WO2012159736A1 - Réacteur de séchage - Google Patents

Réacteur de séchage Download PDF

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Publication number
WO2012159736A1
WO2012159736A1 PCT/EP2012/002170 EP2012002170W WO2012159736A1 WO 2012159736 A1 WO2012159736 A1 WO 2012159736A1 EP 2012002170 W EP2012002170 W EP 2012002170W WO 2012159736 A1 WO2012159736 A1 WO 2012159736A1
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WO
WIPO (PCT)
Prior art keywords
drying
fluidized bed
zone
dried
drying reactor
Prior art date
Application number
PCT/EP2012/002170
Other languages
German (de)
English (en)
Inventor
Norbert Topf
Lukasz Gierecki
Wolfgang Hinz
Dieter Hahn
Georgios RAOUZEOS
Original Assignee
Buss-Sms-Canzler Gmbh
Ver Verfahrensingenieure 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 Buss-Sms-Canzler Gmbh, Ver Verfahrensingenieure Gmbh filed Critical Buss-Sms-Canzler Gmbh
Publication of WO2012159736A1 publication Critical patent/WO2012159736A1/fr

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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
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Definitions

  • the present invention relates to a drying reactor according to the preamble of claim 1, a method for drying material in a mechanically generated fluidized bed and the use of the drying reactor for drying wet material, in particular sludge or pastes, or for the treatment of distillation residues.
  • the term also encompasses pulpy raw materials which can have massive hardening and incrustations during the drying process, saline solutions,
  • the methods and devices for drying wet material can be divided into three groups, namely in contact drying method or
  • Convective dryers and radiation drying methods or radiation dryers Within the main group of contact dryers, a number of subgroups can be defined, e.g. horizontal
  • CONFIRMATION COPY or vertically arranged contact dryer with moving material, or fluidized bed dryer.
  • a number of subgroups can be defined, e.g. pneumatic fluidized bed dryers or combined mechanical / pneumatic fluidized bed dryers.
  • the wet material In contact dryers with moving material, the wet material is mechanically set in motion and brought into contact with a heating surface.
  • the wet material can be present, for example, in the form of a pumpable liquid, suspension or paste. It is also conceivable that the wet material in the form of a pulpy raw material, a moist (fine or coarse-grained) bulk material, such as cereals, or a wet filter cake, such as municipal sludge, is present.
  • the material is heated and the volatile components (often also referred to as "moisture") expelled therein are expelled by transferring them into the vapor or gas phase in particular, from the fact that the material to be dried tends to form massive hardening and incrustation, which make efficient drying of the material difficult.
  • volatile components often also referred to as "moisture”
  • the material to be dried in the form of a water-moist fine or coarse-grained bulk material, a water-moist
  • the water-moist material supplied to the fluidized-bed dryer is brought into the fluidized state exclusively by contact with the hot gas stream and dried at the same time.
  • Fluidized bed drying known the principle of backmixing. According to this principle, dry solid particles are heated from the material to be dried and introduced the material to be dried in finely divided form to the solid particles submitted. The wet solid particles strike the dry solid particles and stick to them. If the dry solid particles are present in sufficient quantity, the wet solid particles are encapsulated by the dry solid particles. This prevents the formation of sticky phases and ensures that the wet bulk material has direct contact with the contact surface of the convective fluidized-bed dryer, where it sticks and forms crusts.
  • drying reactors were developed under the term "Combi Fluidization” technology (CFT), in which the fluidized bed is not convective, but exclusively is generated mechanically.
  • CFT Combi Fluidization
  • the solid particles are whirled about by moving rotor blades and placed in a (quasi) fluidized bed state, which establishes a (quasi) equilibrium between upwardly transported solid particles and sinking solid particles.
  • the drying reactors of conventional convective fluidized bed dryers the drying of the wet material takes place exclusively by contact with other solid particles or the contact surface of the reactor.
  • DE 28 31 890 A1 discloses a method and an apparatus for the continuous drying of bulk material, in which the bulk material is whirled up mechanically in a closed space by means of plow-blade-like mixing tools and a gas is blown through the bulk material transversely to the whirling up direction.
  • the injected gas thus also serves for the convective transport of the bulk material in the direction of the outlet opening, with a conveying component being exerted on the bulk material as it swirls up, which counteracts the delivery component of the gas.
  • An annular baffle plate which is arranged in front of the outlet opening for the dried mix, prevents the mix from the flowing gas stream can be blown directly into the outlet.
