EP0611937A1 - Malaxeur-sécheur - Google Patents

Malaxeur-sécheur Download PDF

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Publication number
EP0611937A1
EP0611937A1 EP93120513A EP93120513A EP0611937A1 EP 0611937 A1 EP0611937 A1 EP 0611937A1 EP 93120513 A EP93120513 A EP 93120513A EP 93120513 A EP93120513 A EP 93120513A EP 0611937 A1 EP0611937 A1 EP 0611937A1
Authority
EP
European Patent Office
Prior art keywords
mixer
housing
dryer according
drying gas
interior
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
EP93120513A
Other languages
German (de)
English (en)
Other versions
EP0611937B1 (fr
Inventor
Peter Illing
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.)
Draiswerke GmbH
Original Assignee
Draiswerke 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6889417&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0611937(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Draiswerke GmbH filed Critical Draiswerke GmbH
Publication of EP0611937A1 publication Critical patent/EP0611937A1/fr
Application granted granted Critical
Publication of EP0611937B1 publication Critical patent/EP0611937B1/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
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F26B25/007—Dust filtering; Exhaust dust filters

Definitions

  • the invention relates to a mixer-dryer according to the preamble of claim 1.
  • mixer-dryers that work as contact dryers for continuous drying, i.e. the housing wall and possibly the mixing tools are heated. These mixer-dryers are also not very effective.
  • the invention has for its object to design a mixer-dryer of the generic type so that on the one hand a good mixture and on the other hand a highly effective drying of the material is achieved.
  • the continuously operating mixer-dryer Due to its drive as a push or throw mixer, the continuously operating mixer-dryer generates a loosened material bed through which drying gas, generally heated gas, is blown through over its essentially full length is achieved, whereby a further loosening and thereby an intensive contact between drying gas and material is achieved.
  • the drying gas is also drawn off over almost the entire length of the housing, ie the drying gas is traversed over the full length of the drying gas in cross flow. There is no restriction of the drying gas flow. Since the filters are also arranged essentially over the full length of the housing, on the one hand there is a reliable separation of material which the drying gas stream has carried along, and on the other hand no appreciable pressure drop occurs outside the material bed.
  • the mixer-dryer shown in the drawing has a basically cylindrical housing 1 with a horizontal central longitudinal axis 2.
  • the housing 1 is closed at its end faces with end walls 6, 7.
  • the housing 1 is supported by supports 8, 9 against a floor foundation 10.
  • shaft bearings 11, 12 are attached, in which a shaft 13 of a mixing mechanism 14, which is arranged concentrically to the central longitudinal axis 2, is rotatably mounted.
  • the mixer 14 can be driven in rotation about the axis 2 by means of a motor 15 which is coupled to the shaft 13 via a V-belt drive 16.
  • a material supply nozzle 18 which is attached to the top of the housing 1.
  • a material outlet connection 19 opens from the interior 17 thereof.
  • mixing tools 20 there are numerous mixing tools 20, each consisting essentially of a mixing blade 22 located in the area of the inner wall 21 of the housing 1 and a rod 23 connecting it to the shaft 13.
  • the mixing blades 22 are relatively large and are set in the axial conveying direction 24 and in the direction of rotation 25 of the shaft 13 in such a way that they carry or convey the pourable material 26 fed through the feed nozzle 18 in the direction of rotation 25 and in the conveying direction 24.
  • stripping tools 27, 28 are attached to the shaft 13, by means of which material 26 which may adhere to the end walls 6, 7 is stripped off.
  • the mixing blades 22 completely overlap one another in the direction of the axis 2, so that all the peripheral regions of the inner wall 21 are swept by the mixing blades 22, thereby precluding the formation of dead spaces.
  • the mixer-dryer is a continuously operating push or throw mixer, in which the material 26 is shifted in the mixed material bed by means of the mixing blades 22 or is torn out of it and falls back into the mixed material bed in a parabolic throw path.
  • Such thrust or throwing mixers are driven at 0.5 to 10 times the critical speed.
  • the critical speed is understood to mean the speed of the mixing mechanism 14 at which gravitational acceleration occurs at the radially outer ends of the mixing blades 22.
  • a continuously open outlet opening 29 opening into the material outlet connection 19 is formed at the - in the conveying direction 24 rear end of the interior 17 - that is, directly adjacent to the rear end wall 7 of the housing 1.
  • An overflow weir 30 is formed in the conveying direction 24 immediately before this outlet opening 29, in order to ensure a sufficient dwell time of the material to be mixed by means of a degree of filling corresponding to this.
  • On the shaft 13 two further scraping tools 31, 32 are attached, which sweep over the overflow weir 30 in the form of a plate on both sides and thus also prevent buildup of material to be mixed. Insofar as the mixer has been described so far, it is generally known and widespread in practice.
  • drying gas supply chambers 34, 35 are attached to the outside thereof, which - as can be seen in FIG. 1 - each extend over almost half the length of the housing 1, namely from its end wall 6, which is the material Feed pipe 18 faces up to the material outlet pipe 19.
  • These drying gas supply chambers 34, 35 are connected to the interior 17 of the housing 1 via perforated plates 36, 37.
  • the perforated bottoms 36, 37 are partially cylindrical and are adapted to the inner wall 21 of the housing 1. As can be seen in FIG. 2, they each extend approximately symmetrically to the vertical center-symmetry plane 38 of the housing 1 by 30 °.
  • the compressed gas supply boxes 34, 35 each have a drying gas connection 39, 40 on their side opposite the perforated plates 36 and 37, to which a compressed gas supply line (not shown) can be connected, through which compressed gas can be supplied in accordance with the flow direction arrow 41.
  • a box-shaped structure 43 is attached to the upper side 42 of the housing 1 and extends - in the conveying direction 24 - from the material supply nozzle 18 to the rear end wall 7 of the housing 1.
  • a filter box 44 is placed on this box-shaped structure 43, in which - in the conveying direction 24 one after the other - several cylindrical filters 45 are arranged, which are connected to a drying gas exhaust box 46 placed on the filter box 44.
  • the drying gas outlet box 46 opens into a drying gas outlet 47 through which compressed gas flows out in the outflow direction 48.
  • disagglomeration devices 49 in the form of so-called knife mills can be provided in a known manner, which essentially consist of a motor 50 attached to the outside of the housing 1 and a motor 50 that runs into the interior 17 of the housing 1 and can be driven by the motor 50 at high speed Shaft 51 exist on which knives 52 are attached, by means of which material packages, so-called agglomerates, can be comminuted.
  • the material 26 fed into the interior 17 through the material supply nozzle 18 is moist and is to be dried with simultaneous mixing.
  • the compressed gas supply boxes 34, 35 and the perforated plates 36, 37 optionally heated drying gas which flows through the material bed 26 loosened by means of the mixer 14, namely over its full length from the end wall 6 to the overflow weir 30.
  • the drying gas moistened with the moisture of the material 26 occurs in the approximately full length of the housing 1 extending filter box 44, where the material 26 entrained by the drying gas is separated by the filter 45. Only the drying gas laden with moisture emerges through the filters 45.
  • the perforated trays 36, 37 assigned to them can be of different sizes. Furthermore, the width of a perforated base 36 can change over the length of the housing 1, for example such an perforated base 36, 37 can be trapezoidal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP93120513A 1993-02-15 1993-12-20 Malaxeur-sécheur Expired - Lifetime EP0611937B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9302136U 1993-02-15
DE9302136U DE9302136U1 (fr) 1993-02-15 1993-02-15

