WO2019093406A1 - 固液分布検出装置 - Google Patents
固液分布検出装置 Download PDFInfo
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- WO2019093406A1 WO2019093406A1 PCT/JP2018/041434 JP2018041434W WO2019093406A1 WO 2019093406 A1 WO2019093406 A1 WO 2019093406A1 JP 2018041434 W JP2018041434 W JP 2018041434W WO 2019093406 A1 WO2019093406 A1 WO 2019093406A1
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- solid
- separation column
- liquid separation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C1/00—Concentration, evaporation or drying
- A23C1/06—Concentration by freezing out the water
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/02—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation containing fruit or vegetable juices
- A23L2/08—Concentrating or drying of juices
- A23L2/12—Concentrating or drying of juices by freezing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
- B01D9/04—Crystallisation from solutions concentrating solutions by removing frozen solvent therefrom
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
- G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
Definitions
- the present invention relates to a solid-liquid distribution detection device that detects solid-liquid distribution of contents in a solid-liquid separation column of a freeze-concentrator.
- the freeze concentration method is known as one of the methods of concentrating a fluid.
- a solid-liquid separation column contains the fluid to be treated (content) to be concentrated and is cooled.
- the cooling produces ice crystals in the fluid to be treated, and the fluid to be treated is concentrated by producing ice crystals.
- the ice crystals and the concentrated treated fluid are separated by a solid-liquid separation column.
- the inventor of the present invention also proposes such a freeze concentration method, and a method of producing a concentrated product using a freeze concentration device (Patent Documents 1 and 2).
- the ice crystals move to the upper side of the column, and the treatment fluid concentrated by the formation of the ice crystals moves to the lower side of the column. This is considered to be caused by the difference in flow and specific gravity of the fluid to be treated in the solid-liquid separation column.
- a portion where ice crystals gather and fill is called an ice bed layer.
- it is required to properly manage the height of the lower end of the ice bed in the solid-liquid separation column.
- the ice bed layer is a range in which ice crystals rising to the upper part in the solid-liquid separation column are filled and compressed to have a sherbet-like appearance due to the specific gravity difference and the flow of the fluid to be treated in the solid-liquid separation column.
- a layer of concentrated treated fluid without a full of ice crystals Below the ice bed layer is a layer of concentrated treated fluid without a full of ice crystals, and the lower end of the ice bed is in contact with the upper end of the layer of concentrated treated fluid.
- the management width of the lower end height of the ice bed is approximately ⁇ 10 cm from the reference position.
- the management width of the lower end of the ice bed in the solid-liquid separation column deviates from the range of about ⁇ 10 cm from the reference position, the ice bed collapses and the milk solid content becomes It may leak to the separated water side and the concentration operation may become impossible.
- a hole is formed in a part of the ice bed so as to pass through the upper and lower sides, and the concentrated milk on the lower side of the ice bed flows out to the upper side of the ice bed through this hole and the concentration operation can not be performed.
- an ice crystal and a treated fluid concentrated by the generation of the ice crystal are mixed in a sherbet shape.
- the lower end of the ice bed is very hard to see by human eyes, and monitoring by visual observation has a limit in measurement accuracy, which is a bottleneck for operation automation of the freeze concentration apparatus.
- the lower end of the ice bed is very difficult to distinguish, and the measurement accuracy is poor because the measurement error and the variation of the measured value by people are large. For this reason, control of ice bed lower end height is performed by a worker's manual operation, and operation of the freeze-concentrator has not been attempted yet.
- An object of the present invention is to propose an apparatus for detecting solid-liquid distribution in a solid-liquid separation column in a freeze-concentrator used in a freeze-concentrating method.
- a solid-liquid distribution detection device for detecting solid-liquid distribution of contents in a solid-liquid separation column of a freeze-concentrator, comprising: Sound wave emitting means for emitting a sound wave toward the surface of the solid-liquid separation column; Measurement means for measuring a resonance waveform of the column surface; Analysis means for analyzing the resonance waveform measured by the measurement means; A determination unit that determines a solid-liquid distribution state of contents in the solid-liquid separation column based on the analysis result of the analysis unit; Solid-liquid distribution detection device equipped with.
- the determination means compares the resonance waveform of the sound wave analyzed by the analysis means with the inherent resonance waveform set in advance according to the vibration characteristics of the contents in contact in the solid-liquid separation column, The solid-liquid distribution detection device according to [1], wherein a solid-liquid distribution state of contents in the liquid separation column is determined.