  • the above method of DE 28 31 890 AI can also be used only for fine-grained bulk materials, which can be distributed as finely and loosely in the closed space of the device. Drying pulpy bulk materials, such as yeast derivatives or vegetable extracts, would only be extremely high Backmixing of dried material possible and thus associated with a reduced efficiency of the process.
  • a process for granulating sludges is described, for example, in EP 0 786 288 A1, in which the sludges are continuously mixed in a first process stage and continuously granulated in a subsequent second process stage.
  • a disadvantage of two-stage processes is that they are less economical in comparison with single-stage processes which at the same time permit drying and granulation of wet goods.
  • the granulation can be accomplished only by the admixture of liquids, binders and dusts.
  • the object of the present invention is therefore to provide a drying reactor, in particular a CFT
  • Drying reactor which makes it possible to increase the efficiency, capacity and / or product quality of the drying of a variety of possible moist starting materials, especially liquid or viscous residues.
  • the invention is intended, in particular, to ensure efficient drying and granulation of moist starting materials in only one process stage, so that a granulated, free-flowing solid can be obtained without recycling the dried starting material back to the inlet zone of the moist starting material and without the addition of auxiliaries.
  • novel drying reactor in particular also starting materials such as tar, lacquer and Paint sludges, distillation residues from the production of chemical, pharmaceutical and biotechnological products, pulpy raw materials from the food industry such as yeast and yeast derivatives, pumpable suspensions or pastes - such as alumina or leachate, fine or coarse-grained moist bulk material - such as grain , or moist filter cake - such as municipal, petrochemical and industrial sludge, can be dried and granulated.
  • the object is achieved by a drying reactor according to claim 1.
  • Preferred embodiments are the subject of the dependent claims.
  • the inventive drying reactor has a housing enclosing an interior with a heatable inner wall, a material supply for introducing the material to be dried in a first end of the housing, anadogutaustrag in a first end axially opposite the second end portion of the housing and a vapor outlet.
  • the interior comprises a drying space comprising a fluidized bed zone.
  • a rotatable shaft rotatably driven about its axis is also arranged, which is intended to swirl the material to be dried by means arranged on the rotor shaft rotor blades (or “rotor paddles") in the fluidized bed zone and to promote from the material supply towardsdovgutaustrag out.
  • the drying reactor is characterized in that
  • the drying room has a calming zone; - The calming zone between the fluidized bed zone and thengutaustrag is arranged;
  • the calming zone is separated by a partition wall of the fluidized bed zone; and - the partition wall between the fluidized bed zone and the settling zone is designed such that only a portion of the material from the fluidized bed zone to the settling zone is transmitted. Overall, drying and granulation of moist starting materials can thereby be achieved simultaneously in only one process stage.
  • the drying reactor according to the invention further allows the degree of filling in the interior of the drying reactor to be controlled and the residence time of the moist feedstock fed in the fluidized bed zone of the drying reactor to be influenced as desired.
  • the controlled material discharge can be ensured by the drying reactor according to the invention, and ultimately the increase in the efficiency and the capacity of the drying reactor and the increase in product quality can be achieved.
  • moisture as used in connection with the present invention encompasses both water and other solvents and other volatile components.
  • the rotation of the rotor shaft causes it to rotate with it arranged rotor blades in the fluidized bed zone of the drying space generates a fluidized bed or a quasi-fluidized bed.
  • the drying reactor is in the form of a "CFT" drying reactor
  • Dry or partially dried solid particles of the fluidized bed come into contact with the heated inner wall of the housing and are thus heated.
  • finely divided fresh wet material which is present for example in the form of liquid or viscous residues, pulpy raw materials, pumpable suspensions or pastes, fine or coarse wet bulk materials or moist filter cake comes in contact with the dry or partially dried solid particles of the fluidized bed.
  • Solid particles stick to the wet parts of the finely divided fresh wet material. Since many dry solid particles can quickly accumulate on the wet parts of the finely distributed fresh wet material the latter enveloped by the dry solid particles of the fluidized bed. This prevents sticky phases from forming and allowing the fresh wet material to come into direct contact with the inner wall, sticking there and forming crusts.
  • heat is supplied to the parts of the finely divided fresh wet material to be dried by attaching the dry and hot solid particles so that vaporization of the volatile or liquid fractions can quickly take place.
  • the heated inner wall of the housing and / or the heated solid particles of the fluidized bed and by heat transfer of the gases present in the interior of the parts to be dried finely divided fresh wet material continues to heat, resulting in further evaporation of the volatile or liquid fractions in leads to be dried parts of the finely divided fresh wet material.
