EP0312803A2 - Process and apparatus for conditioning bulk material - Google Patents

Process and apparatus for conditioning bulk material Download PDF

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Publication number
EP0312803A2
EP0312803A2 EP88115775A EP88115775A EP0312803A2 EP 0312803 A2 EP0312803 A2 EP 0312803A2 EP 88115775 A EP88115775 A EP 88115775A EP 88115775 A EP88115775 A EP 88115775A EP 0312803 A2 EP0312803 A2 EP 0312803A2
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EP
European Patent Office
Prior art keywords
bulk material
fine
auxiliary material
zone
patent application
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.)
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EP88115775A
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German (de)
French (fr)
Other versions
EP0312803A3 (en
Inventor
Hartmut Dr. Dipl.-Ing. Hederer
Wolfgang Dr. Dipl.-Chem. Hillebrand
Manfred Dipl.-Ing. Kreft
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ThyssenKrupp Industrial Solutions AG
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Uhde GmbH
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Filing date
Publication date
Priority claimed from DE19873735954 external-priority patent/DE3735954A1/en
Application filed by Uhde GmbH filed Critical Uhde GmbH
Publication of EP0312803A2 publication Critical patent/EP0312803A2/en
Publication of EP0312803A3 publication Critical patent/EP0312803A3/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • 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
    • F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
    • F26B17/006—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors the movement being imparted by oscillation or vibration
    • 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
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/22—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration

Definitions

  • the invention relates to a method and an apparatus for conditioning bulk material, in particular lignite, hard coal, activated carbon, peat, wood waste, sewage sludge, waste sludge, contaminated soil, catalysts, zeolites and filter cakes containing evaporable constituents, the material being set in motion by means of a vibratory conveyor , is treated successively in a heating zone and a drying zone by indirect heat exchange, according to patent application P 36 40 610.4.
  • the invention is therefore based on the object of changing the treatment properties of bulk material with a broad grain size spectrum and a wide variety of material properties as early and sustainably as possible in the conditioning process.
  • This object is achieved in relation to the method according to the invention in that a fine-grained auxiliary material is added to the bulk material.
  • auxiliary material is preferably added to the bulk material material in variable proportions, from 5 to 25% by weight.
  • the grain size of the bulk material should be in the range ⁇ 1 mm, preferably from 0.02 to 0.05 mm. If the auxiliary material is not to remain in the dried bulk material, the auxiliary material is not added to the dried bulk material material after the last separation.
  • the heated bulk material mixed with auxiliary material is fed directly from the drying zone to a cooling zone in the vibratory conveyor, where it is sealed off with an inert gas is indirectly cooled to at least 60 ° C.
  • Fig. 6 Arranged with cutting plates in a straight and / or curved, ploughshare-like shape in the direction of rotation and on different radii on one or more oscillating plates can also be used to treat moist bulk material that normally tends to form pellets on the oscillating plates.
  • the cutting plates constantly break up the flatbreads that form and, in conjunction with turning strips, ensure good mixing of the fine-grained auxiliary material.
  • Fig. 6 from patent application P 36 40 610.4 here Fig. 1, has the cutting plates 26 on the plates 6.1 and 6.2. The operation of the cutting plates 26 is shown in side and top views in FIGS. 2a and 2b. The cutting plates also act as spiral strips.
  • the addition of the fine-grained auxiliary material to the bulk material in the heating and / or drying zone significantly increases the heat absorption from the vibrating plates. This allows shorter drying times to be achieved.
  • the passage of the hot fine-grained auxiliary material falling down from the upper vibrating plate through the coarser bulk material on the lower vibrating plate depends on the grain size spectra of both substances and on their bulk density differences.
  • the conditioning process can be consciously controlled with the targeted addition of fine-grained special auxiliary material.
  • a damp, possibly even sticky bulk material e.g. contaminated soil or damp coal is already dry, possibly ground own material, which can also come from a cyclone, as fine-grained auxiliary material. This can also be sand to improve the soil structure.
  • damp heating material e.g. Lignite or hard coal are dried and if later addition of lime or dolomite is provided in the combustion process, this lime or dolomite can already be added as a dry auxiliary material for the conditioning of the raw coal.
  • auxiliary material which itself does not take part in the drying process
  • active auxiliary material which, due to its structure or nature, absorbs moisture itself and thus accelerates conditioning.
  • active auxiliary material are molecular sieves and activated carbon.
  • heat transfer values from the vibrating plates to the adjuvant of ⁇ max. 800-300 W / m2 ° C. High heat transfer values are thus also achieved between the fine-grained auxiliary and bulk material.
  • fine-grained auxiliary should or should not remain in the conditioned bulk material, it can be separated in a known manner and recycled or otherwise used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Seasonings (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The process and apparatus are essentially those according to Patent Application P 36 40 610.4. The aim is lastingly to influence bulk material of a broad grain size range and of the most different material properties as early as possible in the conditioning sequence. <??>This is achieved by adding to the bulk material with vaporisable components a fine-grained auxiliary material. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Konditionieren von Schüttgutmaterial insbesondere von Braunkohle, Steinkohle, Aktivkohle, Torf, Holzabfällen, Klärschlamm, Abfallschlamm, verseuchtem Erdreich, Kataly­satoren, Zeolythen und Filterkuchen mit Gehalt an verdampfbaren Bestandteilen, wobei das Material mittels Schwingförderer in Fließbewegung versetzt, in einer Er­wärmungszone und einer Trocknungszone sukzessiv behandelt wird durch indirekten Wärmetausch, nach Patentanmeldung P 36 40 610.4.The invention relates to a method and an apparatus for conditioning bulk material, in particular lignite, hard coal, activated carbon, peat, wood waste, sewage sludge, waste sludge, contaminated soil, catalysts, zeolites and filter cakes containing evaporable constituents, the material being set in motion by means of a vibratory conveyor , is treated successively in a heating zone and a drying zone by indirect heat exchange, according to patent application P 36 40 610.4.

