JP2009072701A - Condensate remover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a condensate remover capable of removing condensate from a fluid mixture consisting of gas and the condensate by causing no loss of the gas contained in the fluid mixture. <P>SOLUTION: The condensate remover 1 for removing condensate from the fluid mixture consisting of gas and the condensate comprises a gas-liquid separator 10 (separating means) for separating the condensate from the fluid mixture and a hollow fiber membrane module 20 (discharge means) for discharging the condensate separated by the gas-liquid separator 10. The hollow fiber membrane 20 is provided with a hollow fiber membrane 21 having selective permeability, and the membrane 21 keeps its inner side (primary side) disposed in contact with the condensate and allows steam permeating the membrane to be discharged from the outer side (secondary side). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a condensed water remover that removes condensed water from a mixed fluid of gas and condensed water.

  As a device for separating and removing condensed water from a mixed fluid of gas and condensed water, a swirling flow of the mixed fluid is generated inside the cylindrical body, and the condensed water contained in the mixed fluid is formed into a cylinder by centrifugal separation using the swirling flow. There is known a gas-liquid separator, a so-called mist separator (drain separator), which adheres to the inner wall of the body, collects the condensed water into an auto drain provided at the bottom of the cylinder by gravity, and discharges the condensed water to the outside of the apparatus ( For example, see Patent Document 1).

However, in the gas-liquid separator, when the condensed water is discharged from the auto drain, part of the gas in the apparatus is also discharged. Therefore, the following problem arises.
(I) When the gas after separating and removing the condensed water is a product, the yield of the product is reduced.
(Ii) When the mixed fluid is compressed air flowing through the compressed air line, energy loss occurs due to loss of the compressed air.
(Iii) When the mixed fluid contains a gas that cannot be released into the atmosphere, such as a gas having flammability, the gas-liquid separation device cannot be used.
(Iv) When the gas-liquid separator is installed in a clean room, it is necessary to install a pipe through which the discharged condensed water flows so as not to contaminate the clean room with the condensed water.
Japanese Patent Laid-Open No. 11-19462

  The present invention provides a flocculated water remover that can remove flocculated water from a mixed fluid of gas and flocculated water without losing the gas contained in the mixed fluid.

The coagulated water remover of the present invention is a coagulated water remover that removes coagulated water from a mixed fluid of gas and coagulated water, separation means for separating the coagulated water from the mixed fluid, and coagulation separated by the separation means A discharge means for discharging water, and the discharge means is provided with a water vapor selective permeable membrane so that the primary side is in contact with the condensed water and the water vapor that has passed through the membrane is discharged from the secondary side. It is characterized by being.
The water vapor selective permeable membrane is a water vapor selective permeable hollow fiber membrane, the inside of the hollow fiber membrane is the primary side of the water vapor selective permeable membrane, and the outside of the hollow fiber membrane is the water vapor selective permeable membrane. The secondary side of the conductive film is preferable.

The water vapor selective permeable membrane is preferably a membrane made of a fluorine-based ion exchange resin having a unit based on tetrafluoroethylene and a repeating unit having an ion exchange group.
The repeating unit having an ion exchange group is preferably a unit based on perfluorovinyl ether having an ion exchange group.
The discharge means is a hollow fiber membrane module in which both ends of one or more water vapor selectively permeable hollow fiber membranes bent in a U shape are held by a potting material so as to keep the open state of the ends, or One end of one or more water vapor selectively permeable hollow fiber membranes is held by the first potting material so as to keep the open state of the end, and the other end closes the end. It is preferable that the hollow fiber membrane module is held by the second potting material.

The separation means is preferably a gas-liquid separation device that generates a swirling flow of the mixed fluid therein, adheres the condensed water contained in the mixed fluid to the inner wall by the swirling flow, and separates it.
The coagulated water remover of the present invention preferably further includes a purge gas supply means for supplying a purge gas to the secondary side of the water vapor selective permeable membrane.
The purge gas supply means is preferably a blower.
The purge gas supply means includes a water vapor selective permeable hollow fiber membrane in which a gas discharged from the separation means flows inside, and a portion of the gas after flowing through the hollow fiber membrane as a purge gas. And a purge gas supply channel for supplying the purge gas after flowing through the purge gas flow channel to the secondary side of the water vapor selective permeable membrane of the discharge means It may be.

