JP2017124396A - Multitubular separation membrane module and liquid treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multitubular separation membrane module, capable of efficiently treating a treatment object liquid in a batch manner, and a liquid treatment method using this multitubular separation membrane module.SOLUTION: A multitubular separation membrane module 1 has a rectangular parallelepiped tank 2 with the top face opened, a separation membrane unit 3 mounted to be attachable to and detachable from the tank 2, and a gasification unit 4. The separation membrane unit 3 has a lid plate 5 placed over the top face of the tank 2, and a nozzle 7 projecting upward from one end side of the lid plate 5 in a longitudinal direction, a support plate 11 and a support block 10 suspended from the lid plate 5, and a tubular separation membrane 20 provided to bridge the support plate 11 and the support block 10. A liquid membrane production drum 12 is installed on the bottom part in the tank 2 and rotated by a motor unit 18.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a liquid processing method for separating a part of components from a solution, and a multitubular separation membrane module used in this method.

  A multi-tubular separation membrane module is known as an apparatus for separating components in a solution. The separation membrane element used in this multi-tubular separation membrane module is a tubular separation membrane made of zeolite or the like having fine pores about the size of the molecules to be separated. As a method for separating a specific component from a solution, the fluid or generated vapor of the solution is brought into contact with one (outer surface) of the separation membrane element, and the other (inner surface) is depressurized to vaporize or vaporize the specific component. A method for permeation and separation is known.

  In such a multitubular separation membrane module, in order to increase the separation efficiency, it is necessary to efficiently bring the solution to be separated or the generated vapor into contact with the entire length of the separation membrane element.

  Patent Document 1 describes a multi-tubular separation membrane module in which a plurality of separation membrane elements are horizontally installed in a cylindrical casing whose horizontal direction is the cylinder axis direction.

  Patent Document 2 illustrates a method in which a tubular zeolite membrane composite is immersed in a liquid to be separated so that the tube axis direction is in the vertical direction, the zeolite membrane composite is decompressed with a vacuum pump, and water is permeated and vaporized. Has been.

JP 2013-39546 A JP 2013-13884 A

  In Patent Document 1, as described in paragraph 0041, it is not described that a mixed steam of water and ethanol is continuously supplied into the casing and the liquid to be processed is processed in a batch manner.

  As in Patent Document 2, when the zeolite membrane composite is immersed in the liquid to be processed and the liquid to be processed is processed, the liquid to be processed can be processed batchwise. However, for example, when the liquid to be treated is brewed sake such as sake or wine, and the zeolite membrane used is hydrophobic, if the treatment is continued, various hydrophobic properties in the liquid to be treated The components are adsorbed on the zeolite membrane complex, and the separation operation cannot be continued efficiently.

  An object of the present invention is to provide a multitubular separation membrane module that can efficiently process a liquid to be treated in a batch manner, and a liquid processing method using the multitubular separation membrane module.

  The multi-tubular separation membrane module of the present invention comprises a tank body having an open port on the upper surface, a tubular separation membrane installed at the upper part of the tank body, and a vaporization unit disposed at the lower part of the tank body. It is characterized by having.

  The multi-tubular separation membrane module of one aspect of the present invention is a multi-tubular separation membrane module including a separation membrane unit provided in the tank body, and the separation membrane unit can be attached to and detached from the opening. A lid plate mounted; the tubular separation membrane supported by the lid plate; a suction port provided in the lid plate; and communication means for communicating the suction port and the inside of the tubular separation membrane. It is characterized by.

  In one aspect of the present invention, a support block is suspended from one end of the lower surface of the lid plate, a support plate is suspended from the other end of the lower surface of the lid plate, and one end side of the tubular separation membrane is It is fixed to the support block. As the communication means, a passage is provided in the support block. Further, the other end side of the tubular separation membrane is sealed and supported by the support plate. In this case, it is preferable that the tubular separation membrane is inserted into and supported by an opening provided in the support plate.

  In one aspect of the present invention, the vaporizing unit includes a liquid film generating drum having the axial direction as a horizontal direction. In this case, a first magnet is provided at the end of the shaft rod that supports the liquid film generating drum, the first magnet faces the inner surface of the side wall of the tank body, and the outer surface of the side wall of the tank body. Preferably, a second magnet is disposed facing the first magnet, and the second magnet can be rotated by a motor.

  The liquid processing method of the present invention uses such a multitubular separation membrane module of the present invention.

