WO2018137793A1 - Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange - Google Patents

Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange Download PDF

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Publication number
WO2018137793A1
WO2018137793A1 PCT/EP2017/071188 EP2017071188W WO2018137793A1 WO 2018137793 A1 WO2018137793 A1 WO 2018137793A1 EP 2017071188 W EP2017071188 W EP 2017071188W WO 2018137793 A1 WO2018137793 A1 WO 2018137793A1
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WO
WIPO (PCT)
Prior art keywords
drum
mixture
pressure
centrifuge
tank
Prior art date
Application number
PCT/EP2017/071188
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 WO2018137793A1 publication Critical patent/WO2018137793A1/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 arrangement according to the preamble of independent claim 1 and to a relaxation method for treating a mixture according to the preamble of independent claim 14.
  • centrifuge assemblies and / or centrifuges are widely used in a variety of embodiments and are used in a variety of fields. So come
  • discontinuous centrifuges preferably peeler centrifuges, used in which after separation of a mixture into a solid cake and a liquid phase of the solid cake peeled off by means of a peeling device of the drum wall and by suitable means, e.g. via a slide, to the outside of the drum is discharged.
  • a peeling device of the drum wall and by suitable means, e.g. via a slide, to the outside of the drum is discharged.
  • suitable means e.g. via a slide
  • Helical centrifuges or pusher centrifuges advantageously used.
  • the pusher centrifuges can be one-stage or multi-stage pusher centrifuges, as well as double-pusher centrifuges. All of these types of centrifuge have long been well known to those skilled in the art and are described in detail in, for example, the standard work "Industrial Centrifuges" by Prof. W. Stahl, DRM PRESS. Furthermore, in the near future, the production and production of
  • Biomass mixtures for example, the saccharification or extraction of biomass derivatives for the chemical industry from lignocelluloses, be an integral part of industrial raw material extraction.
  • Biomass is essential to the security of future energy supply as it forms an alternative to fossil fuels. As with other renewable energy sources, the production of bioethanol or biogas and its use in the transport and energy industries has environmental benefits over crude oil based fuels, as the
  • hydrolysis may be necessary, in particular for the biomass, preferably for the cellulose fraction of the biomass, in order to convert it into glucose.
  • This step which can be carried out with the aid of acid and / or enzymatic catalysts, presents a problem because of the chemical stability of the cellulose chain and the protection of the plant tissue by lignin. Due to the structure of the mixture, in particular the biomass, preferably the lignocelluloses, for example, if the carbohydrates of the biomass are not directly accessible to hydrolytic enzymes, one or more pretreatments are necessary to improve the hydrolysis yield.
  • thermo-mechanical stress of the fiber composite of the biomass for subsequent use to provide great penetration and surface area to chemicals or enzymes.
  • the purpose of the pretreatment is therefore to facilitate the penetration and spread of the enzymes and microorganisms.
  • hydrothermal processes appear to be among the most effective for improving the accessibility of mixtures.
  • a steam explosion process is a thermal-mechanical chemical process in which the presence of heat (as vapor), mechanical forces (shear) and chemical processes (hydrolysis) are combined. The result is the change of the mixture,
  • Reheating tank directed to energy recovery.
  • the reactor pressure has dropped to the desired level (typically 2-4 bar)
  • the steam return from the reactor to the preheat tank is turned off.
  • the biomass is then at a low
  • Relief pressure blown to a flash tank typically 1.2 bar.
  • the mixture is from Biomass in a Vorierrczyrungsschhtt preheated in a preheating tank by means of a first and second pressure relief tank steam recirculated. Following the preheated mixture is a
  • Pressure relief tank out wherein between the reactor and the first pressure relief tank, a nozzle is arranged. Through the nozzle there is a rapid pressure relief of the mixture under the reactor pressure in the first pressure relief tank and the mixture is depressurized.
  • a major disadvantage of the known steam explosion and relaxation process or steam explosion process is their constructive and procedurally very complicated structure and the complex implementation of the method, since several reactor vessels with complex pressure generators are necessary.
