that this element is arranged below the gap and can be moved up into the gap.
  • the cross-sectional shape of the rotatable elements 8 is by no means limited to a circular shape.
  • different cross-sectional shapes of the rotatable elements 8 are shown.
  • the peculiarity of these elements is that with a synchronous rotation of these elements a substantially constant gap remains.
  • the advantage of an elliptical element ( Fig. 6 ), one triangular in cross section ( Fig. 7 ) or quadrangular element ( Fig. 8 ) with rounded side surfaces is mainly in the better conveying effect.
  • all rotatable elements 8 are driven in the same direction of rotation, whereby regulation of the rotational speed of all or part of the rotatable elements can be provided.
  • FIG. 9 shows a very schematic representation of a plant according to the invention for the heat treatment of feed material.
  • it has a preheater for preheating the feedstock, in particular raw material, a device 100 for separating or classifying feedstock and a rotary kiln for firing the preheated feedstock.
  • the feed material separating or classifying device 100 is disposed between the preheater 200 and the rotary kiln 300 to discharge a grain fraction undesirably fine for the rotary kiln.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Claims (11)

  1. Installation de traitement thermique de matériau de chargement doté d'un dispositif (100) destiné à séparer ou à classifier le matériau de chargement (1) en au moins deux différentes fraction de grains (2, 3), sachant que le dispositif (100) destiné à séparer ou à classifier le matériau de chargement (1) comprend un dispositif de criblage (5) qui est formé par des éléments rotatifs (8)
    et qu'au moins une fraction de grains fins (2) tombe entre les éléments rotatifs et que, de plus, sont prévus des moyens (14) qui sont destinés à amener un fluide de refroidissement aux éléments rotatifs (8) et sachant que, de plus, les éléments rotatifs (8) sont dotés d'un corps de base (8a) et d'une enveloppe extérieure (8b) résistante à l'usure et / ou à la température, sachant que le corps de base (8a) est doté d'un canal (8d) soumis à un fluide de refroidissement, qui, s'étendant dans la direction de l'axe de rotation (8e) est en relation aves les moyens (14) d'amenée de fluide de refroidissement,
    caractérisée en ce que le dispositif (100) destiné à séparer ou à classifier le matériau de chargement (1) est disposé entre un dispositif de préchauffage (200), destiné à préchauffer le matériau de chargement, et un four tubulaire, rotatif, destiné à cuire le matériau de chargement (1) préchauffé, et que les éléments rotatifs (8) sont montés dans des supports (10, 11) et peuvent être entraînés, au moins partiellement, par l'intermédiaire de moyens d'entraînement appropriés (12).
  2. Installation selon la revendication 1, sachant que le dispositif de criblage est réalisé sous la forme d'une grille à rouleaux et que les éléments rotatifs (8) sont réalisés en forme de rouleaux ou de cylindres.
  3. Installation selon la revendication 1, sachant que l'intervalle entre les éléments rotatifs (8) peut être réglé au moins partiellement.
  4. Installation selon la revendication 1, sachant que les éléments rotatifs (8) sont prévus à l'intérieur d'un carter (13) et que les éléments rotatifs (8) sont montés dans des supports (10, 11) qui sont disposés à l'extérieur dudit carter.
  5. Installation selon la revendication 4, sachant que les supports (10, 11) sont dotés de moyens de refroidissement.
  6. Installation selon la revendication 1, sachant que des éléments de guidage de matériau (15) sont prévus entre deux éléments rotatifs (8) voisins.
  7. Installation selon la revendication 1, sachant que des moyens (16), destinés au nettoyage de la fente située entre deux éléments rotatifs, voisins, sont prévus entre deux éléments rotatifs (8) voisins.
  8. Installation selon la revendication 1, sachant que les éléments rotatifs (8) sont dotés d'une forme non circulaire mais que, pendant la rotation, une fente constante demeure entre deux éléments rotatifs voisins.
  9. Procédé de traitement thermique de matériau de chargement, sachant que
    - le matériau de chargement (1) est séparé ou classifié en au moins deux différentes fractions de grains dans un dispositif (100) de séparation ou de classification,
    - au moins une fraction de grains plus fins (2) tombe à travers des éléments rotatifs d'un dispositif de criblage (5) et
    - les éléments rotatifs (8) sont dotés d'un corps de base (8a) et d'une enveloppe extérieure (8b) résistante à l'usure et / ou à la température, et que le corps de base (8a) est doté d'un canal (8d) soumis à un fluide de refroidissement, qui s'étend dans la direction de l'axe de rotation (8e) et auquel est conduit un fluide de refroidissement,
    caractérisé en ce que le matériau de chargement (1) est préchauffé dans un dispositif de préchauffage (200) et cuit dans un four tubulaire rotatif (300), sachant que le matériau de chargement (1) est séparé et / ou classifié entre le dispositif de préchauffage (200) et le un four tubulaire rotatif (300) du dispositif (100) et que, de plus, les éléments rotatifs (8) sont montés dans des supports (10, 11) et entraînés, au moins partiellement, par l'intermédiaire de moyens d'entraînement appropriés (12).
  10. Procédé selon la revendication 9,
    caractérisé en ce que le matériau de chargement (1) du dispositif (100) de séparation ou de classification présente une température d'au moins 250 °C, en particulier d'au moins 750 °C.
  11. Procédé selon la revendication 9,
    caractérisé en ce que la direction de rotation et / ou la vitesse de rotation des éléments rotatifs (8) est modifiable.
EP08718049.3A 2007-04-17 2008-03-19 Procédé et dispositif de traitement thermique y compris un procédé et dispositif de séparation ou de classement de matériau chargé Active EP2136937B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018092A DE102007018092A1 (de) 2007-04-17 2007-04-17 Vorrichtung zum Trennen oder Klassieren von Aufgabegut
PCT/EP2008/053328 WO2008125415A2 (fr) 2007-04-17 2008-03-19 Procédé et dispositif de séparation ou de classement de matériau chargé