  The liquid treatment method includes a step of supplying a liquid to be treated into the tank body in an amount that the tubular separation membrane is not immersed, a step of vaporizing the liquid to be treated, and a pressure reduction in the tubular separation membrane from the liquid to be treated. A batch-type process comprising: a process for permeating only the target component vapor from the generated steam; and a process for discharging the liquid in the tank after the liquid level of the liquid to be processed in the tank is lowered to a predetermined level. It is suitable to apply to.

  In the multi-tubular separation membrane module of the present invention, the tubular separation membrane is installed in the upper part of the tank body, and the liquid to be treated contained in the lower part of the tank body is vaporized and separated by the tubular separation membrane. The membrane is not immersed in the liquid to be treated. For example, even when the liquid to be treated contains a hydrophobic component such as brewed liquor, and the zeolite membrane used is hydrophobic. The hydrophobic component is not adsorbed on the tubular separation membrane, and the separation treatment of the liquid to be treated can be performed stably. For this reason, according to this invention, the batch type process of a to-be-processed liquid can be performed efficiently.

  In one embodiment of the present invention, since the separation membrane unit is detachable from the tank body, the separation membrane unit and the tank body can be carefully cleaned by removing the separation membrane unit from the tank body.

  In one embodiment of the present invention, since the vaporization unit includes the liquid film generation drum, it is possible to promote the vaporization of the liquid to be processed in the tank by rotating the liquid film generation drum.

  By configuring the liquid film generating drum to rotate by a magnet coupling mechanism, it is not necessary to provide a shaft seal device for the liquid film generating drum in the tank body.

1 is a perspective view of a multitubular separation membrane module according to an embodiment. FIG. 2 is an exploded view of the multitubular separation membrane module of FIG. 1. It is a side view of the multi-tubular separation membrane module of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. FIG. 6 is an enlarged vertical sectional view taken along line VI-VI in FIG. 5. It is a longitudinal cross-sectional view which shows the structure of the front end side of a tubular separation membrane. It is a perspective view of the liquid film production | generation drum of a vaporization unit. It is a longitudinal cross-sectional view of the same location as FIG. 5 of the multi-tubular separation membrane module which concerns on another embodiment. It is a side view of the multi-tubular separation membrane module concerning an embodiment. It is a side view of the multi-tubular separation membrane module concerning an embodiment. It is the XII-XII sectional view taken on the line of FIG. It is a side view of the multi-tubular separation membrane module concerning an embodiment. It is the XIV-XIV sectional view taken on the line of FIG. It is a side view of the multi-tubular separation membrane module concerning an embodiment. It is a side view of the multi-tubular separation membrane module concerning an embodiment. It is a side view of a vaporization unit. It is a graph which shows the result of an Example.

  Hereinafter, embodiments will be described with reference to the drawings. 1 to 8 show a multitubular separation membrane module according to an embodiment.

  As shown in FIGS. 1 and 2, a multi-tubular separation membrane module 1 according to this embodiment includes a rectangular parallelepiped tank body 2 having an open top surface, and a separation membrane unit 3 detachably attached to the tank body 2. And a vaporization unit 4 disposed in the lower part of the tank body 2.

  In this embodiment, the tank body 2 is a deep type having a rectangular shape in plan view, and a drain valve 2a is provided in the vicinity of the lower end on one end side. The tank body 2 is made of electrolytically polished SUS, but is not limited thereto. Although illustration is omitted, a glass window for seeing through the inside of the tank body 2 is provided on the side surface of the tank body 2.

  The separation membrane unit 3 includes a cover plate 5 covering the upper surface of the tank body 2, grips 6 provided on the upper surfaces of both ends in the longitudinal direction of the cover plate 5, and upward from one end side of the cover plate 5 in the longitudinal direction. A protruding nozzle 7, three nozzles 8 a and 8 b for introducing and discharging a purge gas such as nitrogen, a liquid introducing nozzle 8 c, a temperature sensor (not shown) insertion port 9 such as a thermocouple, and the lower surface of the lid 5 The support plate 11 and the support block 10 that are provided so as to hang down, and a plurality of the support plate 11 and the support block 10 that are provided between the lower portions of the support plate 11 and the support block 10 (four rows in this embodiment). × 2 stages = 8) tubular separation membrane 20 and the like. The cover plate 5 is put on the tank body 2 through packing (not shown), and is fixed to the tank body 2 in an airtight and detachable manner by a buckle 5b. In addition, illustration of the buckle 5b is abbreviate | omitted in FIG.

