WO2018137795A1 - Centrifugeuse, procédé d'extraction permettant de traiter un mélange et utilisation d'une centrifugeuse - Google Patents

Centrifugeuse, procédé d'extraction permettant de traiter un mélange et utilisation d'une centrifugeuse Download PDF

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Publication number
WO2018137795A1
WO2018137795A1 PCT/EP2017/071192 EP2017071192W WO2018137795A1 WO 2018137795 A1 WO2018137795 A1 WO 2018137795A1 EP 2017071192 W EP2017071192 W EP 2017071192W WO 2018137795 A1 WO2018137795 A1 WO 2018137795A1
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WO
WIPO (PCT)
Prior art keywords
centrifuge
drum
mixture
conveyor
ejection
Prior art date
Application number
PCT/EP2017/071192
Other languages
German (de)
English (en)
Inventor
Ernst Schaltegger
Nikolaus Foidl
Original Assignee
Ferrum Ag
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 Ferrum Ag filed Critical Ferrum Ag
Publication of WO2018137795A1 publication Critical patent/WO2018137795A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0203—Solvent extraction of solids with a supercritical fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0269—Solid material in other moving receptacles
    • B01D11/0273—Solid material in other moving receptacles in rotating drums
    • B01D11/0276—Solid material in other moving receptacles in rotating drums with the general transport direction of the solids parallel to the rotation axis of the conveyor, e.g. spirals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/12—Other accessories for centrifuges for drying or washing the separated solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/04—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/16—Sieves or filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/028—Flow sheets
    • B01D11/0284—Multistage extraction

Definitions

  • the invention relates to a centrifuge according to the preamble of
  • centrifuges in various embodiments are known and used in a variety of fields.
  • centrifuges for example, for drying very pure
  • Liquid, in particular in a solid cake, and a liquid phase of the solid cake peeled off for example by means of a peeling device of a drum shell or the drum wall and via suitable means, e.g. over a slide, to the outside of the
  • Centrifuges or pusher centrifuges used.
  • the pusher centrifuges depending on the requirement, one or more stages
  • centrifuges have long been well known to those skilled in the art and are e.g. in the standard work "industrial centrifuges", by Prof. W. Stahl, DRM PRESS, described in detail.
  • the reverse process, the impregnation can also take place.
  • a solid starting material is contacted with the impregnating material dissolved in supercritical CO2, whereby the impregnating substance penetrates into all the pores of the starting material.
  • Hop biomass a reactor necessary to use CO2 in the supercritical state, ie at a temperature of 31 ° C and a pressure of 72 bar.
  • the extraction system of DE 695 14 856 T2 is illustrated below with reference to FIG. 1 in the form of a diagram.
  • the tank 101 ' is a supply of liquid carbon dioxide.
  • the tank 101 ' is connected via suitable conduits and a liquid gas pump 102' to a heat exchanger 103 ', to which the CO2 is passed, where it is made supercritical with respect to temperature and pressure.
  • the resulting supercritical extraction fluid is allowed to flow into a reactor 104 'of conventional design having a heating jacket (not shown) and filter plates (not shown) as carriers for the hops.
  • the supercritical CO2 is allowed to flow through the hop where it exerts its extraction function and extracts an extractant by essentially taking up the resin and essential oils.
  • Extraction fluid flows through a throttle valve 105 'into a precipitation vessel 106'.
  • the vessel 106 ' has a vessel jacket (not shown) for heating or cooling.
  • the pressure in the vessel 106 ' is below the critical pressure, while the temperature may be above or below the critical pressure
  • Hop extract is removed from the vessel 106 'and sent to a catch tank 107' where the extract is heated until it becomes a fluid.
  • Hop extract fluid is then withdrawn from catch tank 107 'and into the upper portion of liquid CO2 column 108' against the pressure of liquid CO2 passed from tank 101 'to the bottom of column 108'. directed.
  • the extractant-laden extraction fluid which in turn contains resins and oils that are soluble in liquid CO2, is withdrawn from the top of column 108 'and passed through a pressure-reducing system and a separator 109' where the extractant from the extraction fluid passes through, for example Evaporating the liquid CO2 separated from this and is removed via the line 1 10 'from the system.
  • the vaporized CO is collected as a top product from the separator 109 ', cooled and pressurized and returned via line 1 1 1' for recycling in the tank 101 '.
  • DE 691 21 206 T2 describes a method of producing decaffeinated green coffee beans, the method comprising a step of decaffeinating the acidified beans by supercritical extraction.
  • the coffee beans are rinsed in a reactor with water and supercritical CO2.
  • WO 96/33861 A1 describes a continuous extraction process and a corresponding extraction apparatus.
