EP0252292A2 - Echangeur de chaleur à tambour rotatif - Google Patents

Echangeur de chaleur à tambour rotatif Download PDF

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Publication number
EP0252292A2
EP0252292A2 EP87107994A EP87107994A EP0252292A2 EP 0252292 A2 EP0252292 A2 EP 0252292A2 EP 87107994 A EP87107994 A EP 87107994A EP 87107994 A EP87107994 A EP 87107994A EP 0252292 A2 EP0252292 A2 EP 0252292A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
rotary tube
tube heat
exchanger according
section walls
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.)
Withdrawn
Application number
EP87107994A
Other languages
German (de)
English (en)
Other versions
EP0252292A3 (fr
Inventor
Jochen Patterson
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.)
Giesserei Kohlscheid GmbH
Original Assignee
Giesserei Kohlscheid GmbH
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 Giesserei Kohlscheid GmbH filed Critical Giesserei Kohlscheid GmbH
Publication of EP0252292A2 publication Critical patent/EP0252292A2/fr
Publication of EP0252292A3 publication Critical patent/EP0252292A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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 rotary tube heat exchanger, the cross section of which is divided over a part of its length by section walls into several sectors.
  • Rotary tube heat exchangers of the type mentioned at the outset are known which have been used in long dry rotary furnaces in the cement industry and have ceramic internals which intersect. They were used to dry and heat the fired material through intensive contact with the hot furnace gases. However, these internals caused problems due to thermal expansion when the temperature changes. In addition, they had an undesirable pressure drop in the furnace gases due to the considerable wall thickness and thus due to the reduction in the cross-section through which they flowed Episode. Such heat exchangers have therefore been replaced by those in which chains attached to the jacket wall hang into the cross section through which the flow passes.
  • the object of the present invention is now to provide a rotary tube heat exchanger in which a particularly good heat exchange takes place and difficulties due to thermal expansion are excluded.
  • the central floating bearing common to all permits movements of the radially inner ends of the section walls or plates held by it, so that they can easily follow the thermal expansions that occur.
  • the rotary tube heat exchanger can be designed according to the invention so that the section walls are made of steel.
  • the steel can be chosen in particular as cast steel with regard to its heat resistance according to the respective requirements. Small wall thicknesses are possible, so that the pipe cross-section through which these internals flow is reduced to a small extent and consequently only a negligible drop in pressure occurs.
  • the rotary tube heat exchanger can be designed such that the section walls are pivotally mounted at their radially outer ends about an axis running essentially parallel to the axis of the rotary tube.
  • the rotary tube heat exchanger can also be designed according to the invention in such a way that the section walls each have a reinforced head piece at their radially outer ends, which is mounted in a groove of a bearing piece fastened to the jacket wall.
  • the head piece is axially inserted into the channel from one end, from which it cannot emerge in the radial direction.
  • the gutter allows the section wall to emerge, but not the head piece. It enables pivoting in relation to the longitudinal axis of the gutter.
  • the rotary tube heat exchanger can be designed according to the invention so that the radially inner ends of the section walls each have a reinforced head piece, which is mounted in a groove of the central floating bearing.
  • the channels of the central floating bearing run parallel to one another and parallel to the channels near the jacket wall. Changes in the length of the section walls lead to a rotation of the central floating bearing about its longitudinal axis.
  • the rotary tube heat exchanger can be designed such that each channel is closed at least at its one axial end by means of a front plate.
  • a section wall is held in a channel by a front plate which is formed in one piece with the channel or can be detachably connected to it. Especially when the longitudinal axis of the rotary tube heat exchanger is in a rich direction inclined, it is sufficient to provide a front panel only at the deepest end of the respective channel. Otherwise, the use of front panels at both ends of the gutter is recommended.
  • the rotary tube heat exchanger can also be designed according to the invention in such a way that the section walls each have a rectilinear guide piece at their radially inner ends, which cooperates with a counter-guide of the central floating bearing.
  • the rotary tube heat exchanger can also be designed according to the invention so that each guide piece forms a dovetail guide with a counter-guide.
  • a plurality of dovetail guides arranged parallel to one another can each be formed.
  • the rotary tube heat exchanger can also be designed according to the invention in such a way that the jacket wall in each sector is provided with at least one blade and the section walls are provided with at least one blade on at least one side.
  • the rotary tube heat exchanger can be designed such that the blades provided on the section walls match those provided on the jacket wall.
  • the rotary tube heat exchanger can be designed according to the invention so that three section walls are provided.
  • section walls lead to a relatively static positioning of the longitudinal axis of the central floating bearing and, in most cases, allow the pipe cross-section to be divided sufficiently into three sectors. However, it is also possible to provide four or more section walls.
  • the rotary tube heat exchanger can also be designed according to the invention so that the central floating bearing is composed of several interconnected components.
