EP0660059A1 - Dispositif pour sécher du matériau en vrac - Google Patents

Dispositif pour sécher du matériau en vrac Download PDF

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Publication number
EP0660059A1
EP0660059A1 EP94118377A EP94118377A EP0660059A1 EP 0660059 A1 EP0660059 A1 EP 0660059A1 EP 94118377 A EP94118377 A EP 94118377A EP 94118377 A EP94118377 A EP 94118377A EP 0660059 A1 EP0660059 A1 EP 0660059A1
Authority
EP
European Patent Office
Prior art keywords
container
air
bulk
bulk material
drying
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
EP94118377A
Other languages
German (de)
English (en)
Other versions
EP0660059B1 (fr
Inventor
Achim Becker
Michael Zlotos
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.)
Somos GmbH
Original Assignee
Somos 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 Somos GmbH filed Critical Somos GmbH
Publication of EP0660059A1 publication Critical patent/EP0660059A1/fr
Application granted granted Critical
Publication of EP0660059B1 publication Critical patent/EP0660059B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/083—Humidity by using sorbent or hygroscopic materials, e.g. chemical substances, molecular sieves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
    • F26B9/103—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof using fixed or removable drying air channels placed in the stack, e.g. horizontally or vertically

Definitions

  • the invention relates to a device for drying bulk goods according to the preamble of the main claim.
  • Such a device is known from DE-GM 89 10 764.2.
  • the known device feeds the dried air to the bulk material container via a flanged pipe, is heated by an electric heater and flows into the bulk material to be dried in the lower region of the bulk material container.
  • the bulk material is heated with this device directly in the area of the container outlet.
  • the warm, dry air flows upwards, heats the bulk material and extracts moisture from it, which is extracted in the upper area of the container by an exhaust air outlet.
  • a disadvantage of this known device is to be seen in the fact that the air supply pipe is surrounded by bulk material and the bulk material directly adjacent to the air supply pipe is heated very strongly and may be thermally damaged.
  • the entry temperature of the dry air into the granulate is lower than the temperature measured with the temperature sensor, because on the way through the cold granulate or .Cool return air downwards causes considerable radiation losses and thus cools the dry air.
  • the temperature sensor is arranged directly in the lower part of the air distributor, this means that the air temperature in the upper part of the air supply pipe is significantly higher and the granules which are in direct contact with the pipe are therefore subjected to an excess temperature treatment.
  • the invention is therefore based on the object of avoiding the disadvantages mentioned and of providing a device for drying bulk material, in which a uniform drying of the bulk material is possible with low temperature losses and a uniform temperature distribution both vertically and is given horizontally.
  • the main advantage of the invention can be seen in the fact that the thermal energy of the dried air or the dried gas is now made available directly where it is needed, namely at the drying hopper, namely to the temperature value as specified by the control system. An undefined release of heat can be effectively prevented with the invention.
  • the invention shows a further increase in efficiency.
  • the amount of air throughput through the bulk material drying container is reduced with increasing exhaust air temperature and increased with decreasing exhaust air temperature.
  • the exhaust air temperature is measured directly at the air outlet of the container or in the return air line.
  • the thermal insulation of the pipe, which supplies the dried air to the bulk material container effectively prevents the exhaust air temperature from being falsified.
  • the invention can be used for drying plastic granules, it can be used in the same way for post-condensation of PET. Here, too, it is particularly important to achieve a uniform temperature profile for the granulate over a long residence time.
  • the drying hopper which is also called the reactor in the post-condensation of PET, can also be equipped with a hopper wall heating.
  • this is thermally insulated Tube designed as a double-walled tube.
  • the space between the two pipes can be evacuated or filled with a heat-insulating gas
  • An alternative embodiment provides for the tube to be provided with an inner, flexible and temperature-resistant hose. This also creates a double-walled tube. The heat transfer can be greatly reduced by using a suitable hose material.
  • the heating device for heating the dry gas either in the pipe running inside the container or directly at the entrance of the pipe into the container. This can minimize heat conduction losses.
  • the drawing shows: a bulk container for drying bulk material in a sectional view.
  • the drawing schematically shows a bulk container 10 with a filler neck 25 through which the bulk material 18 is fed, a bulk material removal 23 and a device 12 for blowing in the dry and heated air.
  • An air drying device 11 is provided for generating dry air. This is supplied with moist air via an exhaust air line 14. The dehumidified air reaches the bulk goods container 10 via a supply air line 13.
  • a Air drying device 11 is generally known and described for example in DE-PS 31 31 471.
  • the drying air is in a closed air circuit and is moved by a fan which is arranged in the air drying device.
  • the dry air supplied to the container 10 via the line 13 passes through a heating station 15 and then at the upper region of the container via a flange connection 16 into the interior of the container.
  • the pipe 17 arranged inside the container 10 for guiding the heated dry air into the lower region of the container is double-walled.
  • the space between the two tubes can be evacuated or filled with a gas.
  • the heated and dried gas flows into the bulk material to be dried via an air distributor 18, absorbs the moisture and supplies it to the air drying device 11 via the line 14.
  • the device according to the invention is also able to increase the efficiency and process reliability in the post-condensation of PET.
  • the drying process takes place in a manner similar to the drying process shown here, temperatures of 200 ° C. and residence times of over 20 hours having to be observed.
  • it is particularly important to achieve a uniform temperature profile for the granulate over the long residence time.
  • the drying hopper which is also called the reactor, also has a hopper wall heating, for example in the manner of a double jacket with an oil circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP94118377A 1993-12-24 1994-11-23 Dispositif pour sécher du matériau en vrac Expired - Lifetime EP0660059B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344593A DE4344593C1 (de) 1993-12-24 1993-12-24 Vorrichtung zum Trocknen von Schüttgut
DE4344593 1993-12-24

