WO2023127274A1 - 精製装置 - Google Patents

精製装置 Download PDF

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Publication number
WO2023127274A1
WO2023127274A1 PCT/JP2022/040296 JP2022040296W WO2023127274A1 WO 2023127274 A1 WO2023127274 A1 WO 2023127274A1 JP 2022040296 W JP2022040296 W JP 2022040296W WO 2023127274 A1 WO2023127274 A1 WO 2023127274A1
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WO
WIPO (PCT)
Prior art keywords
container
liquid
strainer
target substance
sample
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/040296
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English (en)
French (fr)
Japanese (ja)
Inventor
将晶 寺田
匡規 金田
亨久 板橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimadzu Corp filed Critical Shimadzu Corp
Priority to CN202280084752.3A priority Critical patent/CN118434506A/zh
Priority to US18/720,633 priority patent/US12564845B2/en
Priority to EP22915507.2A priority patent/EP4458473A4/en
Priority to JP2023570687A priority patent/JP7831495B2/ja
Publication of WO2023127274A1 publication Critical patent/WO2023127274A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/36—Devices therefor, other than using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4022—Concentrating samples by thermal techniques; Phase changes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4044—Concentrating samples by chemical techniques; Digestion; Chemical decomposition
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0084—Enhancing liquid-particle separation using the flotation principle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0224—Screens, sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
    • B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present disclosure relates to refiners and, more particularly, to strainers disposed within refiners.
  • Non-Patent Document 1 discloses a purifier that recovers microplastics contained in a mixed sample by gravity-separating a mixed sample collected from the sea using a heavy liquid.
  • the decomposition liquid (oxidizing agent) for decomposing contaminants contained in the mixed sample and the mixed sample after the decomposition processing are washed. It is necessary to introduce and drain a cleaning liquid (rinse agent) into and out of the purifier vessel. When these treated waste liquids are discharged, there is concern that the microplastics to be collected may leak out together with the treated liquids.
  • the present disclosure has been made to solve the above problems, and the purpose thereof is to prevent the leakage of the target substance to be recovered when the waste liquid is discharged from the container in the refiner. is.
  • the purification device separates the target substance contained in the mixed sample by the difference in specific gravity.
  • the purification device comprises a container for receiving the mixed sample and a strainer disposed within the container.
  • the container includes an introduction port for introducing a processing liquid for processing the mixed sample into the container, and an outlet port for discharging the processing liquid from the container.
  • the strainer is configured to capture and retain within the container the material of interest in the process liquid discharged from the discharge port.
  • the strainer since the strainer is arranged in the container, the target substance is held in the container when the waste liquid is discharged from the container through the discharge port, and the target substance does not leak out of the container. Suppressed.
  • FIG. 4 is a flow chart of a refining process performed by a refining device; It is an external view of a container and a strainer used in a refiner. It is a side sectional view of a strainer.
  • FIG. 1 is a diagram schematically showing a refiner 1 according to an embodiment.
  • the purifier 1 includes a purifier 100 for purifying a mixed sample and a control device 500 for controlling the purifier 100 .
  • the refiner 1 according to the embodiment refines the mixed sample by controlling the refiner 100 with the control device 500, and recovers the component (target substance) contained in the mixed sample that is the target of recovery.
  • "Purification” includes removing a substance of interest from a mixture using a processing liquid.
  • a "decomposition liquid”, a "heavy liquid” and a “rinse liquid (cleaning liquid)" are used as the "treatment liquid".
  • the “mixed sample” purified by the purification device 1 may be in any form as long as it contains the target substance.
  • “mixed samples” include seawater and sand collected from the sea or coast, processed products such as foods and cosmetics, and the like.
  • a “mixed sample” is exemplified by seawater and sand collected from the sea or coast.
  • the “mixed sample” is also simply referred to as the “sample”.
  • the "target substance" to be recovered by the refining device 1 may be any component as long as it is recovered by the refining device 1.
  • the "target substance” includes microplastics, which are fine plastic particles having a size of 5 mm or less.
  • microplastics contained in seawater and sand collected from the sea or from the coast are exemplified as the “target substance”.
