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WO2014170030A1 - Dispositif de traitement à haute pression dynamique de produits pompables - Google Patents

Dispositif de traitement à haute pression dynamique de produits pompables Download PDF

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Publication number
WO2014170030A1
WO2014170030A1 PCT/EP2014/001044 EP2014001044W WO2014170030A1 WO 2014170030 A1 WO2014170030 A1 WO 2014170030A1 EP 2014001044 W EP2014001044 W EP 2014001044W WO 2014170030 A1 WO2014170030 A1 WO 2014170030A1
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WO
WIPO (PCT)
Prior art keywords
pressure
product
pressure treatment
treatment chamber
phases
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.)
Ceased
Application number
PCT/EP2014/001044
Other languages
German (de)
English (en)
Inventor
Eberhard Schlücker
Nina EBEL
Markus HAINTHALER
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.)
Friedrich Alexander Universitaet Erlangen Nuernberg
Original Assignee
Friedrich Alexander Universitaet Erlangen Nuernberg
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 Friedrich Alexander Universitaet Erlangen Nuernberg filed Critical Friedrich Alexander Universitaet Erlangen Nuernberg
Publication of WO2014170030A1 publication Critical patent/WO2014170030A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/10—Preservation of foods or foodstuffs, in general by treatment with pressure variation, shock, acceleration or shear stress
    • A23B2/103—Preservation of foods or foodstuffs, in general by treatment with pressure variation, shock, acceleration or shear stress using sub- or super-atmospheric pressures, or pressure variations transmitted by a liquid or gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/002—Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/02—Feed or outlet devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00065—Pressure measurement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00164—Controlling or regulating processes controlling the flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying

Definitions

  • the invention relates to a device for the dynamic high-pressure treatment of pumpable products according to the preamble of patent claim 1.
  • WO 94/21 145 a method and an apparatus for high-pressure treatment of liquid products are known.
  • the device known from this document is used for static high-pressure treatment of the liquid substances, wherein the components of the pressure generating system are in direct contact with the product to be treated.
  • Various pressure treatment chambers are hydraulically coupled to each other.
  • a device according to the preamble of claim 1 is known for example from WO 02/45528 A1. This device is only suitable for the so-called batch mode.
  • the invention has for its object to provide a device of the type mentioned, which is more efficient operable. This object is achieved by a device with the features of claim 1. Advantageous developments are the subject of the dependent claims.
  • the apparatus for the dynamic high-pressure treatment of pumpable products has a pressure generator system which produces alternately high and low pressure phases in the product space of at least one pressure treatment chamber containing the product, wherein the high pressure phases amount to at least 50 MPa and wherein the pressure generator system comprises at least one pressure generator by means of a crankshaft at least drives a piston with Geradschubkurbeltrieb.
  • a pressure generating system enables a particularly energy-efficient industrial implementation of dynamic high-pressure treatment in a quasi-continuous and cost-operable device.
  • the at least one pressure generator drives a plurality, preferably a multiple of two or three, working in the phase offset piston and thus generates the high and low pressure phases in a preferably the number of pistons corresponding number of pressure treatment chambers.
  • the latter are not hydraulically coupled as in the prior art, but particularly energy-efficient mechanically coupled.
  • the expansion energy of a chamber can thus be converted into low energy pressure of the other chamber.
  • the at least one pressure generator is designed such that the high pressure phases can be generated with one or more successive piston strokes and can be superimposed with pressure variations.
  • Such a pressure generator makes it possible to achieve the desired high-pressure phase particularly energy-efficient and, depending on the number of piston strokes required, after only a short time.
  • a control and regulating device is provided by means of which the crank grinding movement of the pressure generating system based on one or more pressure measurements is regulated so that the pressure level of the high and low pressure phase in the case of targeted generation of high and low pressure plateaus kept substantially constant becomes.
  • the can Pressure measurements are carried out on or in the pressure treatment chambers or in or on pressure-carrying device parts. With the help of such a device, the pressure level can be kept largely constant even in case of leaks.
  • the at least one pressure treatment chamber to a hose made of elastic material which represents with its inner volume filled with the product product space and this hermetically separated from a surrounding hydraulic space, the tube geometry preferably a length / inner diameter ratio of at least 5 has.
  • the hermetic separation of product space and hydraulic space is essential in particular for the processing of products used in the food industry and the pharmaceutical industry.
  • the hose can be wound or rolled out in the pressure treatment chamber.
