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WO2006006946A1 - Procede de traitement de milieux fluides et chauffage a induction afferent - Google Patents

Procede de traitement de milieux fluides et chauffage a induction afferent Download PDF

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Publication number
WO2006006946A1
WO2006006946A1 PCT/UA2004/000068 UA2004000068W WO2006006946A1 WO 2006006946 A1 WO2006006946 A1 WO 2006006946A1 UA 2004000068 W UA2004000068 W UA 2004000068W WO 2006006946 A1 WO2006006946 A1 WO 2006006946A1
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WO
WIPO (PCT)
Prior art keywords
tank
fluid medium
induction
circuited
heater according
Prior art date
Application number
PCT/UA2004/000068
Other languages
English (en)
Inventor
Oleksandr Dmitriyevich Podoltsev
Maksim Viktorovich Gachenko
Original Assignee
Fos International S.A.
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Filing date
Publication date
Application filed by Fos International S.A. filed Critical Fos International S.A.
Publication of WO2006006946A1 publication Critical patent/WO2006006946A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields

Definitions

  • the invention relates to the processes of fluid media treatment and to the structures of induction heaters thereof.
  • Fl u id medium refers to: first, water obtained from arbitrary natural sources, especially hard waters and/or water contained pathogenic microflora, second, such arbitrary liquid and gaseous media as true solutions and/or emulsions and/or suspensions that are contained dispersed (in particular, mechanical) natural and/or artificial impurities or admixtures, and third, such free-flowing media as corn, arboreal sawdusts or other dispersed vegetable materials, and as sand or other preliminary dispersed minerals;
  • Treatment refers to heating of fluid medium, which is placed within a tank or flows (in particular, passes) through the tank of an induction heater, under synchronous action of alternating electromagnetic field generated by an induction winding, heat and mechanical vibrations at frequency that corresponds (in particular, is multiple) to frequency variation of said electromagnetic field;
  • ⁇ Induction heater refers to a device equipped with a closed core, at least one induction winding, a tank for placing or passing of processed fluid medium, and at least one a short- circuited electroconductive heating element; this device can operate in periodic mode or, preferably, continuously;
  • «Short-circuited electroconductive heating elemenh refers to each resistance-type- heating element which - is placed within the tank of the induction heater in the action area of alternating electromagnetic field generated by the induction winding, and, when it operates, serves as an electrical conductor for induced eddy currents, and synchronously generates heat and mechanical vibrations under action of said alternating electromagnetic field.
  • heating serves as necessary pre-condition of further practical use of many fluid media.
  • the simplest examples are evaporation of water in arbitrary steam boilers and heating of circulating reused water in closed water-heating systems or fresh water in open hot-water supply systems respectively.
  • thermal sterilization for suppression of pathogenic microflora in such various fluid media as - drinking water and, especially, water for medical needs, cow's and, seldom, goat's etc. animal milk, usual fluid milk products, and milk-like products based on such vegetable raw materials as soy, nuts etc.
  • All said fluid media contain impurities or admixtures that can form sediments on heat- exchange surfaces.
  • Cavitational bubbles collapse is accompanied by heating of fluid medium and excitation of their mechanical vibrations mainly in audio frequency band. Intensity of these vibrations is sufficed for fine grinding of any hard and/or liquid admixtures to the liquid basis of fluid media and perceptible reduction of covering of cavitational devices walls and pipes by the sediments. Further, the common action of high temperature and intensive mechanical vibrations causes to thermomechanochemical degradation of not only microorganism cells but also arbitrary polymers. For instance, experiments with production and sterilization of soy-bean paste in cavitational devices were allowed to determine that deep thermomechanochemical degradation of vegetable protein and hydrogen sulphide emanation from defective samples of said paste are possible at definite modes of operation.
  • synchronous heating and mechanical vibrations can serve as enough universal means for treatment of various fluid media and substantial changes of their physical and/or chemical properties and/or chemical composition.
  • cavitational devices are applicable for treatment of such fluid media which are prepared on a liquid basis only and must operate under substantial overpressure in comparison with atmospheric pressure.
  • WO 98/42987 discloses a cavitational device based on a pipe for pumping of basic stream of processed fluid medium.
  • the pipe wall has at least one through-hole for injection of cavitation exciting stream (as a part of processed or other fluid medium) into said basic stream.
  • the cavitation process can be regulated in said devices by pressure changes on inlet of basic stream and/or on inlet of exciting stream in turbulization area only. Therefore, said devices must be used preferably for heating of water (in particular, in water-heating and hot water-supply systems), and preparation, as a rule, binary (for example, oil-water) emulsions or disintegration of turgent seeds of plants. But even such simple processes may provide for effective fluid media treatment (in particular, for speed disintegration of coarse admixture fraction to the fine-dispersed particles) if said cavitational devices are equipped with a contour for processed fluid medium recirculation or with means for cavitation strengthening. First variant increases overall dimensions and mass of the cavitational devices but second variant decreases reliability of theirs.