  • continuous steam explosion apparatus and / or relaxation processes for treating mixtures require a pressure-tight supply to a reactor. In the reactor then again leads and pressure generator are necessary to bring the mixture to be treated with steam 15 to 20 minutes to the required reactor pressure and the required reactor temperature, then to another pressure lock with another
  • centrifuge assembly for performing a relaxation process and a relaxation process for the treatment of a mixture that are structurally and procedurally simple and / or have low flow rates of the mixture and / or have a higher flow rates of the mixture and / or can be controlled and controlled continuously and / or have a reduced energy consumption.
  • the centrifuge assembly comprises a centrifuge with a drum having an inlet opening and a
  • the drum is rotatable about a drum axis such that on an inner side of the drum, in particular an inner
  • Drum shell surface which is deductible under a rotary pressure mixture.
  • the drum can be with a drum shell, which may include in particular the drum shell surface, of the
  • the centrifuge assembly comprises a flash tank, wherein in the flash tank a lower compared to the rotary pressure
  • Tank pressure can be formed.
  • the outlet opening of the drum is arranged on a receiving opening of the flash tank and the mixture deposited under the rotary pressure so with the ejection element via the outlet opening and the receiving opening in the
  • Discharge tank is drained from the drum that the mixture is under the lower tank pressure of the flash tank
  • 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, wherein the
  • Solid phase in particular may also be a colloidal liquid, and / or a gas phase.
  • the settable mixture which is under rotary pressure may be the solid phase or colloidal
  • the settable mixture which is under the rotary pressure may also comprise portions of the gas phase, which are liquid due to the rotary pressure, or portions of the liquid phase.
  • a substantial proportion of the liquid phase may be separable from the settable mixture due to the rotational pressure.
  • the relaxed mixture present in the expansion vessel essentially comprises fractions of the solid phase, in particular the solids cake, and / or a fraction of liquid phase and / or a fluid which may comprise fractions of the gas and / or liquid phase of the mixture.
  • the mixture can be a biomass, in particular a
  • Biomass mixture of different origin and composition may also comprise a mineral or a rock or a rare earth.
  • a biomass or a biomass mixture for example from lignocelluloses, may preferably be chosen from a mixture
  • the mixture may be mixed with a liquid and / or a solution.
  • Essential to the invention is that the mixture of the drum can be supplied, the mixture due to the rotation of the centrifuge, in particular the drum, and in particular due to the high speed and the high centrifugal force acting on the inside of the drum, quickly to the rotary pressure can be brought, so that the mixture, preferably a biomass, particularly preferably a vapor-saturated biomass, on the inner wall of the drum of a fast, high and efficient
  • the ejection element is the mixture which can be deposited on the inside of the drum under a high rotary pressure in a simple manner via the outlet opening of the drum and the receiving opening in the drum Relaxation tank with the low tank pressure can be guided out of the drum. Due to the rapid pressure change from the high rotational pressure in the centrifuge, in particular the drum, to the low container pressure in the flash tank, the settleable mixture is released explosively. In this case, the proportion of the gaseous phase in the settable mixture, in particular the fractions of the gaseous phase which are due to the rotary pressure in the liquid or solid phase, revert to the gas phase due to the lower vessel pressure, ie the settable mixture relaxes in a very short time Time and will
  • the mixture is a biomass or a biomass mixture, for example lignocelluloses which are mixed with water or another solvent
  • the pressure change from high rotary pressure to low
  • a fluid can be understood as meaning a liquid and / or a gas and / or a mixture of a gas and a liquid and / or a drop, in particular a liquid drop, and / or a gas bubble and / or steam, in particular the fractions of the liquid Mixture, which are relaxed in the expansion tank.
  • the mixture may thus comprise the fluid, in particular the fluid may comprise the gas phase of the mixture.
  • the rotational pressure is caused by the rotation of the centrifuge, in particular the drum, the centrifugal force acting on the inside of the drum.
  • the rotational pressure in particular a high rotational pressure, is to be understood below as meaning a rotational pressure having a rotational pressure range of 1 to 200 bar, preferably 1 to 100 bar, particularly preferably 10 to 100 bar.
