WO2025158865A1 - 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

Info

Publication number
WO2025158865A1
WO2025158865A1 PCT/JP2024/045979 JP2024045979W WO2025158865A1 WO 2025158865 A1 WO2025158865 A1 WO 2025158865A1 JP 2024045979 W JP2024045979 W JP 2024045979W WO 2025158865 A1 WO2025158865 A1 WO 2025158865A1
Authority
WO
WIPO (PCT)
Prior art keywords
degassing
liquid
hollow fiber
fiber membranes
extension 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.)
Pending
Application number
PCT/JP2024/045979
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
航 山本
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 JP2025543738A priority Critical patent/JPWO2025158865A1/ja
Publication of WO2025158865A1 publication Critical patent/WO2025158865A1/ja
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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

Definitions

  • This disclosure relates to a degassing module and a method for degassing a liquid.
  • degassing modules that degas liquids using degassing elements (hollow fiber elements) with multiple hollow fiber membranes have been known (see, for example, Patent Document 1).
  • Sweep mode is a method of degassing a liquid by supplying a liquid to the outside of a hollow fiber membrane and then supplying a sweep gas into the hollow fiber membrane.
  • Vacuum mode is a method of degassing a liquid by supplying a liquid to the outside of a hollow fiber membrane and then drawing a vacuum inside the hollow fiber membrane. In vacuum mode, the pressure difference between the inside and outside of the hollow fiber membrane is greater than in sweep mode, so more gas passes through the hollow fiber membrane than in sweep mode.
  • the present disclosure therefore aims to provide a degassing module and a method for degassing liquid that allows for a large flow rate of the liquid to be degassed while preventing the module from becoming too large.
  • the degassing module disclosed herein comprises a plurality of degassing elements arranged in the extension direction, each degassing element having a liquid distribution pipe with a plurality of openings formed therein and extending in an extension direction, and a plurality of hollow fiber membranes arranged around the liquid distribution pipe so as to cover the plurality of openings; a housing that accommodates the plurality of degassing elements; a pipe connection that connects the liquid distribution pipes of adjacent degassing elements; and a partition that separates the area within the housing, using the plurality of hollow fiber membranes as boundaries, into an internal area including the hollow portions of the plurality of hollow fiber membranes and an external area including the hollow portion of the liquid distribution pipe.
  • the housing has a plurality of cylindrical portions that surround each of the plurality of degassing elements, a liquid supply port for supplying liquid to the hollow portion of the liquid distribution pipe, a gas port for discharging gas that has permeated the plurality of hollow fiber membranes, and a plurality of liquid discharge ports provided in each of the plurality of cylindrical portions for discharging liquid that has left the liquid distribution pipe.
  • this degassing module multiple degassing elements are arranged in the extension direction, and the liquid flow pipes of adjacent degassing elements are connected by pipe connectors.
  • a partition separates the area within the housing, with the multiple hollow fiber membranes as the boundary, into an internal area including the hollow portions of the multiple hollow fiber membranes and an external area including the hollow portions of the liquid flow pipes. This allows liquid to be degassed in multiple degassing elements, enabling a large flow rate of degassed liquid.
  • the housing has multiple tubular sections surrounding each of the multiple degassing elements, and multiple liquid discharge ports provided in each of the multiple tubular sections for discharging liquid exiting the liquid flow pipes.
  • the multiple degassing elements include a first end degassing element located at an end in a first extension direction, which is one of the extension directions, and a second end degassing element located at an end in a second extension direction, which is the opposite direction to the first extension direction.
  • the first end degassing element has a hollow portion of a liquid flow pipe that is blocked at its end in the first extension direction, and the liquid supply port is connected to the second end of the liquid flow pipe of the second end degassing element.
  • the first end of the hollow portion of the liquid flow pipe of the first end degassing element is blocked at its end in the first extension direction, and the liquid supply port is connected to the second end of the liquid flow pipe of the second end degassing element. Therefore, when liquid is supplied to the liquid supply port, the liquid is supplied to the hollow portion of the liquid flow pipe in each degassing element, flows out of the liquid flow pipe through the multiple openings, and is degassed by coming into contact with the multiple hollow fiber membranes. The degassed liquid then comes into contact with the hollow fiber membranes and is discharged from the liquid discharge ports without returning to the hollow portion of the liquid distribution pipe.
  • the liquid does not flow in a direction that presses the hollow fiber membranes against the liquid distribution pipe, but rather in a direction that moves the hollow fiber membranes away from the liquid distribution pipe.
  • This prevents an increase in pressure loss when the liquid passes through the hollow fiber membranes, and therefore prevents a decrease in the liquid flow rate.
  • a liquid supply device with a relatively low output can be used to supply liquid to the degassing module.
  • a first end communication space is formed on the first extension direction side of the first end degassing element, which is connected to the hollow portions of the multiple hollow fiber membranes of the first end degassing element, and the gas port may have a first end gas port adjacent to the first end communication space and connected to the first end communication space.
  • a first end communication space is formed on the first extension direction side of the first end degassing element, which is connected to the hollow portions of the multiple hollow fiber membranes of the first end degassing element, and the first end gas port is adjacent to the first end communication space and connected to the first end communication space. Therefore, it is possible to suction the hollow portions of the multiple hollow fiber membranes or supply sweep gas to the hollow portions of the multiple hollow fiber membranes from the end of the first extension direction side of the first end degassing element. This further improves degassing efficiency.
  • a second end communication space communicating with the hollow portions of the multiple hollow fiber membranes of the second end degassing element is formed on the second extension direction side of the second end degassing element, and the gas port may have a second end gas port adjacent to the second end communication space and communicating with the second end communication space.
  • a second end communication space communicating with the hollow portions of the multiple hollow fiber membranes of the second end degassing element is formed on the second extension direction side of the second end degassing element, and the second end gas port is adjacent to the second end communication space and communicating with the second end communication space. Therefore, it is possible to suction the hollow portions of the multiple hollow fiber membranes or supply sweep gas to the hollow portions of the multiple hollow fiber membranes from the end of the second extension direction side of the second end degassing element. This further improves degassing efficiency.
  • the multiple degassing elements include a first side degassing element and a second side degassing element adjacent to each other in the extension direction, and an intermediate communication space is formed between the first side degassing element and the second side degassing element, communicating with the hollow portions of the multiple hollow fiber membranes of the first side degassing element and the hollow portions of the multiple hollow fiber membranes of the second side degassing element, and the gas port may have an intermediate gas port adjacent to the intermediate communication space and communicating with the intermediate communication space.
  • an intermediate communication space is formed between the first side degassing element and the second side degassing element, communicating with the hollow portions of the multiple hollow fiber membranes of the first side degassing element and the hollow portions of the multiple hollow fiber membranes of the second side degassing element, and the intermediate gas port is adjacent to the intermediate communication space and communicating with the intermediate communication space.
  • a first end communication space connected to the hollow portions of the multiple hollow fiber membranes of the first end degassing element is formed on the first extension direction side of the first end degassing element
  • a second end communication space connected to the hollow portions of the multiple hollow fiber membranes of the second end degassing element is formed on the second extension direction side of the second end degassing element
  • the multiple degassing elements include a first side degassing element and a second side degassing element adjacent to each other in the extension direction
  • an intermediate communication space connected to the hollow portions of the multiple hollow fiber membranes of the first side degassing element and the multiple hollow fiber membranes of the second side degassing element is formed between the first side degassing element and the second side degassing element
  • the gas port may have a first end gas port adjacent to the first end communication space and connected to the first end communication space, a second end gas port adjacent to the second end communication space and connected to the second end communication space,
  • a first end communicating space communicating with the hollow portions of the hollow fiber membranes of the first end degassing element is formed on the first extension direction side of the first end degassing element, and a first end gas port is adjacent to the first end communicating space and communicates with the first end communicating space.
  • a second end communicating space communicating with the hollow portions of the hollow fiber membranes of the second end degassing element is formed on the second extension direction side of the second end degassing element, and a second end gas port is adjacent to the second end communicating space and communicates with the second end communicating space.
  • an intermediate communicating space communicating with the hollow portions of the hollow fiber membranes of the first side degassing element and the hollow portions of the hollow fiber membranes of the second side degassing element is formed between the first side degassing element and the second side degassing element, which are adjacent to each other in the extension direction.
  • An intermediate gas port is adjacent to the intermediate communicating space and communicates with the intermediate communicating space. This makes it possible to suction the hollow spaces of the multiple hollow fiber membranes or supply sweep gas to the hollow spaces of the multiple hollow fiber membranes from the end of the first end degassing element in the first extension direction, the end of the second end degassing element in the second extension direction, and between the first end degassing element and the second end degassing element. This further improves degassing efficiency.