  The condensed water remover of the present invention can remove condensed water from a mixed fluid of gas and condensed water without losing gas contained in the mixed fluid.

In this specification, the repeating unit represented by the formula (1) is referred to as a unit (1). The repeating unit means a unit derived from the monomer formed by polymerization of the monomer. The repeating unit may be a unit directly formed by a polymerization reaction, or may be a unit in which a part of the unit is converted into another structure by treating the copolymer.
Moreover, in this specification, the compound represented by Formula (2) is described as a compound (2). The same applies to compounds represented by other formulas.

<Coagulated water remover>
The coagulated water remover of the present invention is a coagulated water remover that removes coagulated water from a mixed fluid of gas and coagulated water, separation means for separating the coagulated water from the mixed fluid, and coagulation separated by the separation means A discharge means for discharging water, and the discharge means is provided with a water vapor selective permeable membrane so that the primary side is in contact with the condensed water and the water vapor that has passed through the membrane is discharged from the secondary side. It has been.

  The condensed water remover of the present invention preferably further includes a purge gas supply means for supplying a purge gas to the secondary side of the water vapor selective permeable membrane from the viewpoint of the removal efficiency of the condensed water.

(Water vapor selective permeable membrane)
The water vapor selective permeable membrane is a membrane that selectively permeates water vapor and hardly permeates other gases excluding water vapor.
Examples of the form of the water vapor selective permeable membrane include a porous membrane and a non-porous membrane.
Examples of the shape of the water vapor selective permeable membrane include a hollow fiber membrane, a flat membrane, a spiral type, a honeycomb type, a pleat type, etc., and a hollow fiber membrane is preferable from the viewpoint of easily increasing a water vapor permeation area per installed volume. .
The outer diameter of the hollow fiber membrane is preferably 0.3 to 20 mm, and more preferably 0.55 to 3 mm.
The inner diameter of the hollow fiber membrane is preferably 0.13 to 16 mm, and more preferably 0.4 to 2.6 mm.

  The material of the water vapor selective permeable membrane may be any material having water vapor permeability. Examples of the material of the water vapor selective permeable membrane include a fluorine resin, a polyimide resin, a polysulfone resin, a silicone resin, a polyolefin resin, a polyurethane resin, and the like. From the viewpoint of chemical resistance, a fluorine resin is preferable. .

As the fluorine resin, a fluorine ion exchange resin having a unit based on tetrafluoroethylene (hereinafter referred to as TFE) and a repeating unit having an ion exchange group is preferable from the viewpoint of water vapor selective permeability.
The ion-exchange group, a sulfonic acid group _(-SO ³ - ^M +), a carboxylic acid group (-COO ^- M ^+), and the like. However, M ⁺ is an alkali metal ion or a hydrogen ion.
The repeating unit having an ion exchange group is preferably a unit based on perfluorovinyl ether having an ion exchange group, and more preferably a repeating unit represented by the following formula (1).

However, X is fluorine atom or a trifluoromethyl group, -Fn ^- is -SO ₃ ^- or -COO ^- a and, ^{M +} is an alkali metal ion or hydrogen ion, m is 0 or 1, n Is an integer from 1 to 5

  A fluorine-based ion exchange resin is obtained by polymerizing a mixture of TFE and a monomer having a group that can be an ion exchange group to obtain a precursor, and then converting the group that can be an ion exchange group in the precursor to an ion exchange group. Can be obtained by converting to The conversion of a group that can be an ion exchange group into an ion exchange group is performed by hydrolysis treatment and, if necessary, acidification treatment.