  • the container pressure can correspond to the air pressure, preferably the container pressure can be from 1 to 20 bar, preferably from 1 to 10 bar, particularly preferably from 1 to 5 bar.
  • a gas pressure is to be understood as meaning the pressure which results from the fluid portion of the mixture in the centrifuge, in particular in the drum.
  • the gas pressure may correspond to the air pressure, the gas pressure may preferably be from 1 to 20 bar or 1 to 150 bar, preferably 1 to 10 bar or 1 to 75 bar, particularly preferably 1 to 5 bar.
  • 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 drum can be rotatable in a first direction of rotation.
  • the drum may be rotatable at a drum speed of 1 to 10,000 revolutions per minute, preferably 500 to 10,000
  • Revolutions per minute more preferably from 1000 to 4000
  • the drum may be hollow cylindrical, preferably formed as a first hollow cylinder.
  • the 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 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 drum may be drivable with a first motor, in particular a frequency-controlled first motor, in order to be able to control with the drum the flow rate and the throughput time of the mixture.
  • the drum can outside, so for example on an outside of the drum, against
  • the drum at the point of discharge of the mixture into the flash tank, may be a weir
  • the drum in particular the outlet opening of the drum, can be sealed, for example with an O-ring seal, on, preferably in, the receiving opening of the expansion tank.
  • the drum may have a first abutment, which at the
  • Receiving opening of the expansion tank can be arranged.
  • the ejection element may have a second counter bearing, which may be arranged on a further receiving opening of the expansion tank.
  • the ejection element can also be sealed, for example with an O-ring seal, on, preferably in, the further receiving opening of the
  • Relaxation container may be arranged.
  • the centrifuge arrangement in particular the centrifuge or the drum can, for example by means of the ejection element, a relaxation means, in particular carbon dioxide (CO2) or other gases under
  • the at least partially or completely supercritical relaxant penetrates the mixture, in particular the solid phase of the mixture, and then the at least partially or completely supercritical expansion agent under the lower container pressure of the flash tank bursts into a gas phase and the mixture can be relaxed by means of the expansion means.
  • the additional advantage is that such a relaxation agent is even easier to recover than, for example, as water vapor.
  • the ejection element in the form of a helical coil is formed with an ejection surface, preferably the ejection element is a screw conveyor, and the ejection element is rotatable in the operating state about an ejection axis, that the mixture with the ejection surface along the ejection axis is movable, or Ejection element is a push floor device and the
  • Push floor device is in the operating state so along the
  • Ausausossachse arranged to move back and forth, that the mixture with the push floor device, preferably with a thrust surface of the
  • the ejection element may preferably be arranged at a small distance from the inside of the drum in the drum.
  • the ejection element can be at least partially disposed at the outlet opening of the drum.
  • 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 ejection element can, in particular the
  • Conveying screw be rotatable in the first direction of rotation as the drum and rotatable at an output speed of 0 to 300 rpm difference to the drum speed, preferably 0 to 150 revolutions per
  • 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 throughput time of the mixture.
  • Ejection element in particular when it is designed as a sliding floor device, in the operating state, either an oscillatory
  • the rotation and / or the oscillatory movement of the ejection element can preferably via a push rod or a
  • the mixture is so on a
  • the ejection element comprises a hollow shaft, wherein the hollow shaft preferably has an inlet opening and / or a
  • Outlet opening particularly preferably the hollow shaft circumferentially one or more inlet openings and / or one or more
  • the push rod or a conveyor shaft may preferably be designed as a hollow shaft.
  • the hollow shaft may have a hollow cylindrical shape, and preferably also be designed as a second hollow cylinder.
  • the hollow shaft 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 hollow shaft 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 settleable mixture in particular the fractions of the gas phase, which is expanded in the expansion tank, can increase the tank pressure, so that the tank pressure can become higher than the gas pressure in the drum.
  • the hollow shaft thus allows with the
  • the ejection element comprises a
  • Discharge container is ejectable.