  • WO 02/016783 discloses such cavitational device that provides control of concentration of badly condensable gases (usually air) in fluid media and, in that way, control of cavitational bubbles collapse velocity (because this velocity decreases, when concentration of above-mentioned gases in cavitating fluid medium increases). Accordingly, the sets of means for aeration and/or deaeration of fluid medium stream before and/or after cavitation excitation by arbitrary turbulator were disclosed. It is allowed to increase reliability of cavitational devices in above-mentioned field of their application.
  • induction heaters must be taken as a base of these means.
  • their active power may be selected in a wide range according to total volume of processed fluid medium and controlled easily in the range from zero to maximally possible in order to exclude overheating of processed fluid medium.
  • Use of induction heating for fluid media treatment is already known [see, for example:
  • This memoir discloses, by the example of high-temperature (up to boiling point) heating of hard town water containing 6-7 mg-eq/kg salts, the method and the device that are the most similar to proposed further method and induction heater, namely: (1) method for fluid media treatment including the steps of: a) introduction of portion or stream of chemically heterogeneous fluid medium in induction heater, which comprises of a tank equipped with at least one means for inlet- outlet of fluid medium and with at least one short-circuited electroconductive heating element rigidly fastened within the tank and connected up to at least one induction winding through alternating electromagnetic field, when said heater operates; b) heating of this medium under action of alternating electromagnetic field to the temperature and during time, which are sufficed for achievement of desired results (in particular, to transformation of dissolved salts to fine-dispersed dust which can freely soar in the processed fluid medium), and c) evacuation of treated fluid medium from the induction heater; and
  • an induction heater for fluid media treatment includes: (a) a closed core including at least two rods and two connecting yokes;
  • the tank has: at least one internal wall that surrounds the selected core rod (in particular, together with the induction winding), usually one external wall mounted with a gap respectively to the internal wall, and (in particular, upper and lower) covering end walls which tight block a gap between said internal and external walls, at least one short-circuited electroconductive heating element rigidly fastened within the tank and, when said heater operates, connected with electromagnetic field to at
  • Each known short-circuited electroconductive-heating element is shaped as a ring which is immovable fastened within the tank coaxial to its internal wall.
  • each said ring has usually smooth (polished) surface, and their lateral sides are inclined to the horizontal line under an angle which exceeds the angle of mud salt particles friction in a quiet fluid medium.
  • the invention is based on the problem of creation - by change of conditions and means for electro-thermal action on fluid media - such method and such induction heater for fluid media treatment which could provide effective mixing of processed fluid media practically in all their volume and, hence, allow to substantial enhancement of field of induction heaters practical applications.
  • a method for fluid media treatment including: introduction of portion or stream of a fluid medium in an induction heater, which comprises of a tank equipped with at least one means for inlet-outlet of the fluid medium and at least one short-circuited electroconductive heating element placed within the tank, heating of this medium under action of alternating electromagnetic field generated by induction winding of said heater to a temperature and during a time that are sufficient for achievement of desired results, and evacuation of treated fluid medium, according to the invention the selected fluid medium is introduced into such tank in which at least one said short-circuited electroconductive heating element has capability of free mechanical vibration under action of alternating electromagnetic field, and this fluid medium is heated under synchronous action of alternating electromagnetic field and mechanical vibrations at frequency that corresponds with frequency variation of said electromagnetic field.
  • the proposed method is suitable for rapid and economical sterilization of water infected by such pathogenic microflora that is resistant to prolonged autoclave heating.
  • the first additional characteristic feature consists in that the treatment is carried out in continuous mode by an induction heater that has a flow-through tank equipped with at least one through-hole for inlet of makeup fluid medium along the heat-exchange surfaces of short-circuited electroconductive heating elements and at least one through-hole for outlet of treated fluid medium.
  • This method is preferable for treatment the fluid media on a liquid basis irrespective of feeding procedure ⁇ top-down or bottom-up).
  • the second additional characteristic feature consists in that the treatment is carried out in continuous mode by an induction heater that has a flow-through tank equipped with at least one upper through-hole for inlet of makeup fluid medium along the heat-exchange surfaces of short-circuited electroconductive heating elements and at least one lower through-hole for outlet of treated fluid medium.
  • This method is preferable for treatment such fluid media as free-flowing (friable) materials.