  • the multiple cylindrical portions may include a first cylindrical portion surrounding the first side degassing element and a second cylindrical portion surrounding the second side degassing element, the housing having a housing connection portion connecting the first cylindrical portion and the second cylindrical portion, and the intermediate communication space may be formed between the housing connection portion and the pipe connection portion.
  • the multiple cylindrical portions include a first cylindrical portion surrounding the first side degassing element and a second cylindrical portion surrounding the second side degassing element, the housing having a housing connection portion connecting the first cylindrical portion and the second cylindrical portion, and the intermediate communication space is formed between the housing connection portion and the pipe connection portion. Therefore, an intermediate communication space can be formed between the first side degassing element and the second side degassing element with a simple configuration.
  • each of the multiple degassing elements is provided with: a first fixing portion located at the end on the first extension direction side, which is one direction in the extension direction, and fixing the multiple hollow fiber membranes to the liquid circulation pipe so as to seal between the liquid circulation pipe and the multiple hollow fiber membranes and open the hollow portion of the liquid circulation pipe and the multiple hollow fiber membranes; and a second fixing portion located at the end on the second extension direction side, which is the opposite direction to the first extension direction, and fixing the multiple hollow fiber membranes to the liquid circulation pipe so as to seal between the liquid circulation pipe and the multiple hollow fiber membranes and open the hollow portion of the liquid circulation pipe and the multiple hollow fiber membranes; and the partition portion is provided with: a first fixing portion located at the end on the second extension direction side, which is the opposite direction to the first extension direction, and fixing the multiple hollow fiber membranes to the liquid circulation pipe so as to seal between the liquid circulation pipe and the multiple hollow fiber membranes and open the hollow portion of the liquid circulation pipe and the multiple hollow fiber membranes;
  • the outer region may have a first outer space located between the first outer space and the second outer space, and a second outer space located between the third outer space and the fourth outer space
  • the plurality of liquid discharge ports may include a first liquid discharge port adjacent to the first outer space and in communication with the first outer space, and a second liquid discharge port adjacent to the second outer space and in communication with the second outer space.
  • the external region has a first outer space located between the first and second sealed parts and a second outer space located between the third and fourth sealed parts
  • the multiple liquid discharge ports include a first liquid discharge port adjacent to the first outer space and communicating with the first outer space, and a second liquid discharge port adjacent to the second outer space and communicating with the second outer space.
  • liquid discharged from the multiple openings of the liquid flow pipe of the first degassing element to the first outer space does not flow into the second outer space, but instead comes into contact with the multiple hollow fiber membranes of the first degassing element and is degassed, and then passes through the gap between the first degassing element and the first tubular part and is discharged from the first liquid discharge port.
  • liquid discharged from the multiple openings of the liquid flow pipe of the second degassing element to the second outer space does not flow into the first outer space, but comes into contact with the multiple hollow fiber membranes of the second degassing element and is degassed, and then passes through the second gap between the second degassing element and the second tubular part and is discharged from the second liquid discharge port. This further shortens the length of the discharge path for liquid discharged from the multiple openings in the liquid flow pipes of the first and second degassing elements, further preventing the first and second cylindrical portions from becoming larger.
  • each of the multiple degassing elements has a first fixing portion located at the end on the first extension direction side, which is one direction in the extension direction, and fixing the multiple hollow fiber membranes to the liquid flow pipe so as to seal between the liquid flow pipe and the multiple hollow fiber membranes and open the hollow portion of the liquid flow pipe and the multiple hollow fiber membranes; and a second fixing portion located at the end on the second extension direction side, which is the opposite direction to the first extension direction in the extension direction, and fixing the multiple hollow fiber membranes to the liquid flow pipe so as to seal between the liquid flow pipe and the multiple hollow fiber membranes and open the hollow portion of the liquid flow pipe and the multiple hollow fiber membranes; and the partition portion may have a first sealing portion that seals between the first fixing portion and the cylindrical portion of each of the multiple degassing elements, and a second sealing portion that seals between the second fixing portion and the cylindrical portion of each of the multiple degassing elements.
  • the first and second fixing portions and the tubular portion of each of the multiple degassing elements are sealed with first and second sealing portions, so that liquid that leaks out of the liquid flow pipe from the multiple openings is discharged from the liquid discharge port without flowing into other degassing elements. This further shortens the length of the liquid discharge path, further preventing the multiple tubular portions from becoming larger.
  • a liquid degassing method is a method for degassing a liquid using a degassing module described in any of [1] to [9], in which the gas port of the degassing module is suctioned and liquid is supplied to the liquid supply port of the degassing module.
  • the liquid degassing method when the gas port of any of the above degassing modules is suctioned and liquid is supplied to the liquid supply port, the liquid is degassed in multiple degassing elements, making it possible to degas the liquid at a large flow rate.
  • each of the multiple degassing elements has a liquid discharge port for discharging liquid that has left the liquid circulation pipe.
  • a liquid degassing method is a method for degassing a liquid using the degassing module described in [6], in which a sweep gas is supplied to at least one of the intermediate gas port, first end gas port, and second end gas port of the degassing module, and liquid is supplied to the liquid supply port of the degassing module.
  • the degassing module described in [6] is used to supply a sweep gas to at least one of the intermediate gas port, first end gas port, and second end gas port of the degassing module, and liquid is supplied to the liquid supply port of the degassing module.
  • This degassing method degasses the liquid in the multiple degassing elements, thereby enabling a large flow rate of the liquid to be degassed. Furthermore, in this degassing module, each of the multiple degassing elements has a liquid discharge port for discharging the liquid exiting the liquid flow pipe. This shortens the length of the liquid discharge path in the gaps between the multiple degassing elements and the housing. This reduces the pressure loss of the liquid flowing through the gaps, allowing the diameters of the multiple cylindrical portions to be reduced. This prevents the module from becoming too large.
  • a sweep gas may be supplied to the intermediate gas port of the degassing module.
  • gas that has permeated the multiple hollow fiber membranes can be discharged from the first end gas port and the second end gas port.
  • the first end gas port and the second end gas port of the degassing module may be suctioned.
  • suctioning the first end gas port and the second end gas port of the degassing module can improve the discharge efficiency of gas that has permeated the multiple hollow fiber membranes.
  • a sweep gas may be supplied to the first end gas port and the second end gas port of the degassing module.
  • this liquid degassing method by supplying a sweep gas to the first end gas port and the second end gas port of the degassing module, gas that has permeated the multiple hollow fiber membranes can be discharged from the middle gas port.
  • the intermediate gas port of the degassing module may be suctioned.
  • suctioning the intermediate gas port of the degassing module can improve the efficiency of discharging gas that has permeated the multiple hollow fiber membranes.
  • FIG. 2 is a schematic cross-sectional view of a degassing module according to an embodiment.
  • FIG. 2 is a schematic front view of the degassing element.
  • 3 is a schematic cross-sectional view taken along line III-III in FIG. 2.
  • 3 is a schematic cross-sectional view showing a part of the degassing element shown in FIG. 2.
  • FIG. 3 is a schematic cross-sectional view showing a part of the degassing element shown in FIG. 2.
  • FIG. 2 is a schematic cross-sectional view showing a part of the degassing module shown in FIG. 1.
  • 2 is a schematic cross-sectional view showing a part of the degassing module shown in FIG. 1.
  • FIG. 10 is a schematic cross-sectional view of another example of a degassing module.
  • FIG. 10 is a schematic cross-sectional view of another example of a degassing module.
  • FIG. 10 is a schematic cross-sectional view of another example of a degassing module.
  • FIG. 10 is a schematic cross-sectional view of a degassing module for explaining another example of a method for degassing a liquid.
  • FIG. 10 is a schematic cross-sectional view of a degassing module for explaining another example of a method for degassing a liquid.
  • FIG. 1 is a schematic cross-sectional view of a degassing module according to an embodiment.
  • the degassing module 1 according to this embodiment is a module for degassing a liquid L.
  • the liquid L is not particularly limited, but may be, for example, seawater, drinking water, pure water, ultrapure water, or other water; an aqueous solution containing ammonium sulfate, a surfactant, or the like; an organic solvent such as alcohol or hydrocarbon; or an ionic liquid.
  • the degassing module 1 includes a plurality of degassing elements 2, a housing 3, a pipe connection 4, a baffle 5, and a partition 7. Note that FIG. 1 shows only the housing 3 in cross section.
  • Figure 2 is a schematic front view of the degassing element.
  • Figure 3 is a schematic cross-sectional view taken along line III-III in Figure 2.
  • Figure 4 is a schematic cross-sectional view showing a portion of the degassing element shown in Figure 2.
  • Figure 5 is a schematic cross-sectional view showing a portion of the degassing element shown in Figure 2.
  • the degassing element 2 is used to degas a liquid L.
  • the degassing element 2 includes a liquid circulation pipe 21, a plurality of hollow fiber membranes 22, a first fixing portion 24, and a second fixing portion 25.
