EP0124390B1 - Vorrichtung zur Wärmebehandlung von Teilchen-Material - Google Patents

Vorrichtung zur Wärmebehandlung von Teilchen-Material Download PDF

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Publication number
EP0124390B1
EP0124390B1 EP84400574A EP84400574A EP0124390B1 EP 0124390 B1 EP0124390 B1 EP 0124390B1 EP 84400574 A EP84400574 A EP 84400574A EP 84400574 A EP84400574 A EP 84400574A EP 0124390 B1 EP0124390 B1 EP 0124390B1
Authority
EP
European Patent Office
Prior art keywords
burner
cooler
enclosure
product
products
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
EP84400574A
Other languages
English (en)
French (fr)
Other versions
EP0124390A1 (de
Inventor
Lionel Jacques Gilbert Gaurier
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Priority to AT84400574T priority Critical patent/ATE27856T1/de
Publication of EP0124390A1 publication Critical patent/EP0124390A1/de
Application granted granted Critical
Publication of EP0124390B1 publication Critical patent/EP0124390B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • 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
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact

Definitions

  • the present invention relates to an installation for the thermal treatment of divided products which may be solid, liquid or pasty.
  • the object of the present invention is to remedy the above drawbacks by proposing an installation which allows, without limitation, heat treatment at any temperature of all types of divided products, and this with excellent reliability of results and cost. which remains minimal.
  • the subject of the invention is an installation for heat treatment of any divided products and of the type comprising a heating means connected to means for supplying the product to be treated and to a chamber for heat treatment of this product which has a cyclone-shaped lower part from which the product leaves to reach a cooler connected to a source of cold air and the lower part of which also has a cyclone form, characterized in that the heating means consists of a counter-rotating burner of combustion air and combustible gas connected to an oven constituted by a volute arranged at the top of the thermal enclosure, while the source of cold air consists of a box connected to the outlet of the enclosure and comprising at least two cold air inlets which provide a counter-rotating air flow in the box stirring and cooling the products leaving the enclosure, said box being connected ordered to a volute arranged at the top of the cooler.
  • the divided products will rotate with the hot gases, under the effect of centrifugal force, in the volute of the oven constituting the upper part of the heat treatment enclosure, which will increase the contact time between the product and hot gases, and will promote heat treatment.
  • the rotation of the product and the hot gases in the volute furnace will increase the effect of axial depression in the heat treatment enclosure to finally favor the evacuation of the hot gases at the top of the oven, while the divided and processed products will be evacuated in the lower part of the cyclone.
  • the same type of advantage as above is found on the cooler due to the presence of a volute at its upper part. This volute improves the cooling of the treated product as well as the recovery of the air heated by this product.
  • the scroll furnace is connected to the means for supplying the product to be treated by means of an indirect exchanger communicating with the oven and forming a preheating chamber for the product injected into the burner.
  • the upper volute part of the cooler is connected to the burner in order to recycle the heated air leaving this cooler with the combustion air reaching this burner.
  • the inlet of the burner and of the cold air supply box of the cooler are respectively equipped with a venturi duct and with which is associated a nozzle for injecting pressurized air.
  • the nozzle associated with the burner opens into a space receiving the products to be treated leaving the indirect exchanger, while the nozzle associated with the cooler opens into a space receiving the products leaving the thermal enclosure.
  • a thermal treatment installation in accordance with the principles of the invention, essentially comprises a gas burner 1, means, such as for example a hopper 2, communicating with the burner 1 to supply it with divided product to be treated, an enclosure 10 for heat treatment of this product and connected to the outlet of the burner 1, and a cooler 20 ensuring the cooling of the treated product leaving the enclosure 10, and allowing the cooled product to be collected in any container 30.