  • an induction heater for fluid media treatment which comprises of:
  • a closed core including at least two rods and two connecting yoke;
  • at least single-sectional induction winding which surrounds one selected core rod and is equipped with a means for connection to an alternating current source;
  • a tank which comprises of: at least one internal wall that surrounds the selected core rod, at least one external wall that is mounted with a gap respectively to said internal wall, and covering end walls which tight block the gap between said internal and external walls, at least one short-circuited electroconductive heating element placed within the tank and, when said heater operates, connected with electromagnetic field to at least one induction winding; and at least one means for inlet of makeup fluid medium and outlet of treated fluid medium, according to the invention at least one short-circuited electroconductive heating element is installed within the tank with capability of free mechanical vibration under action of the alternating electromagnetic field generated by induction winding.
  • each said short-circuited electroconductive heating element is shaped as an opened from ends axisymmetric shell. It allows effectively to pass vibration in the all volume of processed fluid medium and hinders to sludging on all heat- exchange area.
  • the second additional feature consists in that at least two said axisymmetric shells are placed with clearance space. It allows to align the mechanical loading in the all volume of processed fluid media if even their viscosity substantially exceeds viscosity of water.
  • each said axisymmetric shell is connected with at least one of the tank wall by permeable for a fluid medium resilient supports.
  • Such supports let have to ease of fastening of axisymmetric shells within the tank and practically free mechanical vibrations of theirs under action of the alternating electromagnetic field.
  • the fourth additional feature consists in that said axisymmetric shells are connected, in turn, to the opposite end walls of the tank. It allows: first, to arrange the axisymmetric shells on a different height, and, second, if the outlet of treated medium is placed near the induction winding, to feed the heater so that fluid medium stream, when it as far as heating, will be advancing to said winding and going into the area of maximal action of the magnetic field.
  • Forced vibrations of short-circuited electroconductive heating elements (i.e., axisymmetric shells) at frequency that is near to their resonance frequency hamper additionally covering of the heat-exchange surfaces by precipitate of such particles which were in fluid media initially or arise out at the time of their treatment.
  • the sixth additional feature consists in that at least one permeable for processed fluid medium hard support is placed within the tank, and each such support has at least one slot for free placing of end part of at least one said axisymmetric shell. Even if said supports are shaped as hard rings, their slots provide practically free deformation vibrations of the axisymmetric shells. If supports are produced as a few details, they may be easy placed within the tank on equal angular distances in order to minimize hydraulic resistance to the stream of processed fluid medium.
  • the seventh additional feature consists in that said hard supports and axisymmetric shells installed in said slots of these supports are arranged in at least two tiers, and supports of lower tier are installed on the lower end wall of the tank, whereas supports of each subsequent tier are fastened to the internal or external wall of the tank and placed with an axial gap in respect of the top of the axisymmetric shells of previous tier. It facilitates putting of said shells on vibration resonant mode and increases efficacy of thermomechanochemical fluid media treatment under synchronous action of heat, alternating electromagnetic field and intensive vibrations.
  • the eighth and ninth additional features that are related to the second or seventh above-mentioned additional features accordingly, consist in that said axisymmetric shells are produced: either from identical on specific electric resistance material and have different thickness increasing depend upon distance of said shells from the induction winding, or from materials those have different specific electric resistance increasing depend upon distance of said shells from the induction winding.
  • the tenth additional feature consists in that said heater is equipped by additional permanent magnetic field sources selected from the group consisting of - at least one pair of permanent magnets which are fastened near the opposite end walls of the tank and turned by antipole one to other in each pair, and at least two pair of current windings which, in pairs, surround the rods of the closed core near the opposite end walls of the tank and are equipped with means for opposing connection to a continuous current source.
  • additional permanent magnetic field sources selected from the group consisting of - at least one pair of permanent magnets which are fastened near the opposite end walls of the tank and turned by antipole one to other in each pair, and at least two pair of current windings which, in pairs, surround the rods of the closed core near the opposite end walls of the tank and are equipped with means for opposing connection to a continuous current source.
  • Interaction of alternating eddy currents induced in the axisymmetric shells and the permanent magnetic field first, substantially multiplies mechanical vibration of said shells and processed fluid medium, second, increases physical and chemical transformations of impurities and/or admixtures, which contain in the processed liquid media, under the action of magnetic field, and third, additionally decreases covering of heat-exchange surfaces by sediment.
  • the eleventh additional feature consists in that said heater comprises of - the closed core composed of three vertical rods, common lower yoke and common upper yoke, three-sectional induction winding, each section of which surrounds one rod of the closed core, and three separate flow-through tanks, each of which surrounds one sections of induction winding and is equipped with at least one such short-circuited electroconductive heating element shaped as an opened from ends axisymmetric shell that surrounds the internal wall of respective tank and proper section of the induction winding.
