WO2023127506A1 - 脱気モジュール及び液体の脱気方法 - Google Patents

脱気モジュール及び液体の脱気方法 Download PDF

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Publication number
WO2023127506A1
WO2023127506A1 PCT/JP2022/046122 JP2022046122W WO2023127506A1 WO 2023127506 A1 WO2023127506 A1 WO 2023127506A1 JP 2022046122 W JP2022046122 W JP 2022046122W WO 2023127506 A1 WO2023127506 A1 WO 2023127506A1
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WO
WIPO (PCT)
Prior art keywords
pipe
hollow fiber
liquid
baffle
extending direction
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/JP2022/046122
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
航 山本
彰規 森野
将哉 角木
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.)
DIC Corp
Original Assignee
DIC Corp
Dainippon Ink and Chemicals Co Ltd
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 DIC Corp, Dainippon Ink and Chemicals Co Ltd filed Critical DIC Corp
Priority to KR1020247011336A priority Critical patent/KR20240051286A/ko
Priority to JP2023570826A priority patent/JP7662059B2/ja
Priority to CN202280082142.XA priority patent/CN118382494A/zh
Priority to EP22915730.0A priority patent/EP4458455A4/en
Priority to US18/719,866 priority patent/US20250041764A1/en
Publication of WO2023127506A1 publication Critical patent/WO2023127506A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0031—Degasification of liquids by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/021—Manufacturing thereof
    • B01D63/0232—Manufacturing thereof using hollow fibers mats as precursor, e.g. wound or pleated mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2653—Degassing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/10—Specific supply elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/12—Specific discharge elements

Definitions

  • the present invention relates to a degassing module for degassing a liquid and a liquid degassing method.
  • a deaeration module that deaerates a liquid using multiple hollow fiber membranes has been known for some time.
  • a degassing module for example, there is a contactor described in Patent Document 1.
  • the contactor described in Patent Document 1 includes a perforated pipe, a plurality of hollow fiber membranes surrounding the pipe, a baffle for changing the direction of the liquid flow, and a plurality of hollow fiber membrane ends fixed to the pipe.
  • a tube sheet that holds a plurality of hollow fiber membranes; a shell that accommodates a plurality of hollow fiber membranes; and an air inlet formed in the shell.
  • the liquid exits the pipe upstream of the baffle, passes through the intermembrane space between the plurality of hollow fiber membranes, passes between the baffle and the shell, It then passes through the intermembrane space between the hollow fiber membranes and re-enters the pipe downstream of the baffle.
  • the lumen of the hollow fiber membrane is vacuum-sucked from the intake port, so that gas accompanying the liquid moves to the lumen side of the hollow fiber membrane, and the liquid is degassed. The degassed liquid is then discharged through the pipe.
  • the deaeration performance of the deaeration module can be improved.
  • the effect is great in a large-sized degassing module.
  • an object of the present invention is to provide a degassing module and a liquid degassing method that can reduce the pressure loss of the liquid.
  • the degassing module of the present invention comprises a pipe having a plurality of holes for opening the pipe interior channel and having a liquid supply port and a liquid outlet port, and a plurality of hollow fiber membranes.
  • a hollow fiber membrane group arranged on the outer peripheral side of the pipe so as to cover the hole, a housing connected to the outer peripheral surface of the pipe and containing the hollow fiber membrane group, and a region in the housing composed of a plurality of hollow fiber membranes.
  • the liquid can be degassed by sucking the internal area through the intake port and supplying the liquid to the pipe channel through the liquid supply port.
  • the pipe internal flow path and the inter-membrane space are partitioned in the extending direction by baffles. Therefore, when liquid is supplied from the liquid supply port to the pipe channel, the liquid exits the pipe on the liquid supply port side of the baffle, passes through the inter-membrane space, passes through the baffle clearance between the baffle and the housing, It passes through the intermembrane space and re-enters the pipe on the liquid outlet side of the baffle.
  • the plurality of hollow fiber membranes are pressed toward the pipe side by the liquid flow that crosses the baffle and enters the pipe again.
  • a support section is arranged to support at least part of the plurality of hollow fiber membranes with respect to the pipe. Therefore, due to the flow of liquid that crosses over the baffle and re-enters the pipe, the hollow fiber membranes on the outer peripheral side slip between the hollow fiber membranes on the inner peripheral side, and the inter-membrane space that serves as a flow path for the liquid narrows. is suppressed. As a result, the pressure loss of the liquid can be reduced as compared with the case where the support section is not arranged.
  • the support part may support all of the plurality of hollow fiber membranes with respect to the pipe.
  • the supporting part supports all of the plurality of hollow fiber membranes against the pipe, so the flow of liquid that crosses the baffle and re-enters the pipe narrows the inter-membrane space that serves as the liquid flow path. can be further suppressed.
  • the support part may be separated from the housing.
  • the support is spaced from the housing so that liquid that has passed over the baffle can flow along the inner peripheral surface of the housing until it passes over the support.
  • it is possible to widen the region where the plurality of hollow fiber membranes and the liquid come into contact with each other on the liquid outlet side of the support section, which is the downstream side of the support section.
  • the baffle may be separated from the housing. In this degassing module, since the baffle is spaced from the housing, it is possible to reduce the pressure loss of the liquid when the liquid passes through the baffle clearance between the baffle and the housing.
  • the baffle may partition the entire inter-membrane space in the extending direction.