  • the purifier 100 includes a container 50 containing a sample, pipes 11 to 22, pumps 31 to 33, solenoid valves 41 to 43, ports 61 to 64, a stirrer 71, a stirrer 72, and an overflow section 80. , a decomposing liquid reservoir 110 , a heavy liquid reservoir 120 , a rinse liquid reservoir 130 , waste liquid reservoirs 140 and 150 , a detection filter 210 and a supernatant liquid reservoir 215 .
  • the pipe 11 connects the decomposition liquid reservoir 110 and the solenoid valve 41 .
  • a pipe 12 connects the electromagnetic valve 41 and the pump 31 .
  • a pipe 13 connects the pump 31 and a port 61 provided on the outer peripheral portion of the container 50 .
  • the decomposition liquid reservoir 110 and the port 61 of the container 50 are connected by the pipes 11 , 12 , 13 via the solenoid valve 41 and the pump 31 .
  • the pipe 14 connects the heavy liquid reservoir 120 and the solenoid valve 42 .
  • a pipe 15 connects the electromagnetic valve 42 and the pump 32 .
  • a pipe 16 connects the pump 32 and a port 62 provided on the outer peripheral portion of the container 50 .
  • the heavy liquid reservoir 120 and the port 62 of the container 50 are connected by the pipes 14 , 15 , 16 via the solenoid valve 42 and the pump 32 .
  • the pipe 17 connects the rinse liquid reservoir 130 and the solenoid valve 41 . That is, the electromagnetic valve 41 is connected to the decomposition liquid reservoir 110 through the pipe 11 and is also connected to the rinse liquid reservoir 130 through the pipe 14 . Thus, the rinse liquid reservoir 130 and the port 61 of the container 50 are connected by the pipes 17 , 12 , 13 via the solenoid valve 41 and the pump 31 .
  • the pipe 18 connects the rinse liquid reservoir 130 and the solenoid valve 42 . That is, the solenoid valve 42 is connected to the heavy liquid reservoir 120 by the pipe 14 and is also connected to the rinse liquid reservoir 130 by the pipe 18 . Thus, the rinse liquid reservoir 130 and the port 62 of the container 50 are connected by the pipes 18 , 15 , 16 via the solenoid valve 42 and the pump 32 .
  • a pipe 19 connects the waste liquid reservoir 140 and the solenoid valve 43 .
  • a pipe 20 connects the electromagnetic valve 43 and the pump 33 .
  • a pipe 21 connects the pump 33 and a port 63 provided on the outer peripheral portion of the container 50 .
  • the waste liquid reservoir 140 and the port 63 of the container 50 are connected by the pipes 19 , 20 , 21 via the solenoid valve 43 and the pump 33 .
  • the pipe 22 connects the pump 33 and a port 64 provided on the outer peripheral portion of the container 50 . That is, pump 33 is connected to port 63 of container 50 by pipe 21 and is also connected to port 64 of container 50 by pipe 22 . Thus, the waste liquid reservoir 140 and the port 64 of the container 50 are connected by the pipes 19 , 20 , 22 via the solenoid valve 43 and the pump 33 .
  • a pipe 23 connects the waste liquid reservoir 150 and the solenoid valve 43 . That is, the solenoid valve 43 is connected to the waste liquid reservoir 140 by the pipe 19 and is also connected to the waste liquid reservoir 150 by the pipe 23 .
  • the waste liquid reservoir 150 and the port 63 of the container 50 are connected by the pipes 23 , 20 , 21 via the solenoid valve 43 and the pump 33 .
  • the waste liquid reservoir 150 and the port 64 of the container 50 are connected by pipes 23 , 20 , 22 via an electromagnetic valve 43 and a pump 33 .
  • the decomposition liquid reservoir 110 stores a decomposition liquid for treating contaminants.
  • Contaminants are foreign substances other than the target substance in the mixed sample.
  • the "contaminants” are exemplified by organic contaminants having organic properties.
  • the “decomposition liquid” may be any other solution as long as it decomposes contaminants.
  • the "decomposition liquid” decomposes organic contaminants.
  • the “decomposition liquid” is an oxidizing agent such as hydrogen peroxide (H 2 O 2 ), a mixture of hydrogen peroxide (H 2 O 2 ) and iron (II) oxide (FeO).
  • the "mixed sample” is seawater and sand
  • the "organic contaminants” are, for example, wood chips and plankton mixed in the seawater or sand.
