EP1742725B1 - Procede et dispositif de traitement pneumatique de substances pulverulentes - Google Patents

Procede et dispositif de traitement pneumatique de substances pulverulentes Download PDF

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Publication number
EP1742725B1
EP1742725B1 EP05715997A EP05715997A EP1742725B1 EP 1742725 B1 EP1742725 B1 EP 1742725B1 EP 05715997 A EP05715997 A EP 05715997A EP 05715997 A EP05715997 A EP 05715997A EP 1742725 B1 EP1742725 B1 EP 1742725B1
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European Patent Office
Prior art keywords
container
vessel
material flows
interior
line
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EP05715997A
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German (de)
English (en)
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EP1742725A2 (fr
Inventor
Frédéric Dietrich
Yves Dietrich
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Dietrich Engineering Consultants SA
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Dietrich Engineering Consultants SA
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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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • F26B17/104—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with fixed or moving internal bodies for defining or changing the course of the entrained material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B01F25/104—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components characterised by the arrangement of the discharge opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • 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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/107—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers pneumatically inducing within the drying enclosure a curved flow path, e.g. circular, spiral, helical; Cyclone or Vortex dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an apparatus for the pneumatic treatment of powdery substances according to the preamble of claim 7.
  • a conveyor device for plastic granules with a hose line protrudes, which dives at one end by means of a lance in a storage silo and the other protrudes through a filter support into a pipe socket which sits on the box-like inlet of a tangential intake opening of a plasticizing.
  • a suction chamber about the filter support a likewise penetrated by the hose line cover assembly is provided with a suction chamber. The latter has suction openings directed towards the pipe socket and is in operative connection with a nozzle system to which compressed air or compressed gas can be supplied as working medium.
  • a relatively high negative pressure is generated, which propagates through the suction openings and the filter in the pipe socket and from there through the suction line into the storage silo.
  • that working medium should generate such a high pressure that the solids are sucked into that box-type inlet while being mixed with a suction air stream.
  • the solids are separated from the suction air stream, and this is mixed with the working fluid. Filter cleaning can not be performed during the process.
  • the EP 0 574 596 A describes a plant for the pneumatic handling of cement from ships in silos by means of a so-called.
  • Lock container of several container segments in the uppermost container segment sits an exhaust filter, the lowermost container segment tapers like a funnel.
  • a device for the pneumatic conveying of powdered substances of a specific gravity of 0.1 to 15.0 g / cm 3 and with a particle size range between 0.1 to 300 microns as conveyed using a filter in pipe systems is after US 6,325,572 B1 the ratio of the length of a container containing a pumping chamber for temporarily receiving the material to be conveyed to its inner diameter between 0.5 and 10.
  • the ratio of the length of a container containing a pumping chamber for temporarily receiving the material to be conveyed corresponds to the width of a provided between a vacuum pump for sucking the conveyed material and the container - as interchangeable arranged in a filter insert plate-like Filter membrane formed - filters at most of its diameter determined by that diameter.
  • a container is to be taken, at whose funnel-shaped base region two U-shaped tubes provided with a gas inlet are connected at both ends; the gas is introduced at the upper end of the base region and flows through it - as well as bulk material stored in it - towards the lower end of the pipe.
  • CH-A-670 399 discloses a method according to the preamble of claim 1 and an apparatus according to the preamble of claim 7.
  • powdery substances are conveyed and transported in a controlled atmosphere.
  • the known systems for conveying powdered materials of this type are usually tuned in the design of the subsequently to be promoted product; These systems are one-offs which require high investment costs.
  • the filling of powder in reaction vessels or reactors within explosive zones is generally carried out manually via a lock or a protective valve, since most reactors do not have the necessary space for an adequate charging system. Such an operation does not comply with the existing safety rules to prevent the risk of explosion; when the reactor is inertized, manually charging powders from the manhole results in atmospheric pressures and neutralizes the protective effect of the inert gas. In the case of manual solids entry, the inertization is abolished within a short time (O 2 concentration> 8%) and is not restored even after a prolonged operational N 2 purge.
  • two streams of material are fed to the container space through at least two feed pipes, in particular in opposite directions, and are swirled in the container space.