  • the liquid flow pipe 21 is a cylindrical member extending in extension direction D.
  • One of the two extension directions D is called the first extension direction D1, and the other is called the second extension direction D2.
  • the upper side is the first extension direction D1
  • the lower side is the second extension direction D2.
  • the end of the degassing element 2 on the first extension direction D1 side is called the first element end 2a
  • the end of the degassing element 2 on the second extension direction D2 side is called the second element end 2b.
  • the hollow portion 21a of the liquid flow pipe 21 is a flow path (internal flow path) through which the liquid L can flow, and is formed by the inner surface of the liquid flow pipe 21.
  • the liquid flow pipe 21 extends over the entire extension direction D of the degassing element 2. That is, the liquid flow pipe 21 extends from the end of the degassing element 2 in the first extension direction D1 to the end of the degassing element 2 in the second extension direction D2.
  • the hollow portion 21a of the liquid flow pipe 21 is open in the first extension direction D1 and the second extension direction D2.
  • the opening of the hollow portion 21a of the liquid flow pipe 21 on the first extension direction D1 side is referred to as the first end liquid flow pipe opening 21b
  • the opening of the hollow portion 21a of the liquid flow pipe 21 on the second extension direction D2 side is referred to as the second end liquid flow pipe opening 21c.
  • no member such as a baffle that prevents the movement of the liquid L in the extension direction D is provided in the hollow portion 21a of the liquid flow pipe 21.
  • the liquid flow pipe 21 has multiple openings 21d formed therein.
  • the multiple openings 21d are holes for allowing the liquid L to flow from the hollow portion 21a to the outside of the liquid flow pipe 21, separate from the first end liquid flow pipe opening 21b and the second end liquid flow pipe opening 21c.
  • the multiple openings 21d are holes for allowing the liquid L to flow from the hollow portion 21a to the outside of the liquid flow pipe 21 in the radial direction of the liquid flow pipe 21.
  • the multiple openings 21d are formed in the peripheral wall of the liquid flow pipe 21, and open the hollow portion 21a to the outside of the liquid flow pipe 21.
  • the multiple hollow fiber membranes 22 extend along the liquid flow pipe 21 and are arranged around the liquid flow pipe 21 so as to cover the multiple openings 21d. "The multiple hollow fiber membranes 22 extend along the liquid flow pipe 21" means that in the initial state (unused state) of the degassing element 2, the multiple hollow fiber membranes 22 extend along the extension direction D. The multiple hollow fiber membranes 22 form a membrane bundle that is approximately cylindrical overall.
  • the multiple hollow fiber membranes 22 are formed, for example, from a hollow fiber membrane fabric (not shown) woven in the shape of a bamboo blind.
  • the hollow fiber membrane fabric is a fabric made by weaving multiple hollow fiber membranes 22, which serve as weft threads, with warp threads (not shown).
  • the multiple hollow fiber membranes 22 are arranged in the shape of a bamboo blind.
  • the hollow fiber membrane fabric is then wrapped around the liquid distribution pipe 21 so that the multiple hollow fiber membranes 22 extend in the extension direction D and cover the multiple openings 21d.
  • the hollow portion 22a of the hollow fiber membrane 22 is a flow path (intra-membrane flow path) through which gas G can flow, and is formed by the inner surface of the hollow fiber membrane 22.
  • the multiple hollow fiber membranes 22 extend over the entire area in the extension direction D of the degassing element 2. In other words, the multiple hollow fiber membranes 22 extend from the end of the degassing element 2 in the first extension direction D1 to the end of the degassing element 2 in the second extension direction D2.
  • the hollow portions 22a of the multiple hollow fiber membranes 22 are open in the first extension direction D1 and the second extension direction D2. Note that the hollow portions 22a of the multiple hollow fiber membranes 22 refer to the hollow portions 22a of each of the multiple hollow fiber membranes 22.
  • first end hollow fiber membrane openings 22b The openings of the hollow portions 22a of the multiple hollow fiber membranes 22 on the side of the first extension direction D1 are referred to as first end hollow fiber membrane openings 22b, and the openings of the hollow portions 22a of the multiple hollow fiber membranes 22 on the side of the second extension direction D2 are referred to as second end hollow fiber membrane openings 22c.
  • the hollow fiber membrane 22 is a hollow fiber membrane that allows gas G to pass through but not liquid L.
  • the material, shape, and form of the hollow fiber membrane 22 are not particularly limited.
  • materials for the hollow fiber membrane 22 include polyolefin resins such as polypropylene, polyethylene, and polymethylpentene; silicone resins such as polydimethylsiloxane and its copolymers; and fluororesins such as PTFE and vinylidene fluoride.
  • Examples of the shape (sidewall shape) of the hollow fiber membrane 22 include porous membranes, microporous membranes, and homogeneous membranes (non-porous membranes) that do not have porosity.
  • Examples of the form of the hollow fiber membrane 22 include symmetric membranes (homogeneous membranes) in which the chemical or physical structure of the entire membrane is homogeneous, and asymmetric membranes (heterogeneous membranes) in which the chemical or physical structure of the membrane varies depending on the part of the membrane.
  • An asymmetric membrane is a membrane that has a non-porous dense layer and a porous layer. In this case, the dense layer may be formed anywhere within the membrane, such as on the surface or inside the porous membrane.
  • Heterogeneous membranes also include composite membranes with different chemical structures and multilayer membranes such as three-layer structures. Heterogeneous membranes using poly-4-methylpentene-1 resin are particularly preferred because they have a dense layer that blocks liquid L.
  • the outer diameter of the hollow fiber membrane 22 is not particularly limited. From the perspective of increasing the membrane area, the outer diameter of the hollow fiber membrane 22 can be, for example, 500 ⁇ m or less, preferably 350 ⁇ m or less, and more preferably 250 ⁇ m or less. On the other hand, from the perspective of suppressing breakage, the outer diameter of the hollow fiber membrane 22 can be, for example, 50 ⁇ m or more, preferably 150 ⁇ m or more, and more preferably 200 ⁇ m or more.
  • the first fixing portion 24 is located at the first element end portion 2a and fixes the plurality of hollow fiber membranes 22 to the liquid flow pipe 21 so as to seal the gap between the liquid flow pipe 21 and the plurality of hollow fiber membranes 22 and leave the hollow portions 22a of the plurality of hollow fiber membranes 22 open.
  • the first fixing portion 24 fixes the end of the plurality of hollow fiber membranes 22 on the first extension direction D1 side to the liquid flow pipe 21.
  • the first fixing portion 24 also seals the gap between the liquid flow pipe 21 and the plurality of hollow fiber membranes 22.
  • the first fixing portion 24 is not provided in the hollow portions 21a of the liquid flow pipe 21 or the hollow portions 22a of the plurality of hollow fiber membranes 22, leaving the hollow portions 21a of the liquid flow pipe 21 and the hollow portions 22a of the plurality of hollow fiber membranes 22 open.
  • the first fixing portion 24 is formed, for example, from resin.
  • the second fixing portion 25 is located at the second element end 2b and fixes the plurality of hollow fiber membranes 22 to the liquid flow pipe 21 so as to seal the gap between the liquid flow pipe 21 and the plurality of hollow fiber membranes 22 and leave the hollow portions 22a of the plurality of hollow fiber membranes 22 open.
  • the second fixing portion 25 fixes the ends of the plurality of hollow fiber membranes 22 on the second extension direction D2 side to the liquid flow pipe 21.
  • the second fixing portion 25 also seals the gap between the liquid flow pipe 21 and the plurality of hollow fiber membranes 22.
  • the second fixing portion 25 is not provided in the hollow portions 21a of the liquid flow pipe 21 or the hollow portions 22a of the plurality of hollow fiber membranes 22, leaving the hollow portions 21a of the liquid flow pipe 21 and the hollow portions 22a of the plurality of hollow fiber membranes 22 open.
  • the second fixing portion 25 is formed, for example, from resin.
  • the multiple hollow fiber membranes 22 are not covered by a member such as a housing, and are exposed to the outside of the degassing element 2 between the first fixing portion 24 and the second fixing portion 25.
  • the housing 3 accommodates multiple degassing elements 2 so that the multiple degassing elements 2 are arranged in the extension direction D.
  • two degassing elements 2 are accommodated in the housing 3.
  • the two degassing elements 2 are composed of a first degassing element 2 ⁇ and a second degassing element 2 ⁇ .
  • the first degassing element 2 ⁇ and the second degassing element 2 ⁇ are adjacent degassing elements 2 in the extension direction D.
  • the first degassing element 2 ⁇ is a first-side degassing element located on the first extension direction D1 side
  • the second degassing element 2 ⁇ is a second-side degassing element located on the second extension direction D2 side.
