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    • 专利摘要:
    For the simultaneous ultrasonic cavitation treatment of liquid media of different composition, containers of any kind are arranged in a channel system with a liquid, where a plane acoustic standing wave is generated, which passes through the containers to be processed; the material from which the containers are made has a specific acoustic resistance which is (approximately) equal to that of the liquid filling the channel system and that of the liquid medium to be processed; the amplitude of the ultrasonic resonant vibrations exceeds the threshold of acoustic cavitation for the liquid media being processed at that time, taking into account the losses in passing through the container walls; the optimum processing temperature of the liquid media is dictated by the liquid in the channel system, the width between the walls of the channel system being equal to a multiple of a quarter of the length of the acoustic wave in the liquid of the channel.
    公开号:AT13317U1
    申请号:TGM50045/2012U
    申请日:2012-05-23
    公开日:2013-10-15
    发明作者:Andrey Aleksandrovich Getalov；Evgeny Evgenevich Dedyukhin；Marat Munirovich Giniyatullin；Aleksandr Semenovich Sirotkin
    申请人:Andrey Aleksandrovich Getalov；Evgeny Evgenevich Dedyukhin；Marat Munirovich Giniyatullin；Aleksandr Semenovich Sirotkin；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13317U1 2013-10-15
    Description [0001] The invention relates generally to the field of cavitation treatment of liquid media as well as media, especially media in which the specific content of water or other liquid phase exceeds 65-70% of the total mass. More particularly, the invention relates to a method for simultaneously ultrasonic cavitation processing of liquid media of different composition by placing containers with the liquid media within a mechanical vibration-executing pass-channel system in which conditions of acoustic resonance cavitation are realized.
    It is known that acoustic ultrasonic cavitation can be effectively applied in various fields of economics in which the following technological processes are realized (cf also the following references [1] to [6]: [0003] - dispersion; [0004] homogenization and emulsification [0005] blending [0006] disintegration [0007] deagglomeration [0008] In practice this includes the processes of obtaining multi-component media (emulsions, suspensions, aqueous solutions and systems) , the ultrasonic sterilization (disinfection) of water, milk, other liquid foods, etc.
    A method for the treatment of liquid media, which is explained in [1] and realized by means of an ultrasonic reactor, can be considered as the closest prior art. It consists in that an ultrasonic wave is generated in a liquid volume by means of a rod-shaped radiator, on whose front end a vibration source is arranged, in particular a piezoelectric radiator.
    There are many variants for determining the shape of the rod-shaped radiator and the possibility of fixing a plurality of piezo radiators on its front side; however, these are all aimed at increasing the vibration amplitude of the rod at the lower end and at the sidewalls; see. also [8].
    This is related to the fact that the zone of pronounced cavitation in practice has dimensions of a few centimeters from the surface of the vibrations. Therefore, the ground-level part of the rod is considered to be the most effective zone, as forms between the flat face of the radiator and the flat bottom of a standing wave in the liquid to be processed. It should be noted that it is difficult to dimension the diameter of the face greater than 50-70 mm.
    The emanating from the cylindrical surface of the radiator radiation has a much smaller amplitude of vibration and a cylindrical divergence. Considering the acoustic waves reflected from the walls of the outer cylindrical body, it can be estimated that it is practically impossible to achieve optimum operation with a stable, flat coherent ultrasonic standing wave in the liquid medium to be processed, by analogy with the insignificant region between the face of the liquid Radiator and the bottom of the cylinder body, to obtain.
    The complex pattern of continuous and reflected ultrasonic waves in the medium, the lack of wave coherence and a concentration of energy at a frequency makes it virtually impossible to disperse emulsions having a dispersed phase particle size of less than about 1, To get 0 pm; and the homogeneity level is at most 20% in the fundamental mode. Here, the volume of the treated liquid is limited.