  • the evaporation is also favored by the large freely accessible surface and by the good mixing of the solid particles in the fluidized bed.
  • the drying reactor can be run under reduced pressure or vacuum. This makes it possible to use less heat energy for the drying, as is the case for example in a conventional fluidized bed reactor, according to such as DE 28 31 890 AI.
  • vapors which can be derived via the vapor outlet from the drying room and from the housing.
  • vapors encompasses both water vapor, solvent vapors and other volatile components under the prevailing operating conditions in the drying reactor.
  • the number and arrangement of the rotor blades along the rotor shaft varies depending on the application of the drying reactor. Usually a regular arrangement of the rotor blades is preferred. This means that the individual rotor blades are usually spaced apart uniformly along the rotor shaft and at the same time regularly distributed in the circumferential direction. The regular arrangement achieves a homogeneous fluidized bed within the fluidized bed zone.
  • the rotor blades with different angles of attack - and thus different throwing or transporting directions - be provided to increase the intensity of the mixing.
  • rotor blades can alternate with oppositely directed throwing or transporting directions. This can be specifically influenced on the backmixing within the drying reactor and the average residence time of the solid particles can be extended or evened out.
  • Drying reactor is limited in the conveying direction through one or more partitions.
  • the calming zone In the conveying direction downstream of the at least one partition wall, the calming zone is arranged.
  • This at least one partition is partially permeable, that is - as mentioned above - allows the flow of only a portion of the moving to the partition solid particles in the calming zone, while the other part against the partition bounces and is thus prevented from leaving the fluidized bed zone.
  • the dividing wall protrudes from above into the drying space and, viewed in the conveying direction, covers only part of the cross-sectional area of the interior of the reactor; too high a congestion through the partition is thus prevented.
  • a partially permeable partition wall is provided which covers the entire cross section of the drying space.
  • the partition is usually circular or circular segment-shaped.
  • the partition comprises Ablenklamellen (or "baffles"), which extend in a direction obliquely to the conveying direction and form slit-like openings through which the solid particles are passed obliquely down during operation of the drying reactor.
  • Ablenklamellen or "baffles”
  • the solid particles subsequently have a lower average velocity than in the fluidized bed zone; Overall, a defined is thus formed in the calming zone
  • the mean length of stay can be defined or calculated as follows:
  • V the installed volume of the drying reactor in the area of the fluidized bed and settling zone; ⁇ the average degree of filling in the area of the fluidized bed and settling zone; ⁇ the mean bulk density of the solid particles in the r
  • the deflection blades are particularly preferably arranged "optically dense", that is to say that in the conveying direction each individual deflection blade overlaps with the respectively adjacent deflection blade Prevents that solid particles flying parallel to the conveying axis can enter the calming zone without being distracted from their trajectory.
  • the controlled discharge of material from the calming zone can be accomplished by means of a weir.
  • a weir In this case, only the overflow reaches a discharge area following the calming zone and finally into the material discharge.
  • the passage of the weir can be configured approximately in the form of a gap.
  • a comparably controlled material discharge which at the same time enables both the control of the average degree of filling and the control of the mean residence time, can not be achieved by conventional fluidized-bed dryers which are equipped only with a weir plate.
  • rotor blades are preferably arranged on the rotor shaft, which rotor blades are not arranged
  • the discharge area is a
  • a level sensor is provided in the calming zone, by means of which the fill level in the calming zone can be determined.
  • a discharge screw is usually also provided, which is actuated when exceeding the predetermined maximum level to actively discharge the material to be dried or dry material from the calming zone.
  • the delivery rate of thengutaustrags, in particular the discharge screw is preferably controlled by the level sensor. Characterized in that in this embodiment, the dried material is taken directly from the calming zone, the emptying of the dryer can be simplified about product changes. In this embodiment, a weir plate is not required.
  • the rotor shaft has no rotor blades in the region of the settling zone.
  • the solid particles in the settling zone are not fluidized as in the fluidized bed zone and are gradually decelerated.
  • a stowage effect can be achieved, wherein solid particles collide at high speed from the fluidized bed zone after entering the settling zone with solid particles located therein and are thus additionally braked.
  • the average residence time of the solid particles in the drying room is further extended and ultimately achieved a better drying.