  • a substantially cylindrical reactor provided with inlets and outlets is provided for this purpose.
  • a screw press is provided, which conveys the raw material from the inlet under compression to the outlet of the reactor, at the same time the extraction fluid is introduced under pressure into the reactor.
  • an oil or an extracted substance is obtained, from which subsequently the extraction fluid can be removed.
  • a major disadvantage of the known devices for extraction and extraction process is their constructive and procedurally very complicated structure and the complex implementation of the method, since often several reactors with elaborate pressure generators and heat exchangers for the preparation of the extraction fluid, in particular the supercritical extraction fluid are necessary.
  • the extraction fluid must first be elaborately prepared and transported complicated to the reactors.
  • the extraction and extraction methods require pressure-tight feed to a reactor and pressure-tight reactors.
  • the wall thicknesses of the reactors there are considerable high costs for the wall thicknesses of the reactors, as well as the need to move batchwise or batchwise.
  • due to the reactors long extraction times of sometimes up to well over ten minutes are necessary.
  • centrifuges are known in which, for example by means of a supply line and a nozzle, a solvent on the in a in the
  • Centrifuge drum arranged sieve sedimented mixture is sprayed.
  • these centrifuges have the disadvantage that in addition to the limited volume in the centrifuge drum lines and nozzles are still to order, so that the known centrifuges are structurally complicated and expensive to manufacture in terms of manufacturing.
  • the solvent is not suitable as a supercritical extraction fluid since the solvent is only converted into a supercritical phase after it has been applied to the sieve-deposited mixture and after it has penetrated the mixture, ie when the solvent hits the drum shell of the centrifuge drum.
  • the deductible Mixture in particular the solid phase or the solid cake, not penetrated by the supercritical extraction fluid.
  • Extraction method an extraction method for the treatment of a
  • a centrifuge for carrying out a
  • the centrifuge includes a
  • Centrifuge drum having a drum axis along one axis
  • Centrifuge drum has an inlet opening and an outlet opening and the centrifuge drum via the inlet opening, a mixture can be fed.
  • the centrifuge drum can thereby extend with the drum casing from the inlet opening to the outlet opening along the drum axis.
  • the centrifuge drum is rotatably mounted in the centrifuge about the drum axis.
  • the centrifuge comprises a screen having a pore, the screen being disposed on an inner circumferential surface of the drum shell. In the operating state, the centrifuge drum is rotatable about the drum axis in such a way that on an inner side of the sieve the mixture standing under a drum pressure generated by the rotation is settable.
  • the centrifuge comprises an ejection element, which is arranged in the sieve.
  • the ejection element comprises a conveyor with a delivery opening, wherein by means of the conveyor, a solvent in the centrifuge drum, in particular as extraction fluid, fed and the solvent via the delivery opening at least partially as an extraction fluid such from the conveyor into the centrifuge drum on the inside of the screen deductible mixture can be applied, that by means of the extraction fluid, an extractant is extractable from the mixture.
  • the solvent for example, CO2 isopropanol, alcohols in general, hexane, gasolines or dimethylsulfone, the centrifuge drum by means of the ejection element included
  • Delivery via the delivery opening at least partially as
  • Extraction fluid can be supplied.
  • the mixture is due to the rotation of the
  • Centrifuge in particular the rapidly rotating centrifuge drum and the centrifugal forces acting and the resulting high
  • the mixture can be separated into a solid phase or a colloidal liquid, in particular a solid cake, which is deposited on the inside of the sieve, and a liquid phase of the mixture which is eliminated through the sieve.
  • the solvent from the conveyor via the delivery opening as extraction fluid in the centrifuge drum on the deposited on the inside of the sieve mixture can be applied, thus by means of the extraction fluid extraction material on constructive and procedurally simple way of the dedustable mixture, in particular the solid phase or the kollioden liquid or the solid cake, are extracted.
  • the extractant may be entrained by the extra ctionsfluid and separated, for example by evaporation of the extraction fluid again from this.
  • a mixture is generally to be understood as meaning that the mixture consists of at least two substances, it being possible for the mixture to be a homogeneous or heterogeneous mixture, and for the substances to be solid, liquid or gaseous.
  • Mixture in particular the mixture which can be supplied via the inlet opening, can be a liquid phase and / or a solid phase and / or a
  • Gas phase include, wherein the solid phase may in particular also be a colloidal liquid.
  • the settable mixture below the drum pressure and / or a rotary pressure can in this case be the solid phase or the colloidal liquid, and in particular also becomes
  • Rotary pressure standing settable mixture may also include portions of the gas phase, which are liquid due to the drum pressure and / or rotary pressure, or portions of the liquid phase. However, a substantial portion of the liquid phase may be due to drum pressure and / or
  • Rotational pressure from the settleable mixture can be separated.