Examples of the group that can be an ion exchange group include —SO ₂ F, —CN, —COF, —COOR, and the like. However, R is an alkyl group.
The monomer having a group that can be an ion exchange group is preferably a perfluorovinyl ether having a group that can be an ion exchange group, and more preferably the compound (2) or the compound (3).
_{CH 2 = CH- (OCF 2 CFX} ) m -O- (CF 2) n -SO 2 F ··· (2),
_{CH 2 = CH- (OCF 2 CFX} ) m -O- (CF 2) n -COOR ··· (3).
However, X is a fluorine atom or a trifluoromethyl group, R is an alkyl group, m is 0 or 1, and n is an integer of 1-5.

(Separation means)
The separation means is means for separating the condensed water from the mixed fluid.
Any separation means may be used as long as it can separate the condensed water from the mixed fluid. Examples of the separation means include the following means, and the gas-liquid separation device (i) is preferable from the viewpoint that aggregated water can be reliably removed from the mixed fluid.
(I) A gas-liquid separation device that generates a swirling flow of a mixed fluid inside and attaches and separates condensed water contained in the mixed fluid to an inner wall by centrifugal separation using the swirling flow.
(Ii) A retention part that temporarily retains the mixed fluid flowing through the flow path and drops the condensed water contained in the mixed fluid by gravity or the like while the mixed fluid is retained.

(Discharge means)
The discharging means is a means for discharging the condensed water separated by the separating means, and the water vapor permselective membrane is discharged from the secondary side so that the primary side is in contact with the condensed water, and the water vapor that has passed through the membrane is discharged. As is provided.
The discharge means selects the water vapor so that the primary side and the secondary side of the water vapor selective permeable membrane are airtight and liquid-tight (however, only water vapor can be transmitted through the water vapor selective permeable membrane). It is partitioned into two compartments by a permeable membrane.

As the discharging means, the hollow fiber membrane module of the following (i) or (ii) is preferable from the viewpoint of easily increasing the permeation area of water vapor per installed volume.
(I) A hollow fiber membrane module in which both ends of one or more water vapor selectively permeable hollow fiber membranes bent in a U shape are held by a potting material so as to keep the open state of the ends.
(Ii) One end of one or more water vapor selectively permeable hollow fiber membranes is held by the first potting material so as to keep the open state of the end, and the other end A hollow fiber membrane module held by a second potting material so as to be closed.
Further, the discharging means may be the following hollow fiber membrane module.
(Iii) One end of one or more water vapor selectively permeable hollow fiber membranes is held by the first potting material so as to keep the open state of the end, and the other end is at the open end A hollow fiber membrane module filled with an epoxy resin or the like and sealed with a free end (split state).

An example of the potting material is an epoxy resin.
The hollow fiber membrane module is preferably one in which both ends of the water vapor selective permeable hollow fiber membrane are held by a potting material and at the same time fixed to a protective case surrounding the hollow fiber membrane by a potting material.
In the hollow fiber membrane module, the inside of the water vapor selectively permeable hollow fiber membrane is the primary side from the viewpoint of easy removal of water vapor permeated through the water vapor selective permeable hollow fiber membrane and ease of supply of purge gas. It is preferable that the outer side of the water vapor selective permeable hollow fiber membrane is the secondary side.
The protective case is preferably formed with a plurality of vent holes through which purge gas passes.

(Purge gas supply means)
The purge gas supply means is means for supplying the purge gas to the secondary side of the water vapor selective permeable membrane.

The purge gas promotes the discharge of water vapor from the secondary side of the water vapor selective permeable membrane by excluding water vapor discharged from the secondary side of the water vapor selective permeable membrane from the surface of the water vapor selective permeable membrane. It is a gas.
As purge gas, air, dry air, nitrogen gas, used purge gas exhausted from a dehumidifying device (a membrane dryer, an adsorption dryer, etc.) provided at a later stage, a pneumatic actuator (air cylinder, etc.) Air discharged from the air.

As the purge gas supply means, a blower (such as a blower fan) is preferable.
The purge gas supply means is a means for branching a part of the gas blown from the existing blower to various devices, systems, etc. in which the condensed water remover of the present invention is arranged, so as to branch toward the condensed water remover of the present invention. There may be.

