EP4122590A1 - Préconditionneur destiné à être utilisé dans un laboratoire ou une ferme expérimentale, en particulier pour traiter des aliments secs destinés à l'alimentation humaine ou animale - Google Patents

Préconditionneur destiné à être utilisé dans un laboratoire ou une ferme expérimentale, en particulier pour traiter des aliments secs destinés à l'alimentation humaine ou animale Download PDF

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Publication number
EP4122590A1
EP4122590A1 EP22185926.7A EP22185926A EP4122590A1 EP 4122590 A1 EP4122590 A1 EP 4122590A1 EP 22185926 A EP22185926 A EP 22185926A EP 4122590 A1 EP4122590 A1 EP 4122590A1
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
preconditioner
shaft
nozzle
water
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Withdrawn
Application number
EP22185926.7A
Other languages
German (de)
English (en)
Inventor
Prof. Dr. Uwe GRUPA
Johannes Schmitt
Carl DOLGOW
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hochschule Fulda
Original Assignee
Hochschule Fulda
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hochschule Fulda filed Critical Hochschule Fulda
Publication of EP4122590A1 publication Critical patent/EP4122590A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B01F27/62—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying means
    • 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
    • B01F27/625—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis the receptacle being divided into compartments, e.g. with porous divisions
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2115—Temperature
    • 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
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/412—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting both extremities of the shaft
    • B01F35/4122—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting both extremities of the shaft at the side walls of the receptacle
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B01F2101/18—Mixing animal food ingredients
    • 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
    • B01F2215/0409—Relationships between different variables defining features or parameters of the apparatus or process
    • 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
    • B01F2215/0431—Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof

Definitions

  • the invention relates to a preconditioner for laboratory or experimental operation, in particular for treating dry food or feed, comprising a housing with a mixing chamber, the quotient of the length of the mixing chamber and the inside diameter of the clear cross section of the mixing chamber being between 12 and 15 .
  • the invention has variable design options for the process length and dosing positions.
  • the conditioning of e.g. food and feed serves to hydrate the raw material mixture and/or to introduce thermal energy, e.g. in the form of steam, into the product.
  • a preconditioner is intended to achieve the best quality and improved bioavailability of food and feed.
  • the treatment serves to prepare for subsequent process steps, such as pelleting using an extruder downstream of the preconditioner.
  • a preconditioner can be used to achieve an effective and at the same time cost-effective mixing and heat treatment of such foodstuffs and feedstuffs.
  • Prior art industrial preconditioners are designed for throughput. This means that they have comparatively large dimensions, i.e. relatively large-volume mixing chambers in order to treat as much material as possible in the shortest possible time. Mass flows of 0.3 to 30 tons per hour are common. However, it is problematic if the production of new products is to be tested on such systems. Correspondingly large test quantities of food and feed to be treated are then necessary. In the tests on these industrial plants, the corresponding process parameters often have to be tested and adjusted for the new product. This usually requires several test runs with correspondingly large quantities of raw material. This means that a lot of waste is produced in the test operation, which then has to be disposed of as waste. Setting up, starting up and shutting down as well as cleaning such industrial plants also involves considerable effort.
  • the present invention relates to the objects mentioned at the outset.
  • dosing opening when, according to the invention, dosing opening is mentioned, this also means a feed for additives to the mixing chamber of the preconditioner.
  • a preconditioner for laboratory or experimental operation in particular for treating dry food or feed, comprising a housing with a mixing chamber, the quotient of the length of the mixing chamber and the inside diameter of the clear cross section of the Mixing chamber between 12 and 15, preferably between 13 and 14 and more preferably between 13.5 and 13.8 is dissolved.
  • Preferred embodiments of the invention are specified in the dependent claims, which can optionally be combined with one another.
  • the inventors have recognized that a skilful choice of the quotient of the length of the mixing chamber and the inside diameter of the clear cross section of the mixing chamber results in particularly optimal treatment, above all thorough mixing of the material treated in the preconditioner. On the other hand, it and its individual parts are particularly easy to handle, e.g. when cleaning.
  • the stated quotient is between 12 and 15, preferably between 13 and 14 and particularly preferably between 13.5 and 13.8.
  • the length of the mixing chamber can be between 90 and 120 cm and preferably between 90 and 100 cm, with the inside diameter of the clear cross-section being between 6 and 10 cm, preferably between 6 and 8 cm.
  • the mixing chamber preferably comprises at least three connections for water or steam in combination with a dosing opening for solids to feed the same to the mixing chamber, wherein the connections can be arranged at the periphery, preferably at the top of the mixing chamber.
  • a nozzle can be connected to the connection in order to supply water to the mixing chamber, with the nozzle being designed as an atomizer nozzle, such as a two-component nozzle, in order to supply water to the mixing chamber using atomizer air, with the nozzle preferably being set up in such a way that the mixing chamber has 5 to 80 g of water per liter, preferably 10 to 50 g of water per liter of the volume of the mixing chamber can be supplied.
  • a quantity sensor such as a flow meter, can be connected upstream of the connection in order to detect or set the quantity of water or steam supplied to the mixing chamber. Such low amounts of water can only be supplied to the mixing chamber with such a nozzle and such a flow rate meter.
  • the preconditioner is set up according to the invention in such a way that it can in principle be operated on a laboratory bench.
  • the dwell time is between 300 and 800 seconds when the process length (position 14) is fully utilized, at the dosing opening 17 between 240 and 470 seconds and at the dosing opening 18 at 170 and 400 seconds.
  • the bulk density of the material to be treated is between 300 and 800 g/l, preferably between 400 and 600 g/l.
  • the mixing chamber is filled to a maximum of one third, so that the material quantities in the mixing chamber range from 1 to 3 kg. If the process length is shortened, a cut-off disc can be attached to the mixing and conveying screw. This prevents the sample material from being pushed back into the rear space and the uncontrolled escape of steam. About 5 to 15 kg of material per hour can be treated in such a preconditioner.
  • the amount of water vapor to be supplied to the mixing chamber can be 10 to 50 percent by weight, preferably 20 to 40 percent by weight, and the water content to be supplied can be 5 to 80 percent by weight, preferably 15 to 40 percent by weight of the material.
  • the mixing chamber can be essentially cylindrical on the inside, so that inexpensive round material can be used for the preconditioner.
  • a shaft is preferably arranged in the mixing chamber, with a multiplicity of paddles arranged on the circumference of the shaft.
  • paddles which serve as mixer or conveyor screws, are inexpensive to produce and optimally convey and mix the material added to the mixing chamber.
  • the shaft can be mounted at each of its axial ends by means of radial bearings, the radial bearings being supported directly or indirectly on the housing and preferably being accommodated in openings in the housing.
  • a simple, cost-effective construction of the preconditioner can also be specified in which wearing parts, such as the radial bearings, can be easily replaced.
  • the shaft can be driven in rotation via a drive assigned to the preconditioner, with a controller being assigned to the drive, by means of which the speed of the shaft can be adjusted in order to keep the food or feed in the mixing chamber between 300 and 800 seconds at the dosing opening 17 between 240 and 470 seconds and at the dosing opening 18 at 170 and 400 seconds. It has been shown that these are the optimal process parameters.
  • a sensor for recording the temperature in the mixing chamber or the housing can be assigned to it.
  • FIGS 1a and 1b show a preconditioner 1 according to the invention in a highly schematic and therefore not to scale side view.
  • This comprises a housing 2 in which a mixing chamber 3 is accommodated.
  • the preconditioner 1 has a plurality of feeds 14, 17, 18 in order to feed the material to be treated, such as food or feed, to the mixing chamber 3 and a discharge 15 in order to discharge the material from this again after it has been treated.
  • the feed 14 and the discharge 15 are arranged on the circumference of the housing 2 .
  • a shaft 4 (see 2 ) arranged. This comprises a multiplicity of paddles 5 arranged on the circumference of the shaft 4.
  • the shaft 4 can be driven by means of a drive 7, to which a controller 8 is assigned for setting its speed.
  • a controller 8 is assigned for setting its speed.
  • the material supplied to the mixing chamber 3 via the feed 14 is mixed along the length L of the mixing chamber by the rotationally driven shaft 4 and the paddle 5 and discharged from the latter again via the discharge 15 .
  • a cutting disc 19 (see Fig 3 ) to be attached. This separates the mixing chamber 3 into two separate chambers that are separate from one another. With this, the L/D ratio according to the invention for the mixing and conveying screw, ie the shaft 4 equipped with paddles 5, can be adjusted. In this way, the dwell time of the raw material in the mixing chamber 3 can be controlled in a more targeted manner.
  • the separating disc 19 prevents the sample material (raw material possibly with other additives) from being pressed back into the second chamber (rear space) and the uncontrolled escape of steam from it.
  • the shaft 4 can be mounted at both of its axial ends in or on the housing 2 by means of radial bearings 6 .
  • connections 9, 10 for water and steam are distributed around the circumference of the housing between the feed 14 and the discharge 15. Connections 9 are for steam and connection 10 is for water.
  • the connections 10 for water connect directly to the single supply 14 ( Fig. 1a ) and the three feeders 14, 17 and 18 ( Fig. 1b ) on.
  • a nozzle 11 for water is connected as well as a quantity sensor 12.
  • the quantity sensor 12 such as a flow meter and then the nozzle 11
  • the nozzle 11 flows through first, before the water flows through the connection 10 into the Mixing chamber 3 is reached, for example, by nebulization.
  • the nozzle 11 is preferably designed as a two-component nozzle, wherein it has a compressed air connection (not shown) in order to supply atomizing air to the nozzle 11 .
  • connection 9 for steam can also be preceded by a corresponding quantity sensor 12 for adjusting the quantity of steam to be fed into the mixing chamber 3, although this is only shown for one connection 9 .
  • the material within the mixing chamber 3 can be warmed up or heated by means of the steam supply via the connections 9 . Alternatively or additionally, an electric heater would also be conceivable in order to supply thermal energy to the material along the mixing chamber 3 .
  • Fig. 1b serve as a chimney in order to dissipate thermal energy in the form of steam from the preconditioner 1 at an early stage.
  • a sensor 13 for recording the temperature in the mixing chamber 3 or that of the housing 2 is assigned to the central connection 9 for steam.
  • Another sensor 13 can also be arranged in the area of the drop 15 .
  • the sensors 13 are intended to detect the temperature of the material to be treated in the mixing chamber 3 .
  • the preconditioner 1 is dimensioned according to the invention such that the quotient of the length L of the mixing chamber 3 and the inner diameter of the clear cross section D of the mixing chamber 3 is between 12 and 15, preferably between 13 and 14 and particularly preferably between 13.5 and 13.8 lies.
  • the preconditioner 1 can thus be dimensioned so small that it fits on a laboratory bench, but at the same time includes all the functions of a corresponding industrial plant.
  • Preconditioner 1 With one provided for laboratory or test operation Preconditioner 1 comparatively small test quantities of food and feedstuffs to be treated can be processed. In the test operation, there is comparatively much less waste that has to be disposed of as waste.
  • the set-up, start-up and shut-down as well as the cleaning of such a pre-conditioner also involves significantly less effort than is the case with industrial systems.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP22185926.7A 2021-07-22 2022-07-20 Préconditionneur destiné à être utilisé dans un laboratoire ou une ferme expérimentale, en particulier pour traiter des aliments secs destinés à l'alimentation humaine ou animale Withdrawn EP4122590A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021119066.5A DE102021119066A1 (de) 2021-07-22 2021-07-22 Vorkonditionierer für den labor- oder versuchsbetrieb,insbesondere zum behandeln von trockenen lebens- oder futtermitteln

