EP3120092A1 - Trocknungsanlage mit mehreren ortsfesten kammern - Google Patents
Trocknungsanlage mit mehreren ortsfesten kammernInfo
- Publication number
- EP3120092A1 EP3120092A1 EP15711712.8A EP15711712A EP3120092A1 EP 3120092 A1 EP3120092 A1 EP 3120092A1 EP 15711712 A EP15711712 A EP 15711712A EP 3120092 A1 EP3120092 A1 EP 3120092A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- air
- granules
- chambers
- leads
- 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.)
- Withdrawn
Links
- 238000001035 drying Methods 0.000 title claims abstract description 163
- 238000009434 installation Methods 0.000 title abstract description 3
- 239000008187 granular material Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/082—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed arrangements of devices for distributing fluidising gas, e.g. grids, nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
Definitions
- the invention relates to a drying plant according to the preamble of claim 1.
- Such a drying plant is known from EP 2 134 458 B1.
- the several drying chambers are mounted movably about a common axis of rotation. It is provided a single feed line leading to a filling position. Depending on the rotational position of the drying chambers is in each case a drying chamber in this filling position and can be filled through the feed line with granules to be dried.
- the arrangement of these multiple drying chambers may be referred to as a drying drum.
- this drying chamber which now contains dried granules, occupies a discharge position; in this, the drying chamber is opened and emptied.
- each drying chamber is gradually filled in batches and are accordingly emptied gradually after the required drying time, each passes a quantity of dried granules in a material discharge and successively from each of the drying chamber, which is located at the emptying position, so that ultimately the material discharge device in almost continuous manner dried granules can be promoted to downstream equipment.
- the invention has for its object to improve a generic drying plant to the effect that this allows a quasi-continuous drying of pharmaceutical granules while allowing compliance with the highest standards of hygiene.
- the invention proposes to arrange the drying chambers non-rotatable, in the manner of a drying drum, but rather to mount them in a stationary manner.
- the drying chambers can be arranged in a straight line one behind the other or next to each other or also, as in the generic drying plant in a ring shape.
- it is essential that the drying chambers are mounted in a fixed position and not successively to filling positions or emptying. be moved in each case a connection to a feed line or to a Materialaustragsvorraum and then this connection is disconnected again.
- each of the drying chambers each have their own feed line.
- the drying system can be operated as a closed system, since the several provided feed lines can each remain connected to their associated drying chamber , A sealing problem or the risk at the junction between the feed line and the drying chamber Granulatreste, for example, to lose toxic granules and contaminate the environment of the drying plant so is avoided in this way.
- a transfer of the contents of a drying chamber in an adjacent drying chamber as it could otherwise result when a line passes over the narrow partition between two adjacent drying chambers and is open to both drying chambers, is thus avoided in a hygienically advantageous manner.
- each of the drying chambers is connected to a common material discharge device.
- the closed configuration of the drying plant is realized and also at the discharge opening of each drying chamber therefore occurs no problem of leakage, which could lead to contamination of the environment of the drying plant by the granules.
- the changeover valve is connected on the input side to the granulate source, for example to a storage bunker or the like, so that granules can always pass from this granulate source to the changeover valve.
- the changeover valve On the output side, the changeover valve has a plurality of outlets, namely at least as many as drying chambers are provided, so that from each outlet of the changeover valve, a feed line leads to the filling opening of a drying chamber.
- a main air flow is passed through a main air duct and directed into the respective drying chamber, while this main air represents the major portion of the drying air, a smaller proportion of the drying air as a so-called partial air flow through a Partial air duct led to the feed line, which leads to the currently selected drying chamber, ie to the drying chamber, which is currently charged with granules.
- the feed of the chamber is accelerated, namely the flow of the granular stream supported by the feed line.
- the switching valve can be configured as a ball valve and have a correspondingly spherical valve body.
- the outlets are arranged such that a rotation of the valve body gradually releases the individual outlets, so that accordingly the granules are fed successively to the different drying chambers.
- the outlets may lie on a common circular path, so that a continuous rotation of the ball valve in the same direction of rotation causes the individual drying chambers to be successively charged with granules from the first to the last drying chamber and after the last one
- Drying chamber again the first drying chamber is driven, that is charged with granules.
- the continuous rotation of the ball valve can be carried out optionally continuously or intermittently.
- B. sealing rings o. The like. Be provided by the surface of the valve body and / or the surface of the housing, where it rests against the valve body, made of plastic.
- valve body as a whole is made of plastic, so that it thus has a sealing effective surface made of plastic, which rests against the housing of the changeover valve.
- the housing of the switching valve may for example consist of metal, so that it is designed mechanically very robust and also allows an excellent friction pairing with the valve body, which moves within the housing, at the same time a good sealing effect between the existing plastic valve body and the possibly . can be made of metal existing housing.
- an extruder can be provided as granulate source.
