EP1714694B2 - Mélangeur / réacteur gros volume - Google Patents

Mélangeur / réacteur gros volume Download PDF

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Publication number
EP1714694B2
EP1714694B2 EP05008591A EP05008591A EP1714694B2 EP 1714694 B2 EP1714694 B2 EP 1714694B2 EP 05008591 A EP05008591 A EP 05008591A EP 05008591 A EP05008591 A EP 05008591A EP 1714694 B2 EP1714694 B2 EP 1714694B2
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EP
European Patent Office
Prior art keywords
segment
rotor
kneading
longitudinal section
axial direction
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.)
Not-in-force
Application number
EP05008591A
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German (de)
English (en)
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EP1714694A1 (fr
EP1714694B1 (fr
Inventor
Pascal Loew
Andreas Lennert
Rainer Naef
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Buss SMS Canzler GmbH
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Buss SMS Canzler GmbH
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Application filed by Buss SMS Canzler GmbH filed Critical Buss SMS Canzler GmbH
Priority to DE502005006692T priority Critical patent/DE502005006692D1/de
Priority to AT05008591T priority patent/ATE423614T1/de
Priority to ES05008591T priority patent/ES2321412T3/es
Priority to EP05008591A priority patent/EP1714694B2/fr
Publication of EP1714694A1 publication Critical patent/EP1714694A1/fr
Publication of EP1714694B1 publication Critical patent/EP1714694B1/fr
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Publication of EP1714694B2 publication Critical patent/EP1714694B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
    • B01F27/702—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with intermeshing paddles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners

Definitions

  • the invention relates to a large-volume reactor according to the preamble of claim 1 and a method according to the preamble of claim 15.
  • GVR Large volume reactors
  • thermal treatment is meant in particular the evaporation, degassing and drying of a material system.
  • physical treatment includes matter transformation, sublimation, resublimation, crystallization or mixing of a substance system, while the term chemical treatment generally encompasses reactions.
  • Such large-volume reactors usually have an interior, also called mixing space, with a volume of about 3 to 50,000 liters and in most cases a normal volume of about 1,000 to 20,000 liters and ensure a good mix over a wide range of viscosities - And Knetrial and thus a rapid renewal of the free surface.
  • a reactor of the generic type is known.
  • Two oppositely driven, parallel-axis rotors are arranged in a mixing chamber enclosed by a housing.
  • Each rotor comprises a rotor shaft and a plurality of segment discs. From each rotor shaft are several segment discs radially from.
  • the segment discs are associated with segment planes which are at right angles to the rotor shafts with distances in the axial direction from each other.
  • a gap is located between the shell wall and segment discs. In each segment plane, the segment discs of one rotor interact with the segment discs of the other rotor in a gear-wheel-like manner in mutual engagement.
  • Each segmental disc of a rotor is arranged offset to the - in the axial direction - adjacent segment disc in a rotational direction, or circumferential direction and connected by means of a kneading bar.
  • the kneading bars serve to cooperate with the shell wall of the housing. In a fixed direction of rotation, the interaction is a cleaning of a layer of reaction material, which adheres to the shell wall. The kneading bars further clean off the other rotor as well.
  • the kneading bars are arranged parallel to the respective rotor axis, as well as seen in the direction of rotation, at the leading and trailing ends of the segment discs for a complete cleaning of the jacket wall.
  • the kneading bars are spaced from one another in the axial direction by gaps in order in each case to allow a corresponding disk segment of the other rotor to intervene and to clean off its flanks.
  • Two axially adjacent segment discs define a chamber in the axial direction.
  • a lateral boundary of the chambers in the leading and trailing direction takes place only partially - by two axially spaced and offset in the circumferential direction segment discs, such that the segment discs lie on spiral lines whose spiral axes are coaxial with the respective rotor axes.
  • each chamber is offset in the axial direction by a pitch in the circumferential direction and / or trailing chamber about the pitch of the spiral-shaped line.
  • the chambers are arranged offset in such a way that an overlap with the circumferentially leading and / or trailing chamber is asymmetrical. This asymmetry leads during operation to an asymmetric conveying behavior, as in Fig. 1 is described.
  • a mixing kneader known in a housing two axially parallel waves are arranged. On the shafts are in the direction of rotation and in the axial direction of successive in the direction of the shaft or obliquely extending Knetbarren on a support element. The tracks of the kneading bars on the two shafts overlap at least partially. When turning the kneading bars on one shaft between the support elements on the other shaft.
  • the object is achieved with a novel reactor according to claim 1. Further, this object is achieved by a method according to claim 15.
  • the disk segments and the kneading bars are arranged as follows both in a longitudinal section and in a further longitudinal section, a conveying effect of the mixed material and / or reaction material can be achieved.
  • the disk segments and the kneading bars are arranged on the respective rotor shafts such that the conveying movement points in a longitudinal section in the axial direction in the opposite direction to the conveying movement of a further longitudinal section.
  • Such zones of intensive mixing also called Kompaktierzonen, offer itself as places for the supply of another component or one or more additives or another, possibly already premixed further reaction material downright, especially if a possible rapid and intimate mixture and / or reaction with which is already to be achieved in the Kompaktierzone reaction.
  • the arrangement of the outlet in a zone with high mixing intensity can have the advantage that discharge of the reaction product processed into a product from the reactor is favored.
  • a further advantage of a reactor according to the invention for batch operation can be that in the case of a reaction mixture comprising a plurality of components having different viscosities, in particular a liquid and a pasty component, with a partially filled mixing space, one or more longitudinal sections having a direction opposite to the preceding longitudinal sections Conveying movement can be specifically arranged on the rotors to prevent so-called spillover of the liquid component.
  • a compacting zone thus acts blocking against certain liquid components and ensures that the liquid components can pass through this compacting zone only after their incorporation into the reaction mixture.
  • Kompaktierzonen By forming Kompaktierzonen can be achieved that a resulting from a partial reaction or externally supplied liquid component remains in a certain area of the mixing chamber until it is evaporated or absorbed by the reaction mixture.
  • Zones with different degrees of conveying effect can be located, for example, in compaction zones.
  • vapors, as well as any measuring points are arranged in an overhead part of the housing, since at a partial filling of the reactor at these locations less prone to sticking and / or clogging, since the reaction material is not caked and stuck , This makes cleaning of such a reactor less frequent and / or easier.
  • the kinematic promotion is based on the observation that moving, for example, rotating machine parts (for example, the kneading bars) at a predetermined angle of attack (inclination) to resting Walls (shell wall) strike past and cause a net flow of the reaction material with a kinematic conveying component in the axial direction.
  • Characteristic of the kinematic promotion is the dependence of the conveying direction on the direction of rotation of the rotors. When the direction of rotation reverses, the direction of the conveying movement and the resulting flow of the reaction material changes.
  • the rotating kneading bars slide along the jacket wall of the housing with a cleaning edge formed on the kneading bar in front of them (kinematic conveying).