  • the heavy liquid reservoir 120 stores heavy liquid for separating the sample due to the difference in specific gravity.
  • the “heavy liquid” may be any other solution as long as it separates the sample due to the difference in specific gravity.
  • the “heavy liquid” sediments inorganic contaminants having inorganic properties by differential gravity.
  • “heavy liquids” are sodium chloride (NaCl), sodium iodide (NaI), zinc chloride ( ZnCl2 ), and the like. If the "mixed sample” is seawater and sand, the “inorganic contaminants” are sand, glass, stone, and the like.
  • the specific gravity of the “heavy liquid” is set higher than the specific gravity of the “target substance” to be recovered by the refiner 1 and lower than the specific gravity of the “inorganic contaminants”.
  • the specific gravity of the “heavy liquid” is higher than the specific gravity of the microplastics. It is set large and smaller than the specific gravity of sand, glass, stone, and the like. Specifically, the specific gravity of the “heavy liquid” is set to about 1.5 to about 1.7.
  • the rinse liquid reservoir 130 stores a rinse liquid, which is a cleaning liquid for cleaning the inside of the container 50 .
  • the “rinse liquid” may be any other solution for cleaning the inside of the container 50 .
  • one example of a “rinse liquid” is water.
  • the “rinse liquid” has a role of cleaning the inside of the container 50 and a role of diluting the decomposition liquid introduced into the container 50 .
  • the waste liquid reservoirs 140 and 150 store waste liquid such as the heavy liquid discharged from the container 50, the decomposition liquid, the rinse liquid, and the seawater contained in the mixed sample.
  • the “decomposition liquid reservoir 110,” the “heavy liquid reservoir 120,” and the “rinse liquid reservoir 130” in the present embodiment are the same as the “first reservoir,” the “second reservoir,” and the “third reservoir” in the present disclosure. correspond to each other.
  • the pump 31 is controlled by the control device 500 to introduce the decomposition liquid in the decomposition liquid reservoir 110 or the rinse liquid in the rinse liquid reservoir 130 into the container 50 via the port 61 .
  • the pump 32 is controlled by the control device 500 to introduce the heavy liquid in the heavy liquid reservoir 120 or the rinse liquid in the rinse liquid reservoir 130 into the container 50 via the port 62 .
  • the pumps 31, 32 are hereinafter also referred to as "introduction pumps 31, 32".
  • the pump 33 is controlled by the control device 500 and discharges the waste liquid in the container 50 to the waste liquid reservoir 140 or the waste liquid reservoir 150 via the port 63 or port 64 .
  • the pump 33 is hereinafter also referred to as "exhaust pump 33".
  • the solenoid valve 41 is controlled by the control device 500 and switches the path connected to the port 61 of the container 50 between the decomposing liquid reservoir 110 and the rinsing liquid reservoir 130 .
  • the solenoid valve 42 is controlled by the control device 500 and switches the path connected to the port 62 of the container 50 between the heavy liquid reservoir 120 and the rinse liquid reservoir 130 .
  • the solenoid valve 43 is controlled by the control device 500 and switches the path connected to the ports 63 and 64 of the container 50 between the waste liquid reservoir 140 and the waste liquid reservoir 150 .
  • waste liquid containing heavy liquid is discharged to waste liquid reservoir 140 and waste liquid containing decomposing liquid is discharged to waste liquid reservoir 150 .
  • the port 61 introduces the decomposition liquid from the decomposition liquid reservoir 110 sent by the pump 31 or the rinse liquid from the rinse liquid reservoir 130 into the container 50 .
  • the port 62 introduces the heavy liquid from the heavy liquid reservoir 120 or the rinse liquid from the rinse liquid reservoir 130 delivered by the pump 32 into the container 50 .
  • the waste liquid in the container 50 is discharged to the waste liquid reservoir 140 or the waste liquid reservoir 150 through the ports 63,64.
  • the ports 61, 62 are also called “introduction ports 61, 62”
  • the ports 63, 64 are also called “exhaust ports 63, 64”.
  • a strainer 300 is provided inside the container 50 to prevent the target substance contained in the sample from being discharged from the container 50 .
  • the strainer 300 has meshes of a size capable of trapping microplastics, which are target substances.
