EP0447671A1 - Procédé et dispositif pour sécher des matériaux humides dans un lit fluidisé - Google Patents

Procédé et dispositif pour sécher des matériaux humides dans un lit fluidisé Download PDF

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Publication number
EP0447671A1
EP0447671A1 EP90125367A EP90125367A EP0447671A1 EP 0447671 A1 EP0447671 A1 EP 0447671A1 EP 90125367 A EP90125367 A EP 90125367A EP 90125367 A EP90125367 A EP 90125367A EP 0447671 A1 EP0447671 A1 EP 0447671A1
Authority
EP
European Patent Office
Prior art keywords
fluidized bed
bed chamber
heating system
chamber
wall
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Withdrawn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
EP90125367A
Other languages
German (de)
English (en)
Inventor
Helmut Mätzig
Jörg Peters
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0447671A1 publication Critical patent/EP0447671A1/fr
Withdrawn legal-status Critical Current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
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/084—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems

Definitions

  • the invention relates to a method and an apparatus for drying moist materials in a fluidized bed, the drying being carried out by indirect heat transfer from a heating system arranged in a vortex chamber to the materials.
  • the object of the invention is to provide a method and a suitable device for drying moist materials in a fluidized bed, by means of which the aforementioned disadvantages are eliminated.
  • this object is achieved in that the wall of the fluidized bed chamber is heated to the same temperature as the heating system in the fluidized bed chamber.
  • expansion differences between the heating system and the wall of the fluidized bed chamber are very advantageously avoided, so that special expansion and sealing elements between the heating system and the wall of the fluidized bed chamber can be omitted.
  • Another and particular advantage of the method according to the invention is that the fact that the wall of the fluidized bed chamber is heated to the same temperature as the heating system in the fluidized bed chamber achieves an all-round, uniform and optimal heat transfer to the entire materials in the fluidized bed chamber is, which among other things enables a significant increase in throughput with otherwise the same dimensions of the fluidized bed chamber.
  • the wall of the fluidized bed chamber is charged with the same heating media as the heating system in the fluidized bed chamber. In this way, a simplification of the heating medium supply into the heating system and into the wall of the fluidized bed chamber is achieved.
  • the device for carrying out the method according to the invention consists of a substantially vertically running fluidized bed chamber (1) with a rectangular cross section with a central feed (2) from above and a fluidization feed line (3) from below and with Discharge (4 and 5) for the dried solids and vapors.
  • a substantially vertically running fluidized bed chamber (1) with a rectangular cross section with a central feed (2) from above and a fluidization feed line (3) from below and with Discharge (4 and 5) for the dried solids and vapors.
  • On the housing of the fluidized bed chamber further known discharges for the solids, not shown in the drawing, can also be arranged.
  • the side walls (6 and 7) of the fluidized bed chamber (1) according to the invention as shown in particular in FIG.
  • Both the vertically extending pipes (8 and 9) in the walls (6 and 7) and the horizontally arranged ones Pipes (12) in the rear wall (11) and the front wall are connected to one another by web-like transverse walls (13 and 14 indicated by dashed lines) and form so-called pipe membrane walls, while the transverse connecting pipes (10) represent the heating system in the fluidized bed chamber.
  • the tubes (8, 9, 12) of the fluidized bed chamber walls (6, 7, 11) via the manifold (15) are in open connection with the transverse connecting pipes (10), the walls of the fluidized bed chamber and that can be very advantageous from the connecting pipes (10) existing heating system of the fluidized bed chamber are charged with the same heating media for indirect heat transfer to the materials to be dried.
  • the tubes forming the walls of the fluidized bed chamber and the tubes of the heating system with the heating media are charged via the collecting line (15) arranged on the left in the wall (6) of the fluidized bed chamber, and the heating media are withdrawn from the fluidized bed chamber and the tubes (8, 9, 10, 12) takes place on the lower right side via a manifold (16).
  • the wall of the fluidized bed chamber is heated to the same temperature with the same heat transfer elements as the heating system in the fluidized bed chamber, any expansion compensation elements between the heating jacket of the fluidized bed chamber and the heating system can be omitted.
  • the fluidized bed chamber designed according to the invention is that the entire material volume of the fluidized bed is uniformly interspersed with the heat transfer elements (connecting pipes 10), whereby dead spaces or other disruptive effects on the fluidized bed are completely eliminated. Furthermore, the configuration of the fluidized bed chamber according to the invention considerably increases the heat transfer area to the materials to be dried, as a result of which, with a high throughput capacity, construction volume and energy for drying the moist materials in the fluidized bed can be saved.
  • the wall of the fluidized bed chamber can also be very advantageously composed of several individual segments (17 and 18) - so-called modules - which entail lower manufacturing costs and which can be replaced very easily in the event of a defect are.
  • Heating system may also advantageously be arranged separately from one another and fed separately from one another with the same or different heating media. It is also essential here that the walls of the fluidized bed chamber are heated to the same temperature as the heating system in the fluidized bed chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP90125367A 1990-03-20 1990-12-22 Procédé et dispositif pour sécher des matériaux humides dans un lit fluidisé Withdrawn EP0447671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008903 1990-03-20
DE19904008903 DE4008903A1 (de) 1990-03-20 1990-03-20 Verfahren und vorrichtung zum trocknen von feuchten materialien in einer wirbelschicht