  • the radial angle of attack of the shear flanks leads to a partial flow of the reaction material located in front of the kneading bars being deflected radially relative to the rotor shaft and being able to escape under the kneading bars.
  • a caused by the inclination / inclination of the kneading bars kinematic conveying component in the axial direction can support or inhibit an axially dispersive conveying component, which is caused by the arrangement of the segment discs on the rotor shafts.
  • each segment disc and each kneading bar of the one rotor which penetrate into these chambers of the other rotor, displace the reaction material located in the chamber by its own volume.
  • the displaced volume can escape in the direction of rotation only through the openings between the circumferentially leading segment disc and the axially limiting segment discs of the chamber.
  • these openings are of different sizes, the majority of the reaction material escapes preferentially in the direction of the larger opening, as there encounters less resistance there. This results in a conveying movement in the direction of the larger openings.
  • the axial component of this conveying movement is referred to as axially dispersive conveying component.
  • the delivery behavior and the distribution of the flow of the reaction mixture in the individual segment discs can be controlled.
  • Gravity or gravity tends to equalize axial fill level differences in the mixing space of the reactor. With increasing viscosity of the reaction material or in hard-flowing powders or granules, the contribution of gravity to the overall product flow decreases. This transport mechanism is independent of direction of rotation and speed.
  • Fig. 1 shows the between two end walls 10, 12 of a housing 14 of a large-volume reactor 16 (see Fig.2 ) arranged active portion of the one of two rotors 18, 20 in settlement.
  • Fig. 1 is the direction of rotation of the rotor 18 is indicated by an arrow D1.
  • the rotor 18 has a plurality of segment disks 28, 30, 32, 34 projecting at right angles from a rotor shaft 22 in the radial direction (see also FIGS Fig. 2 and 3 ).
  • the segment discs are associated with segmental planes 36, 38, 40, 42, 44, which with respect to a rotor axis 46 (see Fig.2 ) are arranged at right angles and spaced apart in the axial direction.
  • a circumferentially leading end 56 of the segment disc 26 is connected via a kneading bar 52 with the axially adjacent segment disc 30, while a circumferentially trailing end 58 of the segment disc 26 is connected via the kneading bar 54 with the axially adjacent segment disc 28.
  • the kneading bars 54, 56 protrude in the axial direction over the respective segment discs 26, 28, 30.
  • axially adjacent kneading bars 52, 52 ' which are mutually offset in the circumferential direction, are spaced apart from one another by a gap 60.
  • the length of the kneading bars 52, 54 is chosen so that contribute during operation for cleaning the respective segment discs of the other rotor 20. All kneading bars 52, 54 are arranged parallel to the rotor axis 46 and intended to cooperate with a casing wall 90 of the housing 14 located between the end walls 10, 12.
  • the edge-side segment discs 47 are each connected to a single segment disc 32, which is adjacent in the axial direction, by means of a kneading bar 66.
  • the circumferentially trailing end 58 'of the peripheral segment disc 47 carries in each case a kneading bar 68, which does not provide an axial connection to an adjacent segment disc.
  • the resulting axial displacement of the reaction material in a direction parallel to the rotor axis was caused by a conveying movement 78, which has an axially dispersive conveying component 80.
  • Fig. 2 and 3 are views of a reactor according to the invention.
  • the reactor 16 has a housing 14, which surrounds the cylindrical mixing chamber 92 by means of a first end wall 10, a second end wall 12 and a jacket wall 90 connecting these end walls 10, 12.
  • the substantially cylindrical housing 14 is aligned horizontally on a foundation-like pad 94th
  • the housing 14 is double-walled in a middle region 96 of the jacket wall 90 of the mixing chamber 92 in order to supply or withdraw the reactor 16 in operation at most the required additional thermal energy to achieve the desired reaction.
  • the housing 14 in the region 96 of the jacket wall 90 to a heating / cooling inlet 98, through which a medium for heating or cooling of the mixing chamber 92 a double wall zone 100 is supplied, and a heating / cooling outlet 102, via which the medium then again can be dissipated.
  • the medium is fed via a, not shown, closed circuit to a likewise not shown recooler / heat exchanger.
  • the housing 14 For charging with components and additives for the production of a product, referred to below as reactant, the housing 14 has an inlet 104, which is arranged at the first end wall 10 in an overhead region of the housing 14.
  • the housing 14 has an outlet 106, which is arranged at half of the housing at the second end wall 12.
  • Fig. 1 shown reactor housing 14 a vapor pipe 108 which is disposed between the first end wall 10 and the second end wall 12 in an overhead region of the housing 14.
  • reaction product can be discharged by means not shown further, such as a discharge screw.
  • a first roller-shaped rotor 18 and a second roller-shaped rotor 20 are mounted such that their rotor shafts 22, 24 are spaced apart and are arranged centrally in the mixing chamber 92, and axially parallel to each other and the substantially cylindrical mixing chamber 92 are arranged ,
  • the first rotor 18 is a mirror-symmetrical design of the second rotor 20.
  • the rotor shafts 22, 24 define an axial direction and rotate about the rotor axes 46, 46 'at the same speed, but in different rotational directions D1, D2.
  • a gear 122 driven by a motor 120 is used for driving the rotor shafts 22, 24, for example.
  • Each rotor shaft 22, 24 has a plurality of segment discs 26, 28, 30, 32, 34, 47, etc. protruding at right angles in the radial direction.
  • the rotor shafts 92, 94 each have three segment discs 124, 126, 128, 124 ', 126', 128 'assigned, which are arranged distributed uniformly on the circumference of the respective rotor shafts 22, 24. Die Segmentassin 124, 126, 128 °.
  • segment discs 124, 126, 128, 124 ', 126', 128 ' are associated with segment planes such as the segment plane 130, which are arranged at right angles with respect to a rotor axis 46 and spaced apart in the axial direction.