  • the strainer 300 is a wire mesh made of SUS (Steel Use Stainless). Strainer 300 is described in detail in FIGS.
  • the stirrer 71 is, for example, a constant temperature stirrer and is arranged below the container 50 .
  • the stirrer 71 is controlled by the control device 500 and stirs the sample in the container 50 by rotating a stirrer 72 provided in the container 50 . Furthermore, the stirrer 71 keeps the temperature of the sample in the container 50 constant by applying heat to the container 50 from below.
  • the overflow part 80 is connected to the discharge port 59 provided at the top of the container 50, and overflows and discharges the supernatant liquid of the sample containing the target substance from the container 50 to the outside.
  • the detection filter 210 collects the target substance contained in the supernatant liquid by filtering the supernatant liquid of the sample overflowing from the overflow section 80 .
  • the supernatant that has passed through detection filter 210 is collected by supernatant reservoir 215 .
  • the detection filter 210 has meshes large enough to trap microplastics, which are components of interest.
  • the detection filter 210 is a wire mesh made of SUS or a membrane filter made of PTFE (polytetrafluoroethylene) (Teflon (registered trademark)).
  • PTFE polytetrafluoroethylene
  • the size of the mesh of the detection filter 210 must be 0.1 to 5.0 mm, and preferably about 0.1 mm, so that particles do not pass through.
  • the control device 500 may be realized by a general-purpose computer, or may be realized by a dedicated computer for controlling the refiner 100. Controller 500 controls pumps 31 - 33 , solenoid valves 41 - 43 and stirrer 71 in purifier 100 .
  • the control device 500 corresponds to an example of a "computer" in the present disclosure.
  • FIG. 2 is a diagram for explaining the hardware configuration of the refining device 1 according to the embodiment.
  • the control device 500 includes, as main hardware elements, an arithmetic device 501, a memory 502, a communication device 503, a display device 504, an input device 505, a data reader 506, and a storage device. 510.
  • Arithmetic device 501 is a computer that reads programs (eg, control program 511 and OS (Operating System) 513) stored in storage 510, expands the read programs in memory 502, and executes them.
  • the arithmetic unit 501 executes the control program 511 to perform a refining process (described later with reference to FIG. 3) for controlling the refining device 100 .
  • the arithmetic unit 501 is configured by, for example, a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), a GPU (Graphics Processing Unit), or an MPU (Multi Processing Unit). Note that the arithmetic unit 501 may be configured by an arithmetic circuit (processing circuit).
  • the memory 502 provides a storage area for temporarily storing program codes, work memory, etc. when the arithmetic unit 501 executes an arbitrary program.
  • the memory 502 is composed of volatile memory such as DRAM (Dynamic Random Access Memory) or SRAM (Static Random Access Memory), or non-volatile memory such as ROM (Read Only Memory) or flash memory.
  • the communication device 503 transmits and receives data to and from other devices via a network (not shown).
  • the communication device 503 supports arbitrary communication methods such as Ethernet (registered trademark), wireless LAN (Local Area Network), and Bluetooth (registered trademark).
  • the display device 504 is composed of, for example, an LCD (Liquid Crystal Display) or the like, and displays a program design screen, an alert screen in the event of an abnormality, and the like.
  • LCD Liquid Crystal Display
  • the input device 505 is composed of, for example, a keyboard or a mouse, and is used by the user to input design information when designing a program.
  • Input device 505 may include a start switch for starting execution of the refinement process by computing device 501 .
  • the data reading device 506 reads data stored in the recording medium 507 .
  • the recording medium 507 may have other configurations as long as it can record various data, such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a USB (Universal Serial Bus) memory.
  • CD Compact Disc
  • DVD Digital Versatile Disc
  • USB Universal Serial Bus
  • the storage 510 provides a storage area for storing various data necessary for refining processing.
  • the storage 510 is composed of a non-volatile memory device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive).
  • the storage 510 stores a control program 511 , control data 512 and an OS 513 .
  • the control program 511 is a program in which the details of the refining process are described, and is executed by the computing device 501.
  • the control program 511 may be designed by the user using the input device 505, read from the recording medium 507 by the data reader 506, or read from another device such as a server by the communication device 503 via the network. may be obtained by
  • control data 512 is data used when the arithmetic device 501 executes the control program 511 .