Publications (2)

Publication Number Publication Date
EP0611937A1 true EP0611937A1 (fr) 1994-08-24
EP0611937B1 EP0611937B1 (fr) 1998-10-14

Family

ID=6889417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120513A Expired - Lifetime EP0611937B1 (fr) 1993-02-15 1993-12-20 Malaxeur-sécheur

Country Status (3)

Country Link
EP (1) EP0611937B1 (fr)
DE (2) DE9302136U1 (fr)
ES (1) ES2123610T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002092187A1 (fr) * 2001-05-16 2002-11-21 Thermtech As Procede et dispositif permettant de separer du petrole de materiaux renfermant du petrole
EP1406054A1 (fr) * 2002-10-04 2004-04-07 Edwin Eisenegger Dispositif pour le traitement de matière en vrac
US7155842B2 (en) * 2002-01-16 2007-01-02 Ralf Oliver Petri Microwave mixer/dryer reactor for industrial use
NO339254B1 (no) * 2013-05-22 2016-11-21 Multivector As Anordning for virvling og tørking av minst ett fragmentert stoff
NO339253B1 (no) * 2013-05-22 2016-11-21 Multivector As Fremgangsmåte og system for behandling av minst ett stoff til et tørket, fragmentert, virvlet sluttprodukt
US10260803B2 (en) 2013-05-22 2019-04-16 Waister As Method, a system and devices for processing at least one substance in a dried, fragmented, fluidized end product