  • the baffle partitions the entire intermembrane space in the extending direction, so that the liquid coming out of the pipe flows to the outside of the hollow fiber membrane group on the liquid supply port side of the baffle, which is the upstream side of the baffle. can be done.
  • the contact time between the plurality of hollow fiber membranes and the liquid can be lengthened, so that the degassing efficiency of the liquid can be improved.
  • a liquid circulation space through which liquid can flow may be formed between the hollow fiber membrane group and the housing.
  • the liquid circulation space since the liquid circulation space is formed between the hollow fiber membrane group and the housing, the liquid coming out of the pipe enters the liquid circulation space through the inter-membrane space, and then enters the liquid circulation space. can enter the pipe through the intermembrane space from Therefore, the pressure loss of the liquid L can be reduced while the liquid is brought into contact with the plurality of hollow fiber membranes.
  • the support part does not have to be arranged in the liquid circulation space.
  • this degassing module since the support is not arranged in the liquid circulation space, the pressure loss of the liquid passing through the liquid circulation space can be reduced compared to the case where the support is arranged in the liquid circulation space. .
  • the baffles include an inner baffle that is arranged on the inner peripheral side of the pipe and partitions the pipe internal flow path in the extending direction, and an outer baffle that is arranged on the outer peripheral side of the pipe and partitions the inter-membrane space in the extending direction.
  • the baffle since the baffle has an inner baffle arranged on the inner peripheral side of the pipe and an outer baffle arranged on the outer peripheral side of the pipe, the baffle can be arranged without dividing the pipe in the extending direction. can be done.
  • the partition part is arranged at a first end on one side of the group of hollow fiber membranes in the extending direction, and a second end on the other side of the group of hollow fiber membranes in the extending direction. and a second sealing portion, wherein each of the first sealing portion and the second sealing portion has a plurality of hollow fiber membranes between the pipe and the housing in an orthogonal cross section orthogonal to the extending direction and the plurality of holes of the pipe may be formed between the first sealing portion and the second sealing portion in the extending direction.
  • each of the first sealing part and the second sealing part is filled in the entire area except for the plurality of hollow fiber membranes between the pipe and the housing in the orthogonal cross section orthogonal to the extending direction.
  • a plurality of holes in the pipe are formed between the first sealing part and the second sealing part. Therefore, the area inside the housing can be partitioned into an internal area and an external area by the first sealing portion and the second sealing portion. Further, since the first sealing portion and the second sealing portion are arranged at the first end portion on one side and the second end portion on the other side of the hollow fiber membrane group in the extending direction, Over a long range, the liquid can contact multiple hollow fiber membranes.
  • the air inlet is composed of a first air inlet formed on the side opposite to the second sealing portion of the first sealing portion in the extending direction, and a first sealing portion of the second sealing portion in the extending direction. and a second inlet formed on the opposite side.
  • this degassing module since the first inlet and the second inlet are formed outside the first sealing part and the second sealing part in the extending direction, the plurality of hollow fiber membranes from both ends of the plurality of hollow fiber membranes Each inner peripheral space of the hollow fiber membrane can be sucked. As a result, it is possible to improve the degassing efficiency of the liquid.
  • a method for degassing a liquid according to the present invention in any one of the degassing modules described above, sucks the internal region from the intake port and supplies the liquid from the liquid supply port to the pipe channel.
  • any one of the degassing modules described above is used to degas the liquid, so the pressure loss of the liquid can be reduced.
  • the pressure loss of liquid can be reduced.
  • FIG. 1 is a schematic cross-sectional view of a degassing module according to an embodiment
  • FIG. FIG. 2 is a schematic cross-sectional view taken along line II-II shown in FIG. 1;
  • FIG. 2 is a schematic cross-sectional view enlarging a part of the degassing module shown in FIG. 1;
  • FIG. 2 is a schematic cross-sectional view enlarging a part of the degassing module shown in FIG. 1;
  • FIG. 2 is a schematic cross-sectional view enlarging a part of the degassing module shown in FIG. 1;
  • FIG. 2 is a schematic cross-sectional view enlarging a part of the degassing module shown in FIG.
  • FIG. 1 It is a schematic sectional drawing explaining an example of the formation method of a baffle and a support part. It is a schematic sectional drawing explaining an example of the formation method of a baffle and a support part.
  • 4 is a graph showing pressure loss measurement results in Comparative Example 1.
  • FIG. 4 is a graph showing pressure loss measurement results of Example 1 and Comparative Example 1.
  • FIG. 4 is a graph showing pressure loss measurement results of Example 1 and Comparative Example 1.
  • FIG. 1 is a schematic cross-sectional view of the degassing module according to the embodiment.
  • FIG. 2 is a schematic cross-sectional view along line II-II shown in FIG. 3 to 6 are schematic sectional views enlarging a part of the degassing module shown in FIG.
  • the degassing module 1 according to the embodiment is a module for degassing the liquid L.
  • the liquid L to be degassed by the degassing module 1 is not particularly limited. Examples include organic solvents such as alcohols and hydrocarbons, and ionic liquids.
  • the degassing module 1 includes a pipe 2, a hollow fiber membrane group 3, a housing 4, a partition section 5, a baffle 6, and a support section 7.
  • the pipe 2 is a cylindrical member extending linearly along the central axis A.
  • the direction in which the pipe 2 extends cylindrically, that is, the direction of the central axis A is called an extension direction D.