  • the material flows are supplied approximately tangentially, preferably also in about the same container height, so that their tracks intermesh. In this way, an intimate turbulence is generated.
  • the material flows are preferably also introduced at an inclination angle to a radial plane of the container, i. the streams are introduced inclined downwards.
  • each of the streams is taken from a common vessel and thus creates a cycle.
  • the swirling streams should be introduced from the container space in the common vessel and withdrawn together from this.
  • Another approach which can also be combined with the above method, is also to take each of the streams to a separate vessel. In the latter case, preferably different substances are mixed together.
  • connection piece As low it has proven to provide the container at least two mutually approximately parallel connection piece, which are preferably associated with a common radial plane; Conveniently, they should include an inclination angle with the radial plane towards the container axis and / or be inclined downwards towards the container interior. Also, it has proven to be favorable to let the connection piece to each other slightly offset in height in the container interior.
  • the container sits with its lower end to a collecting vessel and the other end is provided with a connection piece.
  • At least one reflection device can be arranged as an impact element, at which the particles bounce off and are pushed back into the stream.
  • the floor-mounted outlet member has at least two output members for a respective line, which is connected at the other end to one of the attachment pieces;
  • the latter is intended, according to a further feature of the invention, to connect the outlet member of the reaction vessel with an attachment neck of the container, thus enabling a circulation.
  • a branch line is connected to the line; this branch is then connected at the end to a vessel containing one of the powdery substances.
  • a device 10 for the pneumatic conveying of powdery materials of small particle size range has a collecting vessel 12 as a main container with a cylindrical vessel wall 14 of a height h and an outer diameter d.
  • the interior 15 of the collecting vessel 12 is closed at the bottom by a housing bottom 16 from which protrudes in the vessel axis A a bowl-like bottom nozzle 17.
  • the vessel interior 15 is spanned by a dome cover 18, from which - a cylindrical container 20 made of electrolytically polished stainless steel of a length a of, for example, 600 mm, projects axially relative to the vessel axis A; whose interior 22 of a diameter d 1 from here 200 mm serves as a vortex chamber.
  • This container interior 22 is of spans a plate-like sieve 24, above which from a container lid 26 a - here T-shaped - connecting piece 28 rises.
  • a vacuum line and at the other end a delivery gas line can be connected, at least the latter containing a check valve.
  • Such valves are exemplary at 29 in Fig. 3 indicated.
  • a butterfly valve 32 is integrated as a blocking member in a connecting flange 34 respectively.
  • the interior 22 of the container 20 are fed through the attachment piece 30, 30 a and the lines 40, 40 a two streams of powdery substances in the conveying direction x and y tangentially and according to Fig.2 on the inner surface of the container 20 in opposite orbits x 1 and y 1 transferred.
  • a support ring 51 of a chassis 52 hanging - collecting vessel 12 a funnel-like design, and its tip 46 merges into a T-shaped pipe connection 47, at the cross tube 48, the two lines 40, 40 a are connected.
  • the latter are defined in holding loops 53 that support ring 51.
  • an intermediate piece is integrated as a lock insert 50, to which a branch line 42 and 42 a is connected; this ends on the other hand with an insert tip 44 and 44 a of rigid material.
  • the insert tips 44 and 44 a of the branch lines 42 and 42 a are each immersed in a vessel 54, 55, which include different powders P, Q; These are fed through the lines 40/42 and 40 a / 42 a the vortexing process in the container interior 22.
  • Fig. 4 can recognize - the parallel attachment piece 30, 30 b arranged opposite to each other, so that the circular paths x 2 , y 2 of the streams x, y are rectified. The turbulence arises here by the lateral impact of the circular paths x 2 , y 2 each other.
  • the container 20 more than a pair of connecting pieces 30, 30 a offer for connection to more than two lines 40, 40 a .
  • the system consists - as described - from a main container 12, 12 a with a deflector installed in the middle 36.
  • a conveyor system with two tangential attachment piece 30, 30 a as inputs attached.
  • their butterfly valves 32 open.
  • the powders are automatically introduced with a powder delivery system and circulated through the main container 12, 12 a for a predetermined period of time.
  • a reflection device ensures a homogeneous distribution of the powder mixture in the main container 12, 12 a .
  • the mixing effect allows a significant increase in the speed and efficiency of mixing.
  • the limited circulation speed prevents damage to the particles.
  • the system can easily be operated under exclusion of oxygen. This also allows hygroscopic powders such as powders, which can oxidize or explode, to be mixed.
  • Powders may be automatically sucked from the vessels 54, 55, for example, from drums, sacks, or directly from process apparatus, granulators, or the like. After completion of the mixing process, the system can be fully automatically and completely emptied into the next processing step. This system does not include any moving or rotating mechanical parts, which allows for easy automatic cleaning.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Disintegrating Or Milling (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (20)

