EP2673075B1 - Dispositif de traitement en continu d'au moins une matiere premiere, installation de traitement et utilisation d'un tel dispositif - Google Patents

Dispositif de traitement en continu d'au moins une matiere premiere, installation de traitement et utilisation d'un tel dispositif Download PDF

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Publication number
EP2673075B1
EP2673075B1 EP12703785.1A EP12703785A EP2673075B1 EP 2673075 B1 EP2673075 B1 EP 2673075B1 EP 12703785 A EP12703785 A EP 12703785A EP 2673075 B1 EP2673075 B1 EP 2673075B1
Authority
EP
European Patent Office
Prior art keywords
mixing
raw material
solid
vat
screw
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.)
Active
Application number
EP12703785.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2673075A1 (fr
Inventor
Daniel Durand
Jérôme MOTTAZ
Luis Asensio
Didier SALQUES
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.)
Clextral SAS
Original Assignee
Clextral SAS
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
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Publication of EP2673075A1 publication Critical patent/EP2673075A1/fr
Application granted granted Critical
Publication of EP2673075B1 publication Critical patent/EP2673075B1/fr
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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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to the rotating axis
    • 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
    • B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
    • B01F27/2322—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes with parallel axes
    • 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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
    • 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
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • 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
    • B01F27/70—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
    • 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
    • B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
    • B01F27/725—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in respective separate casings, e.g. one casing inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • B01F33/824—Combinations of dissimilar mixers mixing simultaneously in two or more mixing receptacles
    • 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
    • B01F35/75—Discharge mechanisms
    • B01F35/752—Discharge mechanisms with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it
    • 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
    • B01F23/30—Mixing gases with solids
    • 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
    • B01F23/50—Mixing liquids with solids