Beim Einsatz der Vorrichtung nach Patentanmeldung P 36 40 610.4 hat sich gezeigt, daß das zu konditionierende Schüttgutmaterial nicht stets von Anfang an die besten Behandlungseigenschaften aufweist.When using the device according to patent application P 36 40 610.4, it has been shown that the bulk material to be conditioned does not always have the best treatment properties right from the start.

Der Erfindung liegt daher die Aufgabe zugrunde die Be­handlungseigenschaften von Schüttgutmaterial mit einem breiten Korngrößenspektrum und den verschiedensten Materialeigenschaften möglichst frühzeitig und nachhaltig im Konditionierungsablauf zu verändern.The invention is therefore based on the object of changing the treatment properties of bulk material with a broad grain size spectrum and a wide variety of material properties as early and sustainably as possible in the conditioning process.

Diese Aufgabe wird auf das Verfahren bezogen erfindungs­gemäß dadurch gelöst, daß dem Schüttgutmaterial ein fein­körniges Hilfsmaterial zugegeben wird.This object is achieved in relation to the method according to the invention in that a fine-grained auxiliary material is added to the bulk material.

Nach Ausbildung des Verfahrens wird dem Schüttgutmaterial Hilfsmaterial in veränderlichen Anteilen vorzugsweise 5 bis 25 Gew.% zugegeben. Die Korngröße des Schüttgutmaterials soll im Bereich < als 1 mm, vorzugs­weise von 0,02 bis 0,05 mm, liegen. Soll das Hilfsmate­rial nicht im getrockneten Schüttmaterial verbleiben, wird das Hilfsmaterial nach der letzten Abtrennung dem getrockneten Schüttgutmaterial nicht wieder zugegeben.After formation of the process, auxiliary material is preferably added to the bulk material material in variable proportions, from 5 to 25% by weight. The grain size of the bulk material should be in the range <1 mm, preferably from 0.02 to 0.05 mm. If the auxiliary material is not to remain in the dried bulk material, the auxiliary material is not added to the dried bulk material material after the last separation.

Handelt es sich bei dem zu konditionierenden Schüttgutmaterial um solches, das nicht mit der hohen Endtrocknungstemperatur gelagert werden kann, wird nach einer weiteren Ausgestaltung der Erfindung das erhitzte und mit Hilfsmaterial versetzte Schüttgutmaterial aus der Trocknungszone direkt einer Kühlzone im Schwingförderer zugeführt, wo es unter Inertgasabschluß bis auf min­destens 60 °C indirekt abgekühlt wird.If the bulk material to be conditioned is one that cannot be stored at the high final drying temperature, according to a further embodiment of the invention the heated bulk material mixed with auxiliary material is fed directly from the drying zone to a cooling zone in the vibratory conveyor, where it is sealed off with an inert gas is indirectly cooled to at least 60 ° C.