Publications (1)

Publication Number Publication Date
EP4122590A1 true EP4122590A1 (fr) 2023-01-25

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EP22185926.7A Withdrawn EP4122590A1 (fr) 2021-07-22 2022-07-20 Préconditionneur destiné à être utilisé dans un laboratoire ou une ferme expérimentale, en particulier pour traiter des aliments secs destinés à l'alimentation humaine ou animale

Country Status (2)

Country Link
EP (1) EP4122590A1 (fr)
DE (1) DE102021119066A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049071A2 (fr) * 1999-02-19 2000-08-24 Equistar Chemicals, Lp Particules polymeres enrobees possedant des caracteristiques ameliorees de resistance a l'adherence et procedes de fabrication de ces particules ainsi qu'appareil correspondant
WO2009047013A2 (fr) * 2007-10-12 2009-04-16 Bayer Cropscience Ag Procédé de fabrication de pâtes transparentes par extrusion
US20110086130A1 (en) * 2009-10-09 2011-04-14 Axelrod Glen S Continuous Production Of Edible Food Products With Selected Shapes
EP2930172A1 (fr) * 2012-12-04 2015-10-14 Suzhou Tianma Specialty Chemicals Co., Ltd. Dispositif et procédé de préparation en continu d'un akd de grande pureté sans solvant
WO2021222049A1 (fr) * 2020-05-01 2021-11-04 Merck Sharp & Dohme Corp. Mélangeur modulaire et son procédé d'utilisation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004026400D1 (de) 2004-02-24 2010-05-20 Lafarge Platres Verfahren und Vorrichtung zur Herstellung eines hydraulisch abgebundenen Porenkörpers
US11224990B2 (en) 2016-08-05 2022-01-18 United States Gypsum Company Continuous methods of making fiber reinforced concrete panels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049071A2 (fr) * 1999-02-19 2000-08-24 Equistar Chemicals, Lp Particules polymeres enrobees possedant des caracteristiques ameliorees de resistance a l'adherence et procedes de fabrication de ces particules ainsi qu'appareil correspondant
WO2009047013A2 (fr) * 2007-10-12 2009-04-16 Bayer Cropscience Ag Procédé de fabrication de pâtes transparentes par extrusion
US20110086130A1 (en) * 2009-10-09 2011-04-14 Axelrod Glen S Continuous Production Of Edible Food Products With Selected Shapes
EP2930172A1 (fr) * 2012-12-04 2015-10-14 Suzhou Tianma Specialty Chemicals Co., Ltd. Dispositif et procédé de préparation en continu d'un akd de grande pureté sans solvant
WO2021222049A1 (fr) * 2020-05-01 2021-11-04 Merck Sharp & Dohme Corp. Mélangeur modulaire et son procédé d'utilisation

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