  • All segment discs 26 of the rotor shaft 22, with the exception of the edge-side segment discs 47, which are the segmental planes 48 and 50 assigned to the end walls 10, 12 - seen in the axial direction - to both adjacent segment discs 28, 30 on the same rotor 22 in circumferential , or rotational direction D1 is arranged offset and connected to a kneading bar 52, 54. In the Fig. 1 shown kneading bars 52, 54 are arranged parallel to the rotor axis 46 and thus in a neutral position.
  • the kneading bars 52, 54 project in the axial direction over the respective segment discs 26, 28, 30. In the axial direction, axially adjacent kneading bars 52, 52 ', which are mutually offset in the circumferential direction, are spaced apart from one another by a gap 60. The length of the kneading bars 52, 52 ', 54 is chosen so that contribute during operation for cleaning the respective segment discs of the other rotor 20. All kneading bars 52, 52 ', 54, 68 are arranged parallel to the rotor axis 46 and intended to cooperate with a casing wall 90 of the housing 14 located between the end walls 10, 12.
  • a small gap 136 between the kneading bars 52, 52 ', 54, 68 and the jacket wall 90 of the mixing chamber 92 is a few millimeters, usually 1 to 5 mm.
  • the column width is also dependent on the size of the rotors 18, 20th
  • the in Fig. 2 illustrated rotor 18 of the reactor 16 is formed symmetrically with respect to a longitudinally arranged section separation plane 140.
  • This section separating plane 140 lies simultaneously on a segment plane and forms a boundary between a longitudinal section 142 and a further longitudinal section 144.
  • the rotor shafts 22, 24 each consist of a shaft-like rotor core 146 and a hollow-cylindrical shell part 148 enclosing the rotor core 146.
  • the kneading bars 52, 54 have a teardrop-shaped cross-section, wherein an educated cleaning edge 150 is arranged in the direction of rotation D1 in advance.
  • the drop-shaped cross section of the kneading bars 52, 54, 68 has the consequence that the cleaning behavior of the kneading bars 52, 54 takes place only when operating in the direction of rotation D1, while in an operation in the opposite direction of rotation D2 the casing wall 90 and the kneading bars 52, 54, 68 form a narrowing gap 136. It does not matter whether the kneading bars 52, 54, 68 are inclined relative to the rotor axis 46 by an angle ⁇ or not.
  • the kneading bars 52, 54, 68 serve to achieve a locally higher shear.
  • zones of increased shear serve as plasticizing zones.
  • the small gap 136 of the kneading bars 52, 54 to the jacket wall 90 of the housing 14 leads to a higher energy input.
  • the increased temperature in this zone supports the melting of a crumb-shaped reaction mixture.
  • the direction of rotation D1 / D2 the speed of the rotor shafts 22, 24 and the number of kneading bars and segment discs are adapted to the mixture / reaction material to be processed.
  • Fig. 4 shows a Rotorabwicklung a rotor 18, 20 of a reactor according to the invention 16.
  • Fig. 4 shows a Rotorabwicklung a rotor 18, 20 of a reactor according to the invention 16.
  • the segment discs 26, 28, 30 of the Fig. 4 corresponding rotor 18 are arranged in a longitudinal portion 142 similar to those in the Fig. 1 , Adjoining the longitudinal section 142, the further longitudinal section 144 follows.
  • the section separating plane 140 arranged longitudinally between the end walls 10, 12 delimits the longitudinal section 142 from the further longitudinal section 144.
  • the rotor development in the further longitudinal section 144 is a mirror image of the arrangement of the segment discs 26, 28, 30 and kneading bars 52, 54 in the longitudinal section 142.
  • segment discs 26 ', 28' located in the further longitudinal section 144 , 30 ' are also arranged on concentric with the rotor axis 46 lying, spiral lines.
  • the spiral lines in the longitudinal section 142 have a direction of rotation which is opposite to the spiral lines in the further longitudinal section 144.
  • Fig. 4 carries each of the section separating plane 140 associated segment disc 152 at a trailing in the direction of rotation D1 end 58 in the circumferential direction a kneading 154, which does not connect to an axially adjacent segment disc 156, 158. Similar to the kneading bars 52, 54, the kneading bar 154 protrudes in the axial direction over the segment disk 152. In the axial direction, axially adjacent kneading bars 54, 154, which are mutually offset in the circumferential direction, are spaced apart from one another by a gap 60.
  • the length of the kneading bar 154 is selected so that it contributes during operation for cleaning the respective corresponding segment discs of the other rotor 20.
  • a chamber 160 following the kneading bar 154 with respect to the direction of rotation D1 is formed which is longer in the axial direction than the remaining chambers 70.
  • each segment disc 152 has a kneading bar 162 in the circumferential direction at an end 56 leading in the direction of rotation D1, which each creates a connection to the axially adjacent segment discs 156, 158.
  • the kneading bar 140 protrudes in the axial direction via the segment discs 156, 15.
  • axially adjacent kneading bars 54, 162 which are mutually offset in the circumferential direction, are spaced apart from one another by a gap 62.
  • the length of the kneading bar 162 is chosen so that it contributes during operation for cleaning the respective corresponding segment discs of the other rotor 20.
  • a chamber 164 leading the kneading bar 162 with respect to the direction of rotation D1 is formed, which is shorter in the axial direction than the remaining chambers 70.
  • a compacting zone 170 is defined by a purposeful different arrangement of the segment discs 26, 26 ', 28, 28', 30, 30 ', 152 on a rotor 18, 20 during operation in the direction of rotation D1 in which the axial-dispersive delivery component 80 and the axially-dispersive delivery component 168 counteract each other. If the spiral-shaped lines in the longitudinal section 142 have the same slopes in terms of magnitude as the spiral-shaped lines in the further longitudinal section 144, the axially dispersive conveying components 80, 168 are theoretically identical in absolute value. The formed Kompaktierzone 170 is therefore located centrally in the section separation plane 140th
  • the axial dispersion is accordingly favored by the special geometry of the rotors 18, 20, in that the segment discs 26, 26 ', 28, 28', 30, 30 ', 152 are arranged correspondingly on the respective rotor shafts 18, 20. This results in a symmetrical conveying behavior, which in Fig. 4 symbolically shown by another mass displacement pattern 172.
  • Fig. 5 shows a development of a rotor 18, 20 of a second embodiment of a reactor according to the invention 16.
  • the section separation plane 140 is arranged in the direction of the second end wall 12 displaced on the rotor shafts 22, 24.