  • control data 512 includes data such as set values for controlling pumps 31-33, solenoid valves 41-43, and stirrer 71.
  • FIG. The control data 512 may be input by the user using the input device 505, read from the recording medium 507 by the data reader 506, or read from another device such as a server via the network by the communication device 503. may be obtained via
  • the OS 513 provides basic functions for executing various types of processing by the computing device 501 .
  • FIG. 3 is a flow chart of the refining process executed in the refining device 1 according to this embodiment. Each step shown in FIG. 3 is implemented by the arithmetic device 501 of the control device 500 executing the OS 513 and the control program 511 .
  • the user introduces the sample into the container 50 of the refiner 1. 4, the container 50 is separable into two parts (first part 51, second part 55), and the user can remove the container 50 by removing the first part 51 from the second part 55.
  • the container 50 is opened and the sample is introduced into the container 50 .
  • the user then initiates control of the purifier 100 by the control device 500 by performing a start operation using the input device 505 of the control device 500 .
  • control device 500 controls the pump 33 and the electromagnetic valve 43 in step S1, thereby supplying the container via the pipes 20 to 23 and the ports 63 and 64.
  • the liquid component of the sample introduced into 50 is drained to waste reservoir 150 .
  • microplastics which are substances to be collected and contained in the sample, are captured by a strainer 300 provided inside the container 50 and held in the container 50 .
  • step S2 the control device 500 stops the pump 33 on the discharge side and controls the pump 31 and the electromagnetic valve 41 so that the inside of the decomposition liquid reservoir 110 is discharged through the pipes 11 to 13 and the port 61. is introduced into the container 50 .
  • step S3 the control device 500 controls the stirrer 71 to rotate the stirrer 72 provided inside the container 50 while applying constant heat to the container 50 to stir the sample.
  • the temperature of the container 50, the rotation speed of the stirrer 72, and the rotation time are preset by the user.
  • an oxidation treatment is performed with an oxidizing agent, and organic contaminants contained in the sample are decomposed. It should be noted that while the sample is not necessarily heated during stirring, the decomposition by the oxidation treatment is accelerated by maintaining the temperature of the sample at a constant temperature by heating.
  • step S4 the control device 500 controls the pump 33 and the solenoid valve 43, so that the organic contaminants contained in the sample after the decomposition treatment via the pipes 20 to 23 and the ports 63 and 64
  • the waste liquid in container 50 is discharged to waste liquid reservoir 150 .
  • Microplastics, which are the target substance contained in the sample, are captured by the strainer 300 provided inside the container 50 and held in the container 50 .
  • step S5 the control device 500 stops the pump 33 on the discharge side and controls the pump 31 and the solenoid valve 41 to supply the rinse liquid reservoir via the pipes 17, 12, 13 and the port 61.
  • the rinse liquid in 130 is introduced into the container 50 to wash the inside of the container 50 .
  • the control device 500 introduces an amount of rinse liquid preset by the user into the container 50 by controlling the suction amount of the pump 31 .
  • step S6 the control device 500 controls the pump 33 and the solenoid valve 43 to transfer the waste liquid after washing with the rinse liquid to the waste liquid reservoir 150 through the pipes 20 to 23 and the ports 63 and 64. Discharge. As a result, the inside of the container 50 is washed with the rinse liquid. Microplastics contained in the sample and to be collected are captured by a strainer 300 provided inside the container 50 and held in the container 50 . After that, the control device 500 may dry the sample by leaving the sample as it is for a predetermined period (for example, one day).
  • step S7 the control device 500 introduces the heavy liquid in the heavy liquid reservoir 120 into the container 50 via the pipes 14-16 and the port 62 by controlling the pump 32 and the electromagnetic valve 42. At this time, the control device 500 introduces an amount of heavy liquid preset by the user into the container 50 by controlling the suction amount of the pump 32 .
  • step S8 the control device 500 leaves the sample as it is for a predetermined period (for example, one day).
  • a predetermined period for example, one day.
  • step S9 the control device 500 again controls the pump 32 and the solenoid valve 42 to reintroduce the heavy liquid in the heavy liquid reservoir 120 into the container 50 via the pipes 14 to 16 and the port 62. do.
  • the control device 500 introduces an amount of heavy liquid preset by the user into the container 50 by controlling the suction amount of the pump 32 .
