EP2655997A2 - Dispositif de refroidissement d'un produit versable ou fluide - Google Patents

Dispositif de refroidissement d'un produit versable ou fluide

Info

Publication number
EP2655997A2
EP2655997A2 EP11788438.7A EP11788438A EP2655997A2 EP 2655997 A2 EP2655997 A2 EP 2655997A2 EP 11788438 A EP11788438 A EP 11788438A EP 2655997 A2 EP2655997 A2 EP 2655997A2
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling medium
flowing
free
flowable product
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Withdrawn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
EP11788438.7A
Other languages
German (de)
English (en)
Inventor
Klaus Lemke
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.)
Tridelta GmbH
Original Assignee
Tridelta 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 Tridelta GmbH filed Critical Tridelta GmbH
Publication of EP2655997A2 publication Critical patent/EP2655997A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/002—Liquid coolers, e.g. beverage cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/001—Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0042—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for foodstuffs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0045—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for granular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0075—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the same heat exchange medium flowing through sections having different heat exchange capacities or for heating or cooling the same heat exchange medium at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus

Definitions

  • the invention relates to a device for cooling a free-flowing or flowable product, such as strontium hexaferrite in the form of granules or the like in the production of hard ferrites.
  • Task to transport a free-flowing or flowable product after passing through a furnace and thereby cool. It is customary to use water-cooled rotary tubes or screws.
  • the free-flowing or flowable product which leaves the oven at a temperature of, for example, more than 1000 ° C., is cooled during transport by means of this water-cooled rotary tube.
  • a rotary tube or tube screw cooling is disclosed in the German utility model DE 20106822 gg.
  • Patent Application DD 281451 A5 before to provide along a rotary drum a plurality of rotating heat exchangers, which have a common supply line, and their derivatives via changeover valves either with a common
  • Cooling medium so that it is possible, that on the rotary drum accumulating waste heat a consumer with the highest possible and constant temperature and continuously
  • the object of the invention is to provide an improved device for cooling a free-flowing or flowable product, which enables a more efficient recovery of the heat as well as more degrees of freedom in carrying out the cooling process.
  • Figure 1 is a cross-sectional view through the
  • FIG. 2 is a cross-sectional view taken along the line A-A in FIG.
  • FIG. 1 A first figure.
  • Figure 3 shows an enlarged detail of Figure 1 with
  • Figure 4 shows a further detail enlargement of Figure 1 to illustrate the leadership of the supply
  • FIG. 5 is a Schetnatic diagram of the invention
  • Cooling device with the associated control and
  • the product is transported or conveyed. This can advantageously by a on the inner wall of the
  • this embodiment is based on a rotary tube. But it is also contemplated to use other containers, for example, those in which the transport takes place only by gravity such as in a
  • cooling zones 13a, 13b, 13c are designed so that they can be supplied independently with a respective cooling medium 15a, 15b, 15c.
  • the container 1 as a double-jacket tube, for example made of sheet steel in welded or rolled design.
  • the first cooling zone 13a is configured in the example according to the invention to allow cooling with thermal oil as the cooling medium.
  • the second and third zones 13b, 13c are designed for operation with water as the cooling medium.
  • the container 1 is provided at one end with a drive pin, while at the other end an end pin is attached.
  • the two pins are held in journal bearings 8.
  • Connecting lines can be provided.
  • Rotation speed of a few revolutions per minute in the embodiment for example, via a high-performance chain drive (not shown) with a corresponding control, so that the
  • Rotation speed can be adapted to the needs.
  • the following conditions can be set advantageously for the production of the strontium ferrite.
  • Strontium ferrite with a solids density of about 5 t / m »and a specific heat capacity of 0.8 to 1.0 kJ / (kg-K) has a container 1 of about 5 m Length at a diameter of about 60 cm proved sufficient and effective.
  • Cooling capacity of the individual cooling zones 13a, 13b, 13c to control is also particularly advantageous to design the control means as a control, whereby via corresponding sensors for temperature,
  • a temperature of the supplied cooling medium of 110 ° C is selected, and the temperature of the discharged cooling medium is controlled to 135 ° C.
  • the amount of thermal oil used for this purpose is about 5 m * / h at a maximum pressure of 7 bar.
  • the flow of the cooling medium preferably takes place counter to the conveying direction of the product.
  • Water is used as the cooling medium, which is supplied at a temperature of 45 ° C, and discharged at a temperature of 95 ° C again becomes.
  • the amount of water is 4 m 3 / h at a pressure of 3 bar.
  • the temperature of the product inlet is 250 ° C, and the product outlet results in a temperature of 75 ° C.
  • water is used as
  • Cooling medium supplied with a temperature of 10 ° C, and the discharge temperature of the water is about 12 ° C.
  • the amount of water in the third cooling zone 13c may be adjusted to, for example, 14 m * / h. Again, the pressure at 3 bar is specified.
  • Product outlet temperature of the cooling zone leaving free-flowing or flowable product, the pressure of the cooling medium or its flow rate per hour are controlled in a wide range. While the respective inlet temperatures, the flow velocity of the
