EP0029541A1 - Process for arranging inserts in material conveying tubes of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material - Google Patents

Process for arranging inserts in material conveying tubes of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material Download PDF

Info

Publication number
EP0029541A1
EP0029541A1 EP80106907A EP80106907A EP0029541A1 EP 0029541 A1 EP0029541 A1 EP 0029541A1 EP 80106907 A EP80106907 A EP 80106907A EP 80106907 A EP80106907 A EP 80106907A EP 0029541 A1 EP0029541 A1 EP 0029541A1
Authority
EP
European Patent Office
Prior art keywords
granular
treatment devices
pourable
pulverulent
possibly
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Withdrawn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
EP80106907A
Other languages
German (de)
French (fr)
Inventor
Wolfgang Dipl.-Ing. Keller
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of EP0029541A1 publication Critical patent/EP0029541A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F26B11/0404—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 with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried
    • F26B11/0418—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 with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried the subdivision consisting of a plurality of parallel tubes, e.g. through which the material to be dried is conveyed in single or multi-pass fashion
    • F26B11/0422—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 with internal subdivision of the drum, e.g. for subdividing or recycling the material to be dried the subdivision consisting of a plurality of parallel tubes, e.g. through which the material to be dried is conveyed in single or multi-pass fashion the tubes having internal members
    • 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

Definitions

  • the invention is directed to a method for arranging internals in material guide tubes of heat treatment devices for powdery to granular, free-flowing, optionally slurried material that can be rotated about an axis and are heatable and coolable from the outside.
  • Rotary tubes or tubes of rotary drums with tube bundles with indirect heating for the heat treatment of powdery to lumpy, free-flowing material quite often have such small diameters that it is no longer possible to crawl in to insert and fix them.
  • half-pipes were previously used, which were welded together after welding or riveting the internals. This procedure is very complex and often causes difficulties due to the manufacturing tolerances of the half-tubes.
  • a particular disadvantage is that the wear of the internals inside the pipe only is difficult to control and that, above all, defective parts cannot be replaced without cutting the pipe. It is also not possible to adapt the equipment for the consecutive heat treatment of different goods with regard to the built-in elements in the material guide tubes to suit the particular goods to be treated.
  • the task is to provide a method with which internals can be arranged in Gut Replacementsrohre heat treatment devices such that the assembly is quick and easy, that close tolerances can be maintained to improve the heat transfer and that the internals are easily interchangeable.
  • the object is achieved in that the internals for each tube are prefabricated as a unit and, as such, are inserted into the tube and fastened interchangeably.
  • the installation unit can be welded, riveted or screwed together from individual parts, if necessary with the aid of devices. It is preferably provided with fastening elements at its ends and can be inserted and fastened into the crop guide tube without difficulty.
  • the installation unit is used during prefabrication is larger in diameter than the free pipe cross-section and is machined to the inside diameter of the pipe before being introduced into the pipe.
  • the tubes have fins on their outside for better heat exchange, e.g. B. longitudinal ribs or transverse ribs.

Abstract

To simplify the insertion of inserts in the material conveying tubes which can be heated and cooled from the outside and to improve the heat transfer, the inserts are, in the case of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material, prefabricated as a unit and as such introduced and exchangeably fastened in the tube.

Description

Die Erfindung richtet sich auf ein Verfahren zum Anordnen von Einbauten in um eine Achse drehbare, von außen beheiz- und kühlbare Gutführungsrohre von Wärmebehandlungseinrichtungen für pulvriges bis körniges, rieselfähiges, gegebenenfalls angeschlämmtes Gut.The invention is directed to a method for arranging internals in material guide tubes of heat treatment devices for powdery to granular, free-flowing, optionally slurried material that can be rotated about an axis and are heatable and coolable from the outside.