  • Such induction heater is intended for connecting to the three-phase network directly or through suitable frequency converter and can be used as high-performance device for simultaneous treatment of identical or different fluid media on liquid basis.
  • the twelfth additional feature consists in that said heater has: the common lower distributing manifold equipped with three branch tubes for inlet of makeup fluid medium into said tanks, and the common upper collecting manifold equipped with three branch tubes for outlet of treated fluid medium from said tanks.
  • the thirteenth additional feature consists in that said heater comprises of - the closed core composed of three vertical rods, common lower yoke and common upper yoke, three-sectional induction winding, each section of which surrounds one rod of said closed core, and one flow-through tank composed of one common external wall, that surrounds all sections of said induction winding, and three separate internal walls, each of which surrounds one section of said winding, and at least three short-circuited electroconductive heating elements, which are shaped as opened from ends axisymmetric shells and installed in at least one tier on permeable for a fluid medium resilient or hard supports co-axially to the proper internal tank walls, and such through-holes for inlet of makeup fluid medium into said tank and outlet of treated fluid medium from said tank, which are shaped in the end tank walls respectively.
  • the fourteenth additional feature consists in that: said heater has two-sectional single-phase induction winding, both sections of which are surrounded one vertical rod of said core with an axial gap, the means for connection of said sections to an alternating current source has one, common for both sections, input, and two, separate for each section, outputs through semiconductor diodes having opposite polarity, the tank is placed in said axial gap between the ends of said sections, internal and external tank walls are equipped with permeable for processed fluid medium supporting hoops which are fastened to said tank walls at least in two tiers and practically parallel to the ends of said sections, short-circuited electroconductive heating elements are shaped as at least two flat rings which are installed in said hoops with capability of free mechanical vibration practically horizontally, and through-holes for inlet of makeup fluid medium and outlet of treated fluid medium are broken through diametrically opposite parts of external tank wall.
  • Such heater is most suitable for sterilization of water for drink and medical needs.
  • the fifteenth additional feature consists in that said heater comprises of - the closed core having upper and lower horizontal rods and vertically mounted the «left yoke» and «right yoke», the coaxial single-phase induction winding and a horizontal flow-through tank, which surround one horizontal rod of said closed core, at least two flat rings as short-circuited electroconductive heating elements which are located within the tank vertically, and at that through-holes for inlet of makeup fluid medium and outlet of treated fluid medium are broken through diametrically opposite upper and lower parts of external tank wall.
  • This induction heater is intended for treatment of such fluid media as friable materials.
  • the sixteenth additional feature consists in that said heater is equipped with such additional sources of magnetic field as at least two permanent magnets which are placed between the external tank wall and the respective horizontal rod of the closed core. Interaction of induced eddy currents and permanent magnetic field multiplies substantially mechanical vibration of said flat rings and, respectively, treated friable material. Therefore, chocking-up of such materials within the tank eliminates practically.
  • the seventeenth additional feature consists in that said heater comprises of - the horizontally located closed core composed of three rods, common «front yoke» and common «back yoke», three-sectional induction winding each section of which is surrounded by one rod of said core, one flow-through tank composed of one common external wall, that surrounds all sections of said winding, and three separate internal walls, each of which surrounds one section of said winding, and three groups of such short-circuited electroconductive heating elements, each of which is shaped as a flat ring, here each group contains at least two said rings which are installed with axial gaps with capability of free mechanical vibration at least in vertical direction and all together surrounded the proper internal wall of said tank, at that through-holes for inlet of makeup fluid medium and outlet of treated fluid medium are broken through diametrically opposite upper and lower parts of external tank wall.
  • Such heater is equally suitable for treatment of fluid media on a liquid basis (mainly on condition of their bottom-up pumping through the tank) and free-flowing materials (that may be feeding into and evacuating from the tank by gravity top-down).
  • the eighteenth additional feature consists in that said flat rings belong to middle group are placed partly in axial gaps between said flat rings belong to their extreme groups. This is most expedient for treatment of such fluid media as friable materials. It is clear to each person skilled in art that arbitrary combinations of the basic invention and said additional features are possible. Thus, the described below preferable embodiments don't limit the measure of rights nowise.