  • Cooling medium and its pressure as primary variables by suitable means, such as heat exchangers, pumps and
  • Valves can be adjusted, the control of other parameters, such as the return temperature of the discharged cooling medium, and the product outlet temperature of the cooling zone leaving free-flowing or
  • temperature sensors are preferably provided in the device according to the invention, which measure the supply temperature of the cooling medium for each zone, as well as the return temperature of the from each cooling zone
  • Further temperature sensors which are accommodated, for example, in a hub having a plurality of spokes, which may be provided at a transition from one cooling zone to the next, and which transmit the measured value wirelessly or by a line in a shaft in the rotary tube, measure the temperature of the respective cooling zone
  • Flow sensors may be provided to determine the pressure and the flow rate of the cooling media.
  • the cooling medium of the first cooling zone 13a preferably through a passage 7, namely a rotary feedthrough, in the region of the one pin 5.
  • a passage 7 namely a rotary feedthrough
  • the cooling medium of the first zone 13a is discharged again on the same side on which the feed was also carried out.
  • the cooling medium for the second and third cooling zone 13b, 13c namely water, on the other side of the container 1 via the other pin 5 through corresponding rotary feedthroughs 7 is supplied.
  • the flow of the cooling medium preferably takes place counter to that
  • the cooling medium of the second and third cooling zones can either be discharged on the same side to which it was supplied, or it is possible, for example, to discharge the cooling medium of the central cooling zone 13b also on the side where the cooling medium is supplied to the first cooling zone 13a ,
  • the thermal oil which was used as the cooling medium of the first cooling zone 13a, to provide hot water for residential and working buildings via a heat exchanger.
  • the heat of the thermal oil can also be used to the
  • the starting materials of ferrite production namely the iron oxide, strontium carbonate and the additives, preheat before entering the furnace so as to reduce the total energy consumption of the furnace.
  • the cooling medium of the second cooling zone 13 b can be used to heat energy for neighboring living or
  • District heating network can be fed.
  • Figure 2 shows a cross section through the device for cooling of Figure 1 along the line AA.
  • the container 1 has an inner tube 2, so that a double-walled casing is formed, in which the cooling medium 15 is guided.
  • the spiral 3 or screw is provided for the Promote the product.
  • Spokes 4 are welded to the wall of the rotary tube and connect the rotary tube to a pin or shaft 5.
  • FIG. 3 shows a section of FIG. 1 in a preferred embodiment of the container 1 according to the invention.
  • the double-walled jacket of the container 1 is provided with guide plates 12 which guide the cooling medium 16 in a suitable manner. Between the individual cooling zones 13a, 13b, 13c, the double-walled area is separated by corresponding separating bulkheads 10. To simplify the construction, it is possible to provide supply and discharge lines 11 for the cooling medium on the outside of the container 1.
  • FIG. 4 shows a broad section from FIG. 1, the region of the product chute 6 and the peg 5 and the passages 7 for the supply and removal of a cooling medium being shown in greater detail.
  • the cooling medium is supplied via a rotary guide in the region of the pin and also discharged again.
  • the device is for
  • Cooling device with appropriately adapted control can also handle a throughput of up to 1000 kg / h of the same material. The cooling then reaches the same
  • Strontium ferrits to values above 75 ° C on the output side. Therefore it is in a preferred embodiment possible to provide a fourth cooling zone, ie to hang another double-walled tubular element to the rotary tube.
  • all the cooling zones are designed to be of equal length. This is by no means mandatory. Depending on the application, it is possible and useful to make individual cooling zones shorter or longer.
  • cooling medium can be supplied to the first zone 13a with a very low temperature, it is possible for the thermal stress to cause the granules to "burst", so that in a subsequent grinding step
  • FIG 5 shows schematically the structure of the cooling device 1 for the flowable or flowable product together with the heat exchangers and the associated control device.
  • the first section 13a is cooled with thermal oil as described above.
  • Flow meter 21a is the thermal oil through the
  • the thermal oil flowing out of the cooling device 1 passes through a thermal sensor 23a to a switching valve 29.
  • This switching valve 29 is designed such that it can direct some or all of the thermal oil to an emergency heat exchanger 17.
  • Another switching valve 33 is at the inflow of the
  • the emergency heat exchanger 17 in turn is in communication with a cooling circuit with the switching valve 33, so that a continuous flow of water to a cooling pool 35 and back is possible.
  • This cooling pool 35 is also the
  • thermosensors 25, 27 and 28 are provided to control the temperature at the outlet of the respective flows of the
  • valves 29 and 31 forward the respective cooling media only to the emergency heat exchanger 17 when the actual consumers, which are not shown in Figure 5, have no way to absorb the heat.
  • Thermal oil or the cooling water of the central portion 13 b to connect with respective heat storage, so that the waste heat can be used to provide, for example, service water or heating power.
  • the product supplied to the rotary kiln with the Waste heat is preheated.
  • Cooling media namely thermal oil and water used.
  • the invention is not limited.
  • the invention is not limited thereto and can be advantageously used in many places when it comes to cool a free-flowing or flowable product from a relatively high temperature quickly and effectively, while the waste heat for a