  • the pipe 2 forms an intra-pipe flow path 23 having a liquid supply port 21 and a liquid discharge port 22 .
  • the pipe internal flow path 23 is a flow path formed by the inner peripheral surface of the pipe 2 and through which the liquid L can flow.
  • a plurality of holes 24 are formed in the pipe 2 to open the pipe internal flow path 23 .
  • the plurality of holes 24 are holes for discharging the liquid L from the in-pipe channel 23 to the outside of the pipe 2 and for letting the liquid L into the in-pipe channel 23 from the outside of the pipe 2 .
  • the pipe 2 has a hole-formed portion 25 , a first hole-unformed portion 26 and a second hole-unformed portion 27 .
  • the hole forming portion 25 is a portion in which a plurality of holes 24 are formed.
  • the first non-hole-formed portion 26 and the second non-hole-formed portion 27 are portions where the plurality of holes 24 are not formed.
  • the hole forming portion 25 is located in the central portion of the pipe 2 in the extending direction D.
  • the first non-hole forming portion 26 is adjacent to the liquid supply port 21 side of the hole forming portion 25 in the extending direction D.
  • the second hole non-formed portion 27 is adjacent to the hole formed portion 25 in the extension direction D on the liquid outlet 22 side.
  • the inner and outer diameters of the hole-formed portion 25, the first hole-unformed portion 26, and the second hole-unformed portion 27 are not particularly limited.
  • the inner and outer diameters of the hole-formed portion 25 may be larger than the inner and outer diameters of the first non-hole-formed portion 26 and the second non-hole-formed portion 27.
  • the hole-formed portion 25, the first hole-unformed portion 26, and the second hole-unformed portion 27 are separate members, and the small-diameter first hole-unformed portion 26 is provided at both ends of the large-diameter hole-formed portion 25.
  • the pipe 2 may be configured by inserting the second non-hole forming portion 27 .
  • the hollow fiber membrane group 3 is arranged on the outer peripheral side of the pipe 2 so that a plurality of hollow fiber membranes 31 cover the plurality of holes 24 . That is, the hollow fiber membrane group 3 is composed of a plurality of hollow fiber membranes 31 arranged on the outer peripheral side of the pipe 2 so as to cover the plurality of holes 24 .
  • Each of the plurality of hollow fiber membranes 31 is a hollow fiber membrane that allows the gas G to permeate but the liquid L not to permeate.
  • the material, membrane shape, membrane form, and the like of each of the plurality of hollow fiber membranes 31 are not particularly limited.
  • Examples of the material for each of the plurality of hollow fiber membranes 31 include polyolefin resins such as polypropylene, polyethylene, and polymethylpentene; silicone resins such as polydimethylsiloxane copolymers thereof; fluorine resins such as PTFE and vinylidene fluoride. resin.
  • each of the plurality of hollow fiber membranes 31 examples include a porous film, a microporous film, and a homogeneous film having no porosity (non-porous film).
  • Examples of the form of each of the plurality of hollow fiber membranes 31 include a symmetrical membrane (homogeneous membrane) in which the chemical or physical structure of the entire membrane is homogeneous, and an asymmetric membrane in which the chemical or physical structure of the membrane differs depending on the part of the membrane.
  • membranes heterogeneous membranes
  • Asymmetric membranes are membranes having non-porous dense layers and porous layers.
  • the dense layer may be formed anywhere in the film, such as the surface layer of the film or the inside of the porous film.
  • Heterogeneous films also include composite films with different chemical structures and multi-layer structures such as three-layer structures.
  • a heterogeneous film using poly-4-methylpentene-1 resin is particularly preferable because it has a dense layer that blocks the liquid L.
  • a dense layer is formed on the outer surface.
  • the outer diameter of each of the plurality of hollow fiber membranes 31 is not particularly limited. From the viewpoint of increasing the membrane area, the outer diameter of each of the plurality of hollow fiber membranes 31 can be, for example, 500 ⁇ m or less, preferably 350 ⁇ m or less, more preferably 250 ⁇ m or less. On the other hand, from the viewpoint of suppressing breakage, the outer diameter of each of the plurality of hollow fiber membranes 31 can be, for example, 50 ⁇ m or more, preferably 150 ⁇ m or more, and more preferably 200 ⁇ m or more.
  • the hollow fiber membrane group 3 is arranged on the outer peripheral side of the hole formed portion 25 of the pipe 2 and is not arranged on the outer peripheral side of the first non-hole formed portion 26 and the second non-hole formed portion 27 of the pipe 2 .
  • the hollow fiber membrane group 3 is formed in a substantially cylindrical shape so as to surround the hole forming portion 25 .
  • the hollow fiber membrane group 3 is formed of, for example, a blind-like hollow fiber membrane fabric 8 (see FIG. 8).
  • the hollow fiber membrane fabric 8 is a fabric in which a plurality of hollow fiber membranes 31 serving as wefts and warp threads 9 are woven. In the hollow fiber membrane fabric 8, a plurality of hollow fiber membranes 31 are arranged in a reed pattern. The interval between the adjacent hollow fiber membranes 31 can be adjusted by, for example, the thickness of the warp yarns 9, the weaving method of the hollow fiber membrane fabric 8, and the like.
  • an inter-membrane space S1 through which the liquid L can flow is formed between the plurality of hollow fiber membranes 31 (between the adjacent hollow fiber membranes 31).
