EP1051880A1 - Beheizte förderschnecke - Google Patents

Beheizte förderschnecke

Info

Publication number
EP1051880A1
EP1051880A1 EP99901663A EP99901663A EP1051880A1 EP 1051880 A1 EP1051880 A1 EP 1051880A1 EP 99901663 A EP99901663 A EP 99901663A EP 99901663 A EP99901663 A EP 99901663A EP 1051880 A1 EP1051880 A1 EP 1051880A1
Authority
EP
European Patent Office
Prior art keywords
transfer member
helical part
transfer
shaft
insulating material
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.)
Granted
Application number
EP99901663A
Other languages
English (en)
French (fr)
Other versions
EP1051880B1 (de
Inventor
Olivier Lepez
Philippe Sajet
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.)
ETIA Evaluation Technologique Ingenierie et Applications SARL
Original Assignee
ETIA Evaluation Technologique Ingenierie et Applications SARL
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 ETIA Evaluation Technologique Ingenierie et Applications SARL filed Critical ETIA Evaluation Technologique Ingenierie et Applications SARL
Publication of EP1051880A1 publication Critical patent/EP1051880A1/de
Application granted granted Critical
Publication of EP1051880B1 publication Critical patent/EP1051880B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes

Definitions

  • the present invention relates to a device for the transfer and thermal treatment of divided solids such as pulverulent materials.
  • the transfer and heat treatment devices commonly used in the industry include a transfer member and a heating means for heat treatment.
  • the transfer member is a vibrating tubular envelope receiving the divided solids.
  • the heat treatment is then provided by heating the tubular envelope.
  • Such devices are difficult to implement and are relatively expensive.
  • a second type of device in which the transfer member is a propeller mounted to rotate around a longitudinal axis in a tubular casing.
  • the heating means is constituted either by the envelope (then formed of a double envelope to circulate a heat transfer fluid, or externally equipped with heating resistors), or by a tube, around which the propeller is wound, said tube being traversed by a fluid brought to a high temperature.
  • Such devices are simpler to implement than the previously mentioned devices. However, in these latter devices, only the solids located near the heating jacket or the heating tube are subjected to an effective heat flux. It has also been found in the case of a heating tube that, the tube not providing any transfer or mixing function of the divided solids, the divided solids being in the vicinity of the tube are not renewed.
  • the object of the invention is to remedy the aforementioned drawbacks by designing a more efficient device.
  • a device for the transfer and thermal treatment of divided solids comprising at least one transfer member having a longitudinal axis and a helical part, mounted to rotate around its longitudinal axis in a tubular casing and connected to an output shaft of a rotary drive motor, at least the helical part of the transfer member being formed in its mass of an electrically conductive material, and the transfer member comprising means for connection to a source of electrical energy supply in order to constitute the heating means itself.
  • the heating means is constituted by the transfer member in contact with which the divided solids are mostly brought during their transfer. All or almost all of the divided solids will therefore heat up directly in contact with the heating means, and this without stationing against the heating surface. The heating of the divided solids is thus carried out in a uniform manner and the problems of browning are practically eliminated.
  • the structure of the device is simple, so that its manufacturing cost remains low.
  • the helical part of the transfer member comprises a flat ribbon wound in a helix.
  • the helical part is formed of a helix winding around a shaft, the shaft then being made of insulating material or formed at least on its outer surface of an electrically conductive material.
  • the electrically conductive material is a metal such as stainless steel.
  • the tubular casing is made of an electrically insulating material. Thanks to this measure, the risks of short circuits between the transfer member and the tubular casing are eliminated, as are the risks of electrocution of people by contact with the tubular casing. The security of the device is thus reinforced.
  • the tubular casing is covered at least partially with an internal friction lining made of insulating material to form a support for the helical part.
  • the friction lining supports the helical part so as to prevent the helical part from bending during the transfer of the products.
  • the friction lining electrically isolates the helical part of the tubular casing, which can then be made of a conductive material. The risks of short circuits are then limited.
  • the device comprises a coupling gasket made of electrically insulating material connecting the transfer member to the output shaft of the engine.
  • the motor is thus isolated from the transfer member. The security of the device is thus further improved.
  • FIG. 1 is a partial perspective view, on the side of the drive motor, of a transfer and heat treatment device according to a first embodiment
  • FIG. 2 is a view similar to FIG. 1, on a side opposite the motor, of the transfer member of the device according to the first embodiment,
  • FIG. 3 is a partial perspective view with cutaway of a transfer and heat treatment device according to a second embodiment
  • FIG. 4 is a partial view in cross section of a variant of the second embodiment
  • FIG. 5 is a perspective view of the transfer member of a device according to a third embodiment
  • FIG. 6 is a cross-sectional view of a variant of the third embodiment.
  • the transfer and thermal treatment device comprises a tubular casing 1, open at the top, comprising, at its respective ends, an inlet pipe and an outlet pipe for the product to be transferred (not shown here).