  • each product space has on its inflow and outflow side outside the associated pressure treatment chamber valves that shut off the respective pressure treatment chamber pressure-resistant in the high pressure phases and are operated only in the low pressure phases, so that the product during each low pressure phase by means of at least one product delivery through the at least one pressure treatment chamber is eligible.
  • the promotion of the product takes place only during a low-pressure phase, with a promotion of the product does not necessarily have to be performed in each low-pressure phase. It is clear that the inlet and outlet valves close immediately after completion of the delivery phase.
  • the valves are designed such that they open in the direction of the product space and thus kept closed by the pressure in the at least one pressure treatment chamber, and in the presence of one product feed pump per pressure treatment chamber, the valve on the product feed side preferably by insertion the flow rate is automatically moved and the valve on the product downstream side is a valve controlled by external force and in the presence of only one product delivery pump per plurality of pressure treatment chambers, all valves preferably with external force controlled valves are.
  • the inflow valve can replace the pressure-side valve of this pump or vice versa.
  • the at least one pressure generator in the form of a sliding link with sliding block is formed, in which an eccentrically arranged crank pin rotates on the crankshaft, wherein the at least one piston is connected to the frame of the sliding link and in an embodiment with two Piston these are opposite to each other connected to the frame of the slide link.
  • a pressure generator can therefore be designed so advantageous that the piston forces can be completely transferred via the gate frame on the opposite piston.
  • control unit is designed such that the motor for driving the at least one pressure generator executes a predetermined speed profile, measured in parallel to the currently prevailing in the at least one pressure treatment chamber pressure and the speed profile as a function of the measured pressure, if necessary, corrected is, and when reaching a low-pressure phase, the at least one product delivery pump and the or those controlled by external power valves are actuated according to predetermined periods. It is clear that before starting the next high-pressure phase, the valve or the valves are fully closed again.
  • FIG. 1 shows a schematic representation of a static pressure profile sHP and an exemplary, resulting dynamic pressure profile dHP according to the prior art
  • Fig. 2 (a) shows a diagram schematically shown with pressure curves in two pressure treatment chambers without speed-controlled motor, in which the pressure p plotted against time t, with phase-shifted sinusoids without periods of constant pressure according to the prior art
  • Fig. 2 (b) is a diagrammatic graph showing pressure waveforms in two speed-controlled engine pressure treatment chambers in which the pressure p is plotted against time t, with periods of approximately constant pressure according to the invention;
  • FIG. 3 shows a schematic diagram of an apparatus for the dynamic high pressure treatment of pumpable products with mechanical energy coupling of two pressure treatment chambers according to a first embodiment of the invention
  • FIG. 4 shows a schematic longitudinal section through a pressure generator of the device according to the invention in the form of a two-high pressure pump in a boxer arrangement with a sliding link;
  • FIG. 5 is a schematic diagram of an apparatus for dynamic high pressure treatment of pumpable products having a single pressure treatment chamber and a single pressure generator according to another embodiment of the invention
  • Fig. 6 is a schematic longitudinal section through a tubular pressure treatment chamber with a stretched hose according to a preferred embodiment of the invention.
  • FIG. 7 is a schematic diagram of an apparatus for dynamic high pressure treatment of pumpable products having two or more parallel pressure treatment chambers on each side of a single pressure generator according to another embodiment.
  • the present invention describes an energy-efficient industrial implementation of the already presented dynamic concept in a quasi-continuously operated energy-efficient and cost-effective system, hereinafter also called device 24, for high-pressure treatment of pumpable products with maximum pressure of at least 50 MPa.
  • device 24 for high-pressure treatment of pumpable products with maximum pressure of at least 50 MPa.
  • the product to be treated in the pauses between the high pressure phases cycle for cycle in the pressure treatment chamber under ambient pressure can be further promoted so that it has gone through until the exit of the pressure treatment chamber the required number of pressure cycles and thus cumulatively the necessary total pressure hold time. This creates a quasi-continuous process in which the pressure treatment chamber no longer has to be laboriously opened after each pressure treatment.
  • a pressure generator generates the required pressure profiles in a geometrically arbitrarily designed pressure treatment chamber, which is configured according to a preferred embodiment with an elastic hose such that the product located in the hose and the through the Pressure generator moving pressure medium absolutely safe, ie hermetically separated from each other.
  • the pressure transmission is accordingly through the tube wall on the product, and any material abrasion and wear, which arises for example on the dynamic seal of the pressure generator, therefore, can not be registered in the product.