  • the rotary tube heat exchanger can finally be designed according to the invention so that it is designed as a tube cooler.
  • Such a cooler can be used, for example, in the context of a satellite cooler in the cement industry, and preferably in the hot section directly behind the comb lining.
  • the secondary air flow and the fired clinker are divided into several flows. In this way, better contact is established between the secondary air flow and the clinker, since each sector works in the same known way as the satellite cooler.
  • the intensive circulation of the material also means that warmer layers of material are mixed with colder ones.
  • the section walls which are then made of highly heat-resistant steel, as well as the blades attached to them, absorb heat from the clinker material and pass it on to the cooling fins Secondary airflow. Overall, the effective surface area of the tube cooler is increased considerably.
  • a cylindrical jacket wall 1 made of steel is provided, which is lined on its inner wall with heat-resistant ceramic elements 2.
  • the jacket wall 1 arranged on the inside of this jacket blade holder 3 are connected, on which projecting blades 4 are arranged in the direction of the center of the tubular cross section.
  • These blades 4 made of cast steel are used to move a material to be cooled, which can be clinker, for example.
  • 3 are with the Man telwand 1 connected three evenly distributed over the circumference bearing holder 5, which protrude towards the inside of the rotary tube heat exchanger.
  • the bearing holders 5 are formed at their most radially inwardly projecting end in the form of a groove 6 which is circular in cross section and has a slot 7 pointing radially inwards.
  • the channels 6 each follow a longitudinal axis which is directed parallel to the axis of the rotary tube heat exchanger.
  • the head 8 of a section wall 9 is made of cast steel.
  • the contour of the head 8 is selected so that it can be pivoted in the channel 6 essentially about its longitudinal axis.
  • the width of the slot 7 of the channel 6 is greater than the wall thickness of the section wall 9. Consequently, the section wall 9 is pivoted about the longitudinal axis of the channel 6.
  • Each section wall 9 has a further head 10 at its other, radially inner end.
  • This head 10 lies in a groove 11 of a central floating bearing 12.
  • the longitudinal axis of the groove 11 runs parallel to the longitudinal axis of the rotary tube heat exchanger. It also has a slot 13 which is wider than it corresponds to the wall thickness of the section wall 9. Consequently, the section wall 9 can also be pivoted about the longitudinal axis of the trough 11 of the floating bearing 12.
  • a total of three section walls 9 are provided, which are pivotally mounted at their ends, as described.
  • Each section wall 9 is provided on both sides with a blade 14. These blades 14 lie opposite one another and are of identical design. They are arranged rotationally symmetrically offset from one another.
  • the troughs 11 of the floating bearing 12 are arranged equidistantly on a pitch circle which is concentric with the longitudinal axis of the rotary tube heat exchanger.
  • Two section walls 9 each form with the associated section of the rotary tube casing a sector 15 in which, when the rotary tube heat exchanger rotates in the direction of arrow 16, material located therein, e.g. Clinker, successively come into contact with the blades and the walls of the casing and the section walls 9.
  • FIG. 2 differs from that according to FIG. 1 essentially in that a central floating bearing 2o is provided, which is composed of several pieces. It consists of a tubular core piece 21, on which four identical outer pieces 22 are placed and fastened by means of screws 23. In the circumferential direction adjacent outer pieces 22 each form a channel 24 in which a head 25 of a section wall 26 is mounted in the manner already described.
  • the longitudinal central axes of the channels 24 lie on a circle which is concentric with the central longitudinal axis of the floating bearing 20. You have seen equal distances from each other in the circumferential direction.
  • each section wall 26 is bent at a small distance from the head 25.
  • Shovels 27 are attached to the section walls 26.
  • FIGS. 3 and 4 Another embodiment of the invention is shown in FIGS. 3 and 4.
  • Three section walls 30 are provided, which have a dovetail guide 31 at their radially inner ends.
  • Each of these dovetail guides 31 slidably cooperates with a corresponding counter-guide 32 of a central floating bearing 33.
  • the three counter guides 32 of the floating bearing 33 are each offset by 60 degrees to one another. They allow a straight-line displacement of the section walls 3o with respect to the floating bearing 33.
  • the section walls 30 can with the jacket wall of the heat exchanger be connected as shown in Fig. 1. In this embodiment, however, a rigid connection of the section walls 3o to the jacket wall is also possible.
  • FIG. 5 shows that the channels, which in the embodiments according to FIGS. 1 and 2 accommodate the heads of the section walls, are delimited at least at one end by a front plate 35, which can be integrally formed.
  • a front plate 35 is sufficient to fix the section walls when the rotary tube heat exchanger is arranged inclined in one direction.
  • a releasable locking plate 36 is arranged, which reliably prevents the heads of the section walls from sliding out even when the longitudinal axis of the rotary tube is arranged horizontally.
  • the section walls, the shovel holder, the bearing holder and the central floating bearing are each made of highly heat-resistant cast steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP87107994A 1986-06-26 1987-06-03 Echangeur de chaleur à tambour rotatif Withdrawn EP0252292A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19868617098 DE8617098U1 (de) 1986-06-26 1986-06-26 Drehrohrwärmetauscher
DE8617098U 1986-06-26

