EP0354292A1 - Vorrichtung zur Trocknung feinteiliger Feststoffe - Google Patents

Vorrichtung zur Trocknung feinteiliger Feststoffe Download PDF

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Publication number
EP0354292A1
EP0354292A1 EP89100216A EP89100216A EP0354292A1 EP 0354292 A1 EP0354292 A1 EP 0354292A1 EP 89100216 A EP89100216 A EP 89100216A EP 89100216 A EP89100216 A EP 89100216A EP 0354292 A1 EP0354292 A1 EP 0354292A1
Authority
EP
European Patent Office
Prior art keywords
tube
outer tube
solids
drying
distance
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Withdrawn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
EP89100216A
Other languages
German (de)
English (en)
French (fr)
Inventor
Uwe Christiansen
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.)
Heraeus Quarzglas GmbH and Co KG
Original Assignee
Heraeus Quarzglas GmbH and Co KG
Heraeus Quarzschmelze GmbH
Heraeus Schott Quarzschmelze 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 Heraeus Quarzglas GmbH and Co KG, Heraeus Quarzschmelze GmbH, Heraeus Schott Quarzschmelze GmbH filed Critical Heraeus Quarzglas GmbH and Co KG
Publication of EP0354292A1 publication Critical patent/EP0354292A1/de
Withdrawn legal-status Critical Current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
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/16—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials passing down a heated surface, e.g. fluid-heated closed ducts or other heating elements in contact with the moving stack of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/04—Heating arrangements using electric 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
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements

Definitions

  • the invention relates to a device for the continuous drying of finely divided solids by evaporating adhering moisture.
  • Devices of the aforementioned type are known from CH-PS 343 887. They have a vertical drying space between an inner and an outer tube. A supply nozzle for moist solids opens into the drying chamber at its upper end and a discharge funnel for dried solids is provided at its lower end.
  • the outer tube is covered by a heating jacket through which a heating medium flows and directly heats the wall of the outer tube. By heating the outer tube wall, heat is continuously supplied to the moist solid during the drying process.
  • the dried solids are collected in a collection container. Pre-warmed clean gas supplied with the wet solids to whirl it up escapes through the inner tube. The dry solid is separated from the gas like a cyclone separator.
  • the object of the invention is therefore to provide a device for drying finely divided solids at temperatures above 700 ° C., preferably in the range from 800 to 1000 ° C., which become thermally insulating during drying, such as moist silicon dioxide granules.
  • a device for the continuous drying of finely divided solids by evaporating adhering moisture which has a vertical drying space between an inner and an outer tube, at the upper end of which a supply nozzle for moist solids opens and at the lower end of which a discharge funnel for dried solids is provided, and which has a heat source enveloping the outer tube
  • the outer tube is formed from a plurality of nested tube sections made of infrared radiation-transparent material, the upper end of each tube section in the form of a funnel with a collar attached and the lower end are smooth and at each lower end of a pipe section which projects into an upper end of a pipe section, a spacer is attached and that the heat source in the form of an electrical resistance heater or infrared st rahêt is arranged at a distance from the outer tube.
  • the inner tube is closed on one side, is made of infrared radiation-permeable material and contains an
  • the outer tube is expediently encased at a distance from a protective tube made of material which is transparent to infrared radiation. This ensures that released vapors do not have a damaging effect on the heating source.
  • the space between the outer tube and the protective tube is connected to a vapor discharge nozzle, through which such acid vapors can be extracted.
  • the vapors formed during the drying of the moist solids are discharged through the space created when the outer tube ends are plugged into one another.