  • the mixture is a biomass, in particular a biomass mixture
  • the mixture may also comprise a mineral or a rock or a rare earth.
  • the mixture may be mixed with a liquid and / or a solution.
  • the drum pressure is caused by the rotation of the centrifuge, in particular the centrifuge drum, the centrifugal force acting on the inside of the centrifuge drum. Under the drum pressure, in particular a high drum pressure, is below one
  • the rotational pressure is caused by the rotation of the ejection element with the conveyor, wherein the centrifugal force acts on the solvent of the conveyor.
  • the centrifuge may be a vertically or horizontally mounted centrifuge, a continuous or discontinuous centrifuge, in particular a peeler centrifuge, sliding centrifuge, single or multi-stage pusher centrifuge, double pusher centrifuge or vibrating centrifuge or a
  • the centrifuge drum can be rotatable in the operating state by means of a drum drive with a predeterminable drum speed around the drum axis.
  • the drum drive may be a first motor, in particular a frequency-controlled first motor to the
  • Drain diameter can be arranged.
  • the centrifuge drum can be outside, So for example on an outer peripheral surface of
  • the centrifuge drum can be rotatable in a first direction of rotation.
  • the centrifuge drum can with a drum speed of 1 to 10,000
  • Rotate revolutions per minute preferably at 500 to 10 000 revolutions per minute, particularly preferably from 1000 to 4000
  • Revolutions per minute in particular be rotatable at 2000 to 4000 revolutions per minute.
  • the drum speeds produce in this area very high centrifugal forces, in particular a very high drum pressure, so that the introduced mixture can be brought very quickly to the drum pressure and the mixture is very quickly deductible and / or short extraction times are possible.
  • Centrifuge drum may be hollow cylindrical, preferably formed as a first hollow cylinder.
  • the centrifuge drum can also have a round and / or circular and / or elliptical cross section in a radial direction, that is to say orthogonal to the drum axis.
  • the centrifuge drum may also have a prism-like shape and / or be formed as a prism and in the radial direction have a triangular and / or rectangular and / or polygonal cross-section.
  • the ejection element in particular with the conveyor, can be rotatable in the first direction of rotation as the centrifuge drum and rotatable at an output speed of 0 to 300 revolutions per minute difference to the drum speed, preferably 0 to 150 revolutions per minute, more preferably 0 to 50 revolutions per Minute,
  • the ejection element may be drivable with a second motor, in particular a frequency-controlled second motor, in order to be able to use the ejection element to control the throughput quantity and the extraction time as well as the throughput time of the mixture.
  • a second motor in particular a frequency-controlled second motor, in order to be able to use the ejection element to control the throughput quantity and the extraction time as well as the throughput time of the mixture.
  • the pore may be a screen opening, for example, a bore which extends, preferably in, one extending in the direction of the drum axis
  • Siebmantel is arranged, wherein in particular a liquid phase of the mixture due to the drum pressure on the pore to an inner peripheral surface of the drum shell can be discharged.
  • One or more pores may be arranged on or in the screen jacket.
  • a pore size of the pore may be below the particle size of the solid phase of the mixture, preferably, the pore size may be at least a factor of 3 to 10 smaller than a particle size of the solid phase, so that a
  • Constipation of the pore can be avoided.
  • the centrifuge has a much smaller device geometry with a high energy efficiency with low throughput times and high throughputs compared to the known devices for extraction, especially with respect to reactors.
  • the solvent by means of
  • the solvent at least partially as a supercritical extraction fluid such from
  • Conveyor in the centrifuge drum on the deductible on the inside of the screen mixture can be applied, so that by means of the supercritical extraction fluid extractant is extractable from the mixture.
  • This measure advantageously combines the centrifuge with the advantages of supercritical extraction techniques. Since the solvent is already convertible into a supercritical extraction fluid at the conveyor, the supercritical extraction fluid can be applied to the mixture settable on the inside of the screen and / or can penetrate it completely. Unlike known centrifuges, in which the
  • Solvent is only on the drum shell into a supercritical phase can be converted and thus an extraction with a supercritical
  • Extraction means or an extraction method is not possible, since the extraction fluid in the liquid phase encounters the settleable mixture.
  • Extraction with the centrifuge according to the invention with the supercritical extract fluid advantageously leads to a greater purity and no extractant is lost, since "residues" recovered from the supercritical extraction fluid can be returned to the centrifuge.
  • an improved selectivity and a higher yield can thus be achieved.
  • the solvent can be partially used as a
  • the supercritical extraction fluid may be applied to the mixture, i.
