EP0039039B1 - Dispositif pour le traitement à chaud, notamment le séchage des matières en vrac pulvérulentes - Google Patents

Dispositif pour le traitement à chaud, notamment le séchage des matières en vrac pulvérulentes Download PDF

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Publication number
EP0039039B1
EP0039039B1 EP81103003A EP81103003A EP0039039B1 EP 0039039 B1 EP0039039 B1 EP 0039039B1 EP 81103003 A EP81103003 A EP 81103003A EP 81103003 A EP81103003 A EP 81103003A EP 0039039 B1 EP0039039 B1 EP 0039039B1
Authority
EP
European Patent Office
Prior art keywords
fluidized bed
bulk material
reactor
heat
bed reactor
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
EP81103003A
Other languages
German (de)
English (en)
Other versions
EP0039039A1 (fr
Inventor
Günther Ing. grad. Gappa
Josef Dipl.-Ing. Degel
Harald Prof. Dipl.-Chem. Jüntgen
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Priority to AT81103003T priority Critical patent/ATE8532T1/de
Publication of EP0039039A1 publication Critical patent/EP0039039A1/fr
Application granted granted Critical
Publication of EP0039039B1 publication Critical patent/EP0039039B1/fr
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/084—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating

Definitions

  • a device for the treatment of crushed solid material in a vertical chamber is also known, which is provided in the upper part with means for introducing the material and in the lower part with further means for introducing a compressed gas.
  • This device also uses a first impeller 32 which rotates in the upper part of the chamber to prevent agglomeration of fluidized material, and a second impeller 42 which rotates at the bottom of the chamber for the pressurized gas introduced through openings in pipes inserted on the impeller blades to distribute and fluidize the crushed solid material.
  • the invention is therefore based on the object to provide a device of the type mentioned, the even heat Ensure treatment, in particular drying, of powders, powders, fine dusts and similar fine-particle bulk materials, the lowest possible energy consumption being sought and the formation of hot spots and caking should be avoided, so that the treatment results are overall very uniform.
  • the combination of features of the device according to the invention satisfactorily solves the problem at hand, i.e. a combination in which the fluidized bed is maintained by fluidizing gases escaping from a rotating agitator arm and the heat treatment is carried out at least partially by a heat exchange medium which is independent of the fluidizing gas.
  • the feed device for the bulk material includes all of the usual and known device parts for such processes, such as. B. a storage bunker, a metering device, a deagglomerator, a lock; the same applies to the discharge device, which, for. B. can consist of a weir and a lock.
  • the equipment known for this purpose can also be used for the supply and discharge for fluidizing gas, a suitable device for applying fluidizing gas to the stirring arm must be provided.
  • a separator for bulk material particles that have been discharged with the fluidizing gas from the fluidized bed reactor is recommended.
  • the arrangement of the stirring arm according to the invention in the lowermost area of the fluidized bed reactor prevents bulk particles from settling on the reactor base; this is further supported by the measures of claims 2 and 3, in particular any agglomerates formed are destroyed and fluidization is also achieved in this reactor area.
  • the agents according to the invention for solids distribution on the agitator arm represent a further advantageous measure for avoiding agglomerate formation in the area of the agitator arm and possibly in the area of the fluidized bed reactor below the agitator arm of the stirring arm can be realized in different ways, wherein the stirring arm can also have multiple branches, so to speak multi-arm.
  • the means for retaining the bulk material particles immersed in the fluidized bed can be weirs, walls and other internals which, in the general direction of transport of the bulk material particles through the fluidized bed reactor from its entrance to its exit side, form bottlenecks which reduce backmixing of the bulk material particles and thus the residence time spectrum -comparable.
  • transverse, rib-shaped heat exchangers are used as means for retaining the bulk material particles, since the heat transfer between bulk material particles and heat exchanger is improved in the region of the constrictions.
  • An inventive lamellar structure of the heat exchanger for this purpose, for. B. in the manner of radiator fins, is particularly well suited.
  • the height adjustment according to the invention of an overflow device for the bulk material on the fluidized bed reactor facilitates operation in the part-load range and the setting of the residence time of the bulk material particles in the fluidized bed reactor.
  • the objectives according to the invention are achieved particularly well by the cascade-shaped structure of the fluidized bed reactor according to the invention.
  • the connection of individual treatment zones is considered, which must be traversed by all bulk material particles.
  • such cascades can be formed by lamellar heat exchangers placed one behind the other in the direction of travel of the bulk material particles.
  • the device according to the invention thus enables a continuous and automated mode of operation, with as much heat-treated material being discharged automatically as untreated material being added.
  • the heat treatments in question in the device according to the invention can be endothermic or exothermic processes, ie heat is supplied or removed by the heat exchange medium.
  • the fluidizing gas can only be used to maintain fluidizing conditions, but it can also be a reaction partner of a chemical reaction that may take place and finally - namely preferred - the vortex gas is supported by the heat treatment, ie heat is removed or - particularly preferably - heat is supplied to z.
  • finely divided means that the bulk goods have an average grain diameter of generally less than 1 mm, but usually less than 0.1 mm and even less.
  • Fluid bed in the sense of the invention is understood to mean the state of the bulk material particles in which they behave like a liquid in a container.
  • the introduction of the required amount of heat means both the supply and the removal of heat into or from the fluidized bed.
  • Fluidizing gas for the fluidized bed reactor 6 is drawn in by means of a blower 11 and fed to a heat energy source 12.
  • the vortex gas heated in this way passes through a rotating union 13 into the agitator arm 7, which is rotated by the drive 14.
  • the system parts of the reference numerals 1-5 are, if not absolutely necessary, components of the feed device 17.
  • the lock 10 is part of the discharge device for bulk material.
  • the blower 11 and the rotary union 13 are components of the feed device for fluidizing gas, while the separator 15 is a component of the discharge device for this.
  • the heat energy source 12 can - as not shown here - alternatively or additionally. Lich used for the heat transfer fluid in the heat exchanger 9 shown only schematically.
  • the stirring arm 7 is arranged in the lowermost region 21 of the fluidized bed reactor 6.
  • the outlet openings 20 are oriented essentially downward with a directional component opposite to the direction of rotation of the stirring arm.
  • the means 8 designed as a partition for retaining bulk material particles is transverse to the general direction of travel of the solid particles of the fluidized bed 23 in the fluidized bed reactor 6 aligned and leaves an opening 24 for the stirring arm 7 and the bulk material passage free in the lowest region 21 and an opening 26 for gas passage in the uppermost region 25 of the fluidized bed reactor 6.
  • FIG. 3 as a modification of Figs. 1 and 2, an elongated fluidized bed reactor 6 is shown, in which the feed point 27 and the discharge point 28 are arranged on the narrow sides and several, here-two, complete stirring devices work in series and separately from one another.
  • the heat exchangers 9 are designed as in FIG. 2 and, because of suitable perforations, enable the stirring arms 7 to rotate freely, which of course (as also in FIG. 2) can also be arranged at different heights in relation to the fluidized bed - also several above one another.
  • the arrangement of the heat exchangers transversely to the general direction of travel of the bulk material particles - further heat exchangers can also be provided - again results in a cascade-shaped structure of the fluidized bed reactor.
  • FIG. 2 further details of FIG. 2 are illustrated.
  • the bulk material is fed in by means of a screw conveyor 31 and the discharge is carried out by means of a height-adjustable overflow device 32.