Drehrohre oder Rohre von Drehtrommeln mit Rohrbündeln mit indirekter Beheizung zum Wärmebehandeln von pulvrigem bis stückigem, rieselfähigem Gut weisen recht häufig solch geringen Durchmesser auf, daß man zum Einbringen der Einbauten und zum Befestigen derselben nicht mehr hineinkriechen kann. In solchen Fällen wurden bisher Halbrohre verwendet, die nach dem Einschweißen oder Annieten der Einbauten zusammengeschweißt wurden. Diese Verfahrensweise ist sehr aufwendig und bereitet wegen der fertigungstechnischen Toleranzen der Halbrohre oft Schwierigkeiten. Von besonderem Nachteil dabei ist, daß der Verschleiß der Einbauten im Rohrinneren nur schlecht kontrollierbar ist und daß vor allem schadhafte Teile ohne Aufschneiden des Rohres nicht austauschbar sind. Auch ist es nicht möglich, für die aufeinanderfolgende Wärmebehandlung verschiedener Güter die Einrichtung hinsichtlich der Einbauten in den Gutführungsrohren die dem jeweiligen zu behandelnden Gut eigenen Bedürfnisse anzupassen.Rotary tubes or tubes of rotary drums with tube bundles with indirect heating for the heat treatment of powdery to lumpy, free-flowing material quite often have such small diameters that it is no longer possible to crawl in to insert and fix them. In such cases, half-pipes were previously used, which were welded together after welding or riveting the internals. This procedure is very complex and often causes difficulties due to the manufacturing tolerances of the half-tubes. A particular disadvantage is that the wear of the internals inside the pipe only is difficult to control and that, above all, defective parts cannot be replaced without cutting the pipe. It is also not possible to adapt the equipment for the consecutive heat treatment of different goods with regard to the built-in elements in the material guide tubes to suit the particular goods to be treated.

Die Aufgabe besteht darin, ein Verfahren anzugeben, mit dem sich Einbauten in Gutführungsrohren von Wärmebehandlungseinrichtungen derart anordnen lassen, daß die Montage schnell und einfach vor sich geht, daß zur Verbesserung des Wärmeübergangs enge Toleranzen eingehalten werden können und daß die Einbauten leicht austauschbar sind.The task is to provide a method with which internals can be arranged in Gutführungsrohre heat treatment devices such that the assembly is quick and easy, that close tolerances can be maintained to improve the heat transfer and that the internals are easily interchangeable.

Die Aufgabe wird dadurch gelöst, daß die Einbauten je Rohr als Einheit vorgefertigt und als solche in das Rohr eingebracht und austauschbar befestigt werden.The object is achieved in that the internals for each tube are prefabricated as a unit and, as such, are inserted into the tube and fastened interchangeably.

Dadurch wird erreicht, daß in Umfangsrichtung völlig geschlossene Rohre verwendet werden können. Die Einbaueinheit läßt sich, gegebenenfalls unter Zuhilfenahme von Vorrichtungen,aus Einzelteilen zusammenschweißen, -nieten oder -schrauben. Sie wird vorzugsweise an ihren Enden mit Befestigungselementen versehen und ist ohne Schwierigkeiten in das Gutführungsrohr einschiebbar und daran befestigbar.This ensures that completely closed pipes can be used in the circumferential direction. The installation unit can be welded, riveted or screwed together from individual parts, if necessary with the aid of devices. It is preferably provided with fastening elements at its ends and can be inserted and fastened into the crop guide tube without difficulty.

In manchen Fällen wird die Einbaueinheit beim Vorfertigen in ihrem Durchmesser größer dimensioniert als der freie Rohrquerschnitt beträgt und wird vor dem Einbringen in das Rohr auf den Innendurchmesser des Rohres abgearbeitet.In some cases the installation unit is used during prefabrication is larger in diameter than the free pipe cross-section and is machined to the inside diameter of the pipe before being introduced into the pipe.