Definitions

  • the present invention relates to a device for the continuous treatment of at least one food or non-food raw material, and more particularly the treatment of solid-liquid mixtures, such as, for example, particulate and / or pulverulent media with aqueous or organic media. , or solid-gas mixtures, as well as solid-liquid-gas mixtures.
  • solid-liquid mixtures such as, for example, particulate and / or pulverulent media with aqueous or organic media.
  • solid-gas mixtures as well as solid-liquid-gas mixtures.
  • the solids are for example particles, grains, flakes, flours or other, but also fragmented lignocellulosic products for mixing and impregnation under temperature control.
  • the treatment of this type of raw material consists for example of mixing and / or preheating, and / or hydration, and / or precooking and / or cooking of the raw material.
  • This kind of treatment is carried out for example in a device comprising an elongated tank, single or double wall and can be pressurized or not.
  • This tank determines a mixing chamber comprising, respectively at opposite ends of the tank, at least one inlet of the raw material and at least one outlet of the treated material.
  • the tank contains, between the inlet port and the outlet port, one or two parallel shafts provided with blades that are generally separate and tilting. These blades are intended for agitating the raw material and by their inclination to carry out mixing and to advance this material from the inlet orifice to the outlet orifice.
  • the tank may include orifices or injectors of liquid, such as water or oil or any other liquid, or steam for heating and moistening the raw material.
  • EP-A-0 264 069 which can be regarded as the state of the art closest to the object of appended claim 1 and on which the preamble of claim 1 is based, provides an example of such a continuous treatment tank, see also the document US 3403824 A1 .
  • the intensity of the mixing and the rate of filling in the tank are adjusted by the inclination of the blades moving in the mixing chamber and the speed of rotation of the shafts.
  • the orientation of the blades can be positive if turning them, tend to advance the material of the inlet port to the outlet and the orientation of these blades can be negative if, on the contrary, the blades tend to retard the material in its progression inside the mixing chamber.
  • This poor filling rate causes a bad exchange between the steam, the liquids and the raw material so that the efficiency of the device is not excellent.
  • the efficiency of the treatment device is adjusted by the mechanical modification of the orientation of the blades of the trees.
  • This adjustment blade by blade is a long and tedious operation based on the expertise of the speaker and it imposes a stop of the device and a complete cleaning thus leading to each setting a significant loss of production.
  • the compromise of the orientation of the blades in the negative sense and in the positive direction to ensure a sufficient treatment of the raw material does not allow a fast and effective self-emptying of the device and requires a human intervention of heavy cleaning at each change of formulation or production.
  • the object of the invention is to propose a continuous pretreatment device for a raw material which avoids these drawbacks and which makes it possible to improve the yield.
  • the subject of the invention is therefore a device for the continuous treatment of a raw material formed of solid-liquid or solid-gas or solid-liquid-gas mixtures, as defined in claim 1.
  • the invention also relates to a treatment installation, as defined in claim 12.
  • the invention further relates to uses of the aforementioned treatment device as defined in claims 13 to 16.
  • a continuous treatment device 10 of a raw material consisting of a raw material food or non-food, and for example solid-liquid mixtures, solid-gas mixtures or solid-liquid-gas mixtures.
  • the device 10 can be more generally used for continuously treating and / or conditioning at least one product mixture in two different states among solid, liquid and gaseous states.
  • the device 10 comprises a tank 11 of elongate shape and determining a mixing chamber 15 having, at a first end, at least one inlet port 12 of the raw material and, at a second end, an outlet port 13 of the treated matter.
  • material introduced into the mixing chamber 15 through the inlet port 12, runs through this mixing chamber from one of its ends to its opposite end along the tank, where it exits the mixing chamber through the outlet orifice 13.
  • the mixing chamber 15 of the tank 11 contains at least one agitator shaft 16 provided with blades 17.
  • the blades 17 of the shafts 16 allow to stir the raw material so as to continuously mix it while advancing from the inlet port 12 to the outlet port 13.
  • the mixing chamber 15 contains two parallel agitating shafts 16 each provided with blades 17.
  • Each shaft 16 is driven by an electric motor 18 placed outside the tank 11.
  • the tank 11 is constituted by a tube-shaped eight, as shown in the figure 2 .
  • the two shafts 16 are provided to achieve a dispersive axial mixing of the material between the inlet orifice 12 and the outlet orifice 13: in this case, as indicated in FIG. figure 2 , the shafts 16 are, in use, driven in respective opposite directions of rotation and at least some of their respective blades 17 have a radial dimension strictly greater than half the distance between the shafts 16, ie half of their center distance. In this way, the material situated approximately halfway between the shafts 16 is agitated both by blades 17 of one of the shafts in a direction peripheral to this shaft and by blades 17 of the other shaft in a direction peripheral to the latter, of opposite direction.
  • this tank has the shape of a single tube.
  • the tank 11 comprises a single or double wall and this tank 11 may be pressurized or not.
  • the blades 17 comprise a triangle-shaped end 17a and the positioning of these blades 17 is made so as to have a surface covering allowing a good dispersive mixing and autoraclage of the wall of the tank 11.
  • the vessel 11 comprises a vent 19 and at least one liquid injection orifice 20, such as, for example, water, oil or any other liquid and / or gas, such as steam for example, to heat and moisten the raw material.
  • liquid injection orifice 20 such as, for example, water, oil or any other liquid and / or gas, such as steam for example, to heat and moisten the raw material.
  • the treatment device 10 also comprises a bottom mixing screw 25, in other words arranged in the mixing chamber 15, at the bottom thereof, as clearly visible on the Figures 1 and 2 .
  • This mixing screw 25 is rotated by an electric motor 26 disposed outside the tank 11.
  • the mixing screw 25 is designed to be rotated at least in opposition to the advancement of the feed material.
  • This mixing screw 25 is disposed below and parallel to the shafts 16 and extends substantially between the orifices 12 and 12 respectively.
  • the processing device 10 also comprises a complementary screw 30 with a double direction of rotation disposed below the outlet orifice 13 of the tank 11 and extending perpendicularly to the screw
  • the complementary screw 30 is disposed in a sleeve 31 which comprises substantially below the outlet 13 of the vessel 11, a dump valve 32 which can be opened or closed, as will be seen later.
  • the complementary screw 30 makes it possible to transfer the pretreated material from the outlet orifice 13 of the tank 11 to a subsequent processing machine, not shown.
  • This complementary screw 30 is rotated in both directions by an electric motor 33 ( figure 2 ).
  • This further processing machine is formed by an extrusion machine with one or more screws or by a cooker or a reactor or by any other suitable machine.
  • the raw material is introduced through the inlet orifice 12 inside the tank 11 and this raw material is mixed with the various ingredients introduced into the mixing chamber 15, by the blades 17 driven in rotation by the shafts 16 The raw material during its mixing progresses progressively towards the outlet orifice 13.
  • the mixing screw 25 is rotated by the motor 26 to push the raw material upstream of the processing device 10, that is to say towards the inlet port 12 , in the opposite direction of the advance of this raw material from the inlet orifice 12 to the outlet orifice 13.
  • the driving of the mixing screw 25 in the opposite direction makes it possible to adjust the treatment of the raw material more efficiently and more flexibly according to the raw materials to be treated.
  • the action of this mixing screw 25 which, by its counter-current effect and as a function of its speed of rotation, slows the flow of the raw material and by turbulence effect makes it possible to increase the filling rate in the tank 11 and thus to have a regulating action on the residence time of the raw material in the mixing chamber 15 of the tank 11.
  • This action for regulating the residence time of the material in the mixing chamber 15 is particularly remarkable in the case where, in the presence of the two shafts 16 provided to achieve the dispersive axial mixing of the material, the mixing screw 25 is located substantially midway between these two shafts, as shown in FIG. figure 2 In this case, the mixing screw 25 makes it possible to combine the dispersive axial mixture, which homogenizes the material in time and in space, with a radial mixture which limits or even makes negligible the residence time differences of the material in the mixing chamber 15.
  • the mixing screw 25 constitutes an additional and accessible adjustment means without stopping the processing device which is obtained by varying the speed of this mixing screw 25, thereby making it possible to adjust the operating parameters without loss of time. nor of raw material. Consequently, adjusting the inclination of the blades 17 of each shaft 16 is no longer an indispensable adjustment element and does not need to be modified for each treated material.
  • the tank 11 of the treatment device 10 is optionally connected to a cleaning system, not shown, and the mixing screw 25 is driven in a reverse direction of rotation so that the mixing screw 25 pushes the material of the inlet port 12 towards the outlet 13 of the tank 11.
  • This arrangement makes it possible to easily evacuate the material contained in the treatment device 10, which saves time for cleaning. tank.
  • the complementary screw 30 is rotated by the motor 33 in the positive direction so as to transfer the pretreated material leaving the outlet orifice 13 of the tank 11 to the extrusion machine in the direction indicated by the arrow F1 on the figure 2 , the emptying valve 32 being in the closed position.
  • the complementary screw 30 is rotated in the negative direction so as to discharge in the direction of the arrow F2 the solid or liquid residues contained in the tank 11, the drain valve 32 being in the open position .
  • the device can be coupled with an automated cleaning system to improve the conditions of production and hygiene, especially during the material change phases and / or stopping phases.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP12703785.1A 2011-02-09 2012-02-08 Dispositif de traitement en continu d'au moins une matiere premiere, installation de traitement et utilisation d'un tel dispositif Active EP2673075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1151017A FR2971170B1 (fr) 2011-02-09 2011-02-09 Dispositif de traitement en continu d'au moins une matiere premiere
PCT/EP2012/052133 WO2012107491A1 (fr) 2011-02-09 2012-02-08 Dispositif de traitement en continu d'au moins une matiere premiere, installation de traitement et utilisation d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP2673075A1 EP2673075A1 (fr) 2013-12-18
EP2673075B1 true EP2673075B1 (fr) 2015-06-10