  • FIG.1 shows schematic longitudinal section of an induction heater that comprises of a single- sectional single-phase induction winding and a vertical tank equipped with short-circuited heating elements that are formed as opened from ends axisymmetric shells and connected to the lower end wall of the tank by resilient supports;
  • Fig.2 shows schematic longitudinal section of a similar to shown on Fig.1 induction heater equipped with such vertical tank in which the axisymmetric shells are connected in turn to the upper and lower end walls of the tank by resilient supports;
  • Fig.3 shows schematic longitudinal section of induction heater that comprises of the single- sectional single-phase induction winding and the vertical tank, in which the axisymmetric shells are arranged in one tier to height, surrounded freely one another and leaned on three supports that are installed on the lower end tank wall;
  • Fig.4 shows the AA transversal section of induction heater showed on Fig.3
  • Fig.5 shows schematic longitudinal section of similar to shown on Fig.3 induction heater that comprises of the vertical tank, in which the axisymmetric shells are arranged in a few tiers to height, surrounded freely one another in each tier and leaned on the supports installed on the lower end tank wall for the lower tier and on the internal and/or external tank wall for the other tiers;
  • Fig.6 shows schematic longitudinal section of similar to shown on Fig.3 induction heater equipped with the vertical tank and such axisymmetric shells that have different thickness increasing depend upon their distance from the induction winding;
  • Fig.7 shows schematic longitudinal section of similar to shown on Fig.3 induction heater equipped with the vertical tank and such additional magnetic field sources as permanent magnets;
  • Fig.8 shows schematic longitudinal section of similar to shown on Fig.3 induction heater equipped with the vertical tank and such additional magnetic field sources as the additional windings connected to the continuous current source;
  • Fig.9 shows schematic longitudinal section of three-phase induction heater equipped with three single-sectional induction windings, three separate flow-through vertical tanks and short-circuited heating elements that are formed as opened from ends axisymmetric shells and installed within said tanks on supports;
  • Fig.10 shows the same, that Fig.9, with additional permanent magnets;
  • Fig.11 shows schematic longitudinal section of three-phase induction heater equipped with a common flow-through vertical tank and such short-circuited heating elements as opened from ends axisymmetric shells that are installed within the tank on hard supports coaxially to the separate induction windings;
  • Fig.12 shows schematic longitudinal section of induction heater equipped with a two-sectional single-phase induction winding, a horizontal flow-through tank, which is placed in the gap between said winding sections, and such horizontal short-circuited electroconductive heating elements that are formed as flat rings and surrounded one of the vertical rods of the closed core;
  • Fig.13 shows schematic electric circuit for connecting of two sections of single-phase induction winding, that is showed on Fig.12, to the alternating current source;
  • Fig.14 shows schematic longitudinal section of induction heater equipped with a single- sectional single-phase induction winding, a horizontal flow-through tank surrounded the upper rod of the vertical closed core, vertical short-circuited electroconductive heating elements that are formed as flat rings, and such additional magnetic field sources as permanent magnets;
  • Fig.15 shows three-phase induction heater equipped with a horizontal closed core, a common flow-through tank, and vertical short-circuited electroconductive heating elements that are formed as flat rings;
  • Fig.16 shows schematic transversal section of the induction heater showed on Fig.15. Best Mode Carrying out the Invention
  • any induction heater according to the invention contains: a closed core 1 , that is usually produced from laminated electric steel (for operation mainly at industrial frequency 50 or 60 Hz) or from suitable ferrite (for operation at high- frequencies exceeding 1 kHz) and includes at least two rod (not numbered especially) and two connecting yoke (also not numbered especially); at least a single-phase (and multiturn, as a rule) induction winding 2, which is surrounded one selected rod of said core 1 and fed through at least one suitable means for its connecting to an external alternating current source; a tank 3 that may be produced from an electroconductive material (for example, stainless steel), or from such dielectric material as, for example, polycarbonate, teflon or other heat-resistant plastic; the tank 3 has not numbered especially: at least one internal wall which surrounds the selected rod of closed core 1 (usually together with the respective induction winding 2), at least one external wall which is located with a gap relative to
  • Embodiments of induction heater according to the invention can be very various.
  • the closed core 1 has two practically vertical rods and two practically horizontal yokes.
  • the single-phase winding 2 surrounds one of said rods tight and is fed by external alternating current source through an arbitrary available connective means.
  • the tank 3 has coaxial preferably cylindrical external and internal walls, at least one inlet and at least one outlet through-holes that are broken in mentioned end walls, and is equipped, as a rule, with a few short-circuited heating elements 4.
  • Said element 4 can be shaped as an opened from ends axisymmetric (preferable cylindrical) shells. These shells 4 surround coaxially one another with circular gaps and, for providing of capability of their free mechanical vibration, can be connected to at least one of the tank 3 walls by permeable for a fluid medium resilient supports 5.
  • Said shell elements 4 can be attached with the resilient supports 5 either on the lower end wall of the tank 3 only (Fig.1) or, in turns, to the opposite lower and upper end walls of the tank 3 (Fig.2).