  • the first degassing element 2 ⁇ is also a first-end degassing element located at the end of the multiple degassing elements 2 in the first extension direction D1
  • the second degassing element 2 ⁇ is also a second-end degassing element located at the end of the multiple degassing elements 2 in the second extension direction D2.
  • the pipe connection portion 4 connects the liquid flow pipes 21 of adjacent degassing elements 2 among the multiple degassing elements 2.
  • the pipe connection portion 4 connects the liquid flow pipe 21 of the first degassing element 2 ⁇ to the liquid flow pipe 21 of the second degassing element 2 ⁇ .
  • the pipe connection portion 4 is fitted into the end portion 21e of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the second extension direction D2 side, thereby connecting to the liquid flow pipe 21 of the first degassing element 2 ⁇ .
  • the pipe connection portion 4 is also fitted into the end portion 21f of the liquid flow pipe 21 of the second degassing element 2 ⁇ on the first extension direction D1 side, thereby connecting to the liquid flow pipe 21 of the second degassing element 2 ⁇ .
  • the pipe connection portion 4 forms an intermediate liquid flow passage S1 inside, which communicates with the liquid flow pipe 21 of the first degassing element 2 ⁇ and the liquid flow pipe 21 of the second degassing element 2 ⁇ .
  • FIG. 6 is a schematic cross-sectional view showing a portion of the degassing module shown in FIG. 1.
  • FIG. 7 is a schematic cross-sectional view showing a portion of the degassing module shown in FIG. 1.
  • FIG. 8 is a schematic cross-sectional view showing a portion of the degassing module shown in FIG. 1.
  • FIG. 9 is a schematic cross-sectional view showing a portion of the degassing module shown in FIG. 1.
  • FIG. 10 is a schematic cross-sectional view showing a portion of the degassing module shown in FIG. 1. As shown in FIGS.
  • the housing 3 accommodates the first degassing element 2 ⁇ and the second degassing element 2 ⁇ so that a gap S2 is formed between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • This gap S2 is a space between the housing 3 and the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , through which liquid L can flow.
  • the housing 3 includes a plurality of cylindrical sections 31 that surround the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , a first lid section 32 that is connected to one end of the plurality of cylindrical sections 31, a second lid section 33 that is connected to the end of the plurality of cylindrical sections 31 opposite the first lid section 32, and a housing connection section 34 that connects the plurality of cylindrical sections 31.
  • the multiple cylindrical portions 31 are composed of a first cylindrical portion 31 ⁇ that surrounds the first degassing element 2 ⁇ and a second cylindrical portion 31 ⁇ that surrounds the second degassing element 2 ⁇ .
  • the first degassing element 2 ⁇ and the second degassing element 2 ⁇ are housed in the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ so that the extension direction D of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ is the extension direction of the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ , i.e., the opposing direction of the first cover portion 32 and the second cover portion 33.
  • the extension direction D of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ is the same as the extension direction of the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ , and therefore the extension direction of the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ is also referred to as the extension direction D.
  • the first cylindrical portion 31 ⁇ is arranged on the first extension direction D1 side of the second cylindrical portion 31 ⁇ , and the second cylindrical portion 31 ⁇ is arranged on the second extension direction D2 side of the first cylindrical portion 31 ⁇ .
  • the first lid portion 32 is connected to the end of the first cylindrical portion 31 ⁇ on the first extension direction D1 side so as to cover the opening of the first cylindrical portion 31 ⁇ on the first extension direction D1 side.
  • the second lid portion 33 is connected to the end of the second cylindrical portion 31 ⁇ on the second extension direction D2 side so as to cover the opening of the second cylindrical portion 31 ⁇ on the second extension direction D2 side.
  • the housing connection portion 34 connects the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ .
  • the housing connection portion 34 is connected to the end of the first cylindrical portion 31 ⁇ on the second extension direction D2 side and the end of the second cylindrical portion 31 ⁇ on the first extension direction D1 side.
  • the housing connection portion 34 may be formed integrally with either or both of the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ .
  • the baffle 5 blocks the end 21f of the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side. In other words, the baffle 5 blocks the hollow portion 21a at the end 21f of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side.
  • the baffle 5 is fitted into the end of the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side.
  • the baffle 5 may be formed integrally with the first lid portion 32.
  • the baffle 5 prevents the liquid L supplied to the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ from being discharged from the first degassing element 2 ⁇ in the first extension direction D1.
  • the baffle 5 is attached only to the first degassing element 2 ⁇ and does not block the hollow portion 22a of the liquid flow pipe 21 of the second degassing element 2 ⁇ .
  • the liquid L is not discharged from the first degassing element 2 ⁇ in the first extension direction D1, but is discharged radially outward from the liquid flow pipe 21 through the multiple openings 21d formed in the liquid flow pipe 21 in the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • no components that prevent the movement of the liquid L in the extension direction D are provided in the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , or in the intermediate liquid flow passage S1 described below.
  • the partition 7 divides the area within the housing 3 into an internal region R1 and an external region R2, with the multiple hollow fiber membranes 22 as boundaries.
  • the internal region R1 is an area that includes the hollow portions 22a of the multiple hollow fiber membranes 22.
  • the external region R2 is an area that includes the hollow portions 21a of the liquid flow pipes 21. Therefore, the hollow fiber membranes 22 form the boundary between the internal region R1 and the external region R2. In other words, the inside (hollow portions 22a) of the hollow fiber membranes 22 forms the internal region R1, and the outside of the hollow fiber membranes 22 forms the external region R2.
  • the multiple hollow fiber membranes 22 prevent the liquid L from passing from the external region R2 to the internal region R1, and allow the gas G (dissolved gas in the liquid L, air bubbles contained in the liquid L, etc.) to pass from the external region R2 to the internal region R1.
  • the hollow portion 21a of the liquid flow pipe 21 is connected to the outside of the liquid flow pipe 21 by multiple openings 21d formed in the liquid flow pipe 21, and therefore the external region R2 also includes the space S3 outside the liquid flow pipe 21 that is connected to the hollow portion 21a of the liquid flow pipe 21.
  • the space S3 outside the liquid flow pipe 21 that is connected to the hollow portion 21a of the liquid flow pipe 21 also includes the gaps S2 between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ and the housing 3.
  • the partition portion 7 has a first sealing portion 71 ⁇ , a second sealing portion 72 ⁇ , a third sealing portion 71 ⁇ , and a fourth sealing portion 72 ⁇ .
  • the first sealing portion 71 ⁇ seals between the first fixed portion 24 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ .
  • the second sealing portion 72 ⁇ seals between the second fixed portion 25 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ .
  • the third sealing portion 71 ⁇ seals between the first fixed portion 24 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ .
  • the fourth sealing portion 72 ⁇ seals between the second fixed portion 25 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ .
  • an intermediate communication space S4 is formed between the housing connection portion 34 and the pipe connection portion 4, which is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ and the hollow portions 22a of the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ .
  • the intermediate communication space S4 is a space formed between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • a first end communication space S5 is formed which is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ .
  • a second end communication space S6 is formed which is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ .
  • the intermediate communication space S4, the first end communication space S5, and the second end communication space S6 are connected to the hollow portions 22a of the multiple hollow fiber membranes 22, and are therefore also part of the internal region R1.
  • the intermediate communication space S4 is a space surrounded by the pipe connection portion 4, the second fixing portion 25 of the first degassing element 2 ⁇ , the first fixing portion 24 of the second degassing element 2 ⁇ , the second sealing portion 72 ⁇ , the third sealing portion 71 ⁇ , and the housing connection portion 34.
  • the intermediate communication space S4 is adjacent to the second element end portion 2b of the first degassing element 2 ⁇ in the second extension direction D2 and adjacent to the first element end portion 2a of the second degassing element 2 ⁇ in the first extension direction D1.
  • the intermediate communication space S4 is also adjacent to the second end hollow fiber membrane opening 22c of the first degassing element 2 ⁇ and the first end hollow fiber membrane opening 22b of the second degassing element 2 ⁇ .
  • the first end communication space S5 is a space surrounded by the first fixing portion 24, first sealing portion 71 ⁇ , and first lid portion 32 of the first degassing element 2 ⁇ .
  • the first end communication space S5 is also a space adjacent to the first element end portion 2a of the first degassing element 2 ⁇ on the side of the first extension direction D1.
  • the first end communication space S5 is also a space adjacent to the first end hollow fiber membrane opening 22b of the first degassing element 2 ⁇ .
  • the second end communication space S6 is a space surrounded by the second fixing portion 25, the fourth sealing portion 72 ⁇ , and the second lid portion 33 of the second degassing element 2 ⁇ .
  • the second end communication space S6 is also a space adjacent to the second element end portion 2b of the second degassing element 2 ⁇ on the second extension direction D2 side.
  • the second end communication space S6 is also a space adjacent to the second end hollow fiber membrane opening 22c of the second degassing element 2 ⁇ .