  • the discharge disc allows a targeted distribution of the mixture to be relaxed in the
  • a cavitation rotor is provided in the drum, the cavitation rotor preferably between the
  • Inlet opening of the drum and the ejection element is arranged, particularly preferably the Kavitationsrotor in the operating state by a Rotor axis is rotatable.
  • the cavitation rotor is rotatable in a second direction of rotation.
  • the first direction of rotation and the second direction of rotation may coincide, wherein preferably the second direction of rotation is opposite to the first direction of rotation.
  • Rotor axis may coincide or take a different position in space.
  • the cavitation rotor can
  • the cavitation rotor can also have a round and / or circular and / or elliptical cross section in a radial direction, that is to say orthogonal to the rotor axis.
  • the cavitation rotor may also have a prism-like shape and / or be formed as a prism and have a triangular and / or rectangular and / or polygonal cross-section in the radial direction.
  • the cavitation rotor may be drivable with a third motor, in particular a frequency-controlled third 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 third engine may be the same engine or different engines.
  • the drive device may for the first, second and / or third motor, a direct clutch and / or a
  • the mixture is additionally in a very short time, so in 1 to 10 seconds, preferably 3 to 8 seconds, mixed and cavitated, i. mechanical forces act on the mixture and thus ensure better mixing of the mixture.
  • the mixture due to the rotation of the
  • Cavitation rotor in the opposite direction additionally mechanically treated and / or better mixed.
  • the cavitation rotor on an inner circumferential surface has a blind bore, preferably a radially directed blind bore, preferably a plurality of blind holes in a row, particularly preferably several rows of blind holes.
  • Cavitation rotor between two blind holes can be shaped such that the mixture is feasible to the blind holes, in particular is enforceable.
  • the mixture can in radial direction to the rotor axis decreasing direction, ie in an interior of the cavitation rotor again
  • the blind holes can be arranged along the rotor axis, ie axially, and / or radially to the rotor axis, in a row, preferably in a plurality of rows of blind holes.
  • the shape of the blind holes can be adjustable in dependence on a rotor diameter and a rotational speed of the cavitation rotor and an inclination of the blind holes to the rotor axis and the formation of the bore openings of the blind holes.
  • Cavitation rotor between two blind holes may be formed as a needle tip, preferably with an at least partially in the radial direction to
  • the mixture can additionally be pretreated, in particular with the blind holes on the cavitation rotor.
  • the mixture can also be mixed advantageously by means of the blind bore by the mixture is sucked into the blind bore and due to the negative pressure resulting bubbles in the blind holes permanently collapse in and thus cavitate.
  • the drum with the drum speed of 1 to 10,000 revolutions per minute is rotatable or rotatable, preferably with 500 to 10,000 revolutions per minute, more preferably 1 to 4,000 revolutions per minute, especially 2,000 to 4,000
  • Rotational pressure also makes it possible to further heat the mixture and / or to keep a portion of the gas phase of the mixture in the liquid phase.
  • the centrifuge assembly comprises a sieve, preferably a hollow cylindrical sieve with one or more
  • Sieve openings or pores, and / or the sieve is arranged in the drum and the ejection element is arranged in the sieve.
  • a longitudinal groove and / or a transverse grooves may be provided on an outer surface of the screen.
  • Liquid phase of the mixture in particular an excess water to be traceable to the inlet opening or even to outside the centrifuge assembly and, for example, in a heating of the mixture in front of the centrifuge assembly, especially in front of the inlet opening, find use as energy-saving feedback.
  • the screen may be a filter cloth and / or a support fabric and / or a filter screen, in particular, the screen of polypropylene and / or metal and / or of a composite material and / or of a carbon
  • Composite material preferably of a sintered material and / or ceramic and / or sintered metal.
  • the filter cloth and / or the support fabric may be a textile filter cloth and / or a textile support fabric.
  • Support fabric may be disposed between the filter cloth and the inner peripheral surface of the drum shell, thereby preventing the
  • Filter cloth is pulled into the drain hole due to the drum pressure and the drainage hole is blocked by the filter cloth.
  • the sieve in particular the filter sieve, may comprise one or more pores and be another hollow cylinder.