Publications (2)

Publication Number Publication Date
EP0252292A2 true EP0252292A2 (fr) 1988-01-13
EP0252292A3 EP0252292A3 (fr) 1988-03-30

Family

ID=6795910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107994A Withdrawn EP0252292A3 (fr) 1986-06-26 1987-06-03 Echangeur de chaleur à tambour rotatif

Country Status (2)

Country Link
EP (1) EP0252292A3 (fr)
DE (1) DE8617098U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1143217A2 (fr) * 2000-04-06 2001-10-10 Axel Lewandowski Rouleaux chauffants, en particulier pour machines de lamination et appareils de chauffage instantané de liquides
US20110065058A1 (en) * 2009-09-14 2011-03-17 Takasago Industry Co., Ltd. Rotary kiln and product
USRE45360E1 (en) 2002-06-06 2015-02-03 Harbison-Walker Refractories Company Rotary kiln heat exchanger and method of assembling same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200829C (fr) *
DE510396C (de) * 1930-10-18 Fellner & Ziegler Akt Ges Nachgiebig befestigte Rieseleinrichtung in Brenn-, Glueh-, Trockentrommeln
GB524300A (en) * 1939-01-26 1940-08-02 Bartholomeus Mattheus Gunters An improved hinge structure
FR2235183A1 (fr) * 1973-06-28 1975-01-24 Great Lakes Carbon Corp
FR2381266A1 (fr) * 1977-02-22 1978-09-15 Fives Cail Babcock Echangeur de chaleur
US4438605A (en) * 1981-10-19 1984-03-27 Delucia Paul V Continuous, moveable thermal barrier system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE551082C (de) * 1930-03-16 1932-05-28 Eisenwerk Albert Gerlach G M B Drehbare Trocken- und Gluehtrommel
US2728146A (en) * 1952-05-21 1955-12-27 Allis Chalmers Mfg Co Rotary heat exchanger
FR1309321A (fr) * 1961-10-02 1962-11-16 Ciments Du Nord échangeur de chaleur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200829C (fr) *
DE510396C (de) * 1930-10-18 Fellner & Ziegler Akt Ges Nachgiebig befestigte Rieseleinrichtung in Brenn-, Glueh-, Trockentrommeln
GB524300A (en) * 1939-01-26 1940-08-02 Bartholomeus Mattheus Gunters An improved hinge structure
FR2235183A1 (fr) * 1973-06-28 1975-01-24 Great Lakes Carbon Corp
FR2381266A1 (fr) * 1977-02-22 1978-09-15 Fives Cail Babcock Echangeur de chaleur
US4438605A (en) * 1981-10-19 1984-03-27 Delucia Paul V Continuous, moveable thermal barrier system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1143217A2 (fr) * 2000-04-06 2001-10-10 Axel Lewandowski Rouleaux chauffants, en particulier pour machines de lamination et appareils de chauffage instantané de liquides
EP1143217A3 (fr) * 2000-04-06 2003-09-24 Andreas Lewandowski Rouleaux chauffants, en particulier pour machines de lamination et appareils de chauffage instantané de liquides
USRE45360E1 (en) 2002-06-06 2015-02-03 Harbison-Walker Refractories Company Rotary kiln heat exchanger and method of assembling same
US20110065058A1 (en) * 2009-09-14 2011-03-17 Takasago Industry Co., Ltd. Rotary kiln and product
US8529251B2 (en) * 2009-09-14 2013-09-10 Takasago Industry Co., Ltd. Rotary kiln and product

Also Published As

Publication number Publication date
EP0252292A3 (fr) 1988-03-30
DE8617098U1 (de) 1986-08-07

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Inventor name: PATTERSON, JOCHEN