  • the solid particles in the settling zone are actively mixed. Mixing prevents the settling or deposition of solid particles n in the calming zone. The thorough mixing and loosening of the solid particles in the calming zone further enables efficient drying. Accordingly, the inner wall is preferably not only in the area of the fluidized bed zone, but in the entire region of the drying space, ie also in the region of the calming zone heated, whereby a recondensation of vapors can be prevented.
  • a corresponding mixing in the calming zone can be achieved, for example, by an introduced gas stream.
  • a possible mixing in the calming zone is achieved by at least one rotor blade arranged on the rotor shaft, wherein this can be designed to be the same or similar or different in comparison to the rotor blades in the fluidized bed zone.
  • the at least one rotor blade extends radially less far away from the rotor shaft in the region of the settling zone than the rotor blades in the fluidized bed zone.
  • the housing has a Brüdendom, which is arranged between the drying chamber and vapor outlet.
  • the Karlindom the solid particles of the fluidized bed are separated from the vapors.
  • the thus cleaned vapors can additionally be cleaned with vapor filters before they are removed via the vapor outlet from the housing.
  • the Brüdendom and / or optionally the vapor filter are preferably heatable. If there is a vapor filter, it will be cleaned from time to time. This cleaning is usually done by means of a pressure surge.
  • the rotor shaft can be heated, whereby additional heat energy is introduced into the system, the heating of the solid particles to be dried is accelerated and, in particular, crust formation is minimized or prevented.
  • the inventive drying reactor is preferably constructed so that it can be operated both at overpressure, atmospheric pressure and under reduced pressure, in particular vacuum.
  • a process under reduced pressure or vacuum allows to spend less heat energy for the drying, as is the case for example in a conventional fluidized bed reactor.
  • the present invention relates to a process for drying material or for separating recyclable materials by means of a fluidized bed mechanically produced in a drying reactor as previously described.
  • a dry solid particle of the material to be dried comprehensive fluidized bed is generated.
  • the material to be dried is fed via the material supply in the drying reactor to the fluidized bed, whereupon the material to be dried with dry
  • Solid particles of the fluidized bed comes into contact. This achieves a distribution of the liquid fraction in the wet parts of the material to be dried.
  • the material to be dried is introduced so that it is finely distributed, especially in small droplets or small particles, present in the drying room.
  • the process according to the invention can be operated both batchwise and continuously.
  • the dry solid particles can be introduced into the drying chamber, for example through the same material feed as used for the material to be dried.
  • a separate, provided for the dry solid particles material supply may be provided on the dry reactor.
  • continuous operation dry solid particles are already present in the drying room together with partially dried solid particles.
  • the process is preferably carried out with fill levels between 50 and 90%, particularly preferably 80%. With these fill levels it is ensured that many dry or partially dried ones quickly
  • a first portion of the fluidized bed is retained by the dividing wall in the fluidized bed zone.
  • a second portion usually passes via a deflection from the conveying direction into the calming zone, in which the solid particles are reduced
  • Average speed This forms an at least approximately defined material boundary layer, which allows the product by means of a weir or a level sensor controlled from the
  • the dried solid particles in the discharge area are present as a bed and are discharged via the dry material discharge from the drying reactor.
  • the accumulation of dry solid particles on wet or dried material produces solid particles of increased diameter. This tendency for the volume of the solid particles to increase over time, especially in a continuously operated process, is counteracted by the shearing force caused by the rotation of the rotor blades or any possible comminution, as a result of which the solid particles are comminuted.
  • the process according to the invention is preferably carried out under reduced pressure, in particular vacuum, which makes it possible to lower the process temperature. As a result, firstly, the energy consumption can be reduced. Secondly, this can slow down any undesired decomposition reactions during the process, which is advantageous in particular in the separation of usable materials.
  • the present invention relates to the use of the inventive dry reactor for drying wet material, in particular sludge or pastes, and for the treatment of liquid or viscous
  • Distillation residues in particular for the recovery of products remaining in distillation residues.
  • Typical applications include the drying of paint sludge, paint sludge, tar sludge and salt-containing and crust-forming products.
  • FIG. 1 shows schematically a longitudinal section through a
  • Fig. 2 shows schematically a longitudinal section through a further embodiment of the inventive drying reactor.
  • Drying reactor 2 a an inner space 4 enclosing, substantially circular cylindrical housing 6 with a by means of heating 8 heated inner wall 10.
  • leading material feeds 12, 12 ', 12 are provided by the inner wall 10 in the form of inlet ports 14, 14', 14" for introducing the material to be dried into the interior 10.
  • These inlet ports 14, 14 ', 14''means such as atomizing can be assigned to deliver the material to be dried in a finely divided form in the interior 10 of the drying reactor 2.