In addition, when the following dehumidifying device (membrane type dryer) is disposed after the condensed water removing device of the present invention and the used purge gas discharged from the dehumidifying device is reused, the dehumidifying device is purged gas. You may use as a supply means.
Dehumidifier:
A water vapor selective permeable hollow fiber membrane through which gas discharged from the separation means of the coagulated water remover of the present invention flows, and
A purge gas flow passage for flowing a part of the dry gas after flowing through the hollow fiber membrane as a purge gas to the outside of the hollow fiber membrane;
A dehumidifier having a purge gas supply channel for supplying the used purge gas after flowing through the purge gas flow channel to the secondary side of the water vapor selective permeable membrane of the discharge means of the condensed water remover of the present invention .

Hereinafter, embodiments of the condensed water remover of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a cross-sectional view showing a first embodiment of the coagulated water remover of the present invention. The coagulated water remover 1 has a gas-liquid separation device 10 (separation means) and a bottom portion of the gas-liquid separation device 10 so that the opening end of the water vapor selective permeable hollow fiber membrane 21 communicates with the gas-liquid separation device 10. And a blower fan 30 (purge gas supply means) provided on the side of the hollow fiber membrane module 20.

The gas-liquid separation device 10 includes a cylindrical tube body 11, a lid body 12 that seals an upper portion of the tube body 11, and a filter 13 that is coaxially disposed inside the tube body 11.
The lid body 12 is formed with a mixed fluid introduction flow path 14 for introducing a mixed gas from the outside into the cylinder 11 and a gas discharge flow path 15 for discharging the gas after separating the condensed water to the outside. ing.
The mixed fluid introduction flow path 14 is formed to bend toward the end so that the introduced high-pressure mixed gas collides with the inner wall of the cylinder 11, and the start end of the gas discharge flow path 15 is the outlet of the filter 13. Connect to.

The hollow fiber membrane module 20 includes a plurality of water vapor selective permeable hollow fiber membranes 21 bent in a U shape, a cylindrical protective case 22 surrounding the water vapor selective permeable hollow fiber membrane 21, and a water vapor selective permeable hollow fiber. A potting material 23 that holds the both ends of the membrane 21 so as to maintain the open state and fixes the water vapor selective permeable hollow fiber membrane 21 to the protective case 22 is provided.
The bottom of the protective case 22 is open, and a plurality of vent holes 24 are formed in the peripheral wall of the protective case 22.

Separation and removal of the condensed water from the mixed fluid by the condensed water removing device 1 are performed as follows.
The high-pressure mixed fluid containing gas and condensed water introduced from the mixed fluid introduction channel 14 of the lid 12 of the gas-liquid separator 10 is placed on the inner wall of the cylinder 11 facing the end of the mixed fluid introduction channel 14. By colliding, it becomes a swirl flow and descends in a spiral manner along the curved surface of the inner wall of the cylinder 11.

The condensed water contained in the mixed fluid adheres to the inner wall of the cylinder 11 by the centrifugal separation by the swirl flow.
The gas after the condensed water is separated passes through the filter 13 and is discharged to the outside through the gas discharge channel 15 of the lid 12.

The agglomerated water adhering to the inner wall of the cylindrical body 11 flows down to the hollow fiber membrane module 20 connected to the bottom of the cylindrical body 11 by gravity, and the water vapor selective permeable hollow fiber from the opening end of the water vapor selective permeable hollow fiber membrane 21. It is introduced inside the membrane 21 (primary side).
Since the inside of the water vapor selective permeable hollow fiber membrane 21 is high-pressure and high-humidity, and the outside (secondary side) of the water vapor selective-permeable hollow fiber membrane 21 is low-pressure and low-humidity, The condensed water introduced inside the water vapor selective permeable hollow fiber membrane 21 due to the water vapor partial pressure difference passes through the water vapor selective permeable hollow fiber membrane 21 as water vapor and is discharged to the outside.
At this time, by blowing air (purge gas) from the blower fan 30 to the outside of the water vapor selective permeable hollow fiber membrane 21, water vapor discharged from the outside of the water vapor selective permeable hollow fiber membrane 21 is forced from the surface. Since it is excluded, the discharge of water vapor from the outside of the water vapor selective permeable hollow fiber membrane 21 is promoted.