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un dispositif de refroidissement d'un produit versable ou fluide comprenant un récipient (1) destiné à recevoir et à transporter le produit versable ou fluide, et une pluralité de zones de refroidissement (13a, 13b, 13c), qui sont formées dans le récipient (1) dans le sens de transport du produit versable ou fluide. Selon l'invention, les zones de refroidissement (13a, 13b, 13c) sont conçues de manière à pouvoir être alimentées indépendamment les unes de autres avec un fluide de refroidissement correspondant (15a, 15b, 15c). Le dispositif comprend en outre un moyen de commande permettant de commander la puissance de réfrigération des zones de refroidissement individuelles (13a, 13b, 13c) indépendamment les unes des autres.
EP11788438.7A 2010-12-22 2011-11-24 Dispositif de refroidissement d'un produit versable ou fluide Withdrawn EP2655997A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010055706A DE102010055706A1 (de) 2010-12-22 2010-12-22 Vorrichtung zum Kühlen eines rieselfähigen oder fließfähigen Produktes
PCT/EP2011/070968 WO2012084406A2 (fr) 2010-12-22 2011-11-24 Dispositif de refroidissement d'un produit versable ou fluide

Publications (1)

Publication Number Publication Date
EP2655997A2 true EP2655997A2 (fr) 2013-10-30

Family

ID=45047771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11788438.7A Withdrawn EP2655997A2 (fr) 2010-12-22 2011-11-24 Dispositif de refroidissement d'un produit versable ou fluide

Country Status (7)

Country Link
US (1) US20140083118A1 (fr)
EP (1) EP2655997A2 (fr)
JP (1) JP2014512499A (fr)
CN (1) CN103380348A (fr)
CA (1) CA2822482C (fr)
DE (1) DE102010055706A1 (fr)
WO (1) WO2012084406A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104406437A (zh) * 2014-11-25 2015-03-11 上海安杰反光材料有限公司 玻璃微珠降温装置及其降温方法
KR101829200B1 (ko) * 2016-08-05 2018-02-14 주로테크 주식회사 애쉬 쿨러
CN110425913B (zh) * 2019-08-30 2024-02-27 中国科学院理化技术研究所 一种数据中心套管换热结构及其控制方法
CN110849066A (zh) * 2019-11-10 2020-02-28 江苏九洲环保技术有限公司 一种聚烯烃母料生产过水冷却装置
CN115434025B (zh) * 2022-08-04 2023-10-20 南通文凯化纤有限公司 一种石墨烯长丝纤维的成型装置

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DE3320595A1 (de) 1983-06-08 1984-12-13 Rheinische Braunkohlenwerke AG, 5000 Köln Schneckenfoerderer zum austragen von festen rueckstaenden aus unter hoher temperatur und ueberdruck betriebenen einrichtungen
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Also Published As

Publication number Publication date
CA2822482C (fr) 2016-05-03
JP2014512499A (ja) 2014-05-22
DE102010055706A1 (de) 2012-06-28
CN103380348A (zh) 2013-10-30
CA2822482A1 (fr) 2012-06-28
US20140083118A1 (en) 2014-03-27
WO2012084406A3 (fr) 2012-11-22
WO2012084406A2 (fr) 2012-06-28

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