  • the spacer between the two pipe ends is advantageously designed as an annular body which is provided with through-openings for the vapors. Spacer elements which consist of a plurality of spacer lugs arranged in a ring shape and spaced apart from one another have also proven successful.
  • the inner tube, the outer tube and the protective tube are made of quartz glass, at least in the area of the heated zones, which is particularly well permeable to infrared radiation. This has the additional advantage that acid vapors remain without damaging the components of the device. All remaining components are expediently made of quartz material for reasons of purity.
  • the clear width of the drying room is 5 to 10 cm, preferably 5.5 to 6.5 cm, which ensures the drying of moist solids, which become excellent thermal insulators during drying, in industrially acceptable times and in appropriate quantities .
  • the dried solids In order to achieve continuous drying, the dried solids must be removed in a metered manner, for which purpose conveyor devices in the form of a roller, a screw or a vibrating table are connected to the discharge funnel for dried solids.
  • the vertical drying chamber 1 is formed by the inner tube 2, which is closed on one side, and the outer tube, which consists of a plurality of tube sections 3 inserted into one another.
  • Each such tube section 3 is formed at one end in the form of a funnel 4 with a collar 5 attached.
  • the smoothly formed end of the pipe section 3 arranged above projects into an end of a pipe section 3 designed in this way.
  • a plurality of spacers 6 are attached at the smooth end of each pipe section 3, .
  • they are designed as spacer studs.
  • Several such studs are arranged in a ring shape on the circumference of the lower end of the pipe section spaced apart.
  • An inlet funnel 7 projects into the upper end of the uppermost tube section 3, on which a bell 9 is placed over sealing elements 8 and is provided with the supply nozzle 10 for the moist granulate 11 a, which is located in a feed container 12.
  • An additional heating source 13 projects into the inner tube 2, for example a resistance heater, which can be connected to an electrical power source.
  • the outer tube formed from several tube sections 3 is surrounded by a protective tube 14 at a distance.
  • the protective tube 14 is supported at the lower end on a retaining ring 15 which is supported on the support element 17 via a steel plate 16.
  • the support element 17 rests on the one hand on the floor, and on the other hand it serves to support a furnace which completely envelops the drying room 1 and which has a resistance heater 18 which is shielded from the outside by means of the insulating body 19.
  • the protective tube 14 is sealed with sealing elements 8 and an intermediate ring 20 with the filling funnel 7 and the bell 9.
  • a discharge funnel 22 connects to the retaining ring 15 via sealing elements 8.
  • the conveying device 23 for the dried granulate 11b is connected to the discharge hopper 22.
  • the conveying device 23 consists of a worm 25 driven by a motor 24.
  • Moist granules 11a reach the drying chamber 1 from the feed container 12 via the supply nozzle 10, the clear width of which is approximately 5.5 to 6.5 cm. In the drying room 1, it is heated by both the resistance heater 18 and the additional heating source 13. The vapors generated can escape, as indicated by the arrows 26, into the space between the outer tube and the protective tube through the funnel-shaped ends of the rotor sections 3 and are discharged via the nozzle 21.
  • the moist granules 11a slide down during the drying process, the throughput speed of the granules to be dried being determined by the discharge of the conveying device which doses the dried granules 11b.
  • the components of the device according to the invention which are located in the area of the heated zones, advantageously consist of a material which is transparent to infrared radiation, preferably of quartz glass.
  • quartz material is used, for example.
  • the use of these materials for the components of the device according to the invention have the advantage that even moist granules 11a which contain acid can be dried without fear of damage to the individual components of the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
EP89100216A 1988-07-30 1989-01-07 Vorrichtung zur Trocknung feinteiliger Feststoffe Withdrawn EP0354292A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826047A DE3826047A1 (de) 1988-07-30 1988-07-30 Vorrichtung zur trocknung feinteiliger feststoffe
DE3826047 1988-07-30