Claims (8)

1. Dispositif pour le traitement thermique, notamment pour le séchage de matière en vrac à particules fines dans une couche turbulente, constituée par
1. un réacteur à couche turbulente comprenant
1.1. un dispositif de chargement et un dispositif d'extraction pour la matière en vrac,
1.2. un dispositif d'amenée et un dispositif d'évacuation du gaz de mise en turbulence, ainsi que
2. une source de chaleur reliée au réacteur à couche turbulente,
3. un dispositif agitateur comportant des bras agitateurs immergés dans la couche turbulente, reliés au dispositif d'arrivée du gaz de mise en turbulence et munis d'un orifice de sortie du gaz de mise en turbulence, disposés dans la région extrême inférieure du réacteur à couche turbulente, ainsi que
4. un échangeur de chaleur immergé dans la couche turbulente, relié à la source de chaleur,

caractérisé par
5. au moins un bras agitateur (7) avec plusieurs orifices de sortie (20) pour le gaz de mise en turbulence, ainsi que
6. des échangeurs de chaleur (9) en forme de nervures destinés à retenir les particules du produit en vrac, qui sont immergés dans la couche turbulente (23) et disposés transversalement à la direction du transport des particules de la matière en vrac entre le dispositif de chargement et le dispositif d'extraction.
2. Dispositif selon la revendication 1, caractérisé en ce que les orifices de sortie (20) sont orientés dans l'ensemble vers le bas.
3. Dispositif selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que les orifices de sortie (20) présentent une composante de direction orientée en sens inverse du sens de rotation (29) du bras agitateur (7).
4. Dispositif selon une ou plusieurs des revendications 1 à 3, caractérisé par des moyens (22) destinés à fragmenter les solides, portés par le bras agitateur (7).
5. Dispositif selon une ou plusieurs des revendications 1 à 4, caractérisé par une construction lamellaire de l'échangeur de chaleur (9).
6. Dispositif selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que le post de chargement (27) et le poste d'extraction (28) de la matière en vrac se trouvent aux positions extrêmes en hauteur de la couche turbulente (23).
7. Dispositif selon une ou plusieurs des revendications 1 à 6, caractérisé par un dispositif de trop plein réglable en hauteur (32) pour le produit en vrac dans le réacteur à couche turbulente.
8. Dispositif selon une ou plusieurs des revendications 1 à 7, caractérisé par une construction en cascade du réacteur à couche turbulente (6).
EP81103003A 1980-04-29 1981-04-18 Dispositif pour le traitement à chaud, notamment le séchage des matières en vrac pulvérulentes Expired EP0039039B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103003T ATE8532T1 (de) 1980-04-29 1981-04-18 Vorrichtung zur waermebehandlung, insbesondere zum trocknen, von feinteiligen schuettguetern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3016448 1980-04-29
DE3016448A DE3016448C2 (de) 1980-04-29 1980-04-29 Verfahren und Vorrichtung zur Trockung von feinstkörnigen Schüttgütern