Das gefundene Verfahren läßt sich besonders vorteilhaft in einer Vorrichtung nach Patentanmeldung P 36 40 610.4 durchführen, die die weiter ausgebildeten konstruktiven Merkmale der Vorrichtungsansprüche dieser Anmeldung auf­weist.The method found can be carried out particularly advantageously in a device according to patent application P 36 40 610.4, which has the further developed structural features of the device claims of this application.

Mit Schneidblechen in gerader und/oder gebogener, pflugscharähnlicher Form in Umlaufrichtung und auf unter­schiedlichen Radien auf einer oder mehreren Schwingplatten angeordnet, läßt sich auch feuchtes Schüttgutmaterial behandeln, das auf den Schwingplatten normalerweise zur Fladenbildung neigt. Die Schneidbleche bewirken ständig eine Auftrennung der sich bildenden Fladen und in Verbindung mit Wendeleisten eine gute Untermischung des feinkörnigen Hilfsmaterials. Fig. 6 aus der Patentanmeldung P 36 40 610.4 hier Fig. 1, weist auf den Platten 6.1 und 6.2 die Schneidbleche 26 aus. In Fig. 2a und Fig. 2b ist in Seiten- und Draufsicht die Wirkungsweise der Schneidbleche 26 dargestellt. Dabei wirken die Schneidbleche gleichzeitig als Wendeleisten.Arranged with cutting plates in a straight and / or curved, ploughshare-like shape in the direction of rotation and on different radii on one or more oscillating plates can also be used to treat moist bulk material that normally tends to form pellets on the oscillating plates. The cutting plates constantly break up the flatbreads that form and, in conjunction with turning strips, ensure good mixing of the fine-grained auxiliary material. Fig. 6 from patent application P 36 40 610.4 here Fig. 1, has the cutting plates 26 on the plates 6.1 and 6.2. The operation of the cutting plates 26 is shown in side and top views in FIGS. 2a and 2b. The cutting plates also act as spiral strips.

Die mit der Erfindung erzielten Vorteile sind vielgestaltig. Wesentlich ist, daß mit der Kontakttrocknung nach Patentanmeldung P 36/40/610.4 neuerdings auch Schüttgutmaterialien konditioniert werden können, die von ihrem Fließverhalten auf Schwingförder­einrichtungen kaum oder gar nicht dazu geeignet wären.The advantages achieved with the invention are varied. It is essential that contact drying according to patent application P 36/40 / 610.4 can now also be used to condition bulk materials that would hardly or not at all be suitable for this due to their flow behavior on vibratory conveyors.

Vorteilhafterweise wird durch die Zugabe des feinkörnigen Hilfsmaterials auf das Schüttgutmaterial in der Erwärmungs- und/oder der Trocknungszone die Wärmeaufnahme aus den Schwingplatten wesentlich erhöht. Dadurch lassen sich kürzere Trocknungszeiten erzielen. Das Durchwandern des heißen von der oberen Schwingplatte abwärts fallenden feinkörnigen Hilfsmaterials durch das gröbere Schüttmate­rial auf der unteren Schwingplatte ist abhängig von den Korngrößenspektren beider Stoffe und von deren Schüttdichtedifferenzen. Mit der gezielten Zugabe von feinkörnigem speziellem Hilfsmaterial läßt sich der Kon­ditionierungsprozeß bewußt steuern.Advantageously, the addition of the fine-grained auxiliary material to the bulk material in the heating and / or drying zone significantly increases the heat absorption from the vibrating plates. This allows shorter drying times to be achieved. The passage of the hot fine-grained auxiliary material falling down from the upper vibrating plate through the coarser bulk material on the lower vibrating plate depends on the grain size spectra of both substances and on their bulk density differences. The conditioning process can be consciously controlled with the targeted addition of fine-grained special auxiliary material.