  • the inter-membrane space S1 is also formed between the plurality of hollow fiber membranes 31 in the circumferential direction of the pipe 2 and is also formed between the plurality of hollow fiber membranes 31 in the circumferential direction of the pipe 2 .
  • the housing 4 is connected to the outer peripheral surface of the pipe 2 and accommodates the hollow fiber membrane group 3 .
  • the housing 4 is formed in a cylindrical shape extending in the extending direction D of the pipe 2 . Both ends of the housing 4 in the extending direction D are airtightly connected to the outer peripheral surface of the pipe 2 .
  • the connection of the housing 4 to the pipe 2 can be performed, for example, by welding, adhesion, or the like. Both ends of the pipe 2 do not need to protrude from the housing 4 , but in the present embodiment, the ends of the pipe 2 protrude from the housing 4 in order to facilitate connection of other members to the pipe 2 .
  • An intake port 41 is formed in the housing 4 .
  • the intake port 41 is an opening for sucking air from the housing 4 .
  • the intake port 41 is composed of a first intake port 42 and a second intake port 43 .
  • Each of the first intake port 42 and the second intake port 43 is an opening for sucking air from the housing 4 .
  • a suction device (not shown) such as a vacuum pump is connected to the first intake port 42 and the second intake port 43, for example.
  • a liquid circulation space S2 is formed in the housing 4 .
  • the liquid flow space S2 is a space between the hollow fiber membrane group 3 and the housing 4 through which the liquid L can flow.
  • the liquid circulation space S2 is a space formed between the hollow fiber membrane group 3 and the housing 4 at least when the degassing module 1 is not in use. Therefore, the hollow fiber membrane group 3 is not in contact with the inner peripheral surface of the housing 4 when the degassing module 1 is not in use. After the degassing module 1 is used, the hollow fiber membrane group 3 may come into contact with the inner peripheral surface of the housing 4 due to swelling of the plurality of hollow fiber membranes 31 .
  • the partition part 5 partitions the area inside the housing 4 into an internal area R1 and an external area R2.
  • the internal region R ⁇ b>1 is a region including the inner peripheral side spaces 32 of the plurality of hollow fiber membranes 31 .
  • the outer region R2 is a region containing the inter-membrane space S1. Therefore, each of the plurality of hollow fiber membranes 31 serves as a boundary between the inner region R1 and the outer region R2.
  • Each of the plurality of hollow fiber membranes 31 prevents passage of the liquid L from the outer region R2 to the inner region R1, and prevents gas G (dissolved gas in the liquid L, gas in the liquid L) from the outer region R2 to the inner region R1 air bubbles, etc.) to pass through.
  • the partition section 5 has a first sealing section 51 and a second sealing section 52 .
  • the first sealing portion 51 is arranged at the first end portion 33 on one side of the hollow fiber membrane group 3 in the extending direction D. As shown in FIG.
  • the first end portion 33 is the end portion on the liquid supply port 21 side in the extending direction D.
  • the first end portion 33 of the hollow fiber membrane group 3 is fixed to the outer peripheral surface of the pipe 2 and the inner peripheral surface of the housing 4 by the first sealing portion 51 .
  • the second sealing portion 52 is arranged at the second end portion 34 on the other side of the hollow fiber membrane group 3 in the extending direction D. As shown in FIG.
  • the second end portion 34 is the end portion on the side of the liquid outlet 22 in the extending direction D. As shown in FIG.
  • the second end portion 34 of the hollow fiber membrane group 3 is fixed to the outer peripheral surface of the pipe 2 and the inner peripheral surface of the housing 4 by the second sealing portion 52 .
  • the first sealing portion 51 and the second sealing portion 52 are made of resin, for example.
  • resins used for the first sealing portion 51 and the second sealing portion 52 include epoxy resins, urethane resins, ultraviolet curing resins, and polyolefin resins such as polyethylene and polypropylene.
  • Each of the first sealing portion 51 and the second sealing portion 52 fills the entire area between the pipe 2 and the housing 4 except for the plurality of hollow fiber membranes 31 in the orthogonal cross section orthogonal to the extending direction D. ing. That is, each of the first sealing portion 51 and the second sealing portion 52 is located between the pipe 2 and the hollow fiber membrane group 3, between the plurality of hollow fiber membranes 31, and between the hollow fiber membrane group 3 and the housing 4. is filled between The inner peripheral space 32 of each of the plurality of hollow fiber membranes 31 is open from the first sealing portion 51 to the liquid supply port 21 side, and is open from the second sealing portion 52 to the liquid discharge port 22 side. is open.
  • the first sealing portion 51 is arranged between the hole forming portion 25 and the first hole non-forming portion 26 in the extending direction D.
  • the second sealing portion 52 is arranged between the hole forming portion 25 and the second hole non-forming portion 27 in the extending direction D.
  • the plurality of holes 24 of the pipe 2 are formed between the first sealing portion 51 and the second sealing portion 52 in the extending direction D.
  • the area between the pipe 2 and the housing 4 on the side of the liquid supply port 21 of the first sealing portion 51 is an internal area R1.
  • a region between the pipe 2 and the housing 4 on the liquid outlet 22 side of the second sealing portion 52 is an internal region R1.
  • the first intake port 42 is arranged on the side opposite to the second sealing portion 52 of the first sealing portion 51 in the extending direction D, that is, on the liquid supply port 21 side of the first sealing portion 51 in the extending direction D. It is The first intake port 42 is connected to an internal region R1 located between the pipe 2 and the housing 4 and on the liquid supply port 21 side of the first sealing portion 51 .