(Second Embodiment)
FIG. 2 is a cross-sectional view showing a second embodiment of the coagulated water remover of the present invention. The coagulated water remover 2 has a gas-liquid separation device 10 (separation means) and a bottom portion of the gas-liquid separation device 10 so that the opening end of the water vapor selective permeable hollow fiber membrane 21 communicates with the gas-liquid separation device 10. And a blower fan 30 (purge gas supply means) provided on the side of the hollow fiber membrane module 40.
Note that in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in FIG. 1 and description thereof is omitted.

  The hollow fiber membrane module 40 includes a plurality of water vapor selective permeable hollow fiber membranes 21, a cylindrical protective case 22 surrounding the water vapor selective permeable hollow fiber membrane 21, and one end of the water vapor selective permeable hollow fiber membrane 21. A first potting material 41 that holds the one end of the water vapor selective permeable hollow fiber membrane 21 to the protective case 22 and the other of the water vapor selective permeable hollow fiber membrane 21. And a second potting material 42 for holding the end portion closed and fixing the other end portion of the water vapor selective permeable hollow fiber membrane 21 to the protective case 22.

  Separation and removal of the coagulated water from the mixed fluid by the coagulated water remover 2 are performed in the same manner as in the case of the coagulated water remover 1 of the first embodiment.

(Third embodiment)
FIG. 3 is a cross-sectional view showing a third embodiment of the coagulated water remover of the present invention. The coagulated water remover 3 has a gas-liquid separation device 10 (separation means) and a bottom portion of the gas-liquid separation device 10 so that an open end of the water vapor selective permeable hollow fiber membrane 21 communicates with the gas-liquid separation device 10. And a blower fan 30 (purge gas supply means) provided on the side of the hollow fiber membrane module 50.

Note that in the third embodiment, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals as in FIGS. 1 and 2 and description thereof is omitted.
The hollow fiber membrane module 50 includes a plurality of water vapor selective permeable hollow fiber membranes 21, a first potting material 41 that holds an end state of one end of the water vapor selective permeable hollow fiber membrane 21, water vapor And a second potting material 42 that holds the other end of the selectively permeable hollow fiber membrane 21 so as to close it.

  Separation and removal of the coagulated water from the mixed fluid by the coagulated water remover 3 are performed in the same manner as in the case of the coagulated water remover 1 of the first embodiment.

(Fourth embodiment)
FIG. 4 is a cross-sectional view showing a fourth embodiment of the coagulated water remover of the present invention. The condensed water remover 4 includes a tubular mixed fluid channel 60 through which the mixed fluid flows, and a retention portion 70 that protrudes downward from the side wall of the mixed fluid channel 60 and temporarily retains the mixed fluid flowing through the mixed fluid channel 60. (Separation means), a hollow fiber membrane module 20 (discharge means) connected to the bottom of the staying portion 70 so that the open end of the water vapor selective permeable hollow fiber membrane 21 communicates with the staying portion 70, and a hollow fiber A blower fan 30 (purge gas supply means) provided on the side of the membrane module 20;

Note that in the fourth embodiment, identical symbols are assigned to the same configurations as in the first embodiment and descriptions thereof are omitted.
The upper part of the staying part 70 communicates with the mixed fluid flow path 60, and the inner wall of the staying part 70 has a tapered surface 71 whose diameter decreases downward.

Separation and removal of the condensed water from the mixed fluid by the condensed water remover 4 are performed as follows.
The mixed fluid containing the gas and the condensed water flowing gently through the mixed fluid flow path 60 is temporarily retained in the retention portion 70. While the mixed fluid stays in the staying portion 70, the condensed water contained in the mixed fluid drops due to gravity on the tapered surface 71 of the staying portion 70 and the hollow fiber membrane module 20.