  • the space S3 outside the liquid flow pipe 21, which is connected to the hollow portion 21a of the liquid flow pipe 21, is divided into two spaces: a first outer space S3 ⁇ located between the first sealing portion 71 ⁇ and the second sealing portion 72 ⁇ , and a second outer space S3 ⁇ located between the third sealing portion 71 ⁇ and the fourth sealing portion 72 ⁇ . Therefore, the gap S2 between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ and the housing 3 is also divided into two gaps: a first gap S2 ⁇ between the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ , and a second gap S2 ⁇ between the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ .
  • the first outer space S3 ⁇ is a space surrounded by the liquid flow pipe 21, multiple hollow fiber membranes 22, first fixed portion 24, second fixed portion 25, first tubular portion 31 ⁇ , first sealing portion 71 ⁇ , and second sealing portion 72 ⁇ of the first degassing element 2 ⁇ . Furthermore, the first outer space S3 ⁇ is a space adjacent to the first fixed portion 24 and first sealing portion 71 ⁇ of the first degassing element 2 ⁇ on the second extension direction D2 side, and adjacent to the second fixed portion 25 and second sealing portion 72 ⁇ of the first degassing element 2 ⁇ on the first extension direction D1 side.
  • the second outer space S3 ⁇ is a space surrounded by the liquid flow pipe 21, multiple hollow fiber membranes 22, first fixing portion 24, second fixing portion 25, second tubular portion 31 ⁇ , third sealing portion 71 ⁇ , and fourth sealing portion 72 ⁇ of the second degassing element 2 ⁇ .
  • the second outer space S3 ⁇ is adjacent to the first fixing portion 24 and third sealing portion 71 ⁇ of the second degassing element 2 ⁇ on the second extension direction D2 side, and adjacent to the second fixing portion 25 and fourth sealing portion 72 ⁇ of the second degassing element 2 ⁇ on the first extension direction D1 side.
  • first sealing portion 71 ⁇ seals the gap between the first fixing portion 24 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ , thereby fixing the first fixing portion 24 of the first degassing element 2 ⁇ to the first cylindrical portion 31 ⁇ .
  • the second sealing portion 72 ⁇ seals the gap between the second fixing portion 25 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ , thereby fixing the second fixing portion 25 of the first degassing element 2 ⁇ to the first cylindrical portion 31 ⁇ .
  • the third sealing portion 71 ⁇ seals the gap between the first fixing portion 24 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ , thereby fixing the first fixing portion 24 of the second degassing element 2 ⁇ to the second cylindrical portion 31 ⁇ .
  • the fourth sealing portion 72 ⁇ seals the gap between the second fixing portion 25 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ , thereby fixing the second fixing portion 25 of the second degassing element 2 ⁇ to the second cylindrical portion 31 ⁇ .
  • the first sealing portion 71 ⁇ , the second sealing portion 72 ⁇ , the third sealing portion 71 ⁇ , and the fourth sealing portion 72 ⁇ are formed, for example, from resin.
  • the housing 3 has a liquid supply port 35 for supplying liquid L to the hollow portion 21a of the liquid flow pipe 21, multiple liquid discharge ports 36 for discharging liquid L from the liquid flow pipe 21, and an intermediate gas port 37, a first end gas port 38, and a second end gas port 39, which are gas ports for discharging gas that has permeated the multiple hollow fiber membranes 22.
  • the intermediate gas port 37, first end gas port 38, and second end gas port 39 are also referred to as vacuum ports, etc.
  • the liquid supply port 35, multiple liquid discharge ports 36, intermediate gas port 37, first end gas port 38, and second end gas port 39 may be configured integrally with the housing 3 or may be separate components from the housing 3.
  • the liquid supply port 35 is provided in the second lid portion 33 and is a port that communicates between the inside and outside of the housing 3.
  • the liquid supply port 35 extends in a pipe-like manner from the second lid portion 33 to the inside of the housing 3 and is connected to the end 21e of the liquid flow pipe 21 of the second degassing element 2 ⁇ on the second extension direction D2 side.
  • the liquid supply port 35 is also connected to the hollow portion 21a of the liquid flow pipe 21 of the second degassing element 2 ⁇ .
  • the multiple liquid discharge ports 36 are composed of two liquid discharge ports 36: a first liquid discharge port 36 ⁇ and a second liquid discharge port 36 ⁇ .
  • the first liquid discharge port 36 ⁇ is provided in the first cylindrical portion 31 ⁇ and is a port that connects the inside and outside of the housing 3.
  • the first liquid discharge port 36 ⁇ is adjacent to the first outer space S3 ⁇ and is connected to the first outer space S3 ⁇ .
  • the second liquid discharge port 36 ⁇ is provided in the second cylindrical portion 31 ⁇ and is a port that connects the inside and outside of the housing 3.
  • the second liquid discharge port 36 ⁇ is adjacent to the second outer space S3 ⁇ and is connected to the second outer space S3 ⁇ .
  • the intermediate gas port 37 is provided in the housing connection portion 34 and is a port that connects the inside and outside of the housing 3.
  • the intermediate gas port 37 is adjacent to the intermediate communication space S4 and is connected to the intermediate communication space S4.
  • the first-end gas port 38 is provided in the first lid portion 32 and is a port that connects the inside and outside of the housing 3.
  • the first-end gas port 38 is adjacent to the first-end communication space S5 and is connected to the first-end communication space S5.
  • the second-end gas port 39 is provided in the second lid portion 33 and is a port that connects the inside and outside of the housing 3.
  • the second-end gas port 39 is adjacent to the second-end communication space S6 and is connected to the second-end communication space S6.
  • the intermediate gas port 37, first end gas port 38, and second end gas port 39 of the degassing module 1 are suctioned, and liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • Suction of the intermediate gas port 37, first end gas port 38, and second end gas port 39 can be performed, for example, by connecting a suction device (not shown) such as a vacuum pump to the intermediate gas port 37, first end gas port 38, and second end gas port 39 via piping or the like and activating this suction device.
  • Liquid L can be supplied to the liquid supply port 35 by connecting a liquid supply device (not shown) such as a liquid feed pump that delivers liquid L via piping or the like to the liquid supply port 35 and activating this liquid supply device.
  • the internal region R1 connected to the intermediate gas port 37, the first end gas port 38, and the second end gas port 39 is suctioned, and the internal region R1 is placed in a decompressed state. Furthermore, when liquid L is supplied to the liquid supply port 35, the liquid L is supplied to the external region R2 connected to the liquid supply port 35. The liquid L supplied to the liquid supply port 35 is supplied to the hollow portions 21a of the liquid flow pipes 21 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • liquid L is then discharged from the multiple openings 21d of the liquid flow pipe 21 of the first degassing element 2 ⁇ into the first outer space S3 ⁇ , where it comes into contact with the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ .
  • the remaining liquid L is discharged from the multiple openings 21d of the liquid flow pipe 21 of the second degassing element 2 ⁇ into the second outer space S3 ⁇ and comes into contact with the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ .
  • the hollow portions 22a of the multiple hollow fiber membranes 22 in the first degassing element 2 ⁇ and the second degassing element 2 ⁇ are in a reduced pressure state, so that gas G, such as dissolved gas in the liquid L and bubbles contained in the liquid L, permeates the multiple hollow fiber membranes 22.
  • gas G such as dissolved gas in the liquid L and bubbles contained in the liquid L
  • the liquid L discharged and degassed into the first outer space S3 ⁇ passes through the first gap S2 ⁇ between the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ and is discharged from the first liquid discharge port 36 ⁇ .
  • the liquid L discharged and degassed into the second outer space S3 ⁇ passes through the second gap S2 ⁇ between the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ and is discharged from the second liquid discharge port 36 ⁇ .
  • the gas G that has permeated the plurality of hollow fiber membranes 22 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ passes through the hollow portions 22a, the intermediate communicating space S4, the first end communicating space S5, and the second end communicating space S6 of the plurality of hollow fiber membranes 22 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , and is discharged from the intermediate gas port 37, the first end gas port 38, and the second end gas port 39.
  • the gas G that has permeated the plurality of hollow fiber membranes 22 of the first degassing element 2 ⁇ passes through the hollow portions 22a, the intermediate communicating space S4, and the first end communicating space S5 of the plurality of hollow fiber membranes 22 of the first degassing element 2 ⁇ , and is discharged from the intermediate gas port 37 and the first end gas port 38.
  • Gas G that has permeated the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ passes through the hollow portions 22a of the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ , the intermediate communication space S4, and the second end communication space S6, and is discharged from the intermediate gas port 37 and the second end gas port 39.