  • the second intake port 43 is arranged on the side of the second sealing portion 52 opposite to the first sealing portion 51 in the extending direction D, that is, on the liquid outlet 22 side of the second sealing portion 52 in the extending direction D. It is The second intake port 43 communicates with an internal region R1 located between the pipe 2 and the housing 4 on the side of the liquid discharge port 22 of the second sealing portion 52 .
  • the baffle 6 separates the first sealing portion 51 and the second sealing portion 52 in the extending direction D in order to detour the liquid L supplied to the liquid supply port 21 and bring it into contact with the plurality of hollow fiber membranes 31 . placed in between.
  • the region of the degassing module 1 between the first sealing portion 51 and the baffle 6 in the extending direction D is called an upstream portion 10
  • the region between the baffle 6 and the second sealing portion 52 in the extending direction D is called an upstream portion 10.
  • the region of the degassing module 1 in between is called the downstream portion 11 .
  • the baffle 6 partitions the pipe inner channel 23 and the inter-membrane space S1 in the extending direction D. That is, the pipe internal flow path 23 is partitioned in the extending direction D by the baffle 6 . In addition, the inter-membrane space S1 is partitioned in the extending direction D by the baffle 6 . Therefore, the liquid L supplied from the liquid supply port 21 to the in-pipe flow path 23 exits the pipe 2 in the upstream section 10, passes through the inter-membrane space S1, and passes through the baffle clearance C1 between the baffle 6 and the housing 4. and enters the pipe 2 at the downstream portion 11 through the intermembrane space S1.
  • the position of the baffle 6 in the extending direction D can be any position between the first sealing portion 51 and the second sealing portion 52 .
  • the baffle 6 divides the space between the first sealing portion 51 and the second sealing portion 52 into three in the extending direction D. can be placed in the center of the
  • the baffle 6 has an inner baffle 61 and an outer baffle 62.
  • the inner baffle 61 is arranged on the inner peripheral side of the pipe 2 and partitions the pipe inner flow path 23 in the extending direction D.
  • the outer baffle 62 is arranged on the outer peripheral side of the pipe 2 and partitions at least part of the inter-membrane space S1 in the extending direction D.
  • the inner baffle 61 may completely partition the pipe inner channel 23 in the extending direction D, or may imperfectly partition the pipe inner channel 23 in the extending direction D. That is, even if the inner baffle 61 completely blocks the pipe channel 23 so that the liquid L cannot pass from the pipe channel 23 of the upstream portion 10 to the pipe channel 23 of the downstream portion 11, good. In addition, the inner baffle 61 partially blocks the pipe internal flow path 23 so that the liquid L can pass from the pipe internal flow path 23 of the upstream section 10 to the pipe internal flow path 23 of the downstream section 11. good. Even if the inner baffle 61 partially closes the pipe channel 23 , the inner baffle 61 prevents the passage of the liquid L from the pipe channel 23 in the upstream portion 10 to the pipe channel 23 in the downstream portion 11 . Since it is partially blocked, the liquid L supplied to the liquid supply port 21 can be detoured and brought into contact with the plurality of hollow fiber membranes 31 .
  • the inner baffle 61 is made of resin, for example.
  • the resin used for the inner baffle 61 include urethane-based resins such as polyurethane (PU) and thermoplastic polyurethane (TPU); polycarbonate (PC); polyvinyl chloride (PVC); Vinyl chloride resin; acrylic resin such as polyacrylic acid, polymethacrylic acid, polymethyl acrylate, polymethyl methacrylate (PMMA), polyethyl methacrylate; polyethylene terephthalate (PET), polybutylene terephthalate Polytrimethylene terephthalate, polyethylene naphthalate, polyester resins such as polybutylene naphthalate; polyamide resins such as nylon (registered trademark); polystyrene (PS), imide-modified polystyrene, acrylonitrile Polystyrene resins such as butadiene-styrene (ABS) resin, imide-modified ABS resin, styrene-acrylonit
  • the outer baffle 62 may completely partition the inter-membrane space S1 in the extending direction D, or may imperfectly partition the inter-membrane space S1 in the extending direction D. That is, the outer baffle 62 may completely block the inter-membrane space S1 so that the liquid L cannot pass from the inter-membrane space S1 of the upstream portion 10 to the inter-membrane space S1 of the downstream portion 11 . Further, the outer baffle 62 may partially block the inter-membrane space S1 so as to allow passage of the liquid L from the inter-membrane space S1 of the upstream portion 10 to the inter-membrane space S1 of the downstream portion 11 .
  • the outer baffle 62 is separated from the housing 4. However, the outer baffle 62 may be in contact with the housing 4 as long as the baffle clearance C1 is formed even partially between the outer baffle 62 and the housing 4 . Further, the outer baffle 62 is not arranged in the liquid circulation space S2, but is arranged in the liquid circulation space S2 if the baffle clearance C1 is formed even partially between the outer baffle 62 and the housing 4. may
  • the outer baffle 62 is made of resin, for example.