- the term "extruder” refers to that device which produces the granulate. This may, for example, actually be an extruder or, for example, also a wet granulator, for example in the form of a twin-screw granulator.
- a storage bunker By dispensing with a storage bunker, therefore, the freshly produced granules can be conveyed directly from the extruder to the switching valve and from there to a respectively selected drying chamber.
- the waiver of a storage bunker is economically advantageous because the cost of the storage bunker omitted.
- the respective drying chamber as a fluidized bed chamber and to guide the drying air in a conventional manner through a perforated bottom up through the drying chamber, so that the granules in the drying chamber is present in a fluidized bed and intensively in an economically advantageous manner and can be dried evenly.
- the amount of air for the individual drying chambers can be controlled individually.
- This individual control can also be used, in particular, to supply different quantities of main air during one drying cycle of the same drying chamber.
- the main amount of air can always be set particularly high for that drying chamber, which is currently filled with fresh, so the comparatively wettest granules.
- the large quantity of main air assists the fluidization of this moist granulate and prevents it from becoming obstructed at the bottom of the drying chamber.
- the amount of main air can later be reduced, namely if the granules in this drying chamber have already been dried to such an extent that the risk of caking no longer exists.
- the partial air duct does not lead directly to a feed line, but rather to an upstream device.
- the drying system is therefore only a single partial air duct required.
- it may be provided to guide the partial air channel into the changeover valve, so that the granules, when entering the changeover valve, are conveyed by means of this partial air flow through the changeover valve and the downstream feed line.
- Particularly advantageous may be provided to lead the partial air duct to the extruder, for example in the extruder head, ie where the granules produced in the extruder exits the extruder, so that the granules produced in the extruder already with the drying air, namely the partial air flow, in contact and then by means of the partial air flow into the switching valve, through the adjoining feed line and into the selected drying chamber.
- the common material discharge device provided for all drying chambers can be designed as an air conveying device.
- the dried granules, which after the drying cycle from a drying chamber enters this material discharge device, is not transported in this embodiment as an air conveyor by means of mechanical conveying elements, but by an air flow.
- the Materialaustragsvoriques is therefore free of entrainment, a built-in screw o. The like., So that the addition of material is avoided in this regard.
- a particularly simple cleaning of the material discharge device is made possible because it has no interference contours in its interior, and because they are particularly easy to seal can, for example, by a disc valve, which is the limit of the drying plant, so that a CIP cleaning can be carried out particularly easily and, as a result, with little effort, the proposed designed drying system can meet high hygienic standards.
- the air flow of the material discharge device can also contribute a final share to the drying effect.
- FIG. 1 shows a vertical section through a drying chamber and connected thereto further facilities of a drying plant
- Fig. 2 a plurality of juxtaposed drying chambers, as shown in Fig. 1, with a first Materialaustragsvorraum, and
- Fig. 3 is a view similar to FIG. 2, but with a second
- 1 denotes a respective drying chamber, wherein a plurality of drying chambers, as shown in FIGS. 2 and 3, are connected together to form a drying plant 2, which comprises a total of four drying chambers 1.
- Each drying chamber 1 has a perforated bottom 3 and below it an air inlet 4, so that filtered and heated drying air can enter the drying chamber 1 through the air inlet 4 and flow upwards.
- an emptying opening 5 is provided in each drying chamber 1, wherein each emptying opening 5 can be selectively opened or closed by means of a pivotable emptying flap 6.
- Granules enter the drying chamber 1 through a feed line 7, which opens into the wall of the drying chamber 1 at a filling opening 8.
- a filter 9 is provided in each drying chamber 1 and the ascending drying air passes through the filter 9 in an air outlet 10th
- the granules now fall through the discharge opening 5 in a material discharge device, which is configured in the embodiment of FIG. 2 as a screw conveyor 1 1.
- the screw conveyor 1 1 extends under all the drying chambers 1, so that the granules, which from each of the four
- Draining openings 5 falls into the screw conveyor 1 1 passes and is transported through this to downstream facilities.
- the granules enter the screw conveyor 11, a quasi-continuous operation of the drying system 2 can be made possible by At the end of the screw conveyor 1 1, continuously dried granules are ready and can then be processed further.
- the material discharge device is designed as an air conveyor device 21.
- a pulse of air is impulsively introduced via an air inlet 22 in the Lucas purposeein- device 21 after granules have fallen through the discharge opening 5 in the material discharge and when the emptying flaps 6 are closed, so that the granules are conveyed out of the air conveying device 21 by the air blast.
- Measuring points 23 serve to monitor the product quality by being able to examine any amount of granules leaving a drying chamber 1, for example with regard to their degree of drying.
- a drainage 24 is provided, and still behind forms a disk valve 25, the device boundary of the drying plant. 2
- an extruder 12 is schematically indicated, in which the granules are produced. From the extruder 12, the granules pass into a switching valve, which is designed as a ball valve 14, and which has a metallic housing 15 and a spherical valve body 16 made of plastic.