  • Said hard supports 5 can be shaped as not shown on the drawings rings equipped with at least one radial through-hole (for free flow of processed fluid medium), and with circular slots on their supporting sides (for free placing of said shell elements 4 ends). It is more desirable to make the hard supports 5 as at least two (and, preferable, no less than three) separate ring sectors which have, from the supporting sides, the slots for free placing of the ends of said shell elements 4 (see Figs 3, 4 and 5). It eases flow of processed fluid medium through gaps between the tank 3 walls and/or said elements 4.
  • a few shell elements 4 are located coaxially in any tier on different distances from said induction winding 2, they can be produced - from an identical on specific electric resistance material, if thickness of said shells 4 increase depend upon their distance from the induction winding 2, or from different on specific electric resistance materials. In this case, said shells 4 can have practically equal thickness but mentioned specific electric resistance must increase depend upon distance of theirs from the induction winding 2.
  • the induction heater is equipped with such additional permanent magnetic field sources as, for example: at least one pair of permanent magnets 6 which are fastened near the opposite end walls of the tank 3 and turned by antipole one to other in each pair (see Fig.7), or at least two pair of current windings 7 which, in pairs, surround the rods of the closed core 1 near the opposite end walls of the tank 3 and are equipped with a means for their opposing connection to an external continuous current source (Fig.8).
  • High-powered (more than 10 kW) induction heater according to invention is equipped preferably with such closed core 1 that have three rods and with three-sectional induction winding 2, each section of which surrounds one rod of said core 1 (Figs 9, 10, 11, 15, 16).
  • Fig.9 shows the heater having closed core 1 composed of three vertical rods and common lower and upper yokes.
  • This heater comprises of three separate flow-through vertical tanks 3, and short-circuited heating elements 4 shaped as opened from ends axisymmetric shells which are installed within said tanks 3 on the hard support(s) 5.
  • Each tank 3 of said heater can be equipped with such additional permanent magnetic field sources as, for example, permanent magnets 6 shown on Fig.10.
  • the three-phase induction heater can be connected (see Figs 9, 10): to the source of makeup fluid medium - through not numbered especially common distributing manifold equipped with the lower branch tubes, and to the user (or downtank) of treated fluid medium - through also not numbered especially upper collecting manifold equipped with the upper branch tubes.
  • the three-phase induction heater can have the common flow-through vertical tank 3 composed of one external wall surrounded all sections of three-phase winding 2, and three internal walls each of which surrounds one section of said winding 2. Through-holes for inlet of makeup fluid medium and outlet of treated fluid medium are broken in opposite end walls of the tank 3.
  • This heater (see Fig.12) comprises of: the closed core 1 composed of not numbered especially practically vertical rods and practically horizontal yokes, the two-sectional single-phase induction winding 2, sections 2a and 2b of which together surround one of the rods of said core 1 and are mounted with an axial gap, the practically horizontal flow-through tank 3 placed in said gap between the 2a and
  • the means for connecting of said winding sections 2a and 2b to an external alternating current source comprises of one common for both sections input 8 and two separate outputs through semiconductor diodes 9 with opposite polarity (see Fig.13).
  • flat ring elements 4 can be used as heat sources and mechanical vibrators for treatment of free-flowing (friable) materials.
  • Induction heaters for this purpose must be equipped with closed cores 1 having horizontally located rods.
  • Fig.14 shows a simplest example of such induction heater that comprises of the closed core 1 composed of upper and lower horizontal rods and vertical «left yoke» and «right yoke», the single-sectional single-phase induction winding 2, and the horizontal flow- through tank 3 surrounded one horizontal (in particular, upper) rod of said core 1.
  • Through- holes for inlet-outlet of fluid medium are broken in diametrically opposite upper and lower parts of the external tank 3 wall.
  • At least two vertical flat rings as short-circuited electroconductive heating elements 4 are installed freely within the tank 3 in a row along the rod of closed core 1.
  • a cylindrical hub or preferable, a sector of such hub
  • the depth of each said slot exceeds maximally possible amplitude of mechanical vibrations of said elements 4 under action of alternating electromagnetic field generated by the induction winding 2.
  • the heater can be equipped with such additional magnetic field sources as, preferably, at least two permanent magnets 6.
  • These magnets 6 can be located in the gap between the external tank 3 wall and said rod of closed core 1 on conditions that their like poles are unidirectional as a rule. Nevertheless, it is possible such arrangement of permanent magnets 6 as was described above with reference on Fig.7, i.e. by antipole one to other in each pair.