  • In the pressure treatment chamber inlet and outlet of the product space valves are mounted, which shut off these during the high pressure load.
  • the product is conveyed exclusively in the low-pressure or depressurized phases, specifically in such a way that the lowest possible axial mixing occurs in the area through which the product flows to ensure the necessary total treatment time.
  • the forward-looking mixing (English: fronting) has a negative effect on the process, since then the volume fractions of the Product before leaving the required number of pressure phases leave the pressure treatment chamber.
  • the solution to this problem consists in the hose geometry mentioned (hose length / hose diameter> 5) of the product-flowed area within the pressure treatment chamber.
  • the valves are promptly closed after the delivery phase; Furthermore, the valve may have a targeted pressure loss on the downstream side.
  • a product feed pump which is preferably located on the inflow side of the pressure treatment chamber and which is capable of conveying the product partially through the pressure chamber.
  • the product feed pump then has to precisely as the single-cycle volume the nth part, or to compensate for the still occurring product forward mixing and the increased by a small number m increased (n + m) -th part of the total product volume within the pressure treatment chamber during the low pressure phases.
  • the pistons of the pressure generator and consequently also the pressure profiles in the pressure treatment chambers describe phase-shifted sinusoids 1, 2 without periods of constant pressure (Example of two pressure treatment chambers, see Fig. 2 (a)).
  • the kinematics of the pressure generator to be adapted to the conditions of the required dynamic pressure profile. This means enabling clearly defined high-pressure and low-pressure phases (or pressureless phases) by means of mechanical engineering measures.
  • the low pressure phases must additionally have a sufficient duration to carry out the product promotion in the pressure treatment chambers.
  • a multiple pump (high-pressure pump) consisting of two straight-action crank drives in the form of a pressure generating system 3, which has at least one pressure generator 4, is driven by means of a preferably speed-controlled electric motor 5 and preferably an intermediate gear 6, wherein the Multiple pump in the two pressure treatment chambers 10, 1 1 generates the required pressure profiles.
  • the gear 6 is in this case preferably a gear transmission, since this design works even at high, energetically favorable gear ratios both extremely play and thus reproducible and has only minor signs of wear.
  • the electric motor 5 is preferably a servomotor, DC motor or other motor design with good controllability and high torques both at high and at low speeds. This is controlled by a microprocessor or other control and regulating device (not shown).
  • This regulation is preferably supported by a strain gauges, which are applied to each of the at least one pressure treatment chambers 10, 11 (as a calibrated replacement for a pressure transducer) or a pressure transducer located in each hydraulic chamber, in that the measured actual pressure follows the desired setpoint specifications.
  • the amounts of the energy E compr and the re-expansion energy E exp are theoretically the same.
  • Multiple piston pumps often use this released energy to support subsequent compression or conveying operations.
  • this re-expansion energy is to be transferred as completely as possible to one or more pressure treatment units in parallel, but the pressure profile required for efficient treatment must be maintained at each pressure treatment unit.
  • a coupling of, for example, two pressure treatment chambers 10 eg with the pressure profile 14 according to FIG.
  • the energy recovered during the expansion of a pressure treatment chamber corresponds to ⁇ (see Fig. 2) that portion of the remindexpansionsenergy which was supplied to the coupled pressure treatment chamber to equalize the pressure in the two chambers of the compressed fluid in the form of the magnitude equal compression energy + ⁇ .
  • ⁇ see Fig. 2 that portion of the remindexpansionsenergy which was supplied to the coupled pressure treatment chamber to equalize the pressure in the two chambers of the compressed fluid in the form of the magnitude equal compression energy + ⁇ .
  • the amount corresponds to the maximum recoverable expansion energy 16, the amount of compression energy 17 to be applied (see FIGS. 2 (a), 2 (b)).
  • the electric motor 5 may also be used as a brake motor to reduce the pressure change rate.
  • the energy released at the engine can be recovered with the help of modern electrical engineering methods (eg DC motor as generator). This allows precise control of the compression and relaxation process.
  • the boxer arrangement of two linear thrust crank drives on a crankshaft, ideally in Schiebekulissenbau-, according to FIGS. 3, 4 and 7 is a preferred embodiment of the device 24 according to the invention. It is also possible, instead of the pressure generator 4 shown in Figs. 3, 4 and 7 in the form of a double pump such in the form of a triple pump (not shown) to use advantageous.