- the determination means determines, as the inherent resonance waveform, a resonance waveform specific to the ice crystal layer of the content, a resonance waveform specific to the concentrate liquid layer of the content, the ice crystal layer and the concentrate liquid layer
- the solid-liquid distribution detection device according to [2] having a resonance waveform inherent to the boundary layer.
- the solid-liquid distribution detection device according to any one of [1] to [3], comprising moving means for moving the sound wave emitting means and the measuring means in the vertical direction of the solid-liquid separation column.
- the solid-liquid distribution detection device according to [5] or [6], wherein the sound wave emitting means has one or more sound sources.
- solid-liquid distribution in a solid-liquid separation column for separating ice crystals and a treated fluid concentrated by the formation of ice crystals is obtained.
- An apparatus for detecting can be provided.
- the inventor of the present invention examines detection and determination of solid-liquid distribution of contents in a solid-liquid separation column of a freeze-concentrator by applying acoustic analysis technology, and solid-liquid distribution using acoustic analysis technology
- the present invention has been completed because it was found that the measurement of The inventor of the present invention noted that when the sound wave is emitted to the solid-liquid separation column of the freeze-concentrator, the resonance of the column surface is different depending on the vibration characteristics of the contents contacting inside the column. It has been found that by measuring the waveform and performing predetermined acoustic analysis processing on the measured resonant waveform, it is possible to determine the solid-liquid distribution state in the solid-liquid separation column based on the analysis result.
- the detection sensitivity of the measuring instrument is not sufficient to accurately measure the resonance of the column surface at the time of sound emission, and the method of detecting solid-liquid distribution by sound is not practical.
- the solid-liquid distribution detection device of the present invention non-contacting from the outside of the solid-liquid separation column without directly touching the ice crystals and the fluid to be treated in the solid-liquid separation column of the freeze-concentrator used in the freeze concentration method It is possible to determine the solid-liquid distribution state in the solid-liquid separation column and to detect the ice bed lower end height appropriately and quickly.
- the subject matter of the present invention is not limited to the measurement of the height of the lower end of the ice bed in the solid-liquid separation column of the freeze concentration apparatus.
- the present invention is also effective for the measurement of particle size distribution in a column.
- the solid-liquid distribution detection device includes sound wave emitting means, measuring means, analyzing means, and judging means.
- the sonic radiation means radiates an acoustic wave from the outside of the solid-liquid separation column to the column surface without contact.
- the sonic radiation means comprises one or more sound sources located outside the solid-liquid separation column. The frequency and amplitude of the sound wave emitted from the sound source are appropriately selected according to the material and thickness of the solid-liquid separation column, the composition and density of particles contained in the contents in the column, and the particle size.
- the sound source may be configured to emit a planar sound wave having a predetermined width continuously in the vertical direction of the solid-liquid separation column, or may be configured to emit a plurality of sound waves at a predetermined interval in the vertical direction of the solid-liquid separation column. Good.
- the measuring means measures the resonance waveform of the column surface without contacting the column surface from the outside of the solid-liquid separation column.
- a measuring instrument of a receiving type most suitable for measuring the resonance of the column surface is selected.
- a non-contact type vibration measuring device such as a capacitance type, an eddy current type or a laser Doppler type is used.
- the high sensitivity of this non-contact type vibration measuring device makes it possible to accurately measure the fine resonance state of the column surface.
- a sound wave detection system is effective in solid-liquid distribution detection in a solid-liquid separation column.
- the sound source and the measuring instrument may be provided together in one unit, or may be provided in two parts. Also, a plurality of sound sources and measuring devices may be provided such that they are disposed at predetermined intervals in the vertical direction of the solid-liquid separation column, and one unit may be arranged vertically by the moving means. It may be configured to move along the
- the analysis means analyzes the resonance waveform measured by the measurement means.
- the analysis means analyzes from which position in the vertical direction of the solid-liquid separation column the resonance wave corresponding to the contents in contact in the solid-liquid separation column come from. Also, the vibration noise of the solid-liquid separation column accompanying the operation of the freeze concentration apparatus is excluded from the measured waveform, and only the resonance wave by the sound wave emitting means is separated and extracted.
- the determination means determines the solid-liquid distribution state of the contents in the solid-liquid separation column based on the analysis result of the analysis means.
- the resonance of the column surface changes according to the vibration characteristics of the contents in contact in the solid-liquid separation column.