  • the burner 1 is of a type known per se and has been described for example in FR-A-2 249 585 belonging to the applicant and to which reference may be made. Briefly speaking, the burner 1 comprises a metal enclosure 3 forming, on either side of a partition 6, a combustible gas box 4 and an oxidizing air box 5 which enters a mixing chamber 7 by injectors 8 opening tangentially to the wall 7a of the chamber 7. Thus, in the chamber 7, a mixture of oxidizing air is effected in counter-rotation with combustible gas penetrating into said chamber through orifices 9 formed in the wall 7a.
  • the burner 1 is of course equipped with an ignition system and a flame safety device, not shown.
  • FIG. 11 shows a gas inlet pipe to the gas box 4 of the burner 1 and equipped with a flow measurement device 12.
  • a pipe 13 fitted with any device 14 for flow measurement is connected to on the one hand to a source of pressurized air not shown and on the other hand to the inlet of the burner 1 in a manner which will be described in detail later, so as to be able to inject and pass through the developed flame in said burner, the divided products to be treated coming from the supply means 2.
  • the enclosure 10 which makes it possible to perfect the heat treatment of the product leaving the burner 1, is essentially constituted, at its upper part, by an oven 15 having a volute configuration 16 connected to the burner 1 as best seen in Figure 2, and, at its lower part, by a cylindrical-conical part forming a sort of cyclone 17.
  • the oven 15 forms a volute 16 widened at the upper part of cyclone 17 to finally come to merge with said upper part, as shown in 18 in FIG. 2.
  • the products treated in the enclosure 10 are collected in a hopper 19 and are conveyed by a line 21 of pressurized air to the cooler 20.
  • the latter has a general structure identical to the cyclone oven 15, 17.
  • the upper part 22 of the cooler 20 has a spiral or volute configuration 23, while the lower part of this cooler consists of a cylindrical-conical element 24 forming a sort of cyclone.
  • the upper part 22 in volute 23 is, as can be seen in FIGS. 1 and 2, connected to a box 25 quite comparable to the air box 5 of the burner 1.
  • the box 25 is provided with orifices shown diagrammatically at 26 and opening tangentially into the wall 27 of the box, so that the pressurized air arriving via line 28, optionally equipped with a flow measurement device 29, provides a flow of air against rotation in said box, which flow brews and cools the products leaving the enclosure 10.
  • the cooling will take place further and in an accelerated manner in the upper volute part 23 of the cyclone cooler 22, 24.
  • the hot fumes or gases leaving the 15-cyclone oven 17 are recovered by a pipe 31 and pass through an indirect exchanger 32 to be finally evacuated at 33.
  • the indirect exchanger 32 in a way forms a preheating chamber for the product to be treated which "passes through" the hot fumes coming from the enclosure 10.
  • volute 23 of the cyclone cooler 22, 24 is connected by a line 34 to the air box 5 of the burner 1 so as to thus recycle the heated air leaving the cooler with the combustion air in said burner.
  • the pipe 13 ends with a nozzle 35 for injecting pressurized air, which nozzle opens into a space 36 receiving the products to be treated leaving the exchanger 32.
  • a conduit 37 forming a venturi 37a and joining the space 36 at the inlet of the burner 1.
  • the same arrangement is made at the inlet of the air box 25 of the cyclone cooler 22, 24.
  • a conduit forming a venturi 38 connecting the air box 25 to a space 39 receiving the treated products and leaving the enclosure 10, while in said space, opens the conduit 21, as seen in Figure 3.
  • the installation which has just been described is particularly suitable for the heat treatment of powdery solid products, such as for example sand, metal chips or various mineral products.
  • the product divided and preheated by the exchanger 32 passes through the flame of the burner 1 and then follows the spiral path of the furnace 15.
  • the homogenization and the contact time of the divided products with the fumes are increased, and the rotation of the products mixed with the hot gases in the oven 15 increases the vacuum in the center of the cyclone oven 15, 17 so that the fumes are easily recovered by the pipe 31, while, after passing through the oven 15, the divided products fall into the cyclone 17 and are taken up by the cyclone-cooler 22, 24.
  • An installation has therefore been produced according to the present invention allowing an effective, reliable and inexpensive heat treatment of very diverse products including pasty products with high cohesion.
  • the invention is in no way limited to the embodiment described and illustrated, which has been given only by way of example.
  • it is possible to provide a coating of refractory concrete or other material inside the cyclone furnace.
  • the connections of the various elements of the installation can be carried out in any suitable manner whatsoever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Microbiology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Cyclones (AREA)