  Although not shown, a decompression device such as a vacuum pump is connected to the nozzle 7 via a pressure-resistant hose and a cold trap. A nitrogen gas source (not shown) such as a nitrogen cylinder is connected to the nozzle 8a via a valve (not shown). A vacuum pump (not shown) for exhaust is connected to the nozzle 8b. A space between the temperature sensor inserted into the insertion port 9 and the insertion port 9 is hermetically sealed by a seal member (not shown).

  The support block 10 is located on one end side in the longitudinal direction of the lid plate 5, and the support plate 11 is located on the other end side in the longitudinal direction of the lid plate 5.

  The support block 10 has a thick plate shape extending in the short width direction of the tank body 2. As shown in FIGS. 5 and 6, the nozzle 7 projects upward from the upper surface. The nozzle 7 passes through the hole 5a of the cover plate 5 from the bottom to the top, and the nut 7a is tightened. Thereby, the nozzle 7 and the support block 10 are fixed to the cover plate 5. As shown in FIG. 5, the support block 10 includes a vertical hole 10 a that penetrates the nozzle 7, a horizontal hole 10 b that is continuous with the lower end of the vertical hole 10 a, and a plurality of holes that extend downward (this implementation). In this embodiment, four vertical holes 10c and a horizontal hole 10d that is continuous with the vertical holes 10c and opens toward the center in the longitudinal direction of the tank body 2 are formed.

  The horizontal holes 10d are provided in a plurality (two in each vertical hole 10c in this embodiment) at different vertical positions. A female screw 10e is engraved on the inner peripheral surface of the horizontal hole 10d. The proximal end side of the tubular separation membrane 20 is screwed to the female screw 10e.

  In this embodiment, the support block 10 is provided with a horizontal hole 10b and a vertical hole 10c. However, a single space 10k is provided as in the support block 10 'of FIG. 9, and the horizontal hole 10d is formed in the space 10k. You may provide so that it may communicate.

  In the embodiment shown in FIG. 1, the cover plate 5 and the support block 10 are integrated. However, the cover plate 5 and the support block may not be integrated, and the cover plate and the support block are separated from each other and can be detached from the tank body. There may be.

  6 and 7, the tubular separation membrane 20 includes a tubular porous support 21, a zeolite membrane 22 formed on the outer peripheral surface of the porous support 21, and a base end of the porous support 21. It has a boss piece 23 provided coaxially and an end piece 24 provided coaxially at the tip of the porous support 21.

  The boss piece 23 has a cylindrical shape, and communicates the inside of the tubular separation membrane 20 with the lateral hole 10d. The end piece 24 seals the tip of the tubular separation membrane 20. The boss piece 23 and the end piece 24 are connected to a porous support 21 with a zeolite membrane by heat shrink films 25 and 26.

  In the middle of the boss piece 23 in the longitudinal direction, a hexagonal flange 23a for tool engagement is provided. On the outer peripheral surface on the support block 10 side of the flange 23a, a male screw 23d that is screwed into the female screw 10e of the lateral hole 10d is engraved.

  An O-ring 27 is installed on the side surface of the flange 23a on the support block 10 side.

  When the boss piece 23 of the tubular separation membrane 20 is tightened into the horizontal hole 10d, the O-ring 27 is clamped between the flange 23a and the support block 10, thereby separating the inside of the tank body 2 from the inside of the horizontal hole 10d. Is done.

  The male screw 23d of the boss piece 23 may be a PT screw. In this case, the female screw of the corresponding horizontal hole 10d is also a PT screw, and a sealing tape is wound around the male screw 23d to form the horizontal hole 10d. Tighten to. In this case, the O-ring 27 may not be used.

  The end piece 24 of the tubular separation membrane 20 is inserted into and supported by the insertion hole 11 a of the support plate 11.

  As the material of the tubular porous support 21, an inorganic porous support of a ceramic sintered body containing silica, α-alumina, γ-alumina, mullite, zirconia, titania, yttria, silicon nitride, silicon carbide and the like. Can be mentioned.

  The zeolite membrane 22 is preferably formed by crystallizing zeolite on the surface of the porous support 21.