  • the tubular casing 1 is here made of an electrically insulating material such as a plastic material.
  • the tubular casing 1 has been shown arranged with an open sky, the tubular casing 1 may also be arranged in the form of a complete cylinder (closed sky).
  • a transfer member generally designated at 2 is mounted in the tubular casing 1 to rotate around its longitudinal axis 3.
  • the transfer member 2 has a helically shaped part 4 formed by a flat ribbon, here of rectangular section, wound around a shaft 5 and kept spaced therefrom by spacers 6 distributed along the shaft 5.
  • the helical part 4 is produced in its mass in an electrically conductive material, for example stainless steel.
  • the shaft 5 is here made of insulating material and is mounted to pivot in the tubular casing 1 by means of two end portions 7 and 8 made of electrically conductive material and received in bearings not visible in FIGS. 1 and 2.
  • the helical part 4 is electrically connected to the end portions 7 and 8 by plates 9 of conductive material secured to the end portions 7 and 8.
  • the end portion 7 is associated with a drum 10 of electrically conductive material on which coals 11 of the electric current friction rub connected by conductive wires to a source of electrical energy supply (not shown).
  • the end portion 8 is itself associated with a drum, not shown, made of electrically conductive material on which rub the coals of discharge of the electric current. It is understood that the shaft 5 being made of electrically insulating material, the electric current is forced to pass through the helical part 4. It could also be provided that the shaft 5 is made of electrically conductive material but is isolated from the end portions 7 and 8 and the helical part 4.
  • the power source will be sized in particular according to the dimensional characteristics and electrical resistance of the transfer member.
  • the voltage delivered, continuous or alternating will be less than 100 volts for safety reasons.
  • the means of connection to the power source could be, instead of carbon, conductive rings, or conductive brushes rubbing on the exterior surface of the drums, or alternatively a rotating connection fitting mounted on one of the ends of the transfer member 2.
  • the drum 10 is connected to a rotary drive motor 12 by means of a coupling joint 13.
  • the coupling joint 13 is preferably made of insulating material.
  • the coupling seal 13 can thus ensure, in addition to an isolation function of the motor of the transfer member, a function of compensating for misalignments between the output shaft and the end of the transfer member and / or an elastic damping function.
  • drum 10 and the coupling assembly to the motor is housed in a compartment isolated from the tubular casing 1. The safety of the device is thus optimal.
  • the divided solids to be treated are introduced into the tubular casing 1 by the inlet duct (here on the motor side) and are entrained by the helical part 4 towards the outlet duct (at the opposite end). Simultaneously, the divided solids are heated throughout their transfer in direct contact with the external surface of the helical part 4. Due to the rotation of the helical part 4 and induced movements of the divided solids, the divided solids will be for the most brought into contact with the heated helical part during their transfer. The heating of the divided solids is thus very efficient and uniform for all or almost all of the divided solids.
  • FIG 3 we can see a device according to a second embodiment.
  • the device according to the second embodiment is identical to the device of the first embodiment described above, except as regards the helical part 4 which is here self-supporting (no support shaft is provided).
  • the structure of the transfer member is then particularly simple and is more particularly suitable for transfers over reduced distances.
  • the friction lining 14 will be arranged opposite the middle part of the helical part which is the zone of the helical part having the largest deflection in the event of deflection.
  • the friction lining 14 is advantageously made of an insulating material such as polytetrafluoroethylene, which allows on the one hand to electrically isolate the helical part 4 of the tubular casing 1 which can then be made of a conductive material, and d on the other hand to have a friction lining having a low coefficient of friction.
  • the transfer member 2 of the device comprises a tubular shaft 5 having as its longitudinal axis the axis 3.
  • a helix 4 of the Archimedes screw type is wound around the tubular shaft 5.
  • the tubular shaft 5 and the propeller 4 are the ⁇ cies are made in a single piece of electrically conductive material, here stainless steel.
  • the propeller 4 can also be attached to the shaft 5.
  • the transfer member 2 is intended, as previously, to be rotatably mounted in a tubular casing, preferably of electrically insulating material, by means of bearings receiving the ends of the tubular shaft 5, and to be connected by collecting means, such as drums on which coals coals, associated with a power source electric.
  • the cross section of the tubular shaft 5 is determined so as to be less than that of the cross section, in this case rectangular, of the propeller 4 so that the current supplied to one end of the shaft 5 preferentially passes throughout the mass of the propeller 4.
  • Any other means making it possible to increase the resistance of the shaft relative to that of the propeller may of course be used.
  • the transfer members 2 are here spaced from one another but may alternatively be nested.
  • the shafts 5 are here shown full but may of course be tubular.
  • the transfer members 2 are electrically connected to each other so that the electric current flows along these two members.
  • a friction lining may be provided in all of the embodiments described above, this lining extending over all or part of the tubular casing.