Es hat sich überraschenderweise gezeigt, daß auch bei langen Rohren so enge Toleranzen eingehalten werden können, daß die Einbauten, die beispielsweise aus Wendeln und Leisten bestehen, mit der Innenwandung des Rohres nahezu dicht abschließen. Dies ist besonders wesentlich, damit bei indirekt von außen beheiz- oder kühlbaren Rohren das Gut auf der Rohrwandung bei der Drehbewegung des Rohres nicht schleift, sondern durch die Einbauten mit hochgenommen wird und erst bei einem gewissen Winkel die darunterliegende Gutschicht überrieselt. Dadurch wird der Wärmeübergang erheblich verbessert, und der Verschleiß an der Rohrwand sinkt auf ein Minimum. Vorzugsweise tragen die Rohre auf ihrer Außenseite zum besseren Wärmeaustausch Rippen, z. B. Längsrippen oder Querrippen.It has surprisingly been found that such narrow tolerances can be maintained even with long pipes that the internals, which consist, for example, of coils and strips, close almost tightly with the inner wall of the pipe. This is particularly important so that in the case of pipes which can be heated or cooled indirectly from the outside, the material on the pipe wall does not drag when the pipe rotates, but is taken up by the internals and only drizzles over the layer of good beneath it at a certain angle. This significantly improves heat transfer and reduces wear on the pipe wall to a minimum. Preferably, the tubes have fins on their outside for better heat exchange, e.g. B. longitudinal ribs or transverse ribs.

Bei der Vorfertigung einer Einbaueinheit, die beispielsweise aus Leisten und Wendeln aufgebaut ist, ist es zweckmäßig, die Leisten und/oder Wendeln mit Passschlitzen zu versehen und mittels dieser Schlitze zusammenzustecken. Sofern eine genügend feste Klemmwirkung vorhanden ist, ist ein Verschweißen der Teile unter Umständen nicht einmal erforderlich.When prefabricating an installation unit, which is constructed, for example, from strips and spirals, it is expedient to provide the strips and / or spirals with fitting slots and to plug them together by means of these slots. If there is a sufficiently firm clamping effect, it may not even be necessary to weld the parts.

Claims (2)

1. Verfahren zum Anordnen von Einbauten in um eine Achse drehbare, von außen beheiz- oder kühlbare Gutführungsrohre von Wärmebehandlungsvorrichtungen für pulvriges bis körniges, rieselfähiges, gegebenenfalls angeschlämmtes Gut, dadurch gekennzeichnet, daß die Einbauten je Rohr als Einheit vorgefertigt und als solche in das Rohr eingebracht und austauschbar befestigt werden.1. A method for arranging internals in an axis rotatable, externally heatable or coolable Gutführungsrohre of heat treatment devices for powdery to granular, free-flowing, optionally slurried material, characterized in that the internals prefabricated as a unit and as such in the tube introduced and interchangeably attached. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Einbaueinheit beim Vorfertigen in ihrem Durchmesser größer dimensioniert wird als der freie Rohrquerschnitt beträgt, und daß sie vor dem Einbringen in das Rohr auf dessen Innendurchmesser abgearbeitet wird.2. The method according to claim 1, characterized in that the prefabricated assembly unit is dimensioned larger in diameter than the free pipe cross-section, and that it is processed on the inside diameter of the pipe before insertion.
EP80106907A 1979-11-21 1980-11-08 Process for arranging inserts in material conveying tubes of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material Withdrawn EP0029541A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2946955 1979-11-21
DE19792946955 DE2946955A1 (en) 1979-11-21 1979-11-21 METHOD FOR ARRANGING INSTALLATIONS IN GUIDE PIPES OF HEAT TREATMENT DEVICES FOR PULVIRGES TO GRAINY, GRAVELABLE, Possibly. CLOSED GOOD

Publications (1)

Publication Number Publication Date
EP0029541A1 true EP0029541A1 (en) 1981-06-03

Family

ID=6086559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106907A Withdrawn EP0029541A1 (en) 1979-11-21 1980-11-08 Process for arranging inserts in material conveying tubes of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material

Country Status (5)