  • the resin used for the outer baffle 62 include urethane-based resins such as polyurethane (PU) and thermoplastic polyurethane (TPU); polycarbonate (PC); polyvinyl chloride (PVC); Vinyl chloride resin; acrylic resin such as polyacrylic acid, polymethacrylic acid, polymethyl acrylate, polymethyl methacrylate (PMMA), polyethyl methacrylate; polyethylene terephthalate (PET), polybutylene terephthalate Polytrimethylene terephthalate, polyethylene naphthalate, polyester resins such as polybutylene naphthalate; polyamide resins such as nylon (registered trademark); polystyrene (PS), imide-modified polystyrene, acrylonitrile Polystyrene resins such as butadiene-styrene (ABS) resin, imide-modified ABS resin, styrene-acrylonit
  • the support part 7 is arranged on the liquid outlet 22 side of the baffle 6 in the extension direction D and supports at least part of the plurality of hollow fiber membranes 31 with respect to the pipe 2 .
  • the plurality of hollow fiber membranes 31 are pressed toward the pipe 2 by the flow of the liquid L entering the pipe 2, and the hollow fiber membranes 31 on the outer peripheral side slip between the hollow fiber membranes 31 on the inner peripheral side. Equally, the inter-membrane space S1 serving as the flow path for the liquid L is narrowed.
  • each of the plurality of hollow fiber membranes 31 is a heterogeneous membrane having a dense layer, or has an outer diameter of 500 ⁇ m or less, 350 ⁇ m or less, or 250 ⁇ m or less, this tendency becomes stronger. Therefore, the support portion 7 supports at least a portion of the plurality of hollow fiber membranes 31 with respect to the pipe 2 so as to resist the flow of the liquid L entering the pipe 2 in the downstream portion 11 .
  • the support portion 7 may support all of the plurality of hollow fiber membranes 31 with respect to the pipe 2 , or may support only a portion of the plurality of hollow fiber membranes 31 with respect to the pipe 2 . In the present embodiment, the support portion 7 supports all of the plurality of hollow fiber membranes 31 with respect to the pipe 2 from the viewpoint of further suppressing narrowing of the inter-membrane space S1.
  • the support portion 7 may have any shape, structure, etc. as long as it can support at least a portion of the plurality of hollow fiber membranes 31 .
  • the support portion 7 is directly or indirectly connected to at least a portion of the plurality of hollow fiber membranes 31 and the pipe 2 . That the support portion 7 is indirectly connected to at least a portion of the plurality of hollow fiber membranes 31 and the pipe 2 is, for example, between the support portion 7 and at least a portion of the plurality of hollow fiber membranes 31 and the pipe 2 In some cases, other members may be arranged.
  • the support portion 7 may be filled in the entire area between the pipe 2 and the hollow fiber membrane group 3 and the entire area of the inter-membrane space S1.
  • the support portion 7 may be filled only in the pipe 2, a part of the hollow fiber membrane group 3, and a part of the inter-membrane space S1.
  • the support part 7 is separated from the housing 4 and a support part clearance C2 is formed between the support part 7 and the housing 4 .
  • a support part clearance C2 is formed between the support part 7 and the housing 4 .
  • the support portion 7 and the The support portion 7 may be in contact with the housing 4 as long as the support portion clearance C ⁇ b>2 is formed even partially between the support portion 7 and the housing 4 .
  • the support portion 7 is spaced apart from the housing 4 in order to reduce the pressure loss of the liquid L and lengthen the contact time between the plurality of hollow fiber membranes 31 and the liquid L.
  • the support part 7 is not arranged in the liquid circulation space S2. However, if the movement of the liquid L from the liquid supply port 21 side (the baffle 6 side) to the liquid discharge port 22 side (the second hole non-forming portion 27 side) with respect to the support portion 7 is not prevented, or the support portion 7 and the The support portion 7 may be arranged in the liquid circulation space S2 as long as the support portion clearance C2 is formed even partially between the support portion 7 and the housing 4 . In this embodiment, from the viewpoint of reducing the pressure loss of the liquid L and increasing the contact time between the plurality of hollow fiber membranes 31 and the liquid L, the support section 7 is not arranged in the liquid circulation space S2.
  • the plurality of holes 24 of the pipe 2 are located on the liquid supply port 21 side (baffle 6 side) of the support section 7 in the extension direction D and on the liquid discharge port 22 side of the support section 7 in the extension direction D (second hole non-formation side). 27 side) and may be formed on only one side.
  • the plurality of holes 24 of the pipe 2 are located on the side of the liquid supply port 21 of the support section 7 in the extending direction D (baffle 6 side) and in the extending direction D. It is formed both on the liquid discharge port 22 side (the second non-hole forming portion 27 side) of the support portion 7 at D.
  • the position of the support portion 7 in the extending direction D can be any position between the baffle 6 and the second non-hole forming portion 27 .
  • the support portion 7 is arranged in the central portion when the space between the baffle 6 and the second non-hole-formed portion 27 is divided into three in the extending direction D. can do.
  • the support portion 7 is made of resin, for example.
  • the resin used for the support portion 7 include urethane-based resins such as polyurethane (PU) and thermoplastic polyurethane (TPU); polycarbonate (PC); polyvinyl chloride (PVC); Vinyl chloride resin; acrylic resin such as polyacrylic acid, polymethacrylic acid, polymethyl acrylate, polymethyl methacrylate (PMMA), polyethyl methacrylate; polyethylene terephthalate (PET), polybutylene terephthalate Polytrimethylene terephthalate, polyethylene naphthalate, polyester resins such as polybutylene naphthalate; polyamide resins such as nylon (registered trademark); polystyrene (PS), imide-modified polystyrene, acrylonitrile Polystyrene resins such as butadiene-styrene (ABS) resin, imide-modified ABS resin, styrene-acrylonitrile copoly
  • FIG. 7 and 8 are schematic cross-sectional views explaining an example of a method of forming the baffle 6 and the support portion 7.