  • the extraction fluid may not comprise supercritical and / or quasi-supercritical and / or supercritical phase moieties, preferably only
  • the extraction process in particular the supercritical extraction in a centrifuge, can also be used for the supercritical deposition of substances dissolved in supercritical solvents in a certain solid Use, for example, pharmaceuticals, the substance to be deposited evenly in the carrier first in the supercritical
  • Solvent is dissolved, then introduced into the solid by diffusion and then by lowering the pressure, so the
  • Drum pressure (speed reduction), is precipitated from the solvent. As a result, a uniform deposition of the active substance in the carrier solid is achieved.
  • Temperature-sensitive mixture in particular a strongly aqueous and temperature-sensitive solid phase or an extractant contained in the solid phase, moreover, acetone can be infiltrated in the supercritical state to displace water from the mixture.
  • the acetone can be extracted with the supercritical CO2, thus gently drying the temperature-sensitive extractant.
  • the ejection element is arranged in the centrifuge, preferably in the sieve, rotatable about an ejection axis, and the ejection element, in particular the ejection element with the
  • Conveyor is in the operating state is rotatable about the ejection axis, that under one generated by the rotation
  • Rotary pressure standing solvent through the ejection element, in particular the conveyor, is convertible into an extraction fluid, preferably in an at least partially convertible into a supercritical extraction fluid.
  • the ejection axis may preferably coincide with the drum axis, wherein the ejection axis can also assume a different position from the drum axis.
  • the at least partially supercritical extraction fluid can be applied to the settable mixture, in particular the solid cake or a colloidal liquid, and penetrate the settled mixture and the screen and in the space between the drum shell and the outside of the screen under partially supercritical and / or completely supercritical conditions in the direction of the inlet opening or
  • Outlet opening to a pressure relief valve and there in a suitable collecting container for the purpose of relaxation, recuperation and separation of the extractant are performed by the extraction fluid.
  • Relaxation valve also allows the maintenance of the supercritical phase of the extraction fluid in the centrifuge, in particular in the centrifuge drum.
  • the ejection axis In the direction of the ejection axis, preferably in
  • the conveyor may be at least partially conical with respect to the diameter radially to the ejection axis
  • the solvent can thus by the rotation of the ejection element, in particular the conveyor, due to the
  • the at least partially supercritical extraction fluid can completely penetrate the mixture which can be deposited on the inside of the sieve, in particular the solid cake, or can be applied to it.
  • the conveyor comprises a along the ejection axis of the ejection element extending
  • Shaft sheath, and / or the delivery opening is on, preferably in, wave sheath arranged, and / or the delivery opening is as a nozzle and / or as a bore, preferably as an oblique bore with respect to the ejection axis and / or with respect to the ejection axis vertical radial direction, formed. It can also be provided one or more cleaning openings, as a further nozzle, in particular a
  • Cutting spray nozzle and / or as a further bore, preferably as a Further oblique bore in relation to the ejection axis and / or in relation to a direction perpendicular to the ejection axis radial direction may be formed.
  • the delivery openings and / or the cleaning openings can be spiral-shaped or linear with respect to the discharge axis on
  • Shaft be arranged so that during a rotation of the
  • Centrifuge drum has a spiral line or linear line.
  • the delivery openings and / or the cleaning openings may be circumferentially distributed on the shaft shell, so that a sufficient amount of extraction fluid, preferably supercritical extraction fluid, uniformly on the settleable mixture, in particular the solid cake, can be applied.
  • the conveyor in particular also in connection with dere arrangement of the delivery opening in the shaft jacket, a transport and distribution device for uniform spreading of the
  • the cleaning opening advantageously allows deposits on the sieve, in particular on or in the pore of the sieve, to be loosened and removed in a simple manner so that the sieve can be cleaned and / or possibly stuck or adhering solid phase, in particular layers which are located in the intermediate space between the ejection element and sieve and / or sieve and drum shell surface can form, cut or detached, and then to be transported by the ejection element can.
  • the solvent by means of a separate cased system in the interior of the Ausstosselements, in particular the hollow screw, guided and discharged by means of the delivery openings, and in particular with the obliquely directed to the sieve cleaning openings, preferably cutting spray nozzles, cleaned the centrifuge.
  • Ejection element in particular the screw conveyor, thus fulfills
  • the conveyor comprises a feed opening and the solvent is supplied via the feed opening of the conveyor and / or the conveyor comprises a conveyor tube, so that the solvent of the conveyor with the
  • Delivery pipe can be fed, preferably the delivery pipe partially in the
  • Conveyor and / or the conveyor tube may be hollow cylindrical, preferably the conveyor a first hollow shaft and the conveyor tube to be a second hollow shaft.
  • the conveyor may be closed on one side first hollow shaft.
  • the hollow shaft closed on one side can be understood below to mean that the hollow shaft is closed on a diametrically opposite side to the feed opening with respect to the ejection axis or drum axis.