  • the rotor 22 is the same structure as the rotor 22 according to the in Fig. 4 shown execution.
  • the resulting compacting zone 170 is also moved along with the section separating plane 140 in the same direction.
  • Fig. 6 1 shows a developed view of a rotor 18, 20 of a third embodiment of a reactor 16 according to the invention.
  • the arrangement of the disk elements 26, 26 ', 28, 28', 30, 30 ', 152 and the section separating plane 140 corresponds to the rotor 18 according to FIG Fig. 4 shown Rotorabwicklung.
  • the kneading bars 174 ', 176' which are located in the further longitudinal section 144, however, are inclined at an angle + ⁇ in such a way that they bring about an additional conveying movement 184 with a kinematic conveying component 186 of the reaction material in the axial direction, which leads to the aforementioned kinematic conveying component 182 has an opposite direction.
  • kneading bars 154, 162 of Fig. 4 similar seeing kneading bars 188, 190, which are supported by the segment slices 140 associated segment discs 152, or carried along, have in the region of the section separating plane 140 a kink-like course to the kinematic conveying movements 180, 184 of the respective longitudinal sections 142, 144 to meet.
  • Fig. 7 1 shows a development of a rotor 18, 20 of a fourth embodiment of a reactor 16 according to the invention.
  • the arrangement of the disk elements 26, 26 ', 28, 28', 30, 30 ', 152 and the parting plane 140 corresponds to the rotor 18 corresponding to that in FIG Fig. 4 shown Rotorabwicklung, wherein the kneading bars with respect to the rotor axis 46 similar to the Fig. 6 in turn are arranged obliquely.
  • kneading bars 192, 192 ', 194, 194' with respect to the rotor axis 46 inclined at an angle ⁇ .
  • kneading bars 192, 194 which are located in the longitudinal section 142, are inclined at an angle + ⁇ in such a way that they bring about an additional conveying movement 196 with a kinematic conveying component 198 of the reaction material in the axial direction.
  • the kneading bars 154, 162 of Fig. 4 Similar seeing kneading bars 204, 206 which are carried or carried along by the segment disks 152 assigned to the section separating plane 140 have a kink-like profile in the region of the section separating plane 140 in order to satisfy the kinematic conveying movements 196, 200 of the respective longitudinal sections 142, 144.
  • Fig. 8 shows a development of a rotor 18 of a fifth embodiment of a reactor according to the invention 16.
  • the rotor 18 is designed such that its settlement a settlement according Fig. 4 corresponds to which in the axial direction, a further section separating plane 208 adjacent to which the settlement according to Fig. 4 a second time and adjacent to the following.
  • the longitudinal section 142 each have a further longitudinal section 144, and vice versa.
  • the section separation plane 140 is arranged twice, and the further section separation plane 208 is arranged centrally between the aforementioned two section separation planes 140 and the end walls 10, 12 on the rotors 18, 20.
  • the reactor 16 with a rotor development according to Fig. 8 has in operation in the direction of rotation D1 on a delivery behavior, which creates a Kompaktierzone 170 at each Schwarzrennebene 140 each.
  • a zone 210 created at the cut-off separation plane 208 has opposite properties with respect to the compacting zone 170 (decompaction).
  • Fig. 9 shows a development of a rotor 18 of a sixth embodiment of a reactor according to the invention 16.
  • the rotor 18 is designed such that its settlement a settlement according Fig. 6 corresponds to which in the axial direction, a further section separating plane 208 adjacent to which the settlement according to Fig. 6 a second time and adjacent to the following.
  • the longitudinal section 142 each have a further longitudinal section 144, and vice versa.
  • the section separation plane 140 is arranged twice, and the further section separation plane 208 is arranged centrally between the aforementioned two section separation planes 140 and the end walls 10, 12 on the rotors 18, 20.
  • the kneading bars 174, 176 of the longitudinal sections 142 are again inclined with respect to the rotor axis 46 at an angle - ⁇ , during which the kneading bars 174 ', 176' of the further longitudinal sections 144 are in turn inclined at an angle + ⁇ .
  • the kneading bars 204, 206 of Fig. 7 Similar seeing kneading bars 212, 214, which are supported by the segment slices 208 associated segment slices 260, have in the region of the section separating plane 208 a kink-like course in order to satisfy the kinematic conveying movements 78, 166 of the respective longitudinal sections 142, 144.
  • the reactor 16 with a rotor development according to Fig. 9 has in operation in the direction of rotation D1 on a conveying behavior, in which the kinematic conveying movements 182 and 186 caused by the kneading bars 174, 174 ', 176, 176', 212, 214 to the axialdispersive conveying movements 80 prevailing in the respective longitudinal sections 142, 144 , 168 supportive.
  • Fig. 10 shows a development of a rotor 18 of a seventh embodiment of a reactor according to the invention 16.
  • the rotor 18 is designed such that its settlement of a settlement according Fig. 7 corresponds to which in the axial direction, a further section separating plane 208 adjacent to which the settlement according to Fig. 7 a second time and adjacent to the following.
  • the longitudinal section 142 each have a further longitudinal section 144, and vice versa.
  • the section separation plane 140 is arranged twice, and the further section separation plane 208 is arranged centrally between the aforementioned two section separation planes 140 and the end walls 10, 12 on the rotors 18, 20.
  • the kneading bars 192, 194 of the longitudinal sections 142 are again inclined with respect to the rotor axis 46 at an angle + ⁇ , during which the kneading bars 192 ', 194' of the further longitudinal sections 144 are again inclined at an angle - ⁇ .
  • the kneading bars 188, 190 of Fig. 6 Similar seeing kneading bars 218, 220, which are carried or carried along by segment discs 216 assigned to the section separating plane 208, have a kink-like profile in the region of the section separating plane 208 in order to satisfy the kinematic conveying movements 196, 200 of the respective longitudinal sections 142, 144.
  • the reactor 16 with a rotor development according to Fig. 10 has in operation in the direction of rotation D1 on a conveying behavior in which the kinematic conveying movements 196 and 200 caused by the kneading bars 192, 192 ', 194, 194', 218, 220 affect the axial-dispersive conveying movements 78 prevailing in the respective longitudinal sections 142, 144 , 166 inhibiting effect.