  • the piston heads 12, 13 in the pressure generator 4 are preferably designed without valves, so that a connection to the respective pressure treatment chamber without intervening fittings is achieved.
  • fault-prone valve circuits are omitted under high-pressure loading, and the energy can be largely completely recovered by simply suspending the motor drive force.
  • the entire pressure increase must occur within a piston stroke, and the stroke volume of a piston must therefore be greater than the compression volume of the entire liquid content in the associated pressure treatment chamber.
  • the pressure increase can also be achieved by several strokes.
  • the advantage of this embodiment would therefore be that the pressure generator can be made much smaller.
  • the compression and relaxation work can of course be distributed by appropriate valve circuits on several machines.
  • the generation of the high-pressure phases can be effected both by a single pressure generator and by a system of pressure generators connected in series, wherein the pressure generator which drives the crankshaft is preferably designed in the described boxer arrangement with sliding gate.
  • the additional machines are usually used here to bring a large part of the required compression volume at even moderate pressure levels in the hydraulic chamber, and a high pressure unit makes the remaining compression work until reaching the required maximum pressure.
  • Through this Arrangement can also be the pressure oscillations already mentioned in the high pressure area without intervening low-pressure phases can be realized by one of the pressure generator converts the required piston movements. Of course, this is also possible with only one pressure generator whose piston then performs correspondingly smaller movements for generating these vibrations. Even with such a series connection of pressure generators use of the re-expansion energy by the methods described above is possible.
  • the energy coupling of several pressure treatment chambers results in certain restrictions regarding the flexibility of the realizable pressure profiles.
  • the back expansion energy of the first pressure treatment chamber for product compression of the second, for example, equal durations and rates of pressure change arise in the compression and decompression phases.
  • the delivery phase can only have a maximum of the same duration as the high pressure phase, since it can take place only within the low pressure phase, which in turn has the same duration as the high pressure phase.
  • each pressure treatment chamber with its own pressure generator.
  • Such a device which is shown in Fig. 5, then basically has the same apparatus and functional structure as a device with a plurality of pressure treatment chambers (see Fig. 3), but then eliminates the plant components, which are necessary for the operation of the additional pressure treatment chamber ( n) would be required. Identical parts are given the same reference numerals in FIG. 5.
  • the back expansion energy in this embodiment can only be recovered by power electronic methods and then, in the case of storage, used to drive other machines in the plant (e.g., the product feed pump 57) or for a stroke portion of the subsequent compression stroke.
  • the at least one pressure treatment chamber has, according to a particularly preferred embodiment, a hose 33 made of elastic material which, with its inner volume and the volume adjoining the two hose ends as far as the valves 20 to 23, the product space 34 filled with the product represents.
  • Fig. 6 shows a longitudinal section through such a pressure treatment chamber.
  • the tube 33 may be located in the pressure treatment chamber generally in any spatial arrangement. However, in order to reduce the compression volume of the pressure medium, it is preferable to make it stretched or in orderly winding, leaving only small gaps between the inner wall of the pressure treatment chamber (including packing) and tube 33.
  • this pressure treatment chamber may have both the geometry of a container, a tube (see the embodiment shown in FIG.
  • the pressure of the at least one pressure generator now acts on the pressure medium via a feed line 46 or 56, the gaps 47 between the tube 33 and the pressure chamber wall 50, 51 increase since the compression volume of the product is compensated by inflowing pressure medium.
  • this requires a Schlaucheinlayered that can absorb the resulting loads (eg tensile load) without leaking or damaged. Therefore, as mentioned above, preferably an elastic, tensile hose material is used.
  • the hose attachment to the pressure treatment chamber product supply lines 52, 53 is advantageously carried out by sticking or attaching the hose ends on hose nozzles 54 and possibly fixing by means of clamps or rings 55, which ensure a seal on the full circumference of the hose inner surface.
  • hose transition points to the pressure treatment chamber should be carried out as possible without diameter jumps and gaps in order to avoid product deposits and thus to enable CIP cleaning without dismantling the pressure chamber.
  • all materials in the product-contacting area must be selected in accordance with the hygiene regulations.
  • the pressure treatment chamber can be made of materials with non-hygienic but preferably corrosion-resistant components due to the achieved by the tube 33 hermetic separation from the product.
  • the product valves are mounted on the outside of or near the high-pressure treatment chamber in such a way that a hygienically acceptable transition is given.