  • the delivery tube may additionally comprise one or more tube openings, for example bores, on the delivery jacket so that the solvent can be distributed uniformly in the delivery device.
  • the conveying device and / or the conveying tube can also have a round and / or circular and / or elliptical cross section in a radial direction, that is to say orthogonal to the ejection axis.
  • the conveyor and / or the conveyor tube may also have a prism-like shape and / or be formed as a prism and in the radial direction of a triangular and / or rectangular and / or poly
  • the delivery tube allows a uniform supply and distribution of the solvent in the
  • the sieve is a filter cloth and / or a
  • Support fabric and / or a filter, in particular, the sieve is made
  • Filter cloth and / or the support fabric can be a textile filter cloth and / or a Be textile backing fabric.
  • the support fabric may be disposed between the filter cloth and the inner peripheral surface of the drum shell and thereby prevents the filter cloth is pulled into the Abiaufbohrung due to the drum pressure and the Abiaufbohrung is clogged by the filter cloth. By supporting tissue is thus ensured that the centrifuged liquid phase of the mixture safely from the
  • Centrifuge drum can be discharged to the outside.
  • the filter screen can also be a second hollow cylinder in which the one or more pores can be arranged.
  • the sieve may be hollow cylindrical, preferably a third hollow shaft.
  • the sieve can also have a round and / or circular and / or elliptical cross section in a radial direction, that is to say orthogonal to the drum axis. The sieve advantageously enables the settable mixture, in particular the solid phase or the
  • Solid cake to be arranged so that the extraction fluid, in particular the supercritical extraction fluid, can be applied to the settable mixture and this is completely penetrable by the extraction fluid.
  • one or more grooves are formed on an outer side of the screen, and / or formed in the direction of the drum axis one or more longitudinal grooves.
  • liquid phase of the mixture and / or the extraction fluid, in particular the partially supercritical extraction fluid can thus be directed to the inlet opening and / or outlet opening, in particular to the
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Relaxation valve or after off the centrifuge off and / or traceable.
  • Fasteners arranged to fix the screen on the drum, preferably on the outside of the screen a cam and a groove provided on the inner peripheral surface of the drum shell, so that the screen on the centrifuge drum, preferably on the inner peripheral surface of the drum shell is fixed, in particular in the operating state at the inner Peripheral surface on the drum shell can be fastened and fixed.
  • Fastening elements can be any device with which the sieve can be fastened to the centrifuge drum such that the sieve can be carried along by the centrifuge drum in the operating state.
  • the sieve can also be fastened to the centrifuge drum by means of a cold press adaptation.
  • the sieve can also by means of a fixing device, for example with a fixing pin and / or a Fixierkragen on the inner
  • Peripheral surface of the drum shell to be fixed in the radial direction to the drum axis. This measure allows a simple and fast
  • the centrifuge can be adjusted by changing the sieve to any mixture and the sieve depending on
  • the ejection element in the form of a helical coil is formed with an ejection surface, preferably a screw conveyor, and the ejection element is rotatable in the operating state to the ejection axis such that the mixture, in particular the
  • Solid phase or the solid cake, with the ejection surface along the ejection axis is movable, or the ejection element is a
  • Thrust surface of the sliding floor device, along the ejection axis is movable.
  • the ejection element can, especially if it is as
  • Moving bottom device is formed in the operating state a
  • the ejection element in particular the screw conveyor, may comprise the ejection surface arranged on the conveyor, so that the ejection element advantageously fulfills a dual function.
  • Ausstosselement the solvent in an extraction fluid, in particular a supercritical extraction fluid, converted and be applied to the settleable mixture, and on the other hand, by means of the ejection element, in particular the ejection surface or thrust surface, the settleable
  • the ejection element in particular the conveying device, may also comprise a mixture feed,
  • a bore in particular in the corrugated sheath, so that the mixture through the inlet opening by mixture supply in the
  • the ejection element can also be a
  • the mixture can be discharged from the centrifuge via the outlet opening, and / or the centrifuge comprises a
  • the expansion valve advantageously allows the maintenance of the supercritical phase of the extraction fluid in the centrifuge
  • the centrifuge may comprise a cavitation rotor, wherein the
  • Cavitation rotor preferably between the inlet opening of the Centrifugal drum and the ejection element can be arranged, particularly preferably, the Kavitationsrotor be rotatable in the operating state about a rotor axis.
  • the cavitation rotor can turn into a second
  • Direction of rotation may match, preferably the second
  • Cavitation rotor may be hollow cylindrical, preferably be designed as a further hollow cylinder.
  • the cavitation rotor may be drivable with another motor, in particular a frequency-controlled further motor, in order to be able to control the throughput quantity and the throughput time of the mixture with the cavitation rotor.