  • alutegutaustrag 16 is provided for discharging the dried material.
  • rotatable by means of a motor 18 rotor shaft 20 is arranged. This is rotatably mounted in the end walls 22a, 22b of the housing 6.
  • the bearing 26a and 26b are each disposed on the outside of the end walls 22a, 22b of the housing 6 and has a sealing the rotor shaft 20 sealing 24 approximately in the form of an O-ring.
  • the rotor shaft 20 has radially spaced rotor blades 28a, 28b, 28c, 28d, 28e, 28f, 28g, 28h. These produce in a first end region 6a of the housing 6 facing drying chamber 30 on the one hand a (quasi) fluidized bed of solid particles and promote these on the other hand from the material supply 12 in the direction ofambagutaustrag 16 out.
  • the partition 34 extends in a plane substantially perpendicular to the conveying direction and protrudes from above into the interior 10. It is formed in a circular segment and thus covers only part of the reactor cross-section.
  • the dividing wall is made partially permeable, that is, only part of the material is allowed to pass from the fluidized bed zone 32 to the settling zone 36.
  • the partition wall 34 for this Ablenklamellen 35 which extend parallel to each other and with respect to the conveying direction in obliquely downwardly extending planes and "optically dense" are arranged.
  • the calming zone 36 is separated in the embodiment shown in FIG. 1 by a weir 38 comprising a material passage 37 from a discharge region 40 facing the second end region 6b, from which the dried material is discharged from the interior 10 via the dry product discharge 16.
  • a brushless passage 50 is provided, to which a broth-dome 48 comprising a vapor filter 46 is flanged. From this, the vapors are discharged via a vapor outlet 44.
  • rotor blades 28a, 28b, 28c, 28d, 28e, 28f, 28g are in the fluidized bed zone 32 legally spaced from each other.
  • a rotor blade 28h is also arranged in the embodiment shown, which extends radially less far from the rotor shaft 20 (and thus further from the inner wall 10) than the rotor blades in the fluidized bed zone 32 and for loosening the solid particles in the Calming zone 36 is used.
  • a (quasi) irbel bed is generated by the rotation of the rotor shaft 20 or by means of the rotor blades 28a, 28b, 28c, 28d, 28e, 28f, 28g in the fluidized bed zone, which is heated by the contact with the heated inner wall.
  • the material to be dried is introduced into the drying space 30 via the material feeds 12, 12 ', 12 ", whereupon the material to be dried in the fluidized bed zone 32 comes into contact with the heated solid particles of the fluidized bed and combines with them. This results in a first increase in temperature of the liquid portion of the material to be dried.
  • the combined solid particles are further heated by the contact with the heated inner wall 10 of the housing 6, wherein low-boiling compounds evaporate with the formation of vapors and the combined solid particles are dried.
  • the vapors are sent via the Brüden collectlass 50 in the Brüdendom . Derived 48 where any entrained solid particles separated at the vapor filter 46 and returned to the interior 10 of the drying reactor 2 become.
  • the purified vapors leave the Brüdendom 48 via the exhaust outlet 44th
  • a first portion of the combined solid particles is retained by the dividing wall 34 in the fluidized bed zone 32.
  • a second portion is conveyed via the slot-like openings of the dividing wall 34 formed by the deflection blades 35 into the settling zone 36, in which the solid particles have an average speed reduced relative to the fluidized bed zone and a defined material boundary layer is formed.
  • the overflow of the solid particles then reaches the discharge area 40.
  • the solid particles present in the discharge area 40 as bulk are finally removed via the dry product discharge 16 from the interior 10 of the drying reactor 2.
  • Level sensor 42 instead of a weir accomplished.
  • the calming zone 36 thus extends from the dividing wall 34 to the end wall 22b.