    Another, alternative method of ultrasonic cavitation processing liquid 1/8 Austrian Patent Office AT 13 317 Ul 2013-10-15
    Media is realized in colloid mills, cf. [2], [0015] A sonic wave with cavitation effects is produced in a sonication chamber by means of periodically generated changing liquid movements from a rotating part of a rotor-stator system. This is an intermediate variant between acoustic and hydrodynamic cavitation. Such homogenizers are currently the most widely used. They are sufficiently simple, allow the treatment of large amounts of liquid and are much cheaper than the ultrasound systems. Good high-speed homogenizers make it possible to produce emulsions having a dispersed-phase particle size of about 1.5 μm in the fundamental mode, and the homogeneity level is at most 12-15%. Nevertheless, this method also has a number of principal limitations. This is due to the low efficiency of electromechanical systems (up to 10%), which limits the power of the ultrasonic wave to 1.5-2 W / cm2 and is not allowed to act on viscous media and treat static fluid quantities (in volume stator-rotor) and there are a whole series of other important limitations.
    The essence of the process comes closest to the recovery of a cosmetic emulsifier according to RU 2427362 C1.
    The increase in the amplitude of the vibrations of an acoustic wave in a liquid medium to be treated takes place by in-phase resonant vibrations of each large side of a channel system with rectangular cross-section and additional superposition of waves within the channel; Here, the inner distance is equal to the small side of the channel and equal to a multiple of a quarter of the length of the acoustic wave in the medium to be treated. This makes it possible to concentrate a maximum of energy on the resonant frequency of the vibrations of the large wall of the channel and to obtain a high intensity acoustic standing wave within the channel.
    Investigations have shown that the basic mode of dispersity in such processing conditions can be about 500 nm and less, the emulsion contains virtually no dispersion phase with a particle size of more than 1000 nm (1 pm), the emulsion contains 2-3 sometimes less emulsifier than usual. Here, colloid mills allow to obtain emulsions in which the particle size of the disperse phase does not start until 1000 nm (1 pm), with a larger amount of emulsifier, cf. [2].
    Part of the research was conducted at the XIV. International Conference, Research and Practice, " Cosmetics & Raw Materials: Safety & Efficacy " presented in October 2009, where they were awarded a second place and a diploma; there have been publications in journals, see [6].
    In such a case, the quality of the production increases; according to the criteria (the threshold) of cavitation, cf. [3, 4], and operating at maximum efficiency under resonant conditions become better characteristics in connection with the intensification of the simultaneously occurring physico-chemical, hydromechanical heat and mass exchange processes for the medium to be processed and the minimum particle size and homogeneity of the fatty phase obtained at the exit (Oil phase) guaranteed.
    This technology was used on an industrial scale in the cosmetics company " ZAO Laboratorija EMANSI " applied. The first product made using this technology, a hand cream "Anti Smell Smoke". (for smokers, against the action of nicotine and smoke on the skin of the hands), went through a complete cycle of certification tests (sanitary-epidemiological report [Hygiene Certificate] No. 77.01.12.915.P.006156.02.10 dated 03.02.2010 and Declaration of Conformity) obtained by independent laboratory tests " Spectrum " (Accreditation Certificate No. ROSS RU.0001.21 PSch50) were secured, with a corresponding test protocol no. 19 dated 22.12.2009.
    However, this technology has a number of limitations on their application, for example, when it is necessary to perform a simultaneous cavitation processing of liquid media of different composition using a single channel. or when small stationary (non-traversing) volumes of liquid media " on the conveyor belt " to edit. It is also not possible to use a single channel with the usual dimensions, if it is necessary to obtain at its output already the finished product; In this case, the linear length of the channel is not sufficient to achieve the required total duration of the sound effect and the flow of the liquid to be treated. A major obstacle is cavitation processing while maintaining the required temperature. It is known that in cavitation processing, a large amount of heat is released and intensive heating of the treated liquid takes place and therefore effective heat dissipation is a serious problem.
    In a number of cases, the temperature conditions of the processing of the entire liquid volume of paramount importance.
    The object of the invention is to provide the possibility of simultaneous ultrasonic Kavitationsbearbeitung liquid media with different compositions and ensuring the required temperature conditions here.