Publications (2)

Publication Number Publication Date
EP0039039A1 EP0039039A1 (fr) 1981-11-04
EP0039039B1 true EP0039039B1 (fr) 1984-07-18

Family

ID=6101214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103003A Expired EP0039039B1 (fr) 1980-04-29 1981-04-18 Dispositif pour le traitement à chaud, notamment le séchage des matières en vrac pulvérulentes

Country Status (5)

Country Link
US (1) US4439932A (fr)
EP (1) EP0039039B1 (fr)
JP (1) JPS56165881A (fr)
AT (1) ATE8532T1 (fr)
DE (2) DE3016448C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102393127A (zh) * 2011-09-27 2012-03-28 唐山市神州机械有限公司 一种粘性物料干燥成型方法及系统
DE102015121619A1 (de) * 2015-12-11 2017-06-14 Choren Industrietechnik GmbH Fluidisierungsboden mit einem Rührwerk, Druckbehälter für Schüttgut mit Fluidisierungsboden und Verfahren zur Fluidisierung von Schüttgut

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DE68911202T2 (de) * 1988-05-21 1994-04-14 Japanic Corp Trocknungsvorrichtung für Faulschlamm.
US5297348A (en) * 1993-03-01 1994-03-29 The French Oil Mill Machinery Company Process and apparatus for efficiently drying wet-milled corn germ and other materials
EP0819902A1 (fr) * 1996-07-17 1998-01-21 GEA Wärme- und Umwelttechnik GmbH Installation de séchage à vapeur à lit fluidisé
EP0819904A1 (fr) * 1996-07-17 1998-01-21 GEA Wärme- und Umwelttechnik GmbH Installation de séchage à vapeur à lit fluidisé
CN102721266B (zh) * 2012-07-05 2014-09-10 江苏港星方能超声洗净科技有限公司 管状物的干燥装置
CN107894157B (zh) * 2017-11-15 2019-10-29 广德樊缇卡信息咨询有限公司 一种焦亚硫酸钠的干燥系统
CN111644134B (zh) * 2020-05-19 2021-11-30 山东先达农化股份有限公司 一种化工用气液反应沉淀收集装置
CN112361719B (zh) * 2020-09-23 2022-11-11 上海化工研究院有限公司 一种用于实验室维生素的连续流化床干燥系统
CN113028788B (zh) * 2021-03-17 2023-06-30 平步青 一种急诊科医疗器械用烘干设备
CN113532060B (zh) * 2021-07-26 2023-12-29 广州联存医药科技股份有限公司 一种生物工程用药粉干燥装置及其使用方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102393127A (zh) * 2011-09-27 2012-03-28 唐山市神州机械有限公司 一种粘性物料干燥成型方法及系统
CN102393127B (zh) * 2011-09-27 2014-01-08 唐山市神州机械有限公司 一种粘性物料干燥成型方法及系统
DE102015121619A1 (de) * 2015-12-11 2017-06-14 Choren Industrietechnik GmbH Fluidisierungsboden mit einem Rührwerk, Druckbehälter für Schüttgut mit Fluidisierungsboden und Verfahren zur Fluidisierung von Schüttgut
DE102015121619B4 (de) 2015-12-11 2018-05-17 Choren Industrietechnik GmbH Fluidisierungsboden mit einem Rührwerk in einem Druckbehälter für Schüttgut und Verfahren zur Fluidisierung von Schüttgut in einem Druckbehälter

Also Published As

Publication number Publication date
DE3016448C2 (de) 1985-07-18
EP0039039A1 (fr) 1981-11-04
DE3016448A1 (de) 1981-11-05
US4439932A (en) 1984-04-03
ATE8532T1 (de) 1984-08-15
DE3164849D1 (en) 1984-08-23
JPS56165881A (en) 1981-12-19

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