  • the heavy liquid is reintroduced into the sample in the container 50 in this way, the liquid level of the sample separated by specific gravity gradually rises in the container 50, and eventually the supernatant liquid of the sample flows into the discharge port 59 of the container 50. reach. Then, the supernatant liquid of the sample is discharged outside through the discharge port 59 and the overflow portion 80 .
  • the supernatant liquid of the sample discharged through the overflow section 80 is filtered by the detection filter 210 and only the waste liquid is recovered by the supernatant liquid reservoir 215 .
  • microplastics which are components with a lighter specific gravity than the heavy liquid, remain.
  • the control device 500 cleans the container 50 as post-processing. Specifically, in step S10, the control device 500 controls the pump 33 and the electromagnetic valve 43, so that the container 50 after the microplastics have been collected via the pipes 19 to 22 and the ports 63 and 64. The waste liquid inside is discharged to the waste liquid reservoir 140 .
  • step S11 the control device 500 stops the pump 33 on the discharge side and controls the pump 32 and the solenoid valve 42 to supply the rinse liquid reservoir via the pipes 18, 15, 16 and the port 62.
  • the rinse liquid in 130 is introduced into the container 50 to wash the inside of the container 50 .
  • the controller 500 introduces an amount of rinse liquid preset by the user into the container 50 by controlling the suction amount of the pump 32 .
  • step S12 the control device 500 controls the pump 33 and the electromagnetic valve 43 to control the inside of the container 50 after the rinse liquid has been introduced via the pipes 19 to 22 and the ports 63 and 64.
  • the waste liquid is discharged to the waste liquid reservoir 140 .
  • the inside of the container 50 is washed with the rinse liquid.
  • the control device 500 automatically controls the decomposition liquid and the The heavy liquid is introduced and the waste liquid is discharged from the container 50 . Therefore, the user does not need to introduce the decomposing liquid and the heavy liquid into the container 50 and discharge the waste liquid from the container 50 by himself/herself. Furthermore, according to the purification device 1 according to the present embodiment, the control device 500 automatically cleans the used container 50 after collecting the microplastics. As a result, the microplastics can be stably collected without depending on the skill of the user, and the sample can be purified with high accuracy.
  • FIG. 4 is an external view when the strainer 300 is arranged in the container 50 used in the refiner 1.
  • FIG. 5 is a side sectional view of the strainer 300.
  • the container 50 has an upper first portion 51 to which the overflow portion 80 is connected, introduction ports 61 and 62, and discharge ports 63 and 64. and a second portion 55 on the lower side provided.
  • Each of the first portion 51 and the second portion 55 is made of glass.
  • Flange portions 52 and 56 are provided at the lower end portion of the first portion 51 and the upper end portion of the second portion 55, respectively.
  • the strainer 300 has a generally cage-like shape, and a flange portion 310 is provided at the upper end of a net-like mesh portion 320 having a substantially cylindrical shape.
  • the mesh portion 320 of the strainer 300 is positioned inside the second portion 55 of the container 50 .
  • the flange portion 310 is sandwiched between the flange portion 52 of the first portion 51 and the flange portion 56 of the second portion 55 .
  • the container 50 and the strainer 300 are fixed in a watertight state by clamping the flange portions of the container 50 and the strainer 300 with a fixing device 90 indicated by broken lines in FIG. That is, it is possible to prevent the sample from leaking from the contact portion between the container and the strainer.
  • the strainer 300 is made of stainless steel (SUS), and the mesh part 320 is formed with a plurality of openings of sizes capable of trapping microplastics, which are the target substance.
  • the mesh size of the mesh part 320 is 80 mesh or more. In other words, the mesh size of the mesh portion 320 is 200 ⁇ m or less.
  • a space is provided that allows the stirrer 72 to be arranged.
  • the stirrer 72 can be smoothly rotated during sample decomposition processing.
  • the sample accommodation space in the second portion 55 can be widened.
  • the reaction in the decomposition treatment can be accelerated, and the separation distance between the recovery target substance and the contaminants can be ensured during gravity separation.