Nachfolgend werden mehrere Beispiele aufgeführt, nach denen das Konditionieren von Schüttgutmaterial ausgeführt werden kann.Several examples are given below, according to which the conditioning of bulk material can be carried out.

Einem feuchten, evtl. sogar klebenden Schüttgutmaterial, wie z.B. verseuchtem Erdreich oder feuchter Kohle wird bereits trockenes, evtl. aufgemahlenes Eigenmaterial, das auch aus einem Zyklon stammen kann, als feinkörniges Hilfsmaterial aufgegeben. Zur Verbesserung der Erdreich­struktur kann dies auch Sand sein.A damp, possibly even sticky bulk material, e.g. contaminated soil or damp coal is already dry, possibly ground own material, which can also come from a cyclone, as fine-grained auxiliary material. This can also be sand to improve the soil structure.

Soll feuchtes Heizmaterial, wie z.B. Braun- oder Stein­kohle getrocknet werden und ist eine spätere Zudosierung von Kalk oder Dolomit in den Verbrennungsprozeß vorgese­hen, so kann dieser Kalk oder Dolomit bereits als trockenes Hilfsmaterial für die Konditionierung der Roh­kohle zugeführt werden.If damp heating material, e.g. Lignite or hard coal are dried and if later addition of lime or dolomite is provided in the combustion process, this lime or dolomite can already be added as a dry auxiliary material for the conditioning of the raw coal.

Ähnliche Verfahrensmodifikationen ergeben sich, wenn z.B. einem feuchten Schüttgutmaterial, das einem späteren Pro­zeß unterworfen wird, mit Zugabe eines festen Reaktions­partners, dieser Reaktionspartner in feinkörniger Form bereits zur Trocknung des Schüttgutmaterials beigegeben wird.Similar process modifications result if, for example, a moist bulk material which is subjected to a later process with the addition of a solid reactant, these reactants in fine-grained form is already added to dry the bulk material.

Außer neutralem oder passivem Hilfsmaterial, das selbst nicht am Trocknungsprozeß teilnimmt, gibt es auch aktives Hilfsmaterial, das von seiner Struktur oder Eigenart her selbst Feuchtigkeit aufnimmt und somit die Konditionie­rung beschleunigt. Als solche Materialien sind beispiels­weise Molekularsiebe und Aktivkohle zu nennen.In addition to neutral or passive auxiliary material, which itself does not take part in the drying process, there is also active auxiliary material which, due to its structure or nature, absorbs moisture itself and thus accelerates conditioning. Examples of such materials are molecular sieves and activated carbon.

Mittels geeigneter Hilfsstoffe und gewähltem Korngrößen­spektrum lassen sich Wärmeübergangswerte von den Schwingplatten an den Hilfsstoff von α max. = 800-300 W/m² °C erzielen. Hohe Wärmeübergangswerte werden damit auch zwischen dem feinkörnigem Hilfsstoff und Schüttgutmaterial erreicht.Using suitable auxiliaries and the selected grain size spectrum, heat transfer values from the vibrating plates to the adjuvant of α max. = 800-300 W / m² ° C. High heat transfer values are thus also achieved between the fine-grained auxiliary and bulk material.

Soll oder darf der feinkörnige Hilfsstoff nicht im kondi­tionierten Schüttgutmaterial verbleiben, kann er in be­kannter Weise abgetrennt und zurückgeführt oder anderwei­tig verwertet werden.If the fine-grained auxiliary should or should not remain in the conditioned bulk material, it can be separated in a known manner and recycled or otherwise used.

Claims (7)