  1. Procédé de traitement pneumatique de matières pulvérulentes (P, Q) dans l'espace de récipient (22) d'un récipient (20) raccordé à un conduit d'amenée (40, 40a) ainsi qu'à une extraction de matériau, deux écoulements de matériau (x, y; P, Q) étant apportés dans un espace (22) du récipient par au moins deux tubes d'amenée (40, 40a) raccordés au récipient (22) et étant fluidisés dans l'espace de récipient (22) du récipient, les écoulements (x1, y1) de matériau fluidisé provenant de l'espace (22) du récipient étant introduits dans une cuve commune (12, 12a) qui présente un espace intérieur (15), les écoulements fluidisés de matériau (x1, y1) étant transportés en circuit fermé entre l'espace (22) du récipient et l'espace intérieur (15) de la cuve,
    caractérisé en ce que
    les écoulements de matériau (x, y; P, Q) provenant de cuves distinctes (54, 55) sont apportés dans le récipient (20) raccordé à un conduit en dépression.
  2. Procédé selon la revendication 1, caractérisé en ce que les deux écoulements de matériau pulvérulent sont transportés en sens opposés.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que les écoulements de matériau (x, y) sont apportés de manière sensiblement tangentielle.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les écoulements de matériau (x, y) sont apportés sensiblement à la même hauteur du récipient et en ce que leurs parcours s'engagent l'un dans l'autre (fig. 4).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que les écoulements de matériau (x, y) sont introduits sous un angle d'inclinaison (w) par rapport à un plan radial (E) du récipient (22).
  6. Procédé selon la revendication 1, caractérisé en ce que les écoulements (x1, y1) de matériau fluidisé sont extraits conjointement de la cuve commune (12, 12a).
  7. Dispositif de traitement pneumatique de matériaux pulvérulents (P, Q), qui présente un récipient (20) raccordé à un conduit d'amenée (40, 40a) ainsi qu'à une extraction (23) du produit transporté en vue de l'exécution du procédé selon l'une des revendications précédentes, au moins deux conduits d'amenée (40, 40a) étant prévus, chacun pour un écoulement de matériau et étant raccordés chacun à une tubulure de raccordement (30, 30a, 30b) d'un récipient (20), le récipient (20) reposant par son extrémité inférieure sur une cuve de reprise (12, 12a) qui présente un espace intérieur (15) de cuve, l'espace intérieur (15) de la cuve étant doté d'un organe d'évacuation (17) situé dans son fond et l'organe d'évacuation (17) situé dans le fond présentant au moins deux organes de sortie (38) pour respectivement un conduit (40, 40a) raccordé à l'autre extrémité à l'une des tubulures de raccordement (30, 30a),
    caractérisé en ce que
    les écoulements de matériau provenant de cuves (54, 55) distinctes sont apportés au récipient (20) et
    en ce qu'un conduit en dépression est raccordé au récipient (20).
  8. Dispositif selon la revendication 7, caractérisé en ce que les tubulures de raccordement (30, 30a) débouchent dans le même sens dans l'espace intérieur (22) du récipient (fig. 2).
  9. Dispositif selon la revendication 7, caractérisé en ce que les tubulures de raccordement (30, 30b) débouchent en sens opposé dans l'espace intérieur (22) du récipient (fig. 4).
  10. Dispositif selon les revendications 8 ou 9, caractérisé en ce que les tubulures de raccordement (30, 30a ou 30, 30b) sont disposées aux deux extrémités d'un diamètre commun (D).
  11. Dispositif selon l'une des revendications 7 à 10, caractérisé en ce qu'au moins deux tubulures de raccordement (30, 30a, 30b) sensiblement parallèles l'une à l'autre sont prévues sur le récipient (20) et sont associées de préférence à un plan radial (E) commun.
  12. Dispositif selon la revendication 11, caractérisé en ce qu'en direction de l'axe (A) du récipient, les tubulures de raccordement (30, 30a, 30b) forment un angle d'inclinaison (w) avec le plan radial (E).
  13. Dispositif selon la revendication 12, caractérisé par un angle d'inclinaison (w) compris entre environ 10° et 45° et de préférence d'environ 15°.
  14. Dispositif selon les revendications 12 ou 13, caractérisé par des tubulures de raccordement (30, 30a, 30b) inclinées vers le bas par rapport à l'espace intérieur (22) du récipient.
  15. Dispositif selon l'une des revendications 7 à 14, caractérisé en ce que les tubulures de raccordement (30, 30a, 30b) débouchent dans l'espace intérieur (22) du récipient en étant légèrement décalées mutuellement en hauteur.
  16. Dispositif selon l'une des revendications 7 à 15, caractérisé en ce que le récipient (20) est doté à son extrémité non tournée vers la cuve de reprise (12, 12a) d'une tubulure de raccordement (28) pour un agent d'écoulement.
  17. Dispositif selon la revendication 16, caractérisé en ce que l'espace intérieur (15) de la cuve de reprise (12, 12a) est reliée dans sa cloche à au moins une perforation (23) du fond du récipient (20).
  18. Dispositif selon l'une des revendications 7 à 17, caractérisé en ce que le conduit (40, 40a) relie l'organe d'extraction (17) de la cuve de reprise (12, 12a) à une tubulure de raccordement (30, 30a, 30b).
  19. Dispositif selon l'une des revendications 7 à 18, caractérisé en ce qu'un conduit de dérivation (42, 42a) est raccordé au conduit (40, 40a).
  20. Dispositif selon la revendication 19, caractérisé en ce que le conduit de dérivation (42, 42a) est relié à son autre extrémité à une cuve (54, 55) qui contient l'un des matériaux pulvérulents (P, Q) (fig. 3).
EP05715997A 2004-03-15 2005-03-11 Procede et dispositif de traitement pneumatique de substances pulverulentes Active EP1742725B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004012772 2004-03-15
DE102004021612A DE102004021612A1 (de) 2004-03-15 2004-05-03 Verfahren und Vorrichtung zum pneumatischen Behandeln pulverförmiger Stoffe
PCT/EP2005/002643 WO2005092485A2 (fr) 2004-03-15 2005-03-11 Procede et dispositif de traitement pneumatique de substances pulverulentes