  • valves are constructed so that they open only in the direction of the pressurized product space 34 and thus can be kept closed by its internal pressure.
  • the product valves can perform all opening and closing operations completely during the low pressure phases and at the same time sufficiently early before the next pressure increase phase, so that an orderly valve movement with good guidance of the valve components without hindering pressure stress is possible.
  • a complete closing with precise guide characteristics is essential in high-pressure applications, since in the case of not optimally closed valves a relative movement of the valve closing body to the valve seat is possible. Such relative movement under simultaneous high pressure load inevitably generates wear due to friction between the closing body and the valve seat.
  • valve 20 In general, different valve designs can be used, eg ball valves or conical valves with a flat cone angle.
  • An exemplary design is the plate valve.
  • the closing body plate In the case of a flat valve seat or a valve seat designed with a low cone angle, the closing body plate always sits largely flat on it and then automatically finds a stable end position. Due to the load pressure, this plate is then only bent.
  • a preferably automatic product valve (valve 20) is used on the product inflow side of the pressure treatment chamber, on the downstream side, a valve controlled by external force is used.
  • an unwanted outflow of not completely pressure-treated product is thereby avoided.
  • the valve 21 or 23 on the downstream side to a targeted pressure drop, which opposes the flow of additional resistance and especially to avoid that the product leaves the pressure treatment chamber too early.
  • the pressure loss is preferably generated by partial closing or by a narrowed internal geometry of the downstream valve, but can also be generated by other measures on the downstream side, such as by a pipe constriction.
  • This pressure loss is adapted to the acceleration characteristics of the product feed pump and the flow characteristics of the product (eg viscosity).
  • the opening of the two valves before the start of the delivery phase preferably takes place simultaneously, since after reduction of the pressure in the pressure treatment chamber, no flow to be regulated still takes place in the product space.
  • an oscillating positive displacement pump as a product delivery pump 57
  • two automatic valves may be located in the pump head to allow the oscillating delivery.
  • the pressure-side valve of this pump can be replaced by the inflow valve 20, 22 or the inflow valve can be replaced by the pressure-side valve of the product delivery pump, since both valves the same Function of the backflow prevention of the process material in the plant meet.
  • only one product feed pump 57 and only one pressure treatment chamber 10 see embodiment of FIG.
  • valve 20 on the product inflow side is preferably a self-propelled by inserting the flow and the valve 21 on the downstream side is an externally controlled valve while in presence only one product delivery pump 57 and a plurality of pressure treatment chambers 10, 1 1 (see embodiment of FIG. 3) are all valves 20 to 23 preferably controlled by external force valves.
  • the product delivery pump 57 is a variety of pump types in question, which are executed hygienic conformity in the case of hygiene applications. They are operated only during the low-pressure phases, so that no pressure-resistant construction has to be observed.
  • an oscillating positive displacement pump may be used, however, e.g. can be used with servomotors cycle-controlled rotary displacement.
  • the metering task consists of one or more piston strokes defined in their number, with rotating pumps of a defined number of revolutions and number of revolutions.
  • this promotion can also suspend for one or more funding cycles, if required by the applied pressure profile.
  • this promotion in each low-pressure phase and over the entire low-pressure phase continues, but the delivery characteristic should be designed so that minimal fluid mass forces arise and thus the unfavorable Axialvermischung is reduced. It is clear that the product valves do not need to be opened in times of no product conveyance. The promotion of the product by means of the product delivery pump 57 through the at least one pressure treatment chamber takes place only when the low-pressure phase is reached therein.
  • the device 24 is preferably constructed such that as little unnecessary compression space is generated. Therefore, for example, high-pressure pipelines are made as short as possible, and the high-pressure piston reach close to the piston head inner wall.
  • the device preferably consists of at least two or a multiple of two (high pressure) pressure treatment chambers and half the number of mechanically coupled pressure generator units, each with two opposite piston heads, which are driven by a common motor.
  • the device may also comprise three or a multiple of three pressure treatment chambers and 1/3 of the number of pressure generator units.
  • the pressure treatment chambers are ideally placed or mounted close to each other in order to be able to use, if necessary, common protection devices, e.g. Protective enclosure around all high-pressure-carrying elements.
  • All surfaces and components that are in direct contact with the process fluid, namely the product, are designed to be hygienic if required.