Landscapes

  • Screw Conveyors (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fish Paste Products (AREA)
  • Resistance Heating (AREA)
  • General Induction Heating (AREA)
  • Seal Device For Vehicle (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Forging (AREA)
  • Tunnel Furnaces (AREA)
EP99901663A 1998-01-30 1999-01-29 Beheizte förderschnecke Expired - Lifetime EP1051880B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9801046A FR2774545B1 (fr) 1998-01-30 1998-01-30 Dispositif de transfert et de traitement thermique de solides divises
FR9801046 1998-01-30
PCT/FR1999/000188 WO1999039549A1 (fr) 1998-01-30 1999-01-29 Vis transporteuse chauffante

Publications (2)

Publication Number Publication Date
EP1051880A1 true EP1051880A1 (de) 2000-11-15
EP1051880B1 EP1051880B1 (de) 2003-07-02

Family

ID=9522376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99901663A Expired - Lifetime EP1051880B1 (de) 1998-01-30 1999-01-29 Beheizte förderschnecke

Country Status (11)

Country Link
US (1) US6375345B1 (de)
EP (1) EP1051880B1 (de)
JP (1) JP3455518B2 (de)
CN (1) CN1144504C (de)
AT (1) ATE244497T1 (de)
AU (1) AU2169099A (de)
CA (1) CA2319031C (de)
DE (1) DE69909245T2 (de)
ES (1) ES2203064T3 (de)
FR (1) FR2774545B1 (de)
WO (1) WO1999039549A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2840676B1 (fr) 2002-06-05 2005-01-28 E T I A Evaluation Technologiq Procede de traitement thermique en continu de solides divises, et dispositif de mise en oeuvre dudit procede
FR2888724B1 (fr) * 2005-07-20 2007-09-28 Panzani Soc Par Actions Simpli Procede de traitement de graines cereales entieres decortiquees, et dispositif de mise en oeuvre dudit procede
FR2892888B1 (fr) * 2005-10-27 2008-01-04 E T I A Evaluation Technologiq Dispositif de traitement de solides divises
FR2945294B1 (fr) * 2009-05-07 2012-04-20 Olivier Lepez Procede et installation de densification energetique d'un produit sous forme de solides divises, en vue de l'obtention d'huiles pyrolytiques a vocation energetique
FR2955029B1 (fr) * 2010-01-08 2012-03-30 E T I A Evaluation Technologique Ingenierie Et Applic Procede de traitement de produits sous forme de solides divises en vue de leur debacterisation thermique, et installation de mise en oeuvre dudit procede
WO2012126096A1 (en) 2011-03-23 2012-09-27 Institut De Rechercheet De Développement En Agroenvironnement Inc. (Irda) System and process for thermochemical treatment of matter containing organic compounds
CN102424251A (zh) * 2011-08-17 2012-04-25 无锡市彩云机械设备有限公司 一种空心绞龙叶片
FR2995986A1 (fr) * 2012-09-21 2014-03-28 E T I A Evaluation Technologique Ingenierie Et Applic Dispositif de traitement thermique d'un produit
JP6307789B2 (ja) 2013-01-07 2018-04-11 東レ株式会社 糖液の製造装置及び糖液の製造方法
JP5547320B1 (ja) * 2013-03-19 2014-07-09 第一施設工業株式会社 搬送装置