  • the first degassing element 2 ⁇ and the second degassing element 2 ⁇ are arranged in the extension direction D, the liquid flow pipe 21 of the first degassing element 2 ⁇ and the liquid flow pipe 21 of the second degassing element 2 ⁇ are connected by the pipe connection part 4, and the partition part 7 divides the area within the housing 3, with the hollow fiber membranes 22 as the boundary, into an inner area R1 including the hollow portions 22a of the multiple hollow fiber membranes 22 and an outer area R2 including the hollow portions 21a of the liquid flow pipe 21.
  • the liquid L can be degassed in the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , making it possible to increase the flow rate of the liquid L to be degassed.
  • the housing 3 has a first cylindrical portion 31 ⁇ that surrounds the first degassing element 2 ⁇ , a second cylindrical portion 31 ⁇ that surrounds the second degassing element 2 ⁇ , a first liquid discharge port 36 ⁇ provided in the first cylindrical portion 31 ⁇ for discharging the liquid L that has left the liquid flow pipe 21, and a second liquid discharge port 36 ⁇ provided in the second cylindrical portion 31 ⁇ for discharging the liquid L that has left the liquid flow pipe 21.
  • the end 21f of the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side is blocked by the baffle 5, and a liquid supply port 35 is connected to the end 21e of the liquid flow pipe 21 of the second degassing element 2 ⁇ on the second extension direction D2 side. Therefore, when liquid L is supplied to the liquid supply port 35, the liquid L is supplied to the hollow portion 21a of the liquid flow pipe 21 in the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , exits the liquid flow pipe 21 through the multiple openings 21d, and comes into contact with the multiple hollow fiber membranes 22 to be degassed.
  • the liquid L that has come into contact with the multiple hollow fiber membranes 22 and been degassed is discharged from the first liquid discharge port 36 ⁇ and the second liquid discharge port 36 ⁇ without returning to the hollow portion 21a of the liquid flow pipe 21.
  • the liquid L does not flow in a direction that presses the hollow fiber membranes 22 against the liquid flow pipe 21, but rather in a direction that moves the hollow fiber membranes 22 away from the liquid flow pipe 21.
  • This makes it possible to suppress an increase in pressure loss when the liquid L passes through the hollow fiber membranes 22, and therefore to suppress a decrease in the flow rate of the liquid L.
  • a liquid supply device with a relatively low output can be used to supply liquid to the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • a first end communication space S5 that is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ is formed on the first extension direction D1 side of the first degassing element 2 ⁇ , and the first end gas port 38 is adjacent to the first end communication space S5 and connected to the first end communication space S5. Therefore, it is possible to suction the hollow portions 22a of the multiple hollow fiber membranes 22 or supply sweep gas to the hollow portions 22a of the multiple hollow fiber membranes 22 from the end of the first degassing element 2 ⁇ on the first extension direction D1 side. This further improves degassing efficiency.
  • a second end communication space S6 that is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ is formed on the second extension direction D2 side of the second degassing element 2 ⁇ , and the second end gas port 39 is adjacent to the second end communication space S6 and connected to the second end communication space S6. Therefore, it is possible to suction the hollow portions 22a of the multiple hollow fiber membranes 22 or supply sweep gas to the hollow portions 22a of the multiple hollow fiber membranes 22 from the end of the second degassing element 2 ⁇ on the second extension direction D2 side. This further improves degassing efficiency.
  • an intermediate communication space S4 is formed between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , which are adjacent in the extension direction D.
  • the intermediate communication space S4 is connected to the hollow portions 22a of the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ and the hollow portions 22a of the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ .
  • the intermediate gas port 37 is adjacent to the intermediate communication space S4 and is connected to the intermediate communication space S4. This makes it possible to suction the hollow portions 22a of the multiple hollow fiber membranes 22 or supply sweep gas to the hollow portions 22a of the multiple hollow fiber membranes 22 from between the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • the multiple cylindrical portions 31 include a first cylindrical portion 31 ⁇ that surrounds the periphery of the first degassing element 1 ⁇ and a second cylindrical portion 31 ⁇ that surrounds the periphery of the second degassing element 1 ⁇
  • the housing 3 has a housing connection portion 34 that connects the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇
  • an intermediate communication space S4 is formed between the housing connection portion 34 and the pipe connection portion 4. Therefore, the intermediate communication space S4 can be formed between the first degassing element 1 ⁇ and the second degassing element 1 ⁇ with a simple configuration.
  • the external region R2 has a first outer space S3 ⁇ located between the first sealing portion 71 ⁇ and the second sealing portion 72 ⁇ , and a second outer space S3 ⁇ located between the third sealing portion 71 ⁇ and the fourth sealing portion 72 ⁇ , with the first liquid discharge port 36 ⁇ adjacent to the first outer space S3 ⁇ and connected to the first outer space S3 ⁇ , and the second liquid discharge port 36 ⁇ adjacent to the second outer space S3 ⁇ and connected to the second outer space S3 ⁇ .
  • the liquid L discharged from the multiple openings 21d of the liquid flow pipe 21 of the first degassing element 2 ⁇ into the first outer space S3 ⁇ does not flow into the second outer space S3 ⁇ , but instead comes into contact with the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ and is degassed, and then passes through the first gap S2 ⁇ between the first degassing element 2 ⁇ and the first tubular portion 31 ⁇ and is discharged from the first liquid discharge port 36 ⁇ .
  • the liquid L discharged from the multiple openings 21d of the liquid flow pipe 21 of the second degassing element 2 ⁇ into the second outer space S3 ⁇ does not flow into the first outer space S3 ⁇ , but instead comes into contact with the multiple hollow fiber membranes 22 of the second degassing element 2 ⁇ and is degassed, and then passes through the second gap S2 ⁇ between the second degassing element 2 ⁇ and the second tubular portion 31 ⁇ and is discharged from the second liquid discharge port 36 ⁇ .
  • the hollow portions 21a and intermediate liquid flow passages S1 of the liquid flow pipes 21 of the first degassing element 2 ⁇ and second degassing element 2 ⁇ are not provided with any members other than the baffles 5 to prevent the movement of the liquid L in the extension direction D.
  • the liquid L that leaves the liquid flow pipes 21 of the first degassing element 2 ⁇ and second degassing element 2 ⁇ is discharged from the first liquid discharge port 36 ⁇ and second liquid discharge port 36 ⁇ without returning to the first degassing element 2 ⁇ and second degassing element 2 ⁇ .
  • this degassing module 1 other than the baffle 5 that blocks the end 21f of the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side, no member that blocks the movement of the liquid L in the extension direction D is provided in the hollow portion 21a and intermediate liquid flow passage S1 of the liquid flow pipe 21 of the first degassing element 2 ⁇ and the second degassing element 2 ⁇ .
  • the liquid L that leaves the liquid flow pipe 21 is discharged from the first liquid discharge port 36 ⁇ and the second liquid discharge port 36 ⁇ without returning to the liquid flow pipe 21.
  • the liquid pressure loss is reduced and the liquid flow rate is improved, making it possible to use a liquid supply device with a relatively low output.
  • liquid degassing method of this embodiment when the intermediate gas port 37, first end gas port 38, and second end gas port 39 are suctioned and liquid L is supplied to the liquid supply port 35 in the degassing module 1, the liquid L is degassed in the first degassing element 2 ⁇ and the second degassing element 2 ⁇ , making it possible to degas a large flow rate of the liquid L.
  • the housing 3 has a first cylindrical portion 31 ⁇ surrounding the first degassing element 2 ⁇ , a second cylindrical portion 31 ⁇ surrounding the second degassing element 2 ⁇ , a first liquid discharge port 36 ⁇ provided in the first cylindrical portion 31 ⁇ for discharging the liquid L exiting the liquid flow pipe 21, and a second liquid discharge port 36 ⁇ provided in the second cylindrical portion 31 ⁇ for discharging the liquid L exiting the liquid flow pipe 21.
  • the carbon dioxide concentration in the seawater can be reduced, thereby reducing the carbon dioxide concentration in the atmosphere.
  • three gas ports were described as being provided as gas ports for discharging gas G that has permeated the multiple hollow fiber membranes 22: an intermediate gas port 37 adjacent to the intermediate communication space S4 and connected to the intermediate communication space S4, a first end gas port 38 adjacent to the first end communication space S5 and connected to the first end communication space S5, and a second end gas port 39 adjacent to the second end communication space S6 and connected to the second end communication space S6.
  • the other gas ports do not necessarily have to be provided.
  • FIG 11 is a schematic cross-sectional view of another example of a degassing module.
  • the degassing module 1A shown in Figure 11 is equipped with gas ports for discharging gas G that has permeated the multiple hollow fiber membranes 22: a first end gas port 38 adjacent to the first end communication space S5 and connected to the first end communication space S5, and a second end gas port 39 adjacent to the second end communication space S6 and connected to the second end communication space S6.
  • the housing connection portion 34A of the housing 3A which corresponds to the housing connection portion 34 of the housing 3, does not have an intermediate gas port adjacent to the intermediate communication space S4 and connected to the intermediate communication space S4.