Publications (1)

Publication Number Publication Date
EP0354292A1 true EP0354292A1 (de) 1990-02-14

Family

ID=6359980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100216A Withdrawn EP0354292A1 (de) 1988-07-30 1989-01-07 Vorrichtung zur Trocknung feinteiliger Feststoffe

Country Status (4)

Country Link
US (1) US4964227A (en, 2012)
EP (1) EP0354292A1 (en, 2012)
JP (1) JPH0723832B2 (en, 2012)
DE (1) DE3826047A1 (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010089721A1 (en) * 2009-02-09 2010-08-12 Christian Schiavolin Dehumidifier for plastics materials
EP1566604A4 (en) * 2002-10-21 2012-11-14 Kabushikikaisha Matsui Seisakusho DRYING DEVICE FOR POWDER MATERIAL

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504321U1 (de) * 1995-03-17 1995-05-04 VE Recycling GmbH, 28757 Bremen Trommeltrockner
BR9708494A (pt) * 1996-04-02 1999-08-03 Urban Stricker Dispositivo para tratamento por calor de bens a granel em transportadoras em parafuso e processo para secagem de bem a granel
KR100316150B1 (ko) * 1999-11-17 2001-12-12 허병수 로터리 건조기
DE102005022154A1 (de) * 2005-05-13 2006-11-16 Degussa Ag Reaktor und Verfahren zur schonenden Produkttrocknung
CN100443841C (zh) * 2007-02-06 2008-12-17 宋志强 重力式烘干机
JP7299603B2 (ja) * 2019-03-15 2023-06-28 株式会社カワタ 粉粒体処理方法および粉粒体処理装置
RU2718107C1 (ru) * 2019-10-23 2020-03-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный аграрный университет имени В.Я. Горина" Сушилка пророщенного зерна
CN111928633A (zh) * 2020-08-28 2020-11-13 南京源昌新材料有限公司 一种高效率可调节栅板式远红外干燥装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE22653C (en, 2012) * 1882-06-11 1883-07-24
US685336A (en) * 1900-07-31 1901-10-29 Prosper Leroy Apparatus for drying grain.
US884230A (en) * 1907-10-31 1908-04-07 Frank A Spivak Grain-heater.
DE365877C (de) * 1922-12-22 Leo Eberts Rieseltrockner
GB688570A (en) * 1950-11-03 1953-03-11 Glover & Co Ltd W T Improved means for heating granular material for the purpose of drying it or otherwise
GB765911A (en) * 1953-01-16 1957-01-16 Bela Thomas Sandor Improvements in or relating to the drying of grain and similar materials
GB954572A (en) * 1961-12-11 1964-04-08 Head Wrightson & Co Ltd Method of drying wet strip material
FR1453810A (fr) * 1964-08-13 1966-07-22 Inst Badan Jadrowych Procédé et installation pour le chauffage indirect de matières en grains
EP0124294A2 (en) * 1983-04-05 1984-11-07 Cactus Machinery Inc. Apparatus for conditioning hygroscopie plastic material
WO1988002090A1 (en) * 1986-09-16 1988-03-24 Chelyabinsky Konstruktorsko-Tekhnologichesky Insti Installation for conductive drying of bulk materials

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9711A (en) * 1853-05-10 Registering apparatus for printing-presses
US547597A (en) * 1895-10-08 Allen
US2677195A (en) * 1950-06-26 1954-05-04 Rudolf Lorenz Apparatus for treating granular materials
CH343887A (de) * 1955-03-19 1959-12-31 Ruhrchemie Ag Verfahren und Vorrichtung zur Wärmebehandlung, insbesondere zur Trocknung feinteiliger Feststoffe
DE1076571B (de) * 1955-05-16 1960-02-25 Ruhrchemie Ag Vorrichtung zur aufeinanderfolgenden Trocknung und Kuehlung von Getreide
US4201695A (en) * 1975-09-04 1980-05-06 Bergwerksverband Gmbh Arrangement for regenerating particulate adsorbents
US4289481A (en) * 1979-07-06 1981-09-15 Comet, Inc. Fuel and apparatus for drying grain
US4594795A (en) * 1984-10-23 1986-06-17 Erik Stephansen Air bearing support apparatus for drying a moving web

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365877C (de) * 1922-12-22 Leo Eberts Rieseltrockner
DE22653C (en, 2012) * 1882-06-11 1883-07-24
US685336A (en) * 1900-07-31 1901-10-29 Prosper Leroy Apparatus for drying grain.
US884230A (en) * 1907-10-31 1908-04-07 Frank A Spivak Grain-heater.
GB688570A (en) * 1950-11-03 1953-03-11 Glover & Co Ltd W T Improved means for heating granular material for the purpose of drying it or otherwise
GB765911A (en) * 1953-01-16 1957-01-16 Bela Thomas Sandor Improvements in or relating to the drying of grain and similar materials
GB954572A (en) * 1961-12-11 1964-04-08 Head Wrightson & Co Ltd Method of drying wet strip material
FR1453810A (fr) * 1964-08-13 1966-07-22 Inst Badan Jadrowych Procédé et installation pour le chauffage indirect de matières en grains
EP0124294A2 (en) * 1983-04-05 1984-11-07 Cactus Machinery Inc. Apparatus for conditioning hygroscopie plastic material
WO1988002090A1 (en) * 1986-09-16 1988-03-24 Chelyabinsky Konstruktorsko-Tekhnologichesky Insti Installation for conductive drying of bulk materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566604A4 (en) * 2002-10-21 2012-11-14 Kabushikikaisha Matsui Seisakusho DRYING DEVICE FOR POWDER MATERIAL
WO2010089721A1 (en) * 2009-02-09 2010-08-12 Christian Schiavolin Dehumidifier for plastics materials

Also Published As

Publication number Publication date
DE3826047C2 (en, 2012) 1990-07-12
US4964227A (en) 1990-10-23
JPH0278888A (ja) 1990-03-19
DE3826047A1 (de) 1990-02-01
JPH0723832B2 (ja) 1995-03-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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