  • the simplified illustrated housing 14 has two inlets 104 and 104 'for the feed. Further, the housing 14 shown has an outlet 106 for removal of the processed reaction material and a vapor nozzle 108 for removal of volatile components of the reaction mixture.
  • the rotors 18, 20 are designed such that they have a like in Fig. 10 show shown rotor development.
  • the rotor shafts 22, 24 of the reactor 16 are now driven in opposite directions to each other in a first direction of rotation D1.
  • the disk segments 26, 26 ', 28, 28', 30, 30 'and the kneading elements 192, 192', 194, 194 ', 204, 206, 218, 220 so that the axially dispersive conveying components 80, 168 are larger than the are kinematic delivery components 198, 202
  • the reaction material is compacted by the resulting resulting conveying movements in each case in a lying in the region of the section separating planes 140 Kompaktierzone 170 and undergoes a particularly intimate mixing.
  • Fig. 12 shows the same reactor 16 as in the Fig. 11 showing an operating condition in which the rotor shafts 22, 24 are in the opposite direction of rotation D1 D2 are driven.
  • Fig. 12 seen that instead of in Fig. 11 occurred Kompaktierzonen 170 new Kompaktierzonen 170 'at the end walls 10, 12, and at the central portion separation plane 208, which have similar properties as the Kompaktierzone 170.
  • a reactor 16 having such a structure of the rotors 18, 20 and such a structure of the housing 14 is therefore particularly advantageous for batch operation.
  • the outlet 106 is located at a segment level, which is at the same time also section separation plane, as the section separation plane 208 in FIG Fig. 12 ,
  • Fig. 13 shows a novel reactor 16 ', which rotors 18, 20, the unwinds a plurality of longitudinal sections 142 of a rotor 18 according to Fig. 6 and a plurality of further longitudinal sections 144 of a rotor 18 according to Fig. 7 demonstrate.
  • the longitudinal sections 142 and the further longitudinal sections 144 are arranged in pairs along the rotor axis 46 in succession. The arrangement was made such that a longitudinal section 142 is followed by a further longitudinal section 144, and vice versa.
  • the section separating plane 140 is arranged three times, one of which is longitudinally centered, and one further section separating plane 208 is arranged centrally between in each case two section separating planes 140.
  • the housing 14 of the present embodiment of the reactor 16 'in this case has an inlet 104 in / at the first end wall 10, an outlet 106 in / at the second end wall 12, and two vapor sockets 108, 108' in the upper region of the housing 14.
  • the axially dispersive conveying component 80 in a longitudinal section 142 in the same direction as the kinematic conveying component 182.
  • the further longitudinal section 144 shows the axially dispersive conveying component 168 in the opposite direction to the kinematic conveying component 202.
  • each longitudinal section 142, 144 each have a net flow 222, 224, which has opposite directions of action in the axial direction.
  • the reaction material is jammed at operation with rotor shafts 22, 24 driven in opposite directions in the direction of rotation D1 at the cutting separation planes 140, which leads to compacting zones 170 "at these cutting separation planes 140.
  • the reaction mixture introduced through the inlet 104 can be moved in a quasi-stepwise manner from the first end wall 10 in the direction of the second end wall 12 during processing in the axial direction.
  • Fig. 14 1 shows a development of a rotor 18, 20 of an embodiment of a large-volume reactor 16 "according to the invention Fig. 1 shown Rotorabwicklung has a rotor 18 according to Fig. 14 Chambers of different lengths.
  • Adjoining the marginal segment disk 47, the chamber 70, which in the axial direction and in each case separated by a further segment disc 226, 228, 230, a longer chamber 232, an even longer chamber 234 and a further longer chamber 236 follows.
  • the segment discs 47, 226, 228, 230 are arranged in the circumferential direction relative to one another without displacement in a chamber row 238. Kneading bars adapted to the lengths of the chambers 70, 232, 234, 236 are corresponding length adjusted.
  • the remaining rows are formed by successive chambers in the axial direction, wherein each chamber is arranged offset relative to a trailing in a rotational direction D1 chamber axially in the same direction.
  • segment discs 47, 226, 228, 230 of these rotors 18, 20 are arranged on continuous, spiral-shaped lines 240, the pitch of which changes as a function of the location in the longitudinal direction (axial direction).
  • the different chamber lengths can cause a different axial dispersion.
  • arrangement of the disc elements and kneading a conveying movement of the first end wall 10 in the direction of the second end wall 12 is effected.
  • segment disks are profiled-like along their edge, or chamfered, in order to minimize the shearing of the reaction mixture between segment disk and casing wall 90.
  • the kneading bars can also cause a reduction of the reaction material, especially when solidifying and clumping products tend to material accumulation and bridging.
  • the Knetbarren provided with Abcuriskanten are preferably designed so that the Abtheseskanten are relief ground and there is a clearance angle to the surfaces to be cleaned. This back-grinding, or turning behind causes the remaining in the gap zone between the Abtheseskante and the mating surface, or jacket wall reaction material is not rolled.
  • the reactor instead of the horizontal structure has a sloping or even vertical structure, for example, to use the gravity.
  • the rotors are not mirror-symmetrically constructed with respect to section separation planes, since, for example, they may have different numbers of kneading elements in a segment plane in different sections.
  • the reactor is provided with additional thermal exchange surfaces in that the rotor shaft and / or the segment discs can be heated and / or cooled.
  • the rotor shafts on each of an outer end of the shaft journal rotational sealing heads.
  • the reactor is to be used for use as a continuous reactor, it is further conceivable to associate the rotor shafts 22, 24 at the outlet 106 with an additional discharge medium, for example in the form of a screw conveyor.
  • the housing 14 in the region of the mixing chamber 92 has a substantially heart-shaped or pretzel-shaped cross section, with a partial cleaning of the jacket wall 90 by the kneading only in the area of the rotors 18, 20th takes place.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (15)