The agglomerated water adhering to the tapered surface 71 of the staying part 70 flows down to the hollow fiber membrane module 20 connected to the bottom of the staying part 70 by gravity. The agglomerated water that has arrived at the hollow fiber membrane module 20 is introduced into the inside (primary side) of the water vapor selective permeable hollow fiber membrane 21 from the opening end of the water vapor selective permeable hollow fiber membrane 21.
Since the inside of the water vapor selective permeable hollow fiber membrane 21 is high-pressure and high-humidity, and the outside (secondary side) of the water vapor selective-permeable hollow fiber membrane 21 is low-pressure and low-humidity, The condensed water introduced inside the water vapor selective permeable hollow fiber membrane 21 due to the water vapor partial pressure difference passes through the water vapor selective permeable hollow fiber membrane 21 as water vapor and is discharged to the outside.
At this time, by blowing air (purge gas) from the blower fan 30 to the outside of the water vapor selective permeable hollow fiber membrane 21, water vapor discharged from the outside of the water vapor selective permeable hollow fiber membrane 21 is forced from the surface. Since it is excluded, the discharge of water vapor from the outside of the water vapor selective permeable hollow fiber membrane 21 is promoted.

(Fifth embodiment)
FIG. 5 is a cross-sectional view showing a fifth embodiment of the coagulated water remover of the present invention. The coagulated water remover 5 has a gas-liquid separation device 10 (separation means) and a bottom portion of the gas-liquid separation device 10 so that the opening end of the water vapor selective permeable hollow fiber membrane 21 communicates with the gas-liquid separation device 10. And a dehumidifier 80 (purge gas supply means) provided at the rear stage of the gas-liquid separator 10.
Note that in the fifth embodiment, identical symbols are assigned to the same configurations as in the first embodiment and descriptions thereof are omitted.

  The dehumidifier 80 includes a bottomed rectangular tube case 81, a hollow fiber membrane module 82 housed in a bent state in a U shape in the case 81, and a bellows provided so as to surround the hollow fiber membrane module 82. And the fixing member 84 which fixes the hollow fiber membrane module 82 and the boot 83 to the upper part of the case 81, and the cover body 85 which seals the upper opening of the case 81.

  The hollow fiber membrane module 82 is held by a first potting material 87 so that one end of a plurality of water vapor selectively permeable hollow fiber membranes 86 through which gas flows inside keeps the open state of the ends, The other end is held by the second potting material 88 so as to keep the open state of the end.

  The lid 85 has a gas introduction for introducing the gas discharged from the gas discharge channel 15 of the lid 12 of the gas-liquid separator 10 into the inside of the water vapor selective permeable hollow fiber membrane 86 of the hollow fiber membrane module 82. A flow path 89 and a dry gas discharge flow path 90 for discharging the dry gas after flowing through the water vapor selective permeable hollow fiber membrane 86 to the outside are formed.

In the dehumidifying apparatus 80, the gap between the hollow fiber membrane module 82 and the boot 83 is such that a part of the dry gas after flowing through the water vapor selective permeable hollow fiber membrane 86 is used as a purge gas. It becomes the purge gas circulation channel 91 that circulates outside.
In order to send a part of the dry gas after flowing through the water vapor selective permeable hollow fiber membrane 86 to the purge gas flow channel 91 as a purge gas, A dry gas branching channel 92 that communicates with the purge gas flow channel 91 is formed.
The fixing member 84 is formed with a purge gas discharge channel 93 that discharges the used purge gas after flowing through the purge gas flow channel 91 into the case 81 outside the boot 83.
In the side wall of the case 81, in order to supply the used purge gas in the case 81 to the outside of the water vapor selective permeable hollow fiber membrane 21 of the hollow fiber membrane module 20, the inside of the case 81 and the hollow fiber membrane module 20 Is provided with a purge gas supply flow path 94.

Separation and removal of the condensed water from the mixed fluid by the condensed water remover 5 are performed as follows.
The high-pressure mixed fluid containing gas and condensed water introduced from the mixed fluid introduction channel 14 of the lid 12 of the gas-liquid separator 10 is placed on the inner wall of the cylinder 11 facing the end of the mixed fluid introduction channel 14. By colliding, it becomes a swirl flow and descends in a spiral manner along the curved surface of the inner wall of the cylinder 11.