1. Verfahren zum Konditionieren von Schüttgutmaterial insbe­sondere von Braunkohle, Steinkohle, Aktivkohle, Torf, Holzabfällen, Klärschlamm, Abfallschlamm, verseuchtem Erdreich, Katalysatoren, Zeolythen und Filterkuchen mit Gehalt an verdampfbaren Bestandteilen, wobei das Material mittels Schwingförderer in Fließbewegung versetzt in einer Erwärmungszone und in einer Trocknungszone sukzes­siv behandelt wird durch indirekten Wärmetausch und das Schüttgutmaterial in der Erwärmungszone von Umgebungstem­peratur bis auf höchstens 170 °C erwärmt wird und die Er­wärmung abgekapselt mindestens unter dem Dampfdruck der Endtemperatur erfolgt mit Abzug der Brüden, in der fol­genden, abgekapselten Trocknungszone der Gehalt an verdampfbaren Bestandteilen des Schüttgutmaterials unter dem Dampfdruck der entstehenden Brüden reduziert wird durch weitere indirekt Wärmezufuhr und Abzug der Brüden, das Schüttgutmaterial in der Trocknungszone mehrmals in Grobgut und Feingut getrennt und das Feingut unverzüglich auf feuchteres Grobgut aufgegeben wird und eine mehrfache Umwälzung des Gutes während der Wärmezufuhr in beiden Zonen erfolgt,
nach Patentanmeldung P 36 40 610.4
dadurch gekennzeichnet, daß dem Schüttgutmaterial ein feinkörniges Hilfsmaterial zugegeben wird.1.Procedure for conditioning bulk material, in particular lignite, hard coal, activated carbon, peat, wood waste, sewage sludge, waste sludge, contaminated soil, catalysts, zeolites and filter cakes containing evaporable constituents, the material being set in motion by means of a vibratory conveyor in a heating zone and in a drying zone is treated successively by indirect heat exchange and the bulk material in the heating zone is heated from ambient temperature to a maximum of 170 ° C and the heating is encapsulated at least below the vapor pressure of the final temperature with the vapor removed, in the following, encapsulated drying zone the content of evaporable Components of the bulk material under the vapor pressure of the resulting vapors is reduced by further indirect heat supply and extraction of the vapors, the bulk material is separated several times into coarse and fine goods in the drying zone and the fine goods immediately is placed on moist coarse material and the material is circulated several times during the heat supply in both zones,
according to patent application P 36 40 610.4
characterized in that a fine-grained auxiliary material is added to the bulk material. 2. Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß der Anteil des Hilfsmaterials in veränderlichen Anteilen, vorzugsweise 5-25 Gew.%, zugegeben wird.2. The method according to claim 1, characterized in that the proportion of the auxiliary material in variable proportions, preferably 5-25 wt.%, Is added. 3. Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, daß das Hilfsmaterial eine Korngröße von < als 1 mm Durchmesser, vorzugsweise im Bereich von 0,02 bis 0,05 mm hat.3. The method according to claim 1 and 2, characterized in that the auxiliary material has a grain size of <than 1 mm in diameter, preferably in the range of 0.02 to 0.05 mm. 4. Verfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß der wesentliche Anteil des Hilfsmaterials von dem ge­trockneten Grobgut abgetrennt wird.4. The method according to claim 1 to 3, characterized in that the essential portion of the auxiliary material is separated from the dried coarse material. 5. Verfahren nach Anspruch 1-4 dadurch gekennzeichnet, daß das heiße, getrocknete Schüttgutmaterial in einer gekap­selten Zone unter Zusatz von feinkörnigem Hilfsmaterial gekühlt wird.5. The method according to claim 1-4 characterized in that the hot, dried bulk material is cooled in an encapsulated zone with the addition of fine-grained auxiliary material. 6. Vorrichtung zur Durchführung des Verfahrens nach den An­sprüchen 1-5 und nach Patentanmeldung P 36 40 610.4 mit Wendeleisten (20) auf Platten der Erwärmungs- und der Trocknungszone dadurch gekennzeichnet, daß die Wendelei­sten trapezförmig gezackt sind.6. Device for performing the method according to claims 1-5 and according to patent application P 36 40 610.4 with spiral strips (20) on plates of the heating and drying zone, characterized in that the spiral strips are serrated trapezoidal. 7. Vorrichtung zur Durchführung des Verfahrens nach den An­sprüchen 1-5 und nach Patentanmeldung P 36 40 610.4 da­durch gekennzeichnet, daß auf einer oder mehreren Schwingplatten eine Mehrzahl von Schneidblechen (26) in gerader und/oder gebogener, pflugscharähnlicher Form in Umlaufrichtung und auf unterschiedlichen Radien angeord­net sind.7. Device for performing the method according to claims 1-5 and according to patent application P 36 40 610.4, characterized in that a plurality of cutting plates (26) in a straight and / or curved, ploughshare-like shape in the circumferential direction and on different on one or more oscillating plates Radii are arranged.
EP19880115775 1987-10-23 1988-09-24 Process and apparatus for conditioning bulk material Withdrawn EP0312803A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873735954 DE3735954A1 (en) 1986-11-27 1987-10-23 Method and apparatus for conditioning bulk material
DE3735954 1987-10-23