  • Fig.15 shows one more the three-phase induction heater, which comprises of: the horizontally located closed core 1 composed of three rods, a common «front yoke» and a common «back yoke», such three-sectional induction winding 2, each section of which surrounds one rod of said closed core 1 and, when heater operates, is connected to one of phases of three- phase industrial network, such flow-through tank 3, which comprises of one common external wall surrounded the all sections of induction winding 2 and three separate internal walls, each of which surrounds one section of said winding 2, and three groups of such short-circuited electroconductive heating elements 4, each of which is shaped as a flat ring, here the said ring elements 4 are installed in each group with axial gaps one to other and all together surround the proper internal tank 3 wall, and through-holes for inlet of makeup fluid medium and outlet of treated fluid medium are broken through diametrically opposite upper and lower parts of said external tank 3 wall.
  • Each said group comprises of at least two said flat ring elements 4. They are installed freely within the tank 3 in a row along the proper rod of closed core 1 on proper support 5.
  • Each such support 5 is formed as cylindrical hub (or preferable, a sector of such hub) equipped with not numbered especially vertical slots. The depth of each said slot exceeds the maximally possible vibration amplitude of elements 4 under action of alternating electromagnetic field of the proper said winding 2 section.
  • Such hard supports 5 provide of free mechanical vibration of said ring heating elements 4 at least in vertical direction.
  • the flat ring short-circuited electroconductive heating elements 4 belong to middle group are placed partly in axial gaps between said elements 4 belong to their extreme groups (see Fig.16). It allows to reduce the overall dimensions of heater.
  • each induction winding 2 generates alternating electromagnetic field having such volume electromagnetic power concentration which is determined by general power consumption and useful capacity of the tank 3, further, electromagnetic oscillations excite and deform of electron shells of atoms composing arbitrary processed fluid medium (that causes to changes of physical and chemical properties and reactivity of said medium components), any short-circuited electroconductive heating elements 4 generate of heat (under action of eddy currents) and mechanical vibrations (under action of alternating electromagnetic field) and transfer of theirs into processed fluid medium keeping time with electromagnetic oscillations and intensity depending on active power consumption and viscosity of said fluid medium, and, finally, all these synchronous interchanges of energy and mass exchange (that occur intensively if even tank 3 is produced from dielectric material and equipped with one short-circuited electroconductive heating element 4 only) cause to practically uniform deep thermomechanochemical treatment of fluid medium.
  • Such magnetic field sources as permanent magnets 6 or current windings 7 provide to the additional (accordingly, passive or active) regulation of said processes.
  • method for fluid media treatment using arbitrary induction heater includes the following steps: 1) conformably to periodic mode:
  • the induction heater was produced for experiments to evaluation of practicability of the invention.
  • Example 1 Treatment of mine water.
  • Example 2 Treatment of water infected by pathogenic microflora.
  • the distilled sterile water was inoculated by culture broth contained 5 g/l biomass of the pathogenic microorganism Pseudomonas mendocina P-13. This mix was diluted to concentration 10 5 cells/ml. Six samples of obtained cell suspension, each of which had volume about 2,5 /, are used, namely: one sample - for check experiment, and five samples - for periodic treatment using the described above induction heater. Conditions of said treatment are indicated in the table 2.
  • Synchronous action of alternating electromagnetic field, heat and mechanical vibration in induction heaters provides extraordinarily wide possibilities for thermomechanochemical treatment of arbitrary heterogeneous fluid media for the change of their physical and/or chemical properties and chemical composition.
  • Induction heaters for such treatment may be produced serially at present machine- building plants using available materials.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

L'invention concerne un procédé de traitement de milieux fluides consistant à introduire une partie ou un flux d'un milieu fluide d'appoint chimiquement hétérogène dans un réservoir d'un appareil de chauffage à induction et à chauffer ce milieu soumis à l'action synchrone d'un champ électromagnétique alternatif, de chaleur et de vibrations mécaniques à une fréquence correspondant à la variation en fréquence dudit champ électromagnétique. Ce procédé est mis en oeuvre au moyen de l'appareil de chauffage à induction présentant ledit réservoir dans lequel est placé au moins un élément de chauffage électroconducteur (4) dans une zone de chauffage avec une capacité de vibrations mécaniques libres sous l'effet du champ électromagnétique alternatif généré par un bobinage à induction (12). Dans ces conditions, la couverture des surfaces d'échange thermique par des sédiments diminue sensiblement même si des milieux fluides visqueux ou friables sont à traiter.