  • FIG. 7 When forming the baffle 6 and the support portion 7, first, as shown in FIG. This disk-shaped member becomes the inner baffle 61 .
  • the hollow fiber membrane fabric 8 is wound around the pipe 2 so as to cover the plurality of holes 24 of the pipe 2 .
  • the hollow fiber membrane fabric 8 is, as described above, a fabric in which a plurality of hollow fiber membranes 31 serving as wefts are woven with the warp 9 .
  • the first molten resin 13 is applied to a position corresponding to the outer baffle 62 of the inner surface 8a of the fabric.
  • a second molten resin 14 is applied to a position corresponding to the support portion 7 on the surface 8a.
  • the hollow fiber membrane fabric 8 coated with the first molten resin 13 and the second molten resin 14 is wound around the pipe 2 .
  • the first molten resin 13 and the second molten resin 14 impregnate the hollow fiber membrane fabric 8 on the inner layer side and the hollow fiber membrane fabric 8 on the outer layer side, and fill the positions corresponding to the outer baffle 62 and the support section 7. state.
  • the first molten resin 13 and the second molten resin 14 are cured, so that the first molten resin 13 becomes the outer baffle 62 and the second molten resin 14 becomes the support portion 7 .
  • the internal region R1 is sucked from the first intake port 42 and the second intake port 43, and the liquid L is supplied from the liquid supply port 21 to the pipe internal channel 23.
  • Intake of the internal region R1 from the first intake port 42 and the second intake port 43 is performed by connecting a suction device (not shown) such as a vacuum pump to the first intake port 42 and the second intake port 43, for example. It can be done by activating the device.
  • a suction device such as a vacuum pump
  • the liquid supplied to the pipe internal flow path 23 passes through the plurality of holes 24 formed in the pipe 2 in the upstream section 10 so as to bypass the baffle 6, exits the pipe 2, and enters the inter-membrane space S1. pass through
  • gas G such as dissolved gas in the liquid L and air bubbles contained in the liquid L is released into the plurality of hollow fiber membranes. 31, whereby the liquid L is degassed.
  • the liquid L passes through the baffle clearance C 1 , passes through the inter-membrane space S 1 in the downstream portion 11 , and enters the pipe 2 through a plurality of holes 24 formed in the pipe 2 .
  • each of the plurality of hollow fiber membranes 31 since the inner peripheral space 32 of each of the plurality of hollow fiber membranes 31 is in a decompressed state, the dissolved gas in the liquid L and the gas G such as air bubbles contained in the liquid L are released into the plurality of hollow fibers. Each of the membranes 31 is passed through, whereby the liquid L is degassed. After that, the deaerated liquid L entering the pipe 2 is discharged from the liquid discharge port 22 .
  • the internal region R1 is sucked from the first intake port 42 and the second intake port 43, and the liquid L is supplied from the liquid supply port 21 to the pipe channel 23.
  • the liquid L can be degassed.
  • the pipe internal flow path 23 and the inter-membrane space S1 are partitioned in the extending direction D by the baffle 6 . Therefore, when the liquid L is supplied from the liquid supply port 21 to the pipe internal channel 23, the liquid L exits the pipe 2 on the liquid supply port 21 side of the baffle 6, passes through the inter-membrane space S1, and flows through the baffle 6 and the housing.
  • the plurality of hollow fiber membranes 31 are pressed toward the pipe 2 by the flow of the liquid L that crosses the baffle 6 and enters the pipe 2 again.
  • a support portion 7 that supports at least a portion of the plurality of hollow fiber membranes 31 with respect to the pipe 2 is arranged on the liquid outlet 22 side of the baffle 6 , which is the downstream side of the baffle 6 . Therefore, due to the flow of the liquid L that crosses the baffle 6 and enters the pipe 2 again, the hollow fiber membranes 31 on the outer peripheral side slip between the hollow fiber membranes 31 on the inner peripheral side, thereby forming a flow path for the liquid L. Narrowing of the interspace S1 is suppressed. Thereby, the pressure loss of the liquid L can be reduced as compared with the case where the support portion 7 is not arranged.
  • this degassing module 1 since the support portion 7 is separated from the housing 4 , the liquid L that has passed over the baffle 6 can flow along the inner peripheral surface of the housing 4 until it passes over the support portion 7 . . As a result, it is possible to widen the area where the plurality of hollow fiber membranes 31 and the liquid L are in contact with each other on the side of the liquid discharge port 22 of the support section 7 which is the downstream side of the support section 7 .
  • the baffle 6 is separated from the housing 4, so the pressure loss of the liquid L when the liquid L passes through the baffle clearance C1 between the baffle 6 and the housing 4 can be reduced. can be done.
  • the baffle 6 partitions the entire inter-membrane space S1 in the extending direction D, so that the liquid coming out of the pipe 2 is located on the liquid supply port 21 side of the baffle 6, which is the upstream side of the baffle 6. L can flow to the outside of the hollow fiber membrane group 3 .
  • the contact time between the plurality of hollow fiber membranes 31 and the liquid L can be lengthened, and the deaeration efficiency of the liquid L can be improved.