- the valve body 16 is provided with an angled extending through hole 17.
- four outlets 18 are provided in the form of indicated nozzle, with each outlet 18 a feed line 7 connects, each extending to one of the four drying chambers 1. In FIG. 1, for reasons of clarity, the feed line 7 connected thereto is shown only at an outlet 18.
- the through hole 17 gradually passes to the four different outlets 18, so that accordingly succession of connections from the extruder 12 through the ball valve 14 to the four drying chambers 1 are created and in this way successively the four drying chambers 1 with fresh produced granules are filled.
- a partial air line 19 connects to the extruder 12, so that the freshly produced granules are conveyed by means of the This partial flow rate is supported in its flow behavior and is conveyed through the ball valve 14 and the feed line 7.
- the larger air flow of the drying air passes as a main air flow through a main air line 20 to the air inlet 4 and the rising air flow flowing through the drying chamber 1, tears the partial air flow and the granules therein in the region of the filling opening 8, so that a total as fast as possible filling the respectively selected drying chamber 1 is supported.
- a pulse-like air delivery can also be provided on the inlet side: Before the ball valve 14 is switched from one to the other outlet 18, a partial air flow through the partial air line 19, the Through hole 17 of the ball valve 14 and funded by the currently used feed line 7 and 8 filling.
- This pulse air blast serves to convey last material residues in the respective drying chamber 1 and thus to avoid any residues in the lines on the inlet side.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014103661.1A DE102014103661A1 (de) | 2014-03-18 | 2014-03-18 | Trocknungsanlage mit mehreren ortsfesten Kammern |
PCT/EP2015/055563 WO2015140169A1 (de) | 2014-03-18 | 2015-03-17 | Trocknungsanlage mit mehreren ortsfesten kammern |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3120092A1 true EP3120092A1 (de) | 2017-01-25 |
Family
ID=52727109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15711712.8A Withdrawn EP3120092A1 (de) | 2014-03-18 | 2015-03-17 | Trocknungsanlage mit mehreren ortsfesten kammern |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160265843A1 (de) |
EP (1) | EP3120092A1 (de) |
DE (2) | DE102014103661A1 (de) |
WO (1) | WO2015140169A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016218085A1 (de) | 2016-09-21 | 2018-03-22 | Robert Bosch Gmbh | Wirbelschichtanlage |
DE102018203600A1 (de) | 2018-03-09 | 2019-09-12 | Robert Bosch Gmbh | Verteilervorrichtung, Verfahren zum Führen von Stoffen und Verfahren zum Reinigen einer Verteilervorrichtung |
CN111923275A (zh) * | 2020-09-01 | 2020-11-13 | 无锡正佳自控系统股份有限公司 | 一种智能混合干燥机及其干燥方法 |
CN113028742B (zh) * | 2021-04-02 | 2022-10-11 | 北京长峰金鼎科技有限公司 | 一种流化床物料沸腾控制方式 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1292442A (en) * | 1968-10-18 | 1972-10-11 | Laporte Industries Ltd | Improvements in and relating to fluidised bed reactors |
CH686343A5 (de) * | 1992-02-13 | 1996-03-15 | Glatt Maschinen & Apparatebau | Verfahren und Einrichtung zur chargenweisen Behandlung eines teilchenfoermigen Gutes. |
WO2000066683A1 (en) * | 1999-05-04 | 2000-11-09 | Commonwealth Scientific And Industrial Research Organisation | Process for carbonizing wood residues and producing activated carbon |
WO2001063191A1 (de) * | 2000-02-25 | 2001-08-30 | Glatt Gmbh | Verfahren zur herstellung eines teilchenförmigen gutes |
US7908765B2 (en) * | 2006-12-22 | 2011-03-22 | Collette Nv | Continuous granulating and drying apparatus |
DE602008002570D1 (de) | 2007-02-27 | 2010-10-28 | Gea Pharma Systems Nv | Kontinuierlich arbeitende granulations- und trocknungsvorrichtung mit messeinheiten und verfahren zur kontinuierlichen granulation und trocknung |
-
2014
- 2014-03-18 DE DE102014103661.1A patent/DE102014103661A1/de not_active Withdrawn
- 2014-03-18 DE DE202014010332.1U patent/DE202014010332U1/de not_active Expired - Lifetime
-
2015
- 2015-03-17 WO PCT/EP2015/055563 patent/WO2015140169A1/de active Application Filing
- 2015-03-17 EP EP15711712.8A patent/EP3120092A1/de not_active Withdrawn
-
2016
- 2016-05-26 US US15/165,012 patent/US20160265843A1/en not_active Abandoned
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015140169A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20160265843A1 (en) | 2016-09-15 |
WO2015140169A1 (de) | 2015-09-24 |
DE102014103661A1 (de) | 2015-09-24 |
DE202014010332U1 (de) | 2015-05-20 |
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