  1. Réacteur de grand volume comprenant au moins deux rotors (18, 20) disposés avec leurs axes parallèles dans un boîtier (14),
    chacun des rotors (18, 20) présentant un arbre de rotor (22, 24) et des disques segmentés (26, 28, 30, 32, 34) saillant radialement depuis celui-ci, au moins approximativement dans des plans de segments (36, 38, 40, 42, 44) s'étendant à angle droit par rapport aux arbres des rotors (22, 24) et espacés les uns des autres dans la direction axiale,
    chaque disque segmenté (26, 28, 30, 32, 34) d'un rotor (18, 20) étant disposé de manière décalée dans la direction périphérique par rapport au disque segmenté (26, 28, 30, 32, 34), adjacent dans la direction axiale, du même rotor (18, 20), et portant une barre de malaxage (52, 54) devant coopérer avec une paroi d'enceinte (64) du boîtier (14),
    les disques segmentés (26, 28, 30, 32, 34) d'un rotor (18, 20) venant en prise, pendant le fonctionnement, à travers des fentes (60, 62) de l'autre rotor (18, 20) formées par les barres de malaxage (52, 54) dans des vides entre les disques segmentés (26, 28, 30, 32, 34) de l'autre rotor (18, 20) associés au même plan de segment (36, 38, 40, 42, 44),
    caractérisé en ce que
    les rotors (18, 20) confèrent au produit de réaction un mouvement de transport ayant, dans une portion longitudinale (142) du réacteur, une composante (80, 182 ; 198) s'étendant dans la direction axiale, et dans une autre portion longitudinale (144), une composante (168, 186 ; 202) s'étendant dans la direction opposée, que la portion longitudinale (142) et l'autre portion longitudinale (144) sont adjacentes l'une à l'autre dans un plan de séparation de portion (140) s'étendant à angle droit par rapport aux arbres des rotors (22, 24), et que le plan de séparation de portion (140) coïncide avec l'un des plans de segment (36, 38, 40, 42, 44) et chaque disque segmenté (152) associé à ce plan de segment, vu dans la direction périphérique, porte d'une part une barre de malaxage (154), qui est connectée exclusivement au disque segmenté porteur (152), et d'autre part une barre de malaxage (162) qui est connectée aux deux disques segmentés (156, 158) adjacents dans la direction axiale.
  2. Réacteur de grand volume selon la revendication 1, caractérisé en ce que les rotors (18, 20) sont réalisés symétriquement par rapport au plan de séparation de portion (140) dans la portion longitudinale (142) et dans l'autre portion longitudinale (144).
  3. Réacteur de grand volume selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le boîtier (14) présente deux parois frontales (10, 12), et - à l'exception des disques segmentés (47) qui sont associés au plan de segment (48, 50) placé le plus près des parois frontales (10, 12) - chaque disque segmenté (26, 28, 30, 32, 34) est connecté au moyen d'au moins une barre de malaxage (52, 54, 162) aux deux disques segmentés (26, 28, 30, 156, 158) adjacents dans la direction axiale.
  4. Réacteur de grand volume selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les barres de malaxage (52, 54, 162) sont disposées parallèlement à la direction axiale.
  5. Réacteur de grand volume selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les barres de malaxage (174, 174', 176, 176') sont disposées de manière inclinée par rapport à la direction axiale et le mouvement de transport conféré au produit de réaction par les rotors (18, 20) contient d'une part une composante de déplacement (80, 168) dispersive axialement, causée par les disques segmentés (26, 28, 30, 32, 34) et d'autre part une composante de transport cinématique (182, 186) dans la direction axiale, causée par les barres de malaxage (174', 176', 192', 194') disposées de manière inclinée.
  6. Réacteur de grand volume selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les barres de malaxage (174, 176, 192, 194) dans la portion longitudinale (142) sont inclinées dans une direction par rapport à la direction axiale, et les barres de malaxage (174', 176', 192', 194') dans l'autre portion longitudinale (144) sont inclinées dans la direction opposée.
  7. Réacteur de grand volume selon la revendication 5, caractérisé en ce qu'au moins dans la portion longitudinale (142), la composante de transport cinématique (182) et la composante de transport dispersive axialement (80) présentent axialement la même direction.
  8. Réacteur de grand volume selon la revendication 5, caractérisé en ce qu'au moins dans la portion longitudinale (142), la composante de transport cinématique (198) présente, par rapport à la composante de transport dispersive axialement (80), une direction opposée axialement.
  9. Réacteur de grand volume selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les disques segmentés (26, 28, 30, 32, 34) sont disposés sur des lignes en spirale s'étendant coaxialement aux arbres respectifs des rotors (22, 24).
  10. Réacteur de grand volume selon la revendication 9, caractérisé en ce que les lignes en spirale présentent, dans la portion longitudinale (142), une autre pente que les lignes en spirale dans l'autre portion longitudinale (144).
  11. Réacteur de grand volume selon la revendication 9 ou 10, caractérisé en ce que les lignes en spirale dans la portion longitudinale (142) présentent, par rapport aux lignes en spirale dans l'autre portion longitudinale (144), un sens de rotation opposé.
  12. Réacteur de grand volume selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les barres de malaxage (52, 54) présentent une section transversale essentiellement en forme de goutte.
  13. Réacteur de grand volume selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le boîtier (14) présente au moins un tuyau de vapeur (108), ainsi qu'au moins une entrée (104), afin de pouvoir acheminer un ou plusieurs composants.
  14. Réacteur de grand volume selon l'une quelconque des revendications 1 à 13, caractérisé en ce que le boîtier (14) présente au moins une sortie (106), afin de pouvoir enlever le produit de réaction après un traitement satisfaisant.
  15. Procédé pour faire fonctionner un réacteur de grand volume selon l'une quelconque des revendications 1 à 14, caractérisé en ce que les rotors (18, 20) sont entraînés pendant le fonctionnement toujours en sens inverse et en alternance dans un sens de rotation, ainsi que dans le sens de rotation opposé.
EP05008591A 2005-04-20 2005-04-20 Mélangeur / réacteur gros volume Not-in-force EP1714694B2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502005006692T DE502005006692D1 (de) 2005-04-20 2005-04-20 Grossvolumiger Mischer / Reaktor
AT05008591T ATE423614T1 (de) 2005-04-20 2005-04-20 Grossvolumiger mischer / reaktor
ES05008591T ES2321412T3 (es) 2005-04-20 2005-04-20 Mezclador / reactor de gran volumen.
EP05008591A EP1714694B2 (fr) 2005-04-20 2005-04-20 Mélangeur / réacteur gros volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05008591A EP1714694B2 (fr) 2005-04-20 2005-04-20 Mélangeur / réacteur gros volume