Publications (2)

Publication Number Publication Date
EP1742725A2 EP1742725A2 (fr) 2007-01-17
EP1742725B1 true EP1742725B1 (fr) 2011-01-19

Family

ID=34962922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05715997A Active EP1742725B1 (fr) 2004-03-15 2005-03-11 Procede et dispositif de traitement pneumatique de substances pulverulentes

Country Status (6)

Country Link
US (1) US8834011B2 (fr)
EP (1) EP1742725B1 (fr)
CN (1) CN101421028B (fr)
AT (1) ATE495815T1 (fr)
DE (2) DE102004021612A1 (fr)
WO (1) WO2005092485A2 (fr)

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DE102004021612A1 (de) * 2004-03-15 2005-10-06 Dietrich Engineering Consultants S.A. Verfahren und Vorrichtung zum pneumatischen Behandeln pulverförmiger Stoffe
US7794135B2 (en) * 2004-11-05 2010-09-14 Schlumberger Technology Corporation Dry polymer hydration apparatus and methods of use
US20100271902A1 (en) * 2006-03-16 2010-10-28 Murphy Braden Apparatus and method for premixing lost circulation material
US20080062812A1 (en) * 2006-03-16 2008-03-13 Murphy Braden Apparatus and method for premixing lost circulation material
CN101628666B (zh) * 2009-08-12 2012-09-05 天津市实达电力设备有限公司 高效节能物料浓相气力输送系统
CN102205213A (zh) * 2011-05-26 2011-10-05 哈尔滨纳诺医药化工设备有限公司 一种物料混合机
CN203183362U (zh) * 2012-11-29 2013-09-11 杨旭梅 一种固体颗粒灭菌设备
CN105363361A (zh) * 2014-08-29 2016-03-02 北京长峰金鼎科技有限公司 一种循环混合机
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WO2005092485A3 (fr) 2008-12-18
CN101421028B (zh) 2016-01-20
US20080037364A1 (en) 2008-02-14
CN101421028A (zh) 2009-04-29
ATE495815T1 (de) 2011-02-15
DE502005010880D1 (de) 2011-03-03
DE102004021612A1 (de) 2005-10-06
EP1742725A2 (fr) 2007-01-17
WO2005092485A2 (fr) 2005-10-06
US8834011B2 (en) 2014-09-16

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