  • the first engine and the second engine and the other engine may be the same engine or different engines.
  • the mixture with the Kavitationsrotor can be additionally pretreated, mixed and cavitated, i. mechanical forces act on the mixture and thus ensure better mixing of the mixture. Likewise, the mixture due to the rotation of the
  • Cavitation rotor in the opposite direction additionally treated mechanically and / or mixed better.
  • the centrifuge may comprise a flash tank, which may be arranged at the outlet opening, so that the settable mixture of the centrifuge drum with the ejection element in the
  • Relaxation tank is feasible.
  • a discharge device can be provided on the expansion tank, so that the expanded mixture with the discharge device can be discharged from the expansion tank.
  • the centrifuge may comprise a condenser, wherein the condenser is preferably arranged on the expansion tank, so that the expanded mixture can be liquefied by means of condensation.
  • the centrifuge may comprise a pump, preferably one
  • the pump may preferably be arranged at the inlet opening, particularly preferably outside the centrifuge.
  • the Centrifuge may comprise a steam generator, wherein the steam generator is preferably arranged at the inlet opening, particularly preferably outside the centrifuge.
  • the pump may be a frequency-controlled pump and / or be controllable by a transmission. The pump has the advantage that the mixture before it the centrifuge, in particular the
  • Centrifuge drum and / or the Kavitationsrotor can be fed via the inlet port, can be brought in addition to a pump pressure.
  • the steam generator has the advantage that the mixture, before it can be supplied to the centrifuge via the inlet opening of the drum, additionally a gas, preferably a water vapor, can be supplied.
  • the invention further relates to an extraction process for treating a mixture in a centrifuge.
  • the centrifuge comprises a centrifuge drum having a drum shell extending along a drum axis of the centrifuge drum, the centrifuge drum having a drum shell
  • Centrifuge drum via the inlet opening a mixture is supplied.
  • the centrifuge drum is rotatably mounted in the centrifuge about the drum axis.
  • the centrifuge further comprises a screen with a pore, and the screen is placed on an inner peripheral surface of the drum shell.
  • the centrifuge drum is rotated about the drum axis such that on an inside of the sieve, the mixture standing under a drum pressure generated by the rotation is deposited.
  • the centrifuge also comprises an ejection element which is arranged in the sieve.
  • Ausstosselement comprises a conveyor with a delivery opening, wherein by means of the conveyor, a solvent in the
  • Delivery opening at least partially as an extraction fluid from the
  • Transfer device is applied in the centrifuge drum on the deductible on the inside of the screen mixture that by means of
  • Extraction fluid extractant is extracted from the mixture.
  • the solvent is so over the
  • Delivery opening at least partially applied as a supercritical extraction fluid from the conveyor into the centrifuge drum on the deductible on the inside of the screen mixture that an extractant is extracted from the mixture by means of the supercritical extraction fluid.
  • the ejection element with the conveyor is rotatable about a
  • Ejection axis is arranged, and the ejection element is rotated about the ejection axis, that at least partially in a supercritical extraction fluid transferred by the rotary pressure generated by the rotary printing solvent and the supercritical extraction fluid is applied to the deductible on the inside of the screen mixture, so that an extractant is extracted from the mixture by means of the supercritical extraction fluid.
  • Mixture can be carried out as follows. By means of the conveyor, a solvent is fed into the centrifuge drum.
  • Solvent is supplied by means of the rotation of the Ausstosslements, in particular via the conveyor with the delivery openings, as extraction fluid in the centrifuge drum and applied to the deductible on the inside of the screen mixture.
  • Drum pressure cause the extraction fluid, the settleable mixture, in particular the deposited on the screen solid phase or the
  • Solid cake of the mixture can completely penetrate, that is extracted by means of the extraction fluid, an extractant from the mixture.
  • Delivery openings are placed in the centrifuge drum and placed on top of the Deposited on the inside of the screen dedustable mixture, so that by means of at least partially supercritical extraction fluid, the settleable mixture is completely penetrated.
  • the inventive method has the above-described advantages of the centrifuge according to the invention.
  • the invention further relates to the use of a centrifuge according to one of claims 1 to 11 for carrying out an extraction method according to any one of claims 12 to 14.
  • the centrifuge according to the invention can be used in carrying out the extraction process according to the invention.
  • Fig. 1 is a known from the prior art
  • Fig. 2 shows a first embodiment of the inventive
  • Figure 2 shows a schematic representation of a first
  • Embodiment of the inventive centrifuge 1 for carrying out an extraction process comprises a
  • Centrifuge drum 2 with a drum shell 21 extending along a drum axis T of the centrifuge drum 2.