  • a control and monitoring system controls the device functionally optimal and independently identifies undesirable developments by adding measurement values relevant for interference System features together. If required, these measured values are determined by strain gauges or pressure sensors on the pressure-bearing system components, by structure-borne sound sensors on the valves, the gearbox and the pressure generator, by monitoring the power consumption of the motor and by temperature sensors in the at least one pressure treatment chamber and at the sliding points of the pressure generator or the piston seal generated.
  • the software can independently identify, register and initiate appropriate countermeasures by the plant personnel by reporting or alarming, among other valve damage such as harmful closing operations or valve leakage and harmful developments in the pressure generator and the drive such as bearing damage, high frictional energy and bearing or Gleit vomspiel ,
  • This software thus serves both as a fault early detection system and as a fault detection system.
  • the pressure generator can also be formed on the basis of an equilateral triangle simultaneously acting on three pistons.
  • the pressure generator 4 may be connected on each side with a pressure treatment chamber or with a plurality of pressure treatment chambers in parallel construction.
  • FIG. 1 Another embodiment of the invention is shown schematically in FIG.
  • a pressure generating system 3 is provided, whose two sides are connected to at least two pressure treatment chambers, namely on the left side at least with the pressure treatment chambers 10, 60 and on the right side at least with the pressure treatment chambers 11, 61, in parallel construction.
  • the further pressure treatment chambers 60, 61 are provided on their Artszuström- and -abströmseite with valves 70 to 73 or may be provided depending on the driving style and on both sides or only on one side of the pressure generator 4 additional pressure treatment chambers may be arranged, which may also be equipped with appropriate valves for the product and the pressure medium.
  • valves 62 to 64 can be omitted.
  • one or more parallel pressure treatment chambers may be operated with a single pressure generator.
  • Fig. 5 in the simplest case without parallel connection, as mentioned above.
  • the device according to the invention can also implement all previous modes of operation of the prior art. It is in particular both a static and dynamic pressure profile without partial conveying of the product feasible by the product space opened only after completion of the entire pressure profile and then the entire contents of the product space is renewed by Nachellen the product.
  • the inventive device provided for the use of dynamic pressure profiles with partial conveying operations, since then the total process time can be reduced efficiently by using the low-pressure phases.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

Les installations actuelles de traitement à haute pression de substances pompables travaillent de préférence avec des profils de haute pression statique et, par conséquent, selon un mode opératoire en discontinu, également appelé traitement par lots. Les profils de pression dynamique selon l'invention, qui permettent d'introduire de manière ciblée des changements de pression et des pauses de pression dans le déroulement du processus, donnent dans bien des cas, par exemple dans le domaine de l'inactivation de micro-organismes, un rendement d'inactivation plus élevé. L'invention a pour objet de transposer ce concept dynamique dans une installation à grande échelle travaillant pratiquement en continu. Dans l'optique d'une exécution économique et offrant un bon rendement énergétique, l'invention décrit une configuration d'installation préférée tant en ce qui concerne le principe de fonctionnement des différents composants de l'installation en termes d'appareillage que leur technique de commande. Le dispositif (24) préféré se compose d'une ou plusieurs chambres de traitement sous pression (10, 11, 60, 61) fonctionnant en parallèle, dans lesquelles un système générateur de pression (3) à vitesse régulée établit les profils de pression dynamique voulus. En outre, cette installation offre la possibilité de transporter le produit hermétiquement séparé du milieu de pression pendant les pauses de pression en partie dans les chambres de traitement sous pression (10, 11, 60, 61) de façon à soumettre le produit au traitement à haute pression dynamique voulu de manière cumulative jusqu'à la sortie de la chambre.
PCT/EP2014/001044 2013-04-19 2014-04-17 Dispositif de traitement à haute pression dynamique de produits pompables Ceased WO2014170030A1 (fr)

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CN107976335A (zh) * 2017-12-15 2018-05-01 昆明理工大学 一种开放体系化学动力学高温高压实验装置
CN111729612A (zh) * 2020-07-07 2020-10-02 西南石油大学 高温高压釜中间气体浓度调配活塞压力装置及配气方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107976335A (zh) * 2017-12-15 2018-05-01 昆明理工大学 一种开放体系化学动力学高温高压实验装置
CN111729612A (zh) * 2020-07-07 2020-10-02 西南石油大学 高温高压釜中间气体浓度调配活塞压力装置及配气方法
CN111729612B (zh) * 2020-07-07 2021-11-30 西南石油大学 高温高压釜中间气体浓度调配活塞压力装置及配气方法

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