  • the degassing module has been described as having two degassing elements, but the degassing module may also have three or more degassing elements. If the degassing module has three or more degassing elements, each cylindrical portion surrounding each degassing element of the housing may be provided with a liquid discharge port for discharging liquid that has come out of the liquid distribution pipe.
  • Figure 12 is a schematic cross-sectional view of another example of a degassing module.
  • the degassing module 1B shown in Figure 12 three degassing elements 2 are housed in a housing 3B corresponding to the housing 3.
  • the three degassing elements 2 are composed of a first degassing element 2 ⁇ , a second degassing element 2 ⁇ , and a third degassing element 2 ⁇ .
  • the first degassing element 2 ⁇ and the second degassing element 2 ⁇ are adjacent degassing elements 2 in the extension direction D.
  • the first degassing element 2 ⁇ is a first-side degassing element located on the first extension direction D1 side of the second degassing element 2 ⁇
  • the second degassing element 2 ⁇ is a second-side degassing element located on the second extension direction D2 side of the first degassing element 2 ⁇ .
  • the second degassing element 2 ⁇ and the third degassing element 2 ⁇ are degassing elements 2 adjacent to each other in the extension direction D.
  • the second degassing element 2 ⁇ is a first-side degassing element located on the first extension direction D1 side of the third degassing element 2 ⁇
  • the third degassing element 2 ⁇ is a second-side degassing element located on the second extension direction D2 side of the second degassing element 2 ⁇ .
  • first degassing element 2 ⁇ is also the first end degassing element located at the end of the multiple degassing elements 2 in the first extension direction D1
  • third degassing element 2 ⁇ is also the second end degassing element located at the end of the multiple degassing elements 2 in the second extension direction D2.
  • the liquid flow pipe 21 of the first degassing element 2 ⁇ and the liquid flow pipe 21 of the second degassing element 2 ⁇ are connected by a pipe connection 4, and the liquid flow pipe 21 of the second degassing element 2 ⁇ and the liquid flow pipe 21 of the third degassing element 2 ⁇ are also connected by a pipe connection 4.
  • the pipe connection 4 connecting the liquid flow pipe 21 of the first degassing element 2 ⁇ and the liquid flow pipe 21 of the second degassing element 2 ⁇ is referred to as the first pipe connection 4 ⁇ .
  • the pipe connection 4 connecting the liquid flow pipe 21 of the second degassing element 2 ⁇ and the liquid flow pipe 21 of the third degassing element 2 ⁇ is referred to as the second pipe connection 4 ⁇ .
  • the first pipe connection 4 ⁇ and the second pipe connection 4 ⁇ each form an intermediate liquid flow passage S1.
  • the housing 3B accommodates the first degassing element 2 ⁇ , the second degassing element 2 ⁇ , and the third degassing element 2 ⁇ so that the first degassing element 2 ⁇ , the second degassing element 2 ⁇ , and the third degassing element 2 ⁇ are arranged in the extension direction D and a gap S2 is formed between the first degassing element 2 ⁇ , the second degassing element 2 ⁇ , and the third degassing element 2 ⁇ and the housing 3B.
  • the housing 3B comprises a first cylindrical portion 31 ⁇ that surrounds the first degassing element 2 ⁇ , a second cylindrical portion 31 ⁇ that surrounds the second degassing element 2 ⁇ , a third cylindrical portion 31 ⁇ that covers the third degassing element 2 ⁇ , a first lid portion 32 connected to the end of the first cylindrical portion 31 ⁇ on the first extension direction D1 side, a second lid portion 33 connected to the end of the third cylindrical portion 31 ⁇ on the second extension direction D2 side, a first housing connection portion 34 ⁇ that connects the first cylindrical portion 31 ⁇ and the second cylindrical portion 31 ⁇ , and a second housing connection portion 34 ⁇ that connects the second cylindrical portion 31 ⁇ and the third cylindrical portion 31 ⁇ .
  • the baffle 5 blocks the end 21f of the hollow portion 21a of the liquid flow pipe 21 of the first degassing element 2 ⁇ on the first extension direction D1 side.
  • the baffle 5 is attached only to the first degassing element 2 ⁇ and does not block the hollow portion 22a of the liquid flow pipe 21 of the second degassing element 2 ⁇ or the third degassing element 2 ⁇ .
  • no members that block the movement of the liquid L in the extension direction D are provided in the hollow portion 21a of the liquid flow pipe 21 or each intermediate liquid flow passage S1 of the first degassing element 2 ⁇ , second degassing element 2 ⁇ , and third degassing element 2 ⁇ .
  • the partition portion 7 has a first sealing portion 71 ⁇ , a second sealing portion 72 ⁇ , a third sealing portion 71 ⁇ , a fourth sealing portion 72 ⁇ , a fifth sealing portion 71 ⁇ , and a sixth sealing portion 72 ⁇ .
  • the first sealing portion 71 ⁇ seals between the first fixed portion 24 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ .
  • the second sealing portion 72 ⁇ seals between the second fixed portion 25 of the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ .
  • the third sealing portion 71 ⁇ seals between the first fixed portion 24 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ .
  • the fourth sealing portion 72 ⁇ seals between the second fixed portion 25 of the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ .
  • the fifth sealing portion 71 ⁇ seals between the first fixed portion 24 of the third degassing element 2 ⁇ and the third cylindrical portion 31 ⁇ .
  • the sixth sealing portion 72 ⁇ seals the gap between the second fixing portion 25 of the third degassing element 2 ⁇ and the third cylindrical portion 31 ⁇ .
  • an intermediate communication space S4 is formed between the first housing connection portion 34 ⁇ and the first pipe connection portion 4 ⁇ , and between the second housing connection portion 34 ⁇ and the second pipe connection portion 4 ⁇ . Furthermore, a first end communication space S5 is formed on the first extension direction D1 side of the first degassing element 2 ⁇ . Furthermore, a second end communication space S6 is formed on the second extension direction D2 side of the third degassing element 2 ⁇ .
  • the space S3 outside the liquid flow pipe 21, which is connected to the hollow portion 21a of the liquid flow pipe 21, is divided into three spaces: a first outer space S3 ⁇ located between the first sealing portion 71 ⁇ and the second sealing portion 72 ⁇ ; a second outer space S3 ⁇ located between the third sealing portion 71 ⁇ and the fourth sealing portion 72 ⁇ ; and a third outer space S3 ⁇ located between the fifth sealing portion 71 ⁇ and the sixth sealing portion 72 ⁇ .
  • the gaps S2 between the first degassing element 2 ⁇ , the second degassing element 2 ⁇ , and the third degassing element 2 ⁇ and the housing 3B are also divided into three gaps: a first gap S2 ⁇ between the first degassing element 2 ⁇ and the first cylindrical portion 31 ⁇ ; a second gap S2 ⁇ between the second degassing element 2 ⁇ and the second cylindrical portion 31 ⁇ ; and a third gap S2 ⁇ between the third degassing element 2 ⁇ and the third cylindrical portion 31 ⁇ .
  • the housing 3 has a liquid supply port 35, three liquid discharge ports 36, two intermediate gas ports 37, a first end gas port 38, and a second end gas port 39.
  • the liquid supply port 35 extends in a pipe-like manner from the second lid portion 33 to the inside of the housing 3 and is connected to the end portion 21e of the liquid flow pipe 21 of the third degassing element 2 ⁇ on the second extension direction D2 side.
  • the liquid supply port 35 is also connected to the hollow portion 21a of the liquid flow pipe 21 of the third degassing element 2 ⁇ .
  • the three liquid discharge ports 36 are composed of a first liquid discharge port 36 ⁇ provided in the first cylindrical portion 31 ⁇ , a second liquid discharge port 36 ⁇ provided in the second cylindrical portion 31 ⁇ , and a third liquid discharge port 36 ⁇ provided in the third cylindrical portion 31 ⁇ .
  • the first liquid discharge port 36 ⁇ is adjacent to the first outer space S3 ⁇ and is connected to the first outer space S3 ⁇ .
  • the second liquid discharge port 36 ⁇ is adjacent to the second outer space S3 ⁇ and is connected to the second outer space S3 ⁇ .
  • the third liquid discharge port 36 ⁇ is adjacent to the third outer space S3 ⁇ and is connected to the third outer space S3 ⁇ .
  • the two intermediate gas ports 37 are composed of a first intermediate gas port 37 ⁇ provided in the first housing connection portion 34 ⁇ and a second intermediate gas port 37 ⁇ provided in the second housing connection portion 34 ⁇ .
  • the first intermediate gas port 37 ⁇ and the second intermediate gas port 37 ⁇ are adjacent to the intermediate communication space S4 and are connected to the intermediate communication space S4.
  • the first end gas port 38 is provided in the first lid portion 32.