    This object is achieved in that containers are arranged with the liquid media of different composition to be processed in a channel system with a liquid, where a flat acoustic standing wave is generated, which passes through the container to be processed preferably perpendicular to the arrangement, that the material from which the containers are made has a specific acoustic resistance equal to or approximately equal to that of the channel system filling liquid and that of the liquid medium to be processed, the amplitude of the ultrasonic resonance oscillations being the acoustic cavitation threshold taking into account the transfer losses when passing through the walls of the container, and that the optimum processing temperature of the liquid media with the aid of the liquid in the channel ystem, where the width h between the walls of the channel system is equal to a multiple of a quarter of the length of the acoustic wave in the liquid of the channel, according to h = (k / 4) * (C / f), k = 1.2 , 3, ..., where f - is the frequency of the fundamental harmonic of the standing wave of the channel wall, in Hz; C - the speed of sound in the multiphase medium in, m / s; and h - the distance between the channel walls, in m, is.
    In the proposed method, the containers with the liquids to be processed may be of any type - it may be flow channels (tubes) or stationary containers (cuvettes).
    In Fig. 1, one of the possible embodiments of this method is shown, a channel has the ability to edit up to four different compositions at the same time. It is possible to ensure the flow of the liquid in the channel and the maintenance of the required temperature in the volumes to be treated. The volumes of liquid to be treated are contained in conventional polyethylene cups with a volume of 100 ml each. The acoustic resistance of polyethylene (density 0.92-0.94 g / cm3, velocity of the longitudinal waves about 1900-1950 m / s) differs from that of water by about 16%, and for the practical estimation of possible losses in the propagation of ultrasonic waves, the classical test was performed to illustrate the effect of cavitation on a film strip.
    In Fig. 2 and Fig. 3 foil strips, which were arranged inside the plastic cups, illustrated before or after the action. The duration of the sound effect was 60 s in total, the oscillation frequency of the channel walls was 24.65 kHz.
    The power supplied to the radiators was about 90 W, which corresponds to 40% of the maximum possible power in continuous operation.
    The width of the channel, in which the liquid volumes to be processed were arranged, was 6 cm, which is equal to the length of the acoustic wave in the water for this frequency. The walls of the canal are membranes with dimensions of 30 cm by 13 cm.
    It is known that for a rectangular membrane with fixed edges, the solution of the wave equation with respect to natural vibration frequencies in a Cartesian coordinate system has the following shape, cf. [9,10]:
    where c - is the propagation velocity of the waves on the plate; Kx, ky - wavenumbers whose values are determined by boundary conditions; Lx - the length of the side of the plate in the direction of the axis Ox is; Ly - is the length of the side of the plate in the direction of the axis Oy; and jx, jy - are integers equal to the number of peaks along the corresponding sides of the disk.
    In order to obtain a maximum effect of the membrane, it is necessary to realize a vibration state in the first mode when the number of wave peaks along both axes is equal to one. In this case, all points of the membrane perform vibrations with the same frequency and phase, with maximum deflection in the middle of the membrane.
    For the given dimensions of the channel walls, the calculated frequency is 24.4 kHz. In practice, slight deviations from the mathematical value, which are due to the conditions of attachment to the edges (tensile stress), the size of the deflection, etc., cf. [11].
    From Fig. 3 it can be seen that in practice the use of thin-walled polyethylene as a material where the containers can be arranged with the liquid to be processed is a cost effective and efficient solution and the acoustic losses can be neglected.
    Experiments were carried out in which two spiral polyethylene pipes were arranged in a channel through which two different liquids were pumped, which were subjected simultaneously to an effective cavitation treatment. An important part of the experiments was to ensure the required temperature conditions of the liquid volumes to be treated. Simultaneous preparation of four volumes of different cosmetic creams in plastic cups was performed, with volumes of 80 ml per dose. During the homogenization of the fat and water phase over a period of 10 minutes, a temperature of about 70 ° C was ensured by the heat generated and the temperature of the water in the channel. Subsequently, rinsing of water and a lowering of the temperature to 43-45 ° C was carried out and kept the temperature at this level.
    In this case, active additives and a vitamin complex were added, and it was also carried out a homogenization for another 10 minutes.
    In the last step, the temperature was lowered to 22-23 ^ degrees, which allowed a cooling of the cosmetic emulsion and the recovery of the finished product allowed. It took about 30 minutes for the entire cycle of preparation of the products.