  • the settleable mixture in particular the solid phase or the
  • Solid cake thus be deductible on the screen.
  • the relaxation tank is a
  • the centrifuge arrangement may comprise a condenser, wherein the condenser is preferably arranged on the expansion tank, so that the expanded mixture, in particular the fluid, can be liquefied by means of condensation.
  • the centrifuge assembly may also be another
  • Feed screw include, wherein the further screw conveyor is preferably arranged on the expansion tank, so that the relaxed mixture, in particular the relaxed solid cake, in or on or from the flash tank is feasible.
  • the capacitor makes it possible
  • the fluid in particular gases and vapors and
  • the further screw conveyor which may also be an ejection element, can be arranged on the expansion tank, preferably on the
  • the further screw conveyor makes it possible to carry away the expanded mixture from the centrifuge arrangement, in particular to supply further devices and / or methods, for example hot water leaching, chemical leaching or drying, etc.
  • the centrifuge assembly comprises a
  • Pump preferably a high-pressure solids pump, wherein the pump Preferably at the inlet opening, particularly preferably outside the Tronnnnel is arranged, and / or the centrifuge arrangement a
  • Steam generator includes, wherein the steam generator preferably at the
  • 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 can be supplied to the centrifuge, in particular the drum and / or the cavitation rotor via the inlet opening of the drum, can additionally be brought to a pump pressure.
  • the steam generator has the advantage that the mixture, before it can be supplied to the centrifuge, in particular the drum and / or the cavitation rotor via the inlet opening of the drum, additionally a gas, preferably a water vapor, can be supplied.
  • the invention further relates to a relaxation process for treating a mixture in a centrifuge arrangement.
  • the centrifuge assembly includes a centrifuge having a drum, the drum having an inlet opening and an outlet opening. A gas pressure is formed in the drum and the drum is rotated about a drum axis so as to deposit a mixture under a rotary pressure on an inner side of the drum. In n the drum is an ejection element
  • the centrifuge assembly further comprises a
  • Expansion tank wherein in the expansion tank a low container pressure compared to the rotary pressure is formed.
  • outlet opening of the drum is at a receiving opening of the
  • the centrifuge arrangement according to the invention is used in the expansion process, in particular according to one of claims 1 to 13.
  • the relaxation process according to the invention has the above
  • Fig. 1 shows a first embodiment of the inventive
  • Fig. 2 shows a second embodiment of the inventive
  • Figure 1 shows a schematic representation of a first embodiment of the inventive centrifuge assembly 1 for performing a
  • the centrifuge assembly 1 comprises a
  • Centrifuge 2 with a drum 23, which comprises an inlet opening 21 and an outlet opening 22, and has a hollow cylindrical shape, preferably formed as a first hollow cylinder.
  • a gas pressure can be formed and the drum 23 is rotatable in the operating state about a drum axis T in such a way in a first rotational direction that on an inner side of the drum 23, in particular an inner
  • the centrifuge assembly 1 further comprises a
  • Expansion tank 4 wherein in the expansion tank 4, a lower container pressure can be formed compared to the rotary pressure.
  • Outlet opening 22 of the drum 23 is arranged at a receiving opening 41 of the flash tank 4 and the sedimented mixture so discharged with the ejection element 3 via the outlet opening 22 and the receiving opening 41 in the flash tank 4 from the drum 2, that the mixture under the lower container pressure of the expansion tank 4 can be explosively relaxed.
  • the inventive stripping process for treating a mixture in a centrifuge arrangement 1 can be described as follows.
  • the centrifuge assembly 1 comprises a centrifuge 2 with a drum 23, and the drum 23 an inlet opening 21 and a
  • Ejection element 3 is arranged.
  • a flash tank 4 is provided, wherein in the expansion tank 4 a compared to
  • Rotational pressure low tank pressure is formed.
  • the outlet opening 22 of the drum 23 is so arranged on a receiving opening 41 of the expansion tank 4 and the offset under the rotary pressure mixture so with the ejection element 3 on the
  • Centrifuge assembly 1 according to the invention can be used.