  • the first surface 311 that contacts the flange portion 52 of the first portion 51 of the container 50 and the second surface 312 that contacts the flange portion 56 of the second portion 55 have surface roughness Sandblasting is applied so that the By applying such a surface treatment to the bearing surface of the flange portion 310, the wettability of the bearing surface can be enhanced, so that the adhesion of microplastics, which are the target substance, to the bearing surface can be suppressed.
  • a corner portion 315 on the inner surface side of the flange portion 310 is chamfered. By chamfering, the corners of the inner surface with which the sample comes into contact become obtuse angles, so that adhesion of microplastics to the inner surface can be suppressed.
  • a refiner separates a target substance contained in a mixed sample by a difference in specific gravity.
  • the purification device comprises a container for receiving the mixed sample and a strainer disposed within the container.
  • the container includes an introduction port for introducing a processing liquid for processing the mixed sample into the container, and an outlet port for discharging the processing liquid from the container.
  • the strainer is configured to capture and retain within the container the material of interest in the process liquid discharged from the discharge port.
  • the strainer since the strainer is arranged in the container, when the waste liquid is discharged from the container from the discharge port, the target substance is held in the container and discharged to the outside of the container. Leakage of substances can be suppressed.
  • the treatment liquid contains a heavy liquid for separating the target substance.
  • the container further includes a first portion and a second portion separable from each other, and an overflow portion for discharging the supernatant liquid produced by the introduction of the heavy liquid to the outside of the container together with the target substance.
  • An overflow portion is provided in the first portion.
  • An inlet port and an outlet port are provided in the second portion.
  • a strainer is positioned within the second portion.
  • the strainer is arranged in the second portion of the container where the introduction port and the discharge port are provided. Therefore, the space for accommodating the sample in the second portion of the container can be widened, and the separation distance between the substance to be recovered and the contaminants can be ensured during the gravity separation.
  • the strainer in the refiner described in Section 2, includes a flange sandwiched between the first portion and the second portion. The strainer is secured to the vessel at the flange.
  • the strainer since the strainer is clamped and fixed between the first portion and the second portion of the container at the flange portion, the relative position with respect to the container body can be stabilized. can be done. As a result, a space in which the stirrer can rotate can be secured, and the reaction in the decomposition treatment can be promoted. In addition, it is possible to secure a separation distance between the substance to be recovered and the contaminants during gravity separation.
  • the strainer further includes a mesh portion connected to the flange portion and capable of capturing the target substance.
  • the inner corners of the flange portion connected to the mesh portion are chamfered.
  • the mesh size of the mesh part is 80 mesh or more.
  • the strainer can reliably capture microplastics, which are the target substance, when the waste liquid is discharged from the container.
  • the opening of the mesh portion is 200 ⁇ m or less.
  • the strainer can reliably capture microplastics, which are the target substance, when the waste liquid is discharged from the container.
  • the treatment liquid comprises a decomposition liquid for decomposing contaminants contained in the mixed sample and a decomposing liquid for washing the mixed sample. washing solution.
  • the refiner further includes a first reservoir that stores the decomposition liquid, a second reservoir that stores the heavy liquid, and a third reservoir that stores the cleaning liquid.
  • a reservoir is provided for individually storing the treatment liquid. Thereby, each processing liquid can be stably supplied into the container.
  • the target substance is microplastic.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Extraction Or Liquid Replacement (AREA)
PCT/JP2022/040296 2021-12-28 2022-10-28 精製装置 Ceased WO2023127274A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202280084752.3A CN118434506A (zh) 2021-12-28 2022-10-28 纯化装置
US18/720,633 US12564845B2 (en) 2021-12-28 2022-10-28 Purification apparatus
EP22915507.2A EP4458473A4 (en) 2021-12-28 2022-10-28 PURIFIER
JP2023570687A JP7831495B2 (ja) 2021-12-28 2022-10-28 精製装置

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JP2021214078 2021-12-28
JP2021-214078 2021-12-28

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EP (1) EP4458473A4 (https=)
JP (1) JP7831495B2 (https=)
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WO (1) WO2023127274A1 (https=)

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JPWO2023127274A1 (https=) 2023-07-06
EP4458473A4 (en) 2025-11-12
US20250050351A1 (en) 2025-02-13
CN118434506A (zh) 2024-08-02
JP7831495B2 (ja) 2026-03-17
US12564845B2 (en) 2026-03-03
EP4458473A1 (en) 2024-11-06

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