FR3020353B1 (fr) 2014-04-24 2016-05-27 E T I A - Evaluation Tech Ingenierie Et Applications Dispositif de traitement thermique a vis comprenant une bande electriquement isolante
RU2561620C1 (ru) * 2014-06-10 2015-08-27 Евгений Сергеевич Ляховский Трубчатый электронагреватель
CN104129608A (zh) * 2014-07-15 2014-11-05 湖州大周高分子材料有限公司 粉料传输加热装置及传输加热方法
FR3037130B1 (fr) 2015-06-05 2017-06-16 Lepez Conseils Finance Innovations Lcfi Four de craquage
US20180242605A1 (en) * 2015-08-26 2018-08-30 Satake Corporation Superheated steam sterilization apparatus
WO2017131517A1 (en) 2016-01-28 2017-08-03 Next Renewable Group B.V. Production method of gaseous fuel, starting material and greenhouse
JP7021234B2 (ja) 2016-10-18 2022-02-16 ウ．テ．イ．ア．－エバリュアシオン テクノロジク，アンジェニリ エ アプリカシオン 二水素の製造装置、そのような装置を用いた二水素の製造方法及びそのような装置の利用法
GB201803905D0 (en) * 2018-03-12 2018-04-25 British American Tobacco Investments Ltd Methods for treating tobacco, material, apparatus for treating tobacco material, treated tobacco material and uses thereof
FR3081977A1 (fr) * 2018-05-31 2019-12-06 E.T.I.A. - Evaluation Technologique, Ingenierie Et Applications Dispositif de traitement thermique a revetement rapporte, revetement et procede correspondants
FR3081978B1 (fr) * 2018-06-01 2022-01-07 E T I A Evaluation Tech Ingenierie Et Applications Dispositif de traitement thermique a enveloppe refractaire
GB201811370D0 (en) * 2018-07-11 2018-08-29 British American Tobacco Investments Ltd Methods of treating cut stem tobacco material
CN109250404A (zh) * 2018-10-29 2019-01-22 天津大学 一种安装在余热锅炉下方的耐高温螺旋输送机
FR3101699B1 (fr) * 2019-10-08 2021-09-10 E T I A Evaluation Tech Ingenierie Et Applications Dispositif de traitement thermique d’un produit comprenant au moins un élément chauffant et procédé correspondant
DE102020121017A1 (de) 2020-08-10 2022-02-10 Techni Grau Solutions Ltd. Wärmebehandlungsverfahren zur Wärmebehandlung von festen Lebens- oder Futtermitteln und Wärmebehandlungsvorrichtung zur Durchführung des Verfahrens
WO2023237230A1 (en) 2022-06-08 2023-12-14 Knauf Gips Kg Extruder for producing gypsum moulded articles, process for manufacturing gypsum-based articles and gypsum-based articles
CN117139344B (zh) * 2023-09-12 2024-04-09 四川云华川科技有限公司 一种生活垃圾连续化多层热解反应釜

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Also Published As

Publication number Publication date
EP1051880B1 (de) 2003-07-02
US6375345B1 (en) 2002-04-23
ATE244497T1 (de) 2003-07-15
CA2319031C (fr) 2007-06-12
CA2319031A1 (fr) 1999-08-05
FR2774545A1 (fr) 1999-08-06
CN1289524A (zh) 2001-03-28
JP2002501868A (ja) 2002-01-22
FR2774545B1 (fr) 2003-05-30
CN1144504C (zh) 2004-03-31
WO1999039549A1 (fr) 1999-08-05
DE69909245D1 (de) 2003-08-07
JP3455518B2 (ja) 2003-10-14
AU2169099A (en) 1999-08-16
ES2203064T3 (es) 2004-04-01
DE69909245T2 (de) 2004-04-15

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