- the resonance waveform unique to the ice crystal is in contact with the ice crystals
- the resonance waveform unique to the concentrated fluid is in contact with the concentrated fluid.
- the patterns of resonance waveforms specific to the case where the contents in contact inside the column are ice crystals, concentrated fluids, and the boundary between the two are grasped beforehand, and the measured resonance waveforms are analyzed By extracting the features and comparing them with each pattern, it is possible to determine whether the contents at the measurement position in the solid-liquid separation column are in the state of the ice crystals and the concentrated fluid or their boundaries. Therefore, without directly touching the contents in the solid-liquid separation column, the solid-liquid distribution state of the contents at the measurement point can be determined without contact.
- the solid-liquid separation column applied to the present invention may be a transparent body such as an acrylic resin which allows visible light to pass therethrough and allow the inside to be viewed, or may be made of metal from which the inside can not be seen from the outside.
- the solid-liquid distribution detection device of the present invention even if it is an opaque column made of metal such as stainless steel or resin such as vinyl chloride whose inside is not visible from the outside, ice crystals and concentration which are contents in the column It is possible to determine the distribution of internal ice crystals without contacting the outside of the column without directly touching the fluid.
- metal opaque columns such as stainless steel have the merits of being excellent in heat resistance and capable of high-temperature sterilization.
- Metallic opaque columns are easy to microbiologically manage because they can be heat sterilized at high temperatures.
- an opaque column made of metal such as stainless steel is superior in durability as compared to a resin or the like.
- FIG. 1 is a view for explaining the schematic configuration of a solid-liquid distribution detection device according to an embodiment of the present invention.
- the solid-liquid separation column 10 of the freeze-concentrator has a cylindrical shape, and the axis is arranged to extend in the vertical direction.
- the contents of the solid-liquid separation column 10 are divided into an ice crystal layer, a concentrated milk layer, and a boundary layer between them, and are arranged in order from top to bottom.
- the solid-liquid separation column 10 separates the ice crystals and the concentrated milk concentrated by the generation of the ice crystals.
- the solid-liquid separation column 10 is made of an opaque metal whose inside can not be seen from the outside, it is possible to transmit visible light from the outside to the inside and use a part having a visible inside. Good.
- the solid-liquid distribution detection device 20 is an elevating device 23 disposed close to the sound source 21, the measuring device 22, and the solid-liquid separation column 10 and integrally moving the sound source 21 and the measuring device 22 vertically as one unit. And an analysis device 24 for analyzing the resonance waveform measured by the measuring device 22.
- the solid-liquid distribution detection device 20 operates the lifting device at regular intervals, emits sound waves from the sound source 21 to the surface of the column, and measures the resonance waveform of the surface of the column when irradiated by the measuring device 22.
- the analyzer 24 analyzes the resonance waveform measured by the measuring instrument, and compares the pattern of the measured resonance waveform with the pattern of each resonance waveform of the ice crystal layer, the concentrated milk layer, and the boundary layer registered in advance. Then, it is estimated whether the content in the solid-liquid separation column 10 at the unit height position is an ice crystal layer, a concentrated milk layer, or a boundary layer.
- the analysis device 24 corresponds to the analysis means and the determination means of the present invention.
- the solid-liquid distribution state of the contents at the measurement point can be determined in a noncontact manner.