Claims (5)

1. Anlage für thermische Behandlung von beliebigen geteilten Produkten mit einem mit den Zuführungsmitteln (2) der zu verarbeitenden Produkte und mit einem Raum (10) zur thermischen Behandlung dieses Produktes verbundenen Heizmittel, welcher Raum einen zyklonenförmigen unteren Teil (17) aufweist, aus dem das Produkt austritt, um zu einem mit einer Kaltluftquelle verbundenen Kühler (20) zu gelangen, dessen unterer Teil (24) auch eine Zyklonform aufweist, dadurch gekennzeichnet, dass das Heizmittel ein Brenner mit Gegenlauf von die verbrennungsbewirkende Luft und von Brenngas ist, der mit einem Ofen (15) verbunden ist, der aus einem an dem oberen Teil des thermischen Raumes (10) angeordneten spiralförmigen Gehäuse (16) besteht, während die Kaltluftquelle aus einer mit dem Ausgang des Raumes (10) verbundenen Kasten (25) mit mindestens zwei Kaltluftzuführungen (26) besteht, die in dem Kasten (25) einen Gegenlauf-Luftfluss erzeugen, der die aus dem Raum (10) austretenden Produkte durchrühren und kühlen, wobei die besagte Kapsel mit einem an dem oberen Teil (22) des Kühlers (20) angeordneten spiralförmigen Gehäuse (23) verbunden ist.
2. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass der Ofen (15) in Spiralform (16) über einen indirekten Tauscher (32) mit den Mitteln (2) für die Einspeisung von zu bearbeitenden Produkt verbunden ist, wobei der Tauscher 32 in Verbindung mit dem Ofen (15) ist und eine Vorheizkammer des in den Brenner (1) eingeblasenen Produktes bildet.
3. Anlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der spiroidale (23) ober Teil (22) des Kühlers (20) mit dem Brenner (1) verbunden ist, um die aus diesem Kühler austretende geheizte Luft mit der zu diesem Brenner fliessenden verbrennungsbewirkende Luft in den Arbeitsprozess zurückzuführen.
4. Anlage nach einem der vorstehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Ausgänge des Brenners (1) und dem Kasten (25) zur Speisung des Kühlers (20) mit Kaltluft jeweils mit einem Venturirohr (37, 38) ausgerüstet sind und dem eine Düse (35, 21) zum Einblasen von unter Druck stehender Luft zugeordnet ist.
5. Anlage nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die dem Brenner (1) zugeordnete Düse (35) in einen Raum (36) mündet, der die zu behandelnden aus dem indirekten Tauscher (32) austretenden Produkte empfängt, während die dem Kühler (20) zugeordnete Düse (21) in einen Raum (39) mündet, der die aus dem thermischen Raum (10) austretenden Produkte empfängt.
EP84400574A 1983-03-23 1984-03-21 Vorrichtung zur Wärmebehandlung von Teilchen-Material Expired EP0124390B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400574T ATE27856T1 (de) 1983-03-23 1984-03-21 Vorrichtung zur waermebehandlung von teilchenmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8304771 1983-03-23
FR8304771A FR2543280B1 (fr) 1983-03-23 1983-03-23 Procede et installation de traitement par voie thermique de produits divises

Publications (2)

Publication Number Publication Date
EP0124390A1 EP0124390A1 (de) 1984-11-07
EP0124390B1 true EP0124390B1 (de) 1987-06-16

Family

ID=9287147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400574A Expired EP0124390B1 (de) 1983-03-23 1984-03-21 Vorrichtung zur Wärmebehandlung von Teilchen-Material

Country Status (5)

Country Link
EP (1) EP0124390B1 (de)
AT (1) ATE27856T1 (de)
CA (1) CA1261619A (de)
DE (2) DE3464284D1 (de)
FR (1) FR2543280B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904829A (zh) * 2017-12-28 2018-04-13 苏州朦井纺织科技有限公司 一种纺织材料加热装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03504155A (ja) * 1989-01-18 1991-09-12 モギレフスキー、チェフノロギーチェスキー　インスチツート 多分散物質の熱処理装置
DE19809067A1 (de) * 1998-03-04 1999-09-09 Nissen Verfahren und Vorrichtung zur Trocknung und/oder Erhitzung staubförmiger bzw. feinkörniger Stoffe
KR100773018B1 (ko) * 2007-02-16 2007-11-02 한국과학기술원 폴리머 패턴을 몰드로 사용하여 제작한 마이크로 셔터디바이스, 폴리머 패턴을 몰드로 사용하여 마이크로 셔터디바이스를 제작하는 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956999A (de) * 1950-02-10
US1329813A (en) * 1917-03-28 1920-02-03 G A Buhl Company Process of drying solids
US1892233A (en) * 1930-07-14 1932-12-27 Chappell Frank Lewis Method of and apparatus for drying casein
GB566170A (en) * 1942-08-18 1944-12-18 Frederick Jonathan Fison Improvements in or relating to a method of and means for drying powdered or other more or less finely divided material
FR1325620A (fr) * 1961-10-20 1963-05-03 Kloeckner Humboldt Deutz Ag Dispositif pour le chauffage d'une matière à grains fins, en particulier de la poudre de ciment brute
DE2061980C3 (de) * 1970-12-16 1975-11-13 Polysius Ag, 4723 Neubeckum Anlage zum Brennen und/oder Sintern von Feingut
FR2351369A1 (fr) * 1976-05-13 1977-12-09 Gaz De France Procede pour eliminer d'un corps divise une matiere volatile ou combustible accompagnant ce corps et dispositif pour sa mise en oeuvre
GB1570276A (en) * 1976-12-31 1980-06-25 White J Method and apparatus for heating particulate solids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904829A (zh) * 2017-12-28 2018-04-13 苏州朦井纺织科技有限公司 一种纺织材料加热装置

Also Published As

Publication number Publication date
EP0124390A1 (de) 1984-11-07
DE3464284D1 (en) 1987-07-23
CA1261619A (en) 1989-09-26
FR2543280B1 (fr) 1987-12-04
FR2543280A1 (fr) 1984-09-28
ATE27856T1 (de) 1987-07-15
DE124390T1 (de) 1985-08-14

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