  The main zeolite constituting the zeolite membrane usually contains zeolite having an oxygen 6-12-membered ring structure, and preferably contains zeolite having an oxygen 6-10-membered ring structure.

  The zeolite membrane may be a single membrane of the zeolite, or the zeolite powder is dispersed in a binder such as a polymer to form a membrane, and the zeolite is fixed in a film form on various supports. A zeolite membrane composite may be used. The zeolite membrane may partially contain an amorphous component or the like.

  However, the present invention may use a tubular separation membrane having a separation membrane other than the zeolite membrane.

  The vaporizing unit 4 includes a cylindrical liquid film generating drum 12 made of punching metal, a drive shaft 13 protruding from one end side of the liquid film generating drum 12, and a magnet fixed to the tip of the drive shaft 13. A plate 14 and a support shaft 15 projecting from the other end of the liquid film generating drum 12 are provided. The drive shaft 13 and the support shaft 15 are extended in the axial direction of the liquid film generating drum 12. The liquid film generating drum 12 is disposed below the separation membrane unit 3 so that the axial center direction is horizontal, and the drive shaft 13 and the support shaft 15 are rotatable to brackets 16 and 17 rising from the bottom of the tank body 2 respectively. It is supported.

  A motor unit 18 is disposed outside the tank body 2. In the motor unit 18, a motor 18a and a magnet plate 18b rotated by the motor 18a are installed. The magnet plate 18b faces the side wall of the tank body 2, and faces the magnet plate 14 of the vaporization unit 4 with the side wall interposed therebetween, thereby constituting a magnet coupling mechanism.

  In addition, although illustration is abbreviate | omitted, a heater (for example, rubber heater) may be installed in the lower surface of the tank body 2, and a to-be-processed liquid may be heated by operating a heater as needed. In addition, a heat retention treatment may be performed for the purpose of preventing condensation of the steam generated in the tank body 2, and a rubber heater or the like may be wound around the side surface of the tank body 2 as one mode.

  In order to process a liquid using the multi-tubular separation membrane module 1 configured in this way, the inside of the tank body 2 is exhausted from the nozzle 8b, and the liquid L to be processed is sucked and introduced into the tank body 2 from the nozzle 8c. . Since the liquid film generating drum 12 is intended to generate a liquid film by rotating it to increase the evaporation area, the liquid amount of the liquid L to be processed is equal to that of the liquid film generating drum 12 as shown in FIG. Let the amount of liquid be exposed to the gas phase above the liquid level at the top. Next, nitrogen gas is introduced by adjusting a valve connected to the nozzle 8a, and the inside of the tank body 2 is made a nitrogen gas atmosphere.

  In addition, as a method of introducing the liquid L to be treated into the tank body 2, the separation membrane unit 3 may be removed and poured directly into the tank body 2 without using the nozzles 8b and 8c.

  Next, the vaporizing drum 12 is rotated by the motor unit 18 to promote the vaporization of the liquid to be treated, and the decompression device (not shown) connected to the nozzle 7 is operated to decompress the inside of the tubular separation membrane 20. Thereby, the specific component (for example, alcohol vapor) in the vapor component (for example, the mixed vapor of alcohol and water) in the tank body 2 passes through the separation membrane, and is discharged through the holes 10d to 10a. (For example, dealcoholization treatment) is performed. The component that permeates the separation membrane is not limited to alcohol.

  If the liquid level in the tank body 2 is lowered to a predetermined level, the rotation of the vaporizing drum 12 is stopped and the drain valve 2a is opened to discharge and remove the remaining liquid in the tank body 2. The method for taking out the remaining liquid is not limited to this. For example, after the separation membrane unit 3 is removed, the tank body 2 may be simply tilted and transferred to another container.

  Thereafter, a new liquid to be treated is accommodated in the tank body 2 in the same manner as described above, and separation processing is performed according to the above procedure.

  In this multi-tubular separation membrane module 1, the tubular separation membrane 20 does not come into contact with the liquid to be treated in the tank body 2, and therefore, a case where a brewed liquor such as sake or wine is dealcoholized by a vapor transmission method. However, the hydrophobic component is not adsorbed on the tubular separation membrane 20, and the alcohol removal treatment can be efficiently performed in a batch manner. If necessary, the separation unit 3 is taken out from the tank body 2 and subjected to maintenance such as cleaning. The present invention can be applied not only to brewed sake such as sake and wine, but also to alcohol removal treatment of distilled