  • the liquid circulation space S2 is formed between the hollow fiber membrane group 3 and the housing 4, the liquid L coming out of the pipe 2 passes through the inter-membrane space S1. It can enter the space S2 and then enter the pipe 2 from the liquid flow space S2 through the inter-membrane space S1. Therefore, the pressure loss of the liquid L can be reduced while the liquid L is brought into contact with the plurality of hollow fiber membranes 31 .
  • the degassing module 1 since the support portion 7 is not arranged in the liquid circulation space S2, compared to the case where the support portion 7 is arranged in the liquid circulation space S2, the amount of the liquid L passing through the liquid circulation space S2 is reduced. pressure loss can be reduced.
  • the baffle 6 has an inner baffle 61 arranged on the inner peripheral side of the pipe 2 and an outer baffle 62 arranged on the outer peripheral side of the pipe 2, so that the pipe 2 extends in the extending direction D.
  • the baffle 6 can be arranged without dividing into two.
  • each of the first sealing portion 51 and the second sealing portion 52 has a plurality of hollow fiber membranes between the pipe 2 and the housing 4 in an orthogonal cross section orthogonal to the extending direction D.
  • the entire area except 31 is filled, and a plurality of holes 24 of the pipe 2 are formed between the first sealing portion 51 and the second sealing portion 52 . Therefore, the first sealing portion 51 and the second sealing portion 52 can partition the area inside the housing 4 into the internal area R1 and the external area R2.
  • the extending direction D The liquid L can be brought into contact with the plurality of hollow fiber membranes 31 over a long range.
  • the first inlet 42 and the second inlet 43 are formed outside the first sealing section 51 and the second sealing section 52 in the extending direction D. Air can be sucked into the inner peripheral side spaces 32 of the plurality of hollow fiber membranes 31 from both ends of the hollow fiber membranes 31 . Thereby, the degassing efficiency of the liquid L can be improved.
  • the pressure loss of the liquid L can be reduced.
  • the present invention is not limited to the above embodiments.
  • the pipe and the housing are separate members, but the pipe and the housing may be integrated as long as there is no manufacturing problem.
  • Example 1 As Experiment 1, the pressure loss of the liquid was measured using the degassing module of Comparative Example 1 that did not include the supporting portion.
  • the degassing module of Comparative Example 1 was the same as the degassing module 1 according to the embodiment, except that it did not have a support.
  • the flow rate of the liquid supplied to the degassing module was changed, and the pressure loss of the liquid was measured at three points: the upstream section, the baffle clearance between the baffle and the housing, and the downstream section.
  • the measurement results are shown in FIG. 9 is a graph showing the measurement results of pressure loss in Comparative Example 1.
  • FIG. 9 is a graph showing the measurement results of pressure loss in Comparative Example 1.
  • the liquid pressure loss was much larger in the upstream and downstream parts compared to the baffle clearance between the baffle and the housing. Moreover, the pressure loss of the liquid was significantly larger in the downstream portion than in the upstream portion. From these results, in the downstream part, the hollow fiber membranes on the outer peripheral side are pushed between the hollow fiber membranes on the inner peripheral side by pressing the plurality of hollow fiber membranes toward the pipe side in the flow of liquid entering the pipe. It is thought that the inter-membrane space narrowed, and as a result, the pressure loss of the liquid increased.
  • Example 2 As Experiment 2, the degassing module of Comparative Example 1 and the degassing module of Example 1 were used to measure the pressure loss of the liquid.
  • the degassing module of Example 1 was the same as the degassing module 1 according to the embodiment described above.
  • the flow rate of the liquid supplied to the degassing module was changed, and the pressure loss of the liquid from the liquid supply port to the liquid discharge port of the degassing module was measured.
  • FIG. 10 shows the measurement results.
  • FIG. 10 is a graph showing measurement results of pressure loss in Example 1 and Comparative Example 1.
  • the pressure loss of the liquid in the degassing module of Example 1 provided with the support portion was significantly smaller than that in the degassing module of Comparative Example 1 not provided with the support portion.
  • the pressure loss of the liquid in the degassing module of Example 1 is greater than the pressure loss of the liquid in the degassing module of Comparative Example 1. decreased by more than 60%. From these results, it is considered that the pressure loss of the liquid can be reduced by providing the support portion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Manufacturing & Machinery (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
PCT/JP2022/046122 2021-12-28 2022-12-15 脱気モジュール及び液体の脱気方法 Ceased WO2023127506A1 (ja)

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KR1020247011336A KR20240051286A (ko) 2021-12-28 2022-12-15 탈기 모듈 및 액체의 탈기 방법
JP2023570826A JP7662059B2 (ja) 2021-12-28 2022-12-15 脱気モジュール及び液体の脱気方法
CN202280082142.XA CN118382494A (zh) 2021-12-28 2022-12-15 脱气组件及液体的脱气方法
EP22915730.0A EP4458455A4 (en) 2021-12-28 2022-12-15 DEGASSING MODULE AND METHOD FOR DEGASSING LIQUID
US18/719,866 US20250041764A1 (en) 2021-12-28 2022-12-15 Degassing module and method for degassing liquid

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CN120393741B (zh) * 2025-07-03 2025-09-09 安徽科纳诺膜科技有限公司 一种色谱脱气组件封装设备及其工艺

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US20180133620A1 (en) * 2015-06-22 2018-05-17 3M Innovative Properties Company Compact cross-flow contactor
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TW202330077A (zh) 2023-08-01
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CN118382494A (zh) 2024-07-23
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