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712076B1 (fr) * 1993-11-04 1996-01-26 Gwozdz Eugene Séchoir pour produits humides, notamment de boues de station d'épuration.
DE102004048875A1 (de) 2004-10-07 2006-04-13 Bayer Materialscience Ag Verfahren zur Herstellung von cyclischen Ketonen

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE174842C (fr) *
DE125361C (fr) * 1899-10-20 1901-11-23
US1642469A (en) * 1926-07-13 1927-09-13 Compton J Tucker Apparatus for drying hay or other products
US2639515A (en) * 1948-12-16 1953-05-26 Ruth Rand Simon Drier and method
US3456357A (en) * 1968-02-05 1969-07-22 Commercial Solvents Corp Process for continuous automated vibrational drying of explosives and apparatus
FR2452076A1 (fr) * 1979-03-21 1980-10-17 Richter Gedeon Vegyeszet Equipement pour le sechage et la granulation de matieres humides, pateuses et/ou fusibles
DE3024710A1 (de) * 1980-06-30 1982-01-21 Helmut 4740 Oelde Haupt Trockner fuer rieselfaehige gueter
EP0090261A2 (fr) * 1982-03-30 1983-10-05 Kurimoto, Ltd. Appareil de séchage
GB2116872A (en) * 1982-03-15 1983-10-05 Italiana Essiccatoi Drying apparatus with air filter
DE9106640U1 (fr) * 1991-05-30 1991-07-18 Dietrich Reimelt Kg, 6074 Roedermark, De
EP0438772A1 (fr) * 1990-01-25 1991-07-31 Draiswerke GmbH Mélangeur

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE174842C (fr) *
DE125361C (fr) * 1899-10-20 1901-11-23
US1642469A (en) * 1926-07-13 1927-09-13 Compton J Tucker Apparatus for drying hay or other products
US2639515A (en) * 1948-12-16 1953-05-26 Ruth Rand Simon Drier and method
US3456357A (en) * 1968-02-05 1969-07-22 Commercial Solvents Corp Process for continuous automated vibrational drying of explosives and apparatus
FR2452076A1 (fr) * 1979-03-21 1980-10-17 Richter Gedeon Vegyeszet Equipement pour le sechage et la granulation de matieres humides, pateuses et/ou fusibles
DE3024710A1 (de) * 1980-06-30 1982-01-21 Helmut 4740 Oelde Haupt Trockner fuer rieselfaehige gueter
GB2116872A (en) * 1982-03-15 1983-10-05 Italiana Essiccatoi Drying apparatus with air filter
EP0090261A2 (fr) * 1982-03-30 1983-10-05 Kurimoto, Ltd. Appareil de séchage
EP0438772A1 (fr) * 1990-01-25 1991-07-31 Draiswerke GmbH Mélangeur
DE9106640U1 (fr) * 1991-05-30 1991-07-18 Dietrich Reimelt Kg, 6074 Roedermark, De

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002092187A1 (fr) * 2001-05-16 2002-11-21 Thermtech As Procede et dispositif permettant de separer du petrole de materiaux renfermant du petrole
US7396433B2 (en) 2001-05-16 2008-07-08 Thermtech As Process and arrangement for separating oil from oil containing materials
US7155842B2 (en) * 2002-01-16 2007-01-02 Ralf Oliver Petri Microwave mixer/dryer reactor for industrial use
EP1406054A1 (fr) * 2002-10-04 2004-04-07 Edwin Eisenegger Dispositif pour le traitement de matière en vrac
NO339254B1 (no) * 2013-05-22 2016-11-21 Multivector As Anordning for virvling og tørking av minst ett fragmentert stoff
NO339253B1 (no) * 2013-05-22 2016-11-21 Multivector As Fremgangsmåte og system for behandling av minst ett stoff til et tørket, fragmentert, virvlet sluttprodukt
US10260803B2 (en) 2013-05-22 2019-04-16 Waister As Method, a system and devices for processing at least one substance in a dried, fragmented, fluidized end product

Also Published As

Publication number Publication date
DE59309062D1 (de) 1998-11-19
ES2123610T3 (es) 1999-01-16
DE9302136U1 (fr) 1993-04-01
EP0611937B1 (fr) 1998-10-14

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