PCT/UA2004/000068 2004-07-09 2004-09-27 Procede de traitement de milieux fluides et chauffage a induction afferent WO2006006946A1 (fr)

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UA20040705591A UA75778C2 (en) 2004-07-09 2004-07-09 A method for processing liquid media and an induction heater for realizing the same
UA20040705591 2004-07-09

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WO2008002282A1 (fr) * 2006-06-29 2008-01-03 Fos International S.A. procédé de décontamination de déchets radioactifs liquides (variantes) et sorbant sélectif vis-à-vis du Cs
WO2013063977A1 (fr) * 2011-11-01 2013-05-10 Wu Ronghua Dispositif et procédé de chauffage à double induction électromagnétique à fréquence de courant triphasé pour liquide
WO2017045434A1 (fr) * 2015-09-14 2017-03-23 江南大学 Système de réaction à induction magnéto-électrique circulaire et application associée
US9757485B2 (en) 2015-08-28 2017-09-12 Michael Papadopoulos System and method for fluid sterilization
US10512701B2 (en) 2015-08-28 2019-12-24 Michael Papadopoulos System for fluid sterilization for a vessel
CN110746030A (zh) * 2019-09-25 2020-02-04 北京环健畅想量子科技有限公司 一种制备小分子团水的方法
US10899638B2 (en) 2018-01-31 2021-01-26 Organocat, LLC Method and system for water electromagnetic activation and active metals generation
CN112641960A (zh) * 2011-12-28 2021-04-13 雅培制药有限公司 利用感应加热来减少生物携带的方法和设备
US20210331134A1 (en) * 2020-04-27 2021-10-28 Joseph Brifman Micro-Pulse Micro-Arc Processing in Rotating Electromagnetic Fields
CN113856583A (zh) * 2021-06-15 2021-12-31 上海飞旋通信工程有限公司 一种流体处理棒及饮水机
US12357713B2 (en) 2016-12-22 2025-07-15 Abbott Laboratories Inductive heating systems and methods of controlling the same to reduce biological carryover

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RU2483513C1 (ru) * 2011-12-29 2013-06-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" Установка для тепловой и магнитной обработки семян
RU187953U1 (ru) * 2018-12-28 2019-03-26 федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) Обогреватель емкости

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US6056884A (en) * 1997-11-25 2000-05-02 Japan As Represented By Director Of National Food Research Institute, Ministry Of Agriculture, Forestry And Fisheries Continuous liquid pasteurizing apparatus and a method therefor
WO2001019734A1 (fr) * 1999-09-14 2001-03-22 Imi Cornelius (Uk) Limited Appareil de traitement de l'eau
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008002282A1 (fr) * 2006-06-29 2008-01-03 Fos International S.A. procédé de décontamination de déchets radioactifs liquides (variantes) et sorbant sélectif vis-à-vis du Cs
WO2013063977A1 (fr) * 2011-11-01 2013-05-10 Wu Ronghua Dispositif et procédé de chauffage à double induction électromagnétique à fréquence de courant triphasé pour liquide
CN112641960B (zh) * 2011-12-28 2023-01-06 雅培制药有限公司 利用感应加热来减少生物携带的方法和设备
CN112641960A (zh) * 2011-12-28 2021-04-13 雅培制药有限公司 利用感应加热来减少生物携带的方法和设备
US12115266B2 (en) 2011-12-28 2024-10-15 Abbott Laboratories Methods and apparatus to reduce biological carryover using induction heating
US11452787B2 (en) 2011-12-28 2022-09-27 Abbott Laboratories Methods and apparatus to reduce biological carryover using induction heating
US9757485B2 (en) 2015-08-28 2017-09-12 Michael Papadopoulos System and method for fluid sterilization
US10512701B2 (en) 2015-08-28 2019-12-24 Michael Papadopoulos System for fluid sterilization for a vessel
WO2017045434A1 (fr) * 2015-09-14 2017-03-23 江南大学 Système de réaction à induction magnéto-électrique circulaire et application associée
US10322396B2 (en) 2015-09-14 2019-06-18 Jiangnam University Circulating magnetoelectric-induction reaction system and application thereof
US12357713B2 (en) 2016-12-22 2025-07-15 Abbott Laboratories Inductive heating systems and methods of controlling the same to reduce biological carryover
US10899638B2 (en) 2018-01-31 2021-01-26 Organocat, LLC Method and system for water electromagnetic activation and active metals generation
CN110746030A (zh) * 2019-09-25 2020-02-04 北京环健畅想量子科技有限公司 一种制备小分子团水的方法
US20210331134A1 (en) * 2020-04-27 2021-10-28 Joseph Brifman Micro-Pulse Micro-Arc Processing in Rotating Electromagnetic Fields
CN113856583A (zh) * 2021-06-15 2021-12-31 上海飞旋通信工程有限公司 一种流体处理棒及饮水机

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