The condensed water contained in the mixed fluid adheres to the inner wall of the cylinder 11 by the centrifugal separation by the swirl flow.
The gas after the condensed water is separated passes through the filter 13 and is sent to the dehumidifying device 80 through the gas discharge channel 15 of the lid 12.

The agglomerated water adhering to the inner wall of the cylindrical body 11 flows down to the hollow fiber membrane module 20 connected to the bottom of the cylindrical body 11 by gravity, and the water vapor selective permeable hollow fiber from the opening end of the water vapor selective permeable hollow fiber membrane 21. It is introduced inside the membrane 21 (primary side).
Since the inside of the water vapor selective permeable hollow fiber membrane 21 is high-pressure and high-humidity, and the outside (secondary side) of the water vapor selective-permeable hollow fiber membrane 21 is low-pressure and low-humidity, The condensed water introduced inside the water vapor selective permeable hollow fiber membrane 21 due to the water vapor partial pressure difference passes through the water vapor selective permeable hollow fiber membrane 21 as water vapor and is discharged to the outside.

On the other hand, the gas sent to the dehumidifying device 80 is dehumidified by the dehumidifying device 80 and discharged from the dehumidifying device 80 as dry air. A part of the gas sent to the dehumidifying device 80 is discharged from the dehumidifying device 80 as a used purge gas.
That is, the gas flowing inside the water vapor selective permeable hollow fiber membrane 86 has high pressure and high humidity, and the purge gas flowing through the purge gas flow channel 91 outside the water vapor selective permeable hollow fiber membrane 86 has low pressure and low humidity. Therefore, due to the difference in water vapor partial pressure inside and outside the water vapor selective permeable hollow fiber membrane 86, only water vapor passes through the water vapor selective permeable hollow fiber membrane 86 from the gas inside the water vapor selective permeable hollow fiber membrane 86, and the purge gas flow It is discharged to the path 91.

  At this time, the used purge gas discharged from the dehumidifier 80 is blown to the outside of the water vapor selective permeable hollow fiber membrane 21 of the hollow fiber membrane module 20 to be discharged from the outside of the water vapor selective permeable hollow fiber membrane 21. Therefore, the discharge of water vapor from the outside of the water vapor selective permeable hollow fiber membrane 21 is promoted.

  The coagulated water remover of the present invention described above has a separating means for separating the coagulated water from the mixed fluid, and a discharging means for discharging the coagulated water separated by the separating means, and the discharging means. Since the water vapor selective permeable membrane is provided so that the primary side is in contact with the condensed water and the water vapor that has passed through the membrane is discharged from the secondary side, from the mixed fluid of the gas and the condensed water, Only the condensed water can be removed without losing the gas contained in the mixed fluid.

[Example 1]
Production of hollow fiber membrane module:
As shown in FIG. 6, non-porous water vapor selective permeable hollow fiber membrane 100 (manufactured by Asahi Glass Co., Ltd., trade name: Flemion, material: fluorine ion exchange resin, outer diameter: 1.0 mm, inner diameter: 0.78 mm) 20 were bundled, and both ends were inserted into ABS pipe joints 101 and potted with epoxy resin to produce a hollow fiber membrane module 102 (full length: 350 mm, effective length: 276 mm).

Measurement of moisture permeation:
One end of the hollow fiber membrane module 102 was connected to the syringe 103, and the opening at the other end was closed with an adhesive 104.
In a state where pure water is filled in the inside of the syringe 103 and the inside of the water vapor selective permeable hollow fiber membrane 100, air is blown to the outside of the water vapor selective permeable hollow fiber membrane 100 by the blower 105, and the water vapor selective permeable hollow fiber membrane is used. Water vapor was discharged from the outside of 100. The ambient atmosphere was a temperature of 26.7 ° C. and a relative humidity of 45%.
It was confirmed that 1 mL of pure water was discharged as water vapor in about 4 minutes and 13 seconds.