Publications (1)

Publication Number Publication Date
EP0447671A1 true EP0447671A1 (fr) 1991-09-25

Family

ID=6402629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125367A Withdrawn EP0447671A1 (fr) 1990-03-20 1990-12-22 Procédé et dispositif pour sécher des matériaux humides dans un lit fluidisé

Country Status (2)

Country Link
EP (1) EP0447671A1 (fr)
DE (1) DE4008903A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802384A3 (fr) * 1996-04-17 1999-03-10 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Echangeur de chaleur

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518777A (en) * 1968-01-29 1970-07-07 Motomi Kono Heat exchange apparatus for fluidizing particulate material
CH519691A (de) * 1970-04-17 1972-02-29 Inst Teplo I Massoobmena Akade Verfahren zum Trocknen von Stoffen in disperser Phase und Anlage zur Durchführung des Verfahrens
DE2611268B1 (de) * 1975-10-17 1976-11-18 Glatt Maschinen Und Appbau Ag Wirbelschichttrockner
DE3400397A1 (de) * 1983-05-18 1984-11-22 VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg Vorrichtung zur strahlschichttrocknung klebrig-koerniger und thermolabiler stoffe
DE3400400A1 (de) * 1983-05-18 1984-11-22 VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg Vorrichtung zur trocknung thermolabiler zum anbacken neigender produkte
WO1988004018A1 (fr) * 1986-11-22 1988-06-02 Bergwerksverband Gmbh Reacteur a lit fluidise avec un logement moule en acier allie
EP0305706A2 (fr) * 1987-08-31 1989-03-08 BABCOCK-BSH AKTIENGESELLSCHAFT vormals Büttner-Schilde-Haas AG Tambour rotatif
DE3938434A1 (de) * 1988-12-20 1990-06-21 Waagner Biro Ag Einrichtung zur indirekten beheizung eines wirbelbetttrockners

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518777A (en) * 1968-01-29 1970-07-07 Motomi Kono Heat exchange apparatus for fluidizing particulate material
CH519691A (de) * 1970-04-17 1972-02-29 Inst Teplo I Massoobmena Akade Verfahren zum Trocknen von Stoffen in disperser Phase und Anlage zur Durchführung des Verfahrens
DE2611268B1 (de) * 1975-10-17 1976-11-18 Glatt Maschinen Und Appbau Ag Wirbelschichttrockner
DE3400397A1 (de) * 1983-05-18 1984-11-22 VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg Vorrichtung zur strahlschichttrocknung klebrig-koerniger und thermolabiler stoffe
DE3400400A1 (de) * 1983-05-18 1984-11-22 VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg Vorrichtung zur trocknung thermolabiler zum anbacken neigender produkte
WO1988004018A1 (fr) * 1986-11-22 1988-06-02 Bergwerksverband Gmbh Reacteur a lit fluidise avec un logement moule en acier allie
EP0305706A2 (fr) * 1987-08-31 1989-03-08 BABCOCK-BSH AKTIENGESELLSCHAFT vormals Büttner-Schilde-Haas AG Tambour rotatif
DE3938434A1 (de) * 1988-12-20 1990-06-21 Waagner Biro Ag Einrichtung zur indirekten beheizung eines wirbelbetttrockners

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802384A3 (fr) * 1996-04-17 1999-03-10 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Echangeur de chaleur

Also Published As

Publication number Publication date
DE4008903A1 (de) 1991-09-26

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