Publications (2)

Publication Number Publication Date
EP2136937A2 EP2136937A2 (fr) 2009-12-30
EP2136937B1 true EP2136937B1 (fr) 2014-10-01

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EP08718049.3A Active EP2136937B1 (fr) 2007-04-17 2008-03-19 Procédé et dispositif de traitement thermique y compris un procédé et dispositif de séparation ou de classement de matériau chargé

Country Status (9)

Country Link
US (1) US8235219B2 (fr)
EP (1) EP2136937B1 (fr)
AU (1) AU2008238146B2 (fr)
BR (1) BRPI0808915B1 (fr)
CA (1) CA2681016C (fr)
DE (1) DE102007018092A1 (fr)
DK (1) DK2136937T3 (fr)
WO (1) WO2008125415A2 (fr)
ZA (1) ZA200906311B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010012843U1 (de) * 2010-09-22 2011-12-29 S.B. Schiefer-Erdabbau Und Deponie Gmbh Mehrwellensieb
CN109689232A (zh) 2016-08-18 2019-04-26 奥图泰(芬兰)公司 自清洁的辊筛

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DD152361A1 (de) * 1980-07-03 1981-11-25 Manfred Schoenfeld Verfahren und vorrichtung zur behandlung von erzpellets

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DD152361A1 (de) * 1980-07-03 1981-11-25 Manfred Schoenfeld Verfahren und vorrichtung zur behandlung von erzpellets

Also Published As

Publication number Publication date
BRPI0808915B1 (pt) 2019-10-15
DE102007018092A1 (de) 2008-10-23
AU2008238146A1 (en) 2008-10-23
AU2008238146B2 (en) 2011-10-06
US20100116719A1 (en) 2010-05-13
CA2681016A1 (fr) 2008-10-23
ZA200906311B (en) 2010-05-26
US8235219B2 (en) 2012-08-07
EP2136937A2 (fr) 2009-12-30
WO2008125415A2 (fr) 2008-10-23
BRPI0808915A2 (pt) 2014-08-19
DK2136937T3 (en) 2015-01-12
CA2681016C (fr) 2015-01-06
BRPI0808915A8 (pt) 2015-04-28
WO2008125415A3 (fr) 2008-12-18

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