Publications (2)

Publication Number Publication Date
EP0312803A2 true EP0312803A2 (en) 1989-04-26
EP0312803A3 EP0312803A3 (en) 1990-10-24

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EP19880115775 Withdrawn EP0312803A3 (en) 1987-10-23 1988-09-24 Process and apparatus for conditioning bulk material

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US (1) US4970806A (en)
EP (1) EP0312803A3 (en)
JP (1) JPH01224040A (en)
AU (1) AU2356088A (en)
FI (1) FI884805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638779A1 (en) * 1993-08-12 1995-02-15 Chemische Werke Kluthe GmbH Process for drying sticky materials

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US6457255B1 (en) 2000-06-19 2002-10-01 Allan M. Carlyle Ring to ring gas processor/dryer
US7987614B2 (en) * 2004-04-12 2011-08-02 Erickson Robert W Restraining device for reducing warp in lumber during drying
NO324639B1 (en) * 2006-02-28 2007-11-26 Environmental Waste Technology Method and apparatus for drying cleanable pulp
WO2008153404A1 (en) * 2007-06-15 2008-12-18 Environmental Waste Technology As Method and device for drying of flowable substances
CN107860208B (en) * 2017-11-08 2019-12-13 盐城可理斯机械制造有限公司 Even drying device of corn layering
CN116558239B (en) * 2022-09-19 2023-11-24 江苏格兰特干燥浓缩设备有限公司 Using method of energy-saving tube bundle dryer

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DE947870C (en) * 1949-11-05 1956-08-23 Demag Ag Process for drying, heating or distilling lumpy, dusty or muddy materials
US3343812A (en) * 1966-10-17 1967-09-26 Arthur K Moulton Process and apparatus for conditioning materials
EP0030947B1 (en) * 1979-06-25 1983-03-02 Waagner-Biro Aktiengesellschaft Plant for drying or cooling bulk materials such as lime or coal
EP0114937A2 (en) * 1983-01-26 1984-08-08 Carl Schenck Ag Vibrating machine for treating products, especially vibrating cooler or vibrating drier
DE2659335C2 (en) * 1976-12-29 1985-10-24 Bergwerksverband Gmbh Operation of a coal heating plant

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US3742614A (en) * 1970-10-02 1973-07-03 Leybold Heraeus Verwaltung Thermal treatment of powdered or granular material
US3710453A (en) * 1971-02-19 1973-01-16 Burroughs & Son J P Flake and pellet cooler
US4392301A (en) * 1981-06-01 1983-07-12 Western Electric Company, Inc. Device for inserting and removing circuit modules with multiple leads
DE3640610A1 (en) * 1986-11-27 1988-06-09 Uhde Gmbh METHOD AND DEVICE FOR CONDITIONING WATER-CONTAINING SHEET MATERIAL

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947870C (en) * 1949-11-05 1956-08-23 Demag Ag Process for drying, heating or distilling lumpy, dusty or muddy materials
US3343812A (en) * 1966-10-17 1967-09-26 Arthur K Moulton Process and apparatus for conditioning materials
DE2659335C2 (en) * 1976-12-29 1985-10-24 Bergwerksverband Gmbh Operation of a coal heating plant
EP0030947B1 (en) * 1979-06-25 1983-03-02 Waagner-Biro Aktiengesellschaft Plant for drying or cooling bulk materials such as lime or coal
EP0114937A2 (en) * 1983-01-26 1984-08-08 Carl Schenck Ag Vibrating machine for treating products, especially vibrating cooler or vibrating drier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638779A1 (en) * 1993-08-12 1995-02-15 Chemische Werke Kluthe GmbH Process for drying sticky materials

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FI884805A0 (en) 1988-10-18
US4970806A (en) 1990-11-20
AU2356088A (en) 1989-04-27
EP0312803A3 (en) 1990-10-24
FI884805A (en) 1989-04-24
JPH01224040A (en) 1989-09-07

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