Publications (2)

Publication Number Publication Date
EP0660059A1 true EP0660059A1 (fr) 1995-06-28
EP0660059B1 EP0660059B1 (fr) 1999-06-09

Family

ID=6506307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118377A Expired - Lifetime EP0660059B1 (fr) 1993-12-24 1994-11-23 Dispositif pour sécher du matériau en vrac

Country Status (5)

Country Link
US (1) US5509216A (fr)
EP (1) EP0660059B1 (fr)
JP (1) JP2695388B2 (fr)
AT (1) ATE181150T1 (fr)
DE (2) DE4344593C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114812122A (zh) * 2022-05-24 2022-07-29 华能铜川照金煤电有限公司西川煤矿分公司 一种煤炭选矿用烘干装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412467B (de) * 2001-05-31 2005-03-25 Luger Ges M B H Vorrichtung zur saug- oder druckförderung von staub- oder granulatförmigem material
DE10352106B4 (de) * 2003-11-04 2016-12-15 Roderich W. Gräff Verfahren zur Steuerung des Gasdurchsatzes durch Schüttgüter
ITPD20040258A1 (it) * 2004-10-18 2005-01-18 Moretto P A Srl Tramoggia per la deumidificazione di materiale particolato sfuso
DE202013100731U1 (de) * 2013-02-19 2014-05-20 Digicolor Gmbh Vorrichtung zum Trocknen von Kunststoffgranulat
CN103486840A (zh) * 2013-09-27 2014-01-01 深圳市福田区青少年科技教育协会 一种快速烘干器
CN112229165B (zh) * 2020-11-04 2023-11-07 中国科学院理化技术研究所 水平式热泵干燥系统及其工作方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB145224A (en) * 1919-05-17 1920-07-02 Charley Tinker An improved device for drying hay, straw and the like products
US3913242A (en) * 1974-09-11 1975-10-21 Gear Co M W Preheater for grain dryer
US4038758A (en) * 1975-09-30 1977-08-02 Miller Russell A Grain dryer
FR2569471A1 (fr) * 1984-08-24 1986-02-28 Surier Albert Sechoir a cereales
DE3637700A1 (de) * 1986-11-05 1988-05-19 Motan Gmbh Verfahren zum regenerieren einer mit feuchtigkeit beladenen trocknungspatrone sowie vorrichtung zur durchfuehrung eines solchen verfahrens

Family Cites Families (25)