  The flocculated water remover of the present invention is useful as a device for separating and removing flocculated water from a mixed fluid of gas and flocculated water, a gas line in which the flocculated water is generated, a gas line containing the flocculated water even at normal pressure, It is useful for installation in gas lines containing gases that cannot be released into the atmosphere, such as flammable gases, gas lines with severe product gas yields, and clean gas lines in the medical, semiconductor, analytical, and research fields.

It is sectional drawing which shows 1st Embodiment of the condensed water remover of this invention. It is sectional drawing which shows 2nd Embodiment of the condensed water remover of this invention. It is sectional drawing which shows 3rd Embodiment of the condensed water remover of this invention. It is sectional drawing which shows 4th Embodiment of the condensed water remover of this invention. It is sectional drawing which shows 5th Embodiment of the condensed water remover of this invention. It is a figure which shows the condensed water remover for a test used in Example 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coagulated water removal device 2 Coagulated water removal device 3 Coagulated water removal device 4 Coagulated water removal device 5 Coagulated water removal device 10 Gas-liquid separation device (separation means)
20 Hollow fiber membrane module (discharge means)
21 Water vapor selective permeable hollow fiber membrane (water vapor selective permeable membrane)
30 Blower fan (purge gas supply means)
40 Hollow fiber membrane module (discharge means)
50 Hollow fiber membrane module (discharge means)
70 Retention part (separation means)
80 Dehumidifier (Purge gas supply means)
86 Water vapor selective permeable hollow fiber membrane 91 Purge gas flow channel 94 Purge gas supply flow channel 100 Water vapor selective permeable hollow fiber membrane (water vapor selective permeable membrane)
102 Hollow fiber membrane module (discharge means)
105 Blower (Purge gas supply means)

Claims (9)

A coagulated water remover that removes coagulated water from a mixed fluid of gas and coagulated water;
Separation means for separating the condensed water from the mixed fluid;
Discharging means for discharging the condensed water separated by the separation means,
A coagulated water remover, wherein the discharge means is provided with a water vapor selective permeable membrane so that the primary side is in contact with the coagulated water and the water vapor that has passed through the membrane is discharged from the secondary side. The water vapor selective permeable membrane is a water vapor selective permeable hollow fiber membrane,
The inside of the hollow fiber membrane is the primary side of the water vapor selective permeable membrane,
The coagulated water remover according to claim 1, wherein an outer side of the hollow fiber membrane is a secondary side of the water vapor selective permeable membrane.   The coagulated water remover according to claim 1 or 2, wherein the water vapor selective permeable membrane is a membrane made of a fluorine ion exchange resin having a unit based on tetrafluoroethylene and a repeating unit having an ion exchange group.   The condensed water remover according to claim 3, wherein the repeating unit having an ion exchange group is a unit based on perfluorovinyl ether having an ion exchange group.   A hollow fiber membrane module in which the discharge means is held by a potting material so that both ends of one or more water vapor selectively permeable hollow fiber membranes bent in a U-shape are kept open; or One end of one or more water vapor selectively permeable hollow fiber membranes is held by the first potting material so as to keep the open state of the end, and the other end closes the end. The coagulated water remover according to claim 2, which is a hollow fiber membrane module held by a second potting material.   6. The gas-liquid separation device according to claim 1, wherein the separation unit is a gas-liquid separation device that generates a swirling flow of a mixed fluid therein, adheres condensed water contained in the mixed fluid to the inner wall by the swirling flow, and separates the inner wall. A flocculated water remover according to claim 1.   Furthermore, the condensed water removal apparatus in any one of Claims 1-6 which has the purge gas supply means which supplies purge gas to the secondary side of a water vapor | steam selectively permeable membrane.   The condensed water remover according to claim 7, wherein the purge gas supply means is a blower. The purge gas supply means comprises:
A water vapor selective permeable hollow fiber membrane through which the gas discharged from the separation means circulates;
A purge gas flow passage for flowing a part of the gas after flowing through the hollow fiber membrane as a purge gas to the outside of the hollow fiber membrane;
The condensed water remover according to claim 7, further comprising: a purge gas supply channel that supplies the purge gas after flowing through the purge gas flow channel to the secondary side of the water vapor selective permeable membrane of the discharge unit.

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