- Solid-liquid separation column 20 solid-liquid distribution detection device 21 sound source (sound wave emitting means) 22 Measuring instrument (measuring means) 23 Lifting device 24 Analysis device
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Abstract
Description
凍結濃縮装置の固液分離カラム内における内容物の固液分布を検出する固液分布検出装置であって、
前記固液分離カラムのカラム表面に向けて音波を放射する音波放射手段と、
前記カラム表面の共振波形を測定する測定手段と、
該測定手段で測定した共振波形を解析する解析手段と、
該解析手段の解析結果に基づいて前記固液分離カラム内における内容物の固液分布状態を判定する判定手段と、
を備えている固液分布検出装置。
[2]
前記判定手段は、前記固液分離カラム内で接する内容物の振動特性に応じて予め設定されている固有の共振波形と、前記解析手段により解析した音波の共振波形とを対比して、前記固液分離カラム内における内容物の固液分布状態を判定することを特徴とする[1]の固液分布検出装置。
[3]
前記判定手段は、前記固有の共振波形として、前記内容物の氷結晶層に固有の共振波形と、前記内容物の濃縮液層に固有の共振波形と、前記氷結晶層と前記濃縮液層の境界層に固有の共振波形を有することを特徴とする[2]の固液分布検出装置。
[4]
前記音波放射手段と前記測定手段を前記固液分離カラムの上下方向に移動させる移動手段を備えていることを特徴とする[1]から[3]のいずれかの固液分布検出装置。
[5]
前記音波放射手段は、前記固液分離カラムの上下方向に所定幅で連続する面状の音波を放射する構成を有することを特徴とする[1]から[3]のいずれかの固液分布検出装置。
[6]
前記音波放射手段は、前記固液分離カラムの上下方向に所定間隔を空けて複数の音波を放射する構成を有することを特徴とする[1]から[3]のいずれかの固液分布検出装置。
[7]
前記音波放射手段は、一つまたは複数の音源を有することを特徴とする[5]または[6]の固液分布検出装置。
図1は、本発明の一実施例に係る固液分布検出装置の概略構成を説明する図である。
20 固液分布検出装置
21 音源(音波放射手段)
22 測定器(測定手段)
23 昇降装置
24 解析装置
Claims (7)
- 凍結濃縮装置の固液分離カラム内における内容物の固液分布を検出する固液分布検出装置であって、
前記固液分離カラムのカラム表面に向けて音波を放射する音波放射手段と、
前記カラム表面の共振波形を測定する測定手段と、
該測定手段で測定した共振波形を解析する解析手段と、
該解析手段の解析結果に基づいて前記固液分離カラム内における内容物の固液分布状態を判定する判定手段と、
を備えている固液分布検出装置。 - 前記判定手段は、前記固液分離カラム内で接する内容物の振動特性に応じて予め設定されている固有の共振波形と、前記解析手段により解析した音波の共振波形とを対比して、前記固液分離カラム内における内容物の固液分布状態を判定することを特徴とする請求項1に記載の固液分布検出装置。
- 前記判定手段は、前記固有の共振波形として、前記内容物の氷結晶層に固有の共振波形と、前記内容物の濃縮液層に固有の共振波形と、前記氷結晶層と前記濃縮液層との境界層に固有の共振波形を有することを特徴とする請求項2に記載の固液分布検出装置。
- 前記音波放射手段と前記測定手段を前記固液分離カラムの上下方向に移動させる移動手段を備えていることを特徴とする請求項1から請求項3のいずれか一項に記載の固液分布検出装置。
- 前記音波放射手段は、前記固液分離カラムの上下方向に所定幅で連続する面状の音波を放射する構成を有することを特徴とする請求項1から請求項3のいずれか一項に記載の固液分布検出装置。
- 前記音波放射手段は、前記固液分離カラムの上下方向に所定間隔を空けて複数の音波を放射する構成を有することを特徴とする請求項1から請求項3のいずれか一項に記載の固液分布検出装置。
- 前記音波放射手段は、一つまたは複数の音源を有することを特徴とする請求項5または6に記載の固液分布検出装置。
Priority Applications (4)
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US16/760,230 US11187678B2 (en) | 2017-11-09 | 2018-11-08 | Solid-liquid distribution detection apparatus |
EP18875641.5A EP3709013B1 (en) | 2017-11-09 | 2018-11-08 | Solid-liquid distribution detection apparatus |
AU2018365755A AU2018365755C1 (en) | 2017-11-09 | 2018-11-08 | Solid-liquid distribution detecting apparatus |
CN201880068477.XA CN111247425A (zh) | 2017-11-09 | 2018-11-08 | 固液分布检测装置 |
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JP2017216703A JP7138427B2 (ja) | 2017-11-09 | 2017-11-09 | 固液分布検出装置 |
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EP (1) | EP3709013B1 (ja) |
JP (1) | JP7138427B2 (ja) |
CN (1) | CN111247425A (ja) |
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Also Published As
Publication number | Publication date |
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EP3709013C0 (en) | 2024-01-10 |
AU2018365755B2 (en) | 2024-02-01 |
AU2018365755A1 (en) | 2020-05-14 |
CN111247425A (zh) | 2020-06-05 |
JP7138427B2 (ja) | 2022-09-16 |
US20210190732A1 (en) | 2021-06-24 |
EP3709013A4 (en) | 2021-08-11 |
EP3709013A1 (en) | 2020-09-16 |
AU2018365755C1 (en) | 2024-06-06 |
US11187678B2 (en) | 2021-11-30 |
EP3709013B1 (en) | 2024-01-10 |
JP2019086470A (ja) | 2019-06-06 |
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