  • the first end gas port 38 is adjacent to the first end communication space S5 and is connected to the first end communication space S5.
  • the second end gas port 39 is provided in the second lid portion 33.
  • the second end gas port 39 is adjacent to the second end communication space S6 and is connected to the second end communication space S6.
  • the first intermediate gas port 37 ⁇ , second intermediate gas port 37 ⁇ , first end gas port 38, and second end gas port 39 of degassing module 1B are suctioned, and liquid L is supplied to the liquid supply port 35 of degassing module 1B.
  • the liquid L supplied to the liquid supply port 35 is degassed in the first degassing element 2 ⁇ , second degassing element 2 ⁇ , and third degassing element 2 ⁇ , and discharged from the first liquid discharge port 36 ⁇ , second liquid discharge port 36 ⁇ , and third liquid discharge port 36 ⁇ .
  • Gas G that has permeated the multiple hollow fiber membranes 22 in the first degassing element 2 ⁇ , second degassing element 2 ⁇ , and third degassing element 2 ⁇ passes through the hollow portions 22a of the multiple hollow fiber membranes 22 of the first degassing element 2 ⁇ , second degassing element 2 ⁇ , and third degassing element 2 ⁇ , each intermediate communication space S4, first end communication space S5, and second end communication space S6, and is discharged from the first intermediate gas port 37 ⁇ , second intermediate gas port 37 ⁇ , first end gas port 38, and second end gas port 39.
  • the housing 3 has a first cylindrical portion 31 ⁇ that surrounds the first degassing element 2 ⁇ , a second cylindrical portion 31 ⁇ that surrounds the second degassing element 2 ⁇ , a third cylindrical portion 31 ⁇ that covers the third degassing element 2 ⁇ , a first liquid discharge port 36 ⁇ provided in the first cylindrical portion 31 ⁇ , a second liquid discharge port 36 ⁇ provided in the second cylindrical portion 31 ⁇ , and a third liquid discharge port 36 ⁇ provided in the third cylindrical portion 31 ⁇ .
  • the liquid L is degassed in vacuum mode, but the liquid L may also be degassed in sweep mode, or in a combo mode that combines sweep mode and vacuum mode.
  • FIGS 13 and 14 are schematic cross-sectional views of a degassing module to explain another example of a method for degassing a liquid.
  • a sweep gas SG is supplied to at least one of the intermediate gas port 37, first end gas port 38, and second end gas port 39 of the degassing module 1, and liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • an inert gas such as air (dry air), nitrogen gas, or argon gas is used. This makes it possible to increase the flow rate of the liquid L to be degassed while preventing the device from becoming too large, as in the above embodiment. Note that in Figures 13 and 14, only the housing 3 is shown in cross section.
  • sweep gas SG is not supplied to the first end gas port 38 and the second end gas port 39, but sweep gas GS is supplied to the intermediate gas port 37, and liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • the method shown in Figure 13 can be performed in either sweep mode or combination mode.
  • the middle gas port 37 serves as an air supply port
  • the first end gas port 38 and the second end gas port 39 serve as exhaust ports open to atmospheric pressure.
  • a sweep gas GS is supplied to the middle gas port 37
  • liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • the sweep gas SG can be supplied to the middle gas port 37, for example, by connecting a gas supply device (not shown) such as a gas cylinder and regulator to the middle gas port 37 via piping or the like and activating this gas supply device.
  • the gas G that has permeated the multiple hollow fiber membranes 22 is then scavenged (swept) by the sweep gas SG supplied to the middle gas port 37 and discharged (opened to the atmosphere) from the first end gas port 38 and the second end gas port 39.
  • the middle gas port 37 serves as an air supply port
  • the first and second end gas ports 38 and 39 serve as suction ports.
  • a sweep gas GS is supplied to the middle gas port 37
  • the first and second end gas ports 38 and 39 are suctioned
  • liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • the suction of the first and second end gas ports 38 and 39 can be performed, for example, in the same manner as in the above embodiment.
  • the gas G that has permeated the multiple hollow fiber membranes 22 is then swept by the sweep gas SG supplied to the middle gas port 37, sucked into the first and second end gas ports 38 and 39, and discharged from the first and second end gas ports 38 and 39. This improves the discharge efficiency of the gas G that has permeated the multiple hollow fiber membranes 22.
  • sweep gas SG is not supplied to the intermediate gas port 37, but sweep gas GS is supplied to the first end gas port 38 and the second end gas port 39, and liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • the method shown in Figure 14 can be performed in either sweep mode or combination mode.
  • the first end gas port 38 and the second end gas port 39 serve as supply ports
  • the middle gas port 37 serves as an exhaust port open to atmospheric pressure.
  • a sweep gas GS is supplied to the first end gas port 38 and the second end gas port 39
  • liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • the supply of the sweep gas SG to the first end gas port 38 and the second end gas port 39 can be achieved, for example, by connecting a gas supply device (not shown) to the first end gas port 38 and the second end gas port 39 via piping or the like and activating this gas supply device.
  • the gas G that has permeated the multiple hollow fiber membranes 22 is then scavenged (swept) by the sweep gas SG supplied to the first end gas port 38 and the second end gas port 39 and discharged (opened to the atmosphere) from the middle gas port 37.
  • the first end gas port 38 and the second end gas port 39 serve as gas supply ports
  • the middle gas port 37 serves as a suction port.
  • a sweep gas GS is supplied to the first end gas port 38 and the second end gas port 39, suction is applied to the middle gas port 37, and liquid L is supplied to the liquid supply port 35 of the degassing module 1.
  • Suction of the middle gas port 37 can be performed, for example, in the same manner as in the above embodiment. Then, gas G that has permeated the multiple hollow fiber membranes 22 is scavenged (swept) by the sweep gas SG supplied to the first end gas port 38 and the second end gas port 39, and is then sucked into and discharged from the middle gas port 37. This improves the discharge efficiency of gas G that has permeated the multiple hollow fiber membranes 22.
  • 1...degassing module 1A...degassing module, 1B...degassing module, 2...degassing element, 2a...first element end, 2b...second element end, 2 ⁇ ...first degassing element, 2 ⁇ ...second degassing element, 2 ⁇ ...third degassing element, 3...housing, 3A...housing, 3B...housing, 4...pipe connection part, 4 ⁇ ...first pipe connection part, 4 ⁇ ...second pipe connection part, 5...baffle, 7...partition part, 21...liquid flow pipe, 21a...middle Hollow portion, 21b...first end liquid circulation pipe opening, 21c...second end liquid circulation pipe opening, 21d...opening, 21e...end, 21f...end, 22...hollow fiber membrane, 22a...hollow portion, 22b...first end hollow fiber membrane opening, 22c...second end hollow fiber membrane opening, 24...first fixing portion, 25...second fixing portion, 31...cylindrical portion, 31 ⁇ ...first cylindrical portion, 31 ⁇ ...second cylindrical portion, 31 ⁇ ...

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
PCT/JP2024/045979 2024-01-23 2024-12-25 脱気モジュール及び液体の脱気方法 Pending WO2025158865A1 (ja)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014221477A (ja) * 2009-08-17 2014-11-27 セルガード エルエルシー 高圧液体脱気膜コンタクタならびに製造法および使用法
WO2020138096A1 (ja) * 2018-12-28 2020-07-02 Dic株式会社 脱気システム、液体の脱気方法、脱気ユニット、脱気モジュール、脱気システムの製造方法、及び天然資源の産生方法
JP2020171883A (ja) * 2019-04-10 2020-10-22 野村マイクロ・サイエンス株式会社 膜脱気装置の洗浄方法及び超純水製造システム

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Publication number Priority date Publication date Assignee Title
US7638049B2 (en) * 2004-03-30 2009-12-29 Celgard Inc. Three-port high performance mini hollow fiber membrane contactor
JP2006334507A (ja) * 2005-06-02 2006-12-14 Nitto Denko Corp スパイラル型分離膜エレメント
JP5628709B2 (ja) * 2011-02-28 2014-11-19 日東電工株式会社 分離膜モジュール
CN103506011A (zh) * 2012-06-19 2014-01-15 深圳市奥力原环境科技有限公司 中空纤维膜组件以及具有该中空纤维膜组件的水处理装置

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Publication number Priority date Publication date Assignee Title
JP2014221477A (ja) * 2009-08-17 2014-11-27 セルガード エルエルシー 高圧液体脱気膜コンタクタならびに製造法および使用法
WO2020138096A1 (ja) * 2018-12-28 2020-07-02 Dic株式会社 脱気システム、液体の脱気方法、脱気ユニット、脱気モジュール、脱気システムの製造方法、及び天然資源の産生方法
JP2020171883A (ja) * 2019-04-10 2020-10-22 野村マイクロ・サイエンス株式会社 膜脱気装置の洗浄方法及び超純水製造システム

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