  • the drum 23, in particular the outlet opening 22 of the drum 23, is sealed, for example with an O-ring seal, on, preferably in, the receiving opening 41 of the expansion tank 4.
  • the drum 23 has a first abutment (not shown) which is arranged on the receiving opening 41 of the expansion tank 4.
  • the drum is rotatable at 1 to 10,000 revolutions per minute, preferably at 500 to 10 000 revolutions per minute, more preferably at 1000 to 4000 revolutions per minute, especially at 2000 to 4000
  • the drum can be thermally insulated against heat loss on the outside.
  • the ejection element 3 is in the form of a helical coil with an ejection surface 31, preferably as a screw conveyor 3, 301, is formed.
  • the ejection element 3 has a second abutment (not shown), which is arranged on a further receiving opening 43 of the expansion tank 4.
  • the ejection element is also sealed, for example with a further O-ring seal, on, preferably in, the other
  • Receiving opening 43 of the expansion tank 4 is arranged.
  • the ejection element 3 is in the operating state such a
  • the ejection element 3 can with an output speed of 0 to 300
  • the ejection element 3 also includes a
  • Expansion tank 4 is ejected. Furthermore, this includes
  • Discharge element 3 a hollow shaft 33 which has a hollow cylindrical shape, and preferably at least one inlet opening 34 and / or at least one outlet opening 35 has.
  • the hollow shaft 33 has a plurality of inlet openings 34 and a plurality of outlet openings 35 on the circumference.
  • a cavitation rotor 5 is provided which a
  • the cavitation rotor 5 is preferably between the
  • Inlet opening 21 of the drum 2 and the ejection element 3 is arranged, but may also be arranged at a different location in the drum 2.
  • the cavitation rotor 5 is rotatable about the rotor axis R in the operating state.
  • the cavitation rotor 5 is rotatable in a second direction of rotation, wherein the second direction of rotation is preferably opposite to the first direction of rotation.
  • On an inner circumferential surface 51 of the Kavitationsrotors 5 are one or
  • the blind holes 52 are arranged along the rotor axis R, ie axially, and / or radially to the rotor axis R, in a row, preferably in a plurality of rows of blind holes.
  • the inner mantle surface of the cavitation rotor between two blind bores is shaped such that it is conically or conically shaped, preferably in a direction increasing radially to the rotor axis R, that the mixture is in the direction of the Sackbohrept feasible, in particular forced is, and in radial direction to the rotor axis decreasing direction, ie in an interior of the
  • Kavitationsrotors 5 again ausschleuderbar and / or is movable.
  • the shape of the blind holes 52 depends on a rotor diameter and a
  • a sieve 6 is arranged, preferably a
  • the screen 6 can be designed in particular as a porous inner cylinder.
  • a longitudinal groove and / or a transverse groove may be provided on an outer surface of the screen 6 so that the separated liquid phase of the mixture and / or the recondensed fluid can be returned to the inlet opening 21.
  • the separated liquid phase of the mixture and / or the recondensed fluid can be guided along the lateral surface of the drum 2 and selectively returned via a pressure-holding valve in order to heat during the heating of the insertable
  • a discharge device 44 is also provided, so that the expanded mixture with the discharge device 44 from the flash tank 4 can be discharged.
  • Centrifuge assembly 1 may further include a condenser (not shown) and / or another auger (not shown).
  • the condenser may preferably be arranged on the expansion tank 4, so that the expanded mixture is liquefiable and thus it can be fed to a further fractionation or recycling.
  • the further screw conveyor may preferably be arranged on the expansion tank 4, preferably connected to this.
  • the centrifuge assembly 1 may further comprise a pump (not shown), preferably a high pressure solids pump, the pump preferably at the inlet port 21, particularly preferably outside the drum 23, and / or a steam generator (not shown), wherein the steam generator is preferably arranged at the inlet opening 21, particularly preferably outside the drum 23.