  • the level sensor 42 is arranged in the region of the calming zone 36 and coupled to arapgutaustrag in the form of a discharge screw 17 which is actuated when exceeding a predetermined maximum level to actively discharge the material to be dried or dry material from the calming zone 36.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne un réacteur de séchage comprenant un carter (6) renfermant un espace intérieur (4) et muni d'une paroi intérieure chauffante (10), une amenée de matériau (12, 12', 12'') pour l'introduction du matériau à sécher dans une première zone d'extrémité (6a) du logement (6), une évacuation pour le produit sec (16) dans une deuxième zone d'extrémité (6b) du carter (6) axialement opposée à la première zone d'extrémité (6a) et une sortie pour les vapeurs chaudes (44), l'espace intérieur (4) comprenant un espace de séchage (30) comportant une zone de lit fluidisé (32). L'espace intérieur (4) présente un arbre de rotor (20) pouvant être entraîné en rotation autour de son axe et destiné à soulever en tourbillon le matériau à sécher au moyen de pales de rotor (28a, 28b, 28c, 28d, 28e, 28f, 28g) agencées sur l'arbre de rotor (20) dans la zone de lit fluidisé (32) et pour le transporter depuis l'amenée de matériau (12, 12', 12'') en direction de l'évacuation de produit sec (16). L'invention est caractérisée en ce que l'espace de séchage (30) comporte une zone de stabilisation (36) agencée entre la zone de lit fluidisé (32) et l'évacuation de produit sec (16) et délimitée par rapport à la zone de lit fluidisé (32) par une paroi de séparation (34), la paroi de séparation (34) étant configurée de telle manière que seule une partie du matériau passe de la zone de lit fluidisé (32) à la zone de stabilisation (36).
PCT/EP2012/002170 2011-05-23 2012-05-22 Réacteur de séchage WO2012159736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11004226.4 2011-05-23
EP11004226A EP2527771A1 (fr) 2011-05-23 2011-05-23 Réacteur de séchage

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Publication Number Publication Date
WO2012159736A1 true WO2012159736A1 (fr) 2012-11-29

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141524A1 (fr) 2015-09-08 2017-03-15 Basf Se Sechage de polysulfures dans un lit fluidise fabrique mecaniquement
CN108516661A (zh) * 2018-06-19 2018-09-11 临沂三丁能源有限公司 一种圆管式干化机
WO2020201277A1 (fr) 2019-04-02 2020-10-08 Covestro Intellectual Property Gmbh & Co. Kg Dispositif de séchage et son utilisation ainsi que procédé de fabrication d'un isocyanate utilisant le dispositif de séchage

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Publication number Priority date Publication date Assignee Title
CH706388A2 (de) * 2012-04-28 2013-10-31 Michael Geisinger Verfahren zur Vorrichtung zur Eindickung von flüssigen Lösungen, zur Trocknung des eingedampften Konzentrates, wie auch feuchter Schüttgüter.
ES2648974T3 (es) 2013-04-26 2018-01-09 Buss-Sms-Canzler Gmbh Sistema compuesto de una tapa de extremo para un reactor/mezclador y de un bloque de conexión de tornillo sin fin de extracción
FR3038375B1 (fr) * 2015-07-02 2019-04-12 Groupe H. Labbe Installation thermique de sechage de matiere pateuse
CN113045169B (zh) * 2021-04-06 2022-06-07 河南城建学院 基于太阳能热利用的模块化污泥干燥系统

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US1489702A (en) * 1921-12-03 1924-04-08 Patrick J Hare Steam-jacketed conveyer
DE2831890A1 (de) 1978-07-20 1980-01-31 Loedige Maschbau Gmbh Geb Verfahren und vorrichtung zum kontinuierlichen trocknen von schuettgut
US4818297A (en) 1981-10-29 1989-04-04 Gebruder Lodige Maschinenbau-Gesellschaft Process for removing solvents from bulk material
EP0786288A1 (fr) 1996-01-24 1997-07-30 F. Zettl GmbH & Co. Procédé de granulation de boues

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489702A (en) * 1921-12-03 1924-04-08 Patrick J Hare Steam-jacketed conveyer
DE2831890A1 (de) 1978-07-20 1980-01-31 Loedige Maschbau Gmbh Geb Verfahren und vorrichtung zum kontinuierlichen trocknen von schuettgut
US4818297A (en) 1981-10-29 1989-04-04 Gebruder Lodige Maschinenbau-Gesellschaft Process for removing solvents from bulk material
EP0786288A1 (fr) 1996-01-24 1997-07-30 F. Zettl GmbH & Co. Procédé de granulation de boues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141524A1 (fr) 2015-09-08 2017-03-15 Basf Se Sechage de polysulfures dans un lit fluidise fabrique mecaniquement
CN108516661A (zh) * 2018-06-19 2018-09-11 临沂三丁能源有限公司 一种圆管式干化机
WO2020201277A1 (fr) 2019-04-02 2020-10-08 Covestro Intellectual Property Gmbh & Co. Kg Dispositif de séchage et son utilisation ainsi que procédé de fabrication d'un isocyanate utilisant le dispositif de séchage

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