    A test for stability, acidity, viscosity showed a complete agreement of the products obtained with the requirements of the standardization documents.
    Thus, the proposed method of ultrasonic cavitation processing liquid media showed the possibility of simultaneous treatment of media of different composition, both in the continuous and in the stationary variant, thus the possibility of applying processing conditions of any kind was detected , In this case, the temperature of the treated liquid media in the associated containers by the use of a liquid in the channel can be maintained as a heat carrier at a predetermined level. By controlling the flow rate of the liquid in the duct and by its temperature, the required technological cycle can be provided.
    LITERATURE
    [1] Bronin F.A, investigation of destruction by cavitation and dispersion of solids in a high-intensity ultrasonic field, work to obtain the degree of technical sciences, MISIS, 1967.
    [2] Cervjakov V.M., Odnol'ko V.G., Use of Hydrodynamic and Cavitation Phenomena in Rotary Apparatuses; Moscow, publisher Masinostroenie, 2008.
    Sirotjuk M.G., Experimental Investigations of Ultrasonic Cavitation, " Powerful Ultrasonic Fields ", publisher Rozenberg L.D., 1968.
    [4] Krasil'nikov V.A., Sonic and ultrasonic waves in the air, in water and in solids, Moscow, Fizmatgiz, 1960.
    [5] Bergman L., Ultrasound and Its Application in Science and Technology, Moscow, Inostrannaja Literatura, 1956.
    [6] V.I. Demenko, A.A. Getalov, T.V. Puckov, E.A. Choteenkova, an efficient method for reducing the emulsifier content in the production of a cosmetic emulsion, magazine "syr'e i upakovka". (Raw Materials and Packaging) No. 10 (101), p. 12.
    [7] Margulis M.A., Fundamentals of Acoustic Chemistry. Chemical reactions in acoustic fields - Moscow: Vyssaja skola, 1984.
    [8] Chmelev V.N., Popova O.V., Multifunctional Ultrasound Apparatus and its Application under the Conditions of Small Productions, in Agriculture and in the Household; Scientific monograph. Altai State Technical University "l.l. Polzunov ". - Barnaul: publishing house AltGTU.
    [9] Kosljakov N.S., Gliner E.B., Smirnov M.M., Partial Differential Equations of Mathematical Physics. Moscow, publishing house Vyssaja skola, 1970.
    [10] Aramanovic I.G., Levin V.I., equations of mathematical physics. Second edition. Moscow, Nauka, 1969.
    [11] Vibrations in the art. Reference book in 6 volumes; Editor of Celomej V.N., Moscow, Masinostroenie, 1979. 5/8
    权利要求:
    Claims (2)
    [1]
    Austrian Patent Office AT 13 317 Ul 2013-10-15 Claim 1. A method for the simultaneous ultrasonic cavitation treatment of liquid media of different composition by arranging containers with the liquid media within a, mechanically oscillating run-channel system, in the conditions of an acoustic resonance Cavitation be characterized, characterized in that containers of any kind are arranged in the channel system with a liquid, where a plane acoustic standing wave is generated, which passes through the containers to be processed, preferably perpendicular to their arrangement, that the material from which the containers are made, has a specific acoustic resistance equal to or similar to the specific acoustic resistance of the channel system filling liquid and the resistance of the liquid medium to be processed, that the amplitude of the ultrasonic Reso vibration exceeds the threshold value of the acoustic cavitation for the liquid media processed at that time, taking into account the transmission losses when passing through the walls of the container, and that the optimum processing temperature of the liquid media is predetermined by means of the liquid in the channel system, the width h between the walls of the channel system is equal to a multiple of a quarter of the length of the acoustic wave in the liquid of the channel; with h = (k / 4) * (C / f), k = 1,2,3, ...; where f - is the frequency of the fundamental harmonic of the standing wave of the channel wall, in Hz; C - is the speed of sound in the multiphase medium, in m / s; and h - the distance between the channel walls, in m, is. For this
    [2]
    2 sheets of drawings 6/8
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    引用文献:
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    法律状态:
    2019-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20180531 |
    优先权:
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