  • FIG. 2 is a schematic representation of a second one
  • FIG. 2 corresponds essentially to Figure 1, which is why only on the
  • the centrifuge 2 of the centrifuge assembly 1 can also be designed as a pusher centrifuge or as a double-acting centrifuge or as a multi-stage pusher centrifuge. As already to Fig. 1
  • the drum 23 is arranged on the expansion tank 4 and the ejection element 3, which is arranged in the drum 23 is a
  • Push floor device 3, 302. The push floor device 3, 302 is in the operating state so along the ejection axis A back and forth arranged that the mixture with the push floor device 3, 302, preferably with a thrust surface 32 of the sliding floor device 3, 302, along the ejection axis A movable is. Again, this includes
  • Ejection element 3 a hollow shaft 33 which has a hollow cylindrical shape, and the hollow shaft 33 has a plurality of inlet openings 34 and a plurality of outlet openings 35 on the circumference.
  • FIG. 3 is a schematic representation of a blind bore of the
  • Cavitation rotor shown. As already described for FIG. 1, one or more blind bores 52 are provided on the inner circumferential surface 51 of the cavitation rotor 5 (see FIG. 1). The inner circumferential surface 51 of the cavitation rotor 5 (see FIG. 1). The inner circumferential surface 51 of the cavitation rotor 5 (see FIG. 1).
  • Cavitation rotor 5 between two blind holes is formed as a needle tip 53, preferably with an at least partially in the radial direction to Rotor axis R (see FIG. 1) conically or conically tapered needle tip 53, so that the mixture with the needle tip 53 to the blind holes 52 is feasible, in particular is enforceable.

Landscapes

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

Abstract

L'invention concerne un ensemble centrifugeuse (1) pour la mise en oeuvre d'un procédé de détente, comprenant une centrifugeuse (2) avec un tambour (23) qui comprend une ouverture d'entrée (21) et une ouverture de sortie (22). Une pression de gaz peut se former dans le tambour (23) et le tambour (23) peut, en état de fonctionnement, tourner autour d'un axe de tambour (T) de telle façon qu'un mélange se trouvant sous une pression générée par la rotation peut se déposer sur une face interne du tambour (23). Un élément d'expulsion (3, 301, 302) est en outre monté dans le tambour (23). Dans un réservoir de détente (4) une pression de réservoir inférieure à la pression de rotation peut se former, l'ouverture de sortie (22) du tambour (23) étant disposée au niveau d'une ouverture de réception (41) du réservoir de détente (4) et le mélange déposé sous l'effet de la pression de rotation pouvant être évacué du tambour (23) au moyen de l'élément d'expulsion (3, 301, 302) vers le réservoir de détente (4), à travers l'ouverture de sortie (22) et l'ouverture de réception (41), de telle façon que le mélange puisse être détendu de façon explosive sous la pression inférieure du réservoir de détente (4). L'invention concerne en outre un procédé de détente pour le traitement d'un mélange dans un ensemble centrifugeuse (1).
PCT/EP2017/071188 2017-01-27 2017-08-23 Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange WO2018137793A1 (fr)

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US201762451371P 2017-01-27 2017-01-27
US62/451371 2017-01-27

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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/EP2017/071192 WO2018137795A1 (fr) 2017-01-27 2017-08-23 Centrifugeuse, procédé d'extraction permettant de traiter un mélange et utilisation d'une centrifugeuse
PCT/EP2017/071188 WO2018137793A1 (fr) 2017-01-27 2017-08-23 Ensemble centrifugeuse, procédé de détente pour le traitement d'un mélange
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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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/EP2017/071192 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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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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WO1996009882A1 (fr) 1994-09-28 1996-04-04 Cambi As Procede et appareil d'hydrolyse de matieres organiques
US6966989B2 (en) 2001-02-14 2005-11-22 Otv S.A. Method and installation for the thermal hydrolysis of sludge
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
DE10115381A1 (de) * 2001-03-28 2002-10-24 Heinkel Ag Stülpfilterzentrifuge
WO2011006854A1 (fr) 2009-07-13 2011-01-20 Cambi As Procédé et dispositif pour hydrolyse thermique et explosion de vapeur de biomasse

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WO2018137794A1 (fr) 2018-08-02
WO2018137792A3 (fr) 2019-07-18
WO2018137792A2 (fr) 2018-08-02

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