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Publication number Priority date Publication date Assignee Title
US1829477A (en) * 1925-12-30 1931-10-27 Douthitt Frank Howard Process of and apparatus for drying liquids
US3920624A (en) * 1974-01-14 1975-11-18 Du Pont Process for stripping residual solvent from polymer pellets and apparatus
DE2632054C3 (de) * 1976-07-16 1982-05-27 Hoechst Ag, 6000 Frankfurt Verfahren zur Trocknung von chloriertem Polyäthylen
GB1590532A (en) * 1976-08-04 1981-06-03 Exxon Research Engineering Co Elastomer extrusion drying with gas injection
DE2715790A1 (de) * 1977-04-07 1978-10-12 Polysius Ag Schwebegasvorwaermer fuer feingut
US4199872A (en) * 1977-09-08 1980-04-29 Foster Wheeler Energy Corporation Regeneration apparatus for producing sulfur dioxide
DE2800952A1 (de) * 1978-01-11 1979-07-12 Hoechst Ag Verfahren und anlage zur trocknung von chlorierten polymeren
US4241021A (en) * 1979-05-14 1980-12-23 Stauffer Chemical Company Fluidized bed reactor system
EP0041941B1 (fr) * 1980-06-06 1984-03-07 Waagner-Biro Aktiengesellschaft Procédé de réglage du percoulage d'une chambre de refroidissement
DE3131471A1 (de) * 1981-03-20 1982-09-30 Roderich Wilhelm Dr.-Ing. 6100 Darmstadt Gräff Vorrichtung zum trocknen feuchter abluft aus einem oder mehreren schuettgut-trocknungsbehaeltern
DE3234431A1 (de) * 1982-09-17 1984-03-22 Roderich Wilhelm Dr.-Ing. 6100 Darmstadt Gräff Verfahren und vorrichtung zur abfuehrung von gasen und daempfen aus mit schuettgut gefuelltem trocknungstrichter
JPS59174130A (ja) * 1983-03-25 1984-10-02 株式会社日立製作所 電気掃除機
FR2551453B1 (fr) * 1983-08-31 1985-10-11 Fives Cail Babcock Gazeificateur de charbon en lit fluidise sous une haute pression
JPS6172126A (ja) * 1984-09-17 1986-04-14 Asahi Chem Ind Co Ltd 防禦壁体の構築方法
US4706390A (en) * 1986-04-14 1987-11-17 John A. Kitchen Ltd. Dehydrator
FR2626284B1 (fr) * 1988-01-26 1990-06-08 Total France Appareil pour le craquage catalytique en lit fluidise d'une charge d'hydrocarbures
DE3901597A1 (de) * 1988-03-16 1989-09-28 Amboss & Langbein Kg Behaelter fuer kunststoff-rohmaterial
DE8803539U1 (de) * 1988-03-16 1988-05-11 Amboß + Langbein KG, 5657 Haan Behälter für Kunststoff-Rohmaterial
JPH0612211B2 (ja) * 1988-10-27 1994-02-16 株式会社松井製作所 合成樹脂材料等の乾燥装置
DE3929898A1 (de) * 1989-09-08 1991-03-21 Graeff Roderich Wilhelm Verfahren und vorrichtung zum foerdern getrockneten kunststoffgranulats
DE8910763U1 (de) * 1989-09-09 1991-01-17 Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg Vorrichtung zum Trocknen von Schüttgut
DE8910764U1 (de) * 1989-09-09 1989-11-16 Strack-Norma Gmbh, 5600 Wuppertal Blockspanner zum Aufspannen von für Spritz- und Druckgießwerkzeuge bestimmten Formplatten
DE4006935A1 (de) * 1990-03-06 1991-09-12 Wacker Chemie Gmbh Fliessbettapparatur zum mischen, trocknen und beschichten von pulvrigem, koernigem und geformtem schuettgut
DE4029525A1 (de) * 1990-09-18 1992-03-19 Umwelt & Energietech Verfahren und vorrichtung zum trocknen von feststoffmaterialien in einem indirekt beheizten wirbelschichtbett
US5372791A (en) * 1992-04-20 1994-12-13 Foster Wheeler Energy Corporation Fluidized bed system and a fluidization and cooling nozzle for use therein

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB145224A (en) * 1919-05-17 1920-07-02 Charley Tinker An improved device for drying hay, straw and the like products
US3913242A (en) * 1974-09-11 1975-10-21 Gear Co M W Preheater for grain dryer
US4038758A (en) * 1975-09-30 1977-08-02 Miller Russell A Grain dryer
FR2569471A1 (fr) * 1984-08-24 1986-02-28 Surier Albert Sechoir a cereales
DE3637700A1 (de) * 1986-11-05 1988-05-19 Motan Gmbh Verfahren zum regenerieren einer mit feuchtigkeit beladenen trocknungspatrone sowie vorrichtung zur durchfuehrung eines solchen verfahrens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114812122A (zh) * 2022-05-24 2022-07-29 华能铜川照金煤电有限公司西川煤矿分公司 一种煤炭选矿用烘干装置

Also Published As

Publication number Publication date
JPH07198256A (ja) 1995-08-01
ATE181150T1 (de) 1999-06-15
EP0660059B1 (fr) 1999-06-09
US5509216A (en) 1996-04-23
DE4344593C1 (de) 1995-02-16
JP2695388B2 (ja) 1997-12-24
DE59408392D1 (de) 1999-07-15

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