  • Centrifuge drum 2 has an inlet opening 22 and an outlet opening 23, wherein the centrifuge drum 2 via the inlet opening 22 a mixture can be fed. In addition, the centrifuge drum 2 in the
  • Centrifuge 1 rotatably disposed about the drum axis T.
  • the centrifuge further comprises a sieve 3 with a pore (not shown), wherein the sieve 3 is arranged on an inner circumferential surface 24 of the drum shell 21.
  • the centrifuge drum 2 is rotatable about the drum axis T in such a way that on an inner side of the sieve 3 the mixture standing under a drum pressure generated by the rotation is settable.
  • the centrifuge further comprises an ejection element 4, which is arranged in the sieve 3.
  • the ejection element 4 comprises a
  • a solvent in such a way in the centrifuge drum 2 can be supplied and the solvent via the feed opening 42 at least partially as a
  • Extraction fluid in such a way from the conveyor 41 into the centrifuge drum 2 can be applied to the deductible on the inside of the screen mixture, that by means of the extraction fluid, an extractant from the mixture is extractable.
  • the solvent can also by means of
  • Conveyor 41 can be supplied as such as extraction fluid in the centrifuge drum 2 and by means of the delivery opening 42 at least partially as a supercritical extraction fluid from the conveyor 41 into the centrifuge drum 2 on the dedustable on the inside of the screen 3 mixture can be applied that by means of the supercritical extraction fluid Extractant is extractable from the mixture.
  • the ejection element 4 is arranged in the centrifuge 1, preferably in the sieve 3, rotatable about an ejection axis A. In the operating state that is
  • supercritical extraction fluid is convertible. So the solvent can By means of the rotary pressure already on the ejection element 4, preferably in the conveyor 41, be transferred into an extraction fluid, so that the solvent of the centrifuge drum 2 can be supplied as extraction fluid.
  • the solvent can thus be applied by means of the delivery opening 42 at least partially, preferably completely, as a supercritical extraction fluid from the conveyor 41 into the centrifuge drum 2 to the dedustable on the inside of the screen 3 mixture that by means of the supercritical extraction fluid, an extractant from the mixture is extractable.
  • Extraction fluid can thus the dedustable mixture, completely
  • the conveying device 41 comprises a shaft casing 43 extending along the ejection axis A of the ejection element 4.
  • the feed opening 42 is arranged on, preferably in, the shaft casing 43, and is preferably designed as a nozzle and / or a bore.
  • the conveyor 41 further comprises a conveyor tube 44, so that the solvent of the conveyor 41 with the conveyor tube 44 can be fed.
  • the delivery pipe 44 is partially disposed in the conveyor 41 and the inlet port 23.
  • the delivery tube 44 may also include a nozzle and / or a bore (not shown).
  • the conveyor and / or the conveyor tube are
  • Hollow shaft and the delivery pipe 44 a second hollow shaft.
  • the conveyor 41 is a closed on one side first hollow shaft.
  • the sieve 3 may be a filter cloth and / or a support fabric and / or a
  • Filter screen and may in particular made of polypropylene and / or metal and / or of a composite material and / or of a carbon
  • Be composite material preferably be made of a sintered material and / or ceramic and / or sintered metal.
  • Be composite material preferably be made of a sintered material and / or ceramic and / or sintered metal.
  • One or more grooves may be formed on the outside of the screen 3, and / or in the direction of the drum axis T one or more be formed a plurality of longitudinal grooves.
  • fasteners may be arranged to fix the screen 3 to the centrifuge drum.
  • a cam can be provided on the outside of the screen 3, and a groove can be provided on the inner peripheral surface 24 of the drum shell 21, so that the screen 3 can be fixed to the centrifuge drum 2, preferably on the inner peripheral surface 24 of the drum shell 21.
  • the ejection element 4 is in the form of a helical coil with an ejection surface 45, in particular as a screw conveyor. In the operating state, the ejection element 4 is rotatable about an ejection axis A such that the mixture with the ejection surface 45 along the
  • Ejection axis A is movable.
  • the ejection element 4 may also be a push floor device (not shown) and the
  • Push floor device can in the operating state so along the
  • Ejection axis A be arranged back and forth that the mixture with the pusher bottom device, preferably with a thrust surface of the
  • the centrifuge 1 comprises an expansion valve 5, which is arranged at the inlet opening 23 of the centrifuge drum 2.
  • Mixture can be carried out in a centrifuge 1 as described above.