Family

ID=44475021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12703785.1A Active EP2673075B1 (fr) 2011-02-09 2012-02-08 Dispositif de traitement en continu d'au moins une matiere premiere, installation de traitement et utilisation d'un tel dispositif

Country Status (6)

Country Link
US (1) US9675945B2 (es)
EP (1) EP2673075B1 (es)
CL (1) CL2013002306A1 (es)
DK (1) DK2673075T3 (es)
FR (1) FR2971170B1 (es)
WO (1) WO2012107491A1 (es)

Cited By (1)

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CN105536593A (zh) * 2015-12-24 2016-05-04 苏州北开生化设备有限公司 一种应用于实验室的小型强制混合搅拌机及其工作方法

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CN106732145A (zh) * 2017-01-12 2017-05-31 朴春秀 一种鱼饵料搅拌混合装置
CN110354711A (zh) * 2019-07-12 2019-10-22 安徽诚宇新材料科技有限公司 一种一次性环保塑料杯原料混合装置
CN110773024A (zh) * 2019-11-07 2020-02-11 安徽持家汉家居工艺品有限公司 一种用于生产包装绳的原料搅拌装置
CN114073902B (zh) * 2020-08-06 2023-07-21 常州美择新材料科技有限公司 一种超细粉体精准自动加料装置
CN112138594A (zh) * 2020-09-09 2020-12-29 南宁学院 一种陶瓷原料搅拌装置
CN113262690B (zh) * 2021-05-18 2022-07-12 南通江海电容器股份有限公司 一种缩短混料时长的浆料混料方法及装置
CN114225739B (zh) * 2021-12-19 2022-08-30 湖南安固仕新材料有限公司 一种具有环保型和抗裂性腻子膏的生产工艺

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Also Published As

Publication number Publication date
FR2971170A1 (fr) 2012-08-10
FR2971170B1 (fr) 2014-07-04
US9675945B2 (en) 2017-06-13
EP2673075A1 (fr) 2013-12-18
WO2012107491A1 (fr) 2012-08-16
CL2013002306A1 (es) 2014-02-21
DK2673075T3 (en) 2015-06-29
US20130308412A1 (en) 2013-11-21

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