Country Link
EP (1) EP0029541A1 (en)
JP (1) JPS5691178A (en)
DE (1) DE2946955A1 (en)
ES (1) ES497003A0 (en)
ZA (1) ZA807218B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9987232B2 (en) 2006-02-17 2018-06-05 Axcess Limited Dissolution aids for oral peptide delivery comprising a biguanide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688884B2 (en) 2002-06-06 2004-02-10 Harbison-Walker Refractories Company Rotary kiln heat exchanger and method of assembling same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE443937A (en) * 1936-12-05 1942-01-31
DE1103836B (en) * 1959-04-15 1961-03-30 Smidth & Co As F L Rotary kiln
GB942918A (en) * 1961-08-17 1963-11-27 Gustav Bojner Improvements in or relating to rotary drums for drying or heat-treating or cooling materials
US3142546A (en) * 1962-01-22 1964-07-28 John N Coats Kiln disintegrator
FR1487637A (en) * 1966-07-23 1967-07-07 Torkapp R Ab Improvements to rotary drums or ovens, incorporating heat exchanging chain devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT323632B (en) * 1974-02-15 1975-07-25 Hatschek Zementwerke Ag H TURNING FACILITIES WITH FOLLOWING COOLING UNIT

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE443937A (en) * 1936-12-05 1942-01-31
DE1103836B (en) * 1959-04-15 1961-03-30 Smidth & Co As F L Rotary kiln
GB942918A (en) * 1961-08-17 1963-11-27 Gustav Bojner Improvements in or relating to rotary drums for drying or heat-treating or cooling materials
US3142546A (en) * 1962-01-22 1964-07-28 John N Coats Kiln disintegrator
FR1487637A (en) * 1966-07-23 1967-07-07 Torkapp R Ab Improvements to rotary drums or ovens, incorporating heat exchanging chain devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9987232B2 (en) 2006-02-17 2018-06-05 Axcess Limited Dissolution aids for oral peptide delivery comprising a biguanide

Also Published As

Publication number Publication date
ZA807218B (en) 1981-11-25
DE2946955A1 (en) 1981-05-27
JPS5691178A (en) 1981-07-23
ES8107381A1 (en) 1981-10-01
ES497003A0 (en) 1981-10-01

Similar Documents

Publication Publication Date Title
DE2544923C2 (en) Process for freezing food
DE3610490C2 (en)
DE2255996A1 (en) TRANSPORT VESSEL
DE1552127A1 (en) Method for fastening a metal pipe in a metal plate provided with an opening
DE2261206A1 (en) SHAWING MACHINE
DE4010151A1 (en) Heat-exchanger made of concentric tubes - has gas flowing in spiral in annular chamber round inner tube
CH663832A5 (en) PIPE CLAMP TO CONNECT TWO PIPE ENDS.
EP0449124B1 (en) Annular space heat exchanger
EP0029541A1 (en) Process for arranging inserts in material conveying tubes of thermal treatment devices for pulverulent to granular, pourable, possibly sedimentary material
DE2550035C3 (en) Heat exchanger with a plurality of heat exchange medium flow tubes arranged at a distance from one another
DE2144348A1 (en) Flow device for liquids
CH636721A5 (en) Pressure-proof heater rod penetration for pressure vessels of nuclear reactor plants which contain a liquid, vaporisable medium
DE3534991A1 (en) TURN TUBE COOLER
EP0223912B1 (en) Device for cooling hot dust-laden gases
EP0053248A2 (en) Heat exchanger
DE2557413C2 (en) Rotary kiln with satellite cooler
DE2425539C3 (en) Combined moisture separator and superheater
DE3519467C2 (en)
DE2651940C3 (en) Double pipe heat exchanger
DE1557180C3 (en)
DE3707586A1 (en) DEVICE FOR RADIATING LIQUIDS WITH RADIOACTIVE RAYS
DE3237193A1 (en) METHOD AND DEVICE FOR HEAT TREATMENT OF TUBES
DE2902605C2 (en) Temperature controlled laboratory device, in particular made of glass
DE19505532A1 (en) Process for the gap-free welding of the ends of thin-walled heat exchanger tubes
DE693124C (en) Circulating melting or roasting furnace with indirect heating of the goods

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

17P Request for examination filed

Effective date: 19801108

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19820420

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KELLER, WOLFGANG, DIPL.-ING.