  • Mixture can be carried out in the centrifuge 1 according to the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne une centrifugeuse permettant de mettre en œuvre un procédé d'extraction. La centrifugeuse comporte un tambour centrifuge (2) doté d'une enveloppe de tambour (21) s'étendant le long d'un axe (T) du tambour centrifuge (2). Le tambour centrifuge (2) comprend une ouverture d'entrée (22), par le biais de laquelle un mélange peut être introduit. Le tambour centrifuge (2) est disposé dans la centrifugeuse (1) de manière à pouvoir tourner autour de l'axe de tambour (T). La centrifugeuse comporte un tamis (3) présentant une porosité et le tambour centrifuge (2) peut tourner autour de l'axe de tambour (T) à l'état de fonctionnement de telle sorte que le mélange puisse se déposer sur un côté intérieur du tamis (3). La centrifugeuse comporte un élément d'éjection (4) qui est disposé dans le tamis (3), l'élément d'éjection (4) comportant un dispositif de transport (41) doté d'une ouverture de transport (42). Au moyen du dispositif de transport (41), un solvant peut être introduit dans le tambour centrifuge (2) et le solvant peut être appliqué, par le biais de l'ouverture de transport (42), au moins partiellement en tant que fluide d'extraction, à partir du dispositif de transport (41) dans le tambour centrifuge (2) sur le mélange pouvant se déposer sur le côté intérieur du tamis (3), de manière à pouvoir extraire une substance d'extraction à partir du mélange au moyen du fluide d'extraction. L'invention concerne en outre un procédé d'extraction permettant de traiter un mélange dans la centrifugeuse (1) ainsi que l'utilisation d'une centrifugeuse (1) pour mettre en œuvre un procédé d'extraction.
PCT/EP2017/071192 2017-01-27 2017-08-23 Centrifugeuse, procédé d'extraction permettant de traiter un mélange et utilisation d'une centrifugeuse WO2018137795A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762451371P 2017-01-27 2017-01-27
US62/451371 2017-01-27

Publications (1)

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WO2018137795A1 true WO2018137795A1 (fr) 2018-08-02

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Application Number Title Priority Date Filing Date
PCT/EP2017/071188 WO2018137793A1 (fr) 2017-01-27 2017-08-23 Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange
PCT/EP2017/071187 WO2018137792A2 (fr) 2017-01-27 2017-08-23 Procédé d'extraction pour le traitement d'un mélange dans un ensemble de centrifugation, ensemble de centrifugation
PCT/EP2017/071191 WO2018137794A1 (fr) 2017-01-27 2017-08-23 Procédé d'extraction pour traiter un mélange ligneux dans une centrifugeuse
PCT/EP2017/071192 WO2018137795A1 (fr) 2017-01-27 2017-08-23 Centrifugeuse, procédé d'extraction permettant de traiter un mélange et utilisation d'une centrifugeuse

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Application Number Title Priority Date Filing Date
PCT/EP2017/071188 WO2018137793A1 (fr) 2017-01-27 2017-08-23 Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange
PCT/EP2017/071187 WO2018137792A2 (fr) 2017-01-27 2017-08-23 Procédé d'extraction pour le traitement d'un mélange dans un ensemble de centrifugation, ensemble de centrifugation
PCT/EP2017/071191 WO2018137794A1 (fr) 2017-01-27 2017-08-23 Procédé d'extraction pour traiter un mélange ligneux dans une centrifugeuse

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Publication number Priority date Publication date Assignee Title
CN114210091A (zh) * 2021-11-05 2022-03-22 广州市博之越精细化工有限公司 一种用于克斑的植物天然成分提取工艺

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DE69121206T2 (de) 1990-08-23 1996-12-05 Liquid Carbonic Corp Eintkaffeinierungsverfahren von kaffee durch eine säurebehandlung
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US1589097A (en) * 1923-12-04 1926-06-15 Hans C Behr Apparatus for continuously separating liquids from solids
DE69121206T2 (de) 1990-08-23 1996-12-05 Liquid Carbonic Corp Eintkaffeinierungsverfahren von kaffee durch eine säurebehandlung
DE69514856T2 (de) 1994-04-28 2000-08-17 Steiner Hops Ltd Extraktion von Hopfen
WO1996033861A1 (fr) 1995-04-27 1996-10-31 Sucher & Holzer Bauplanungs- Und Handelsgesellschaft Mbh Presse a vis
US20020134704A1 (en) * 2001-03-22 2002-09-26 Mitchell Allen R. Process and system for continuously extracting oil from solid or liquid oil bearing material
EP1579918A1 (fr) * 2002-12-26 2005-09-28 Tomoe Engineering Co. Ltd. Centrifugeuse
WO2013185243A1 (fr) * 2012-06-15 2013-12-19 650438 Alberta Ltd. Procédé et système de séparation de suspensions

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WO2018137794A1 (fr) 2018-08-02
WO2018137793A1 (fr) 2018-08-02
WO2018137792A2 (fr) 2018-08-02

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