Publications (3)

Publication Number Publication Date
EP1714694A1 EP1714694A1 (fr) 2006-10-25
EP1714694B1 EP1714694B1 (fr) 2009-02-25
EP1714694B2 true EP1714694B2 (fr) 2011-11-02

Family

ID=34979635

Family Applications (1)

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EP05008591A Not-in-force EP1714694B2 (fr) 2005-04-20 2005-04-20 Mélangeur / réacteur gros volume

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EP (1) EP1714694B2 (fr)
AT (1) ATE423614T1 (fr)
DE (1) DE502005006692D1 (fr)
ES (1) ES2321412T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1792643B1 (fr) 2005-12-05 2010-11-24 Buss-SMS-Canzler GmbH Réacteur à grand volume respectivement évaporateur à couche mince combiné avec un dispositif pré-melangeur
ITNA20080041A1 (it) * 2008-07-17 2010-01-18 Catalano Adriana Sistema di miscelazione e riscaldamento materiali incoerenti
DE102008048580B4 (de) * 2008-09-23 2014-08-21 List Holding Ag Vorrichtung zur Durchführung von mechanischen, chemischen und/oder thermischen Prozessen
DE102012103565A1 (de) * 2012-04-24 2013-10-24 List Holding Ag Vorrichtung zum Transport von viskosen Massen und Pasten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2012294A1 (de) † 1969-03-17 1970-10-01 Heinz List Misch und Knetmaschine
DE2349106A1 (de) † 1972-10-18 1974-05-02 List Heinz Mischkneter mit gegenschaufeln
EP0274668A1 (fr) † 1986-12-19 1988-07-20 List AG Malaxeur-pétrisseur
EP0715881A2 (fr) † 1994-12-05 1996-06-12 Bayer Ag Réacteur-mélangeur complètement autonettoyant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2123956C3 (de) * 1970-05-20 1979-09-20 Heinz Dipl.-Ing. Pratteln List (Schweiz) Misch- und Knetmaschine
JPS5021514B2 (fr) * 1972-04-12 1975-07-23
DE10150900C1 (de) * 2001-10-18 2003-04-24 List Ag Mischkneter mit unterschiedlich dicken Tragelementen für Knetbarren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2012294A1 (de) † 1969-03-17 1970-10-01 Heinz List Misch und Knetmaschine
DE2349106A1 (de) † 1972-10-18 1974-05-02 List Heinz Mischkneter mit gegenschaufeln
EP0274668A1 (fr) † 1986-12-19 1988-07-20 List AG Malaxeur-pétrisseur
EP0715881A2 (fr) † 1994-12-05 1996-06-12 Bayer Ag Réacteur-mélangeur complètement autonettoyant

Also Published As

Publication number Publication date
ATE423614T1 (de) 2009-03-15
EP1714694A1 (fr) 2006-10-25
EP1714694B1 (fr) 2009-02-25
ES2321412T3 (es) 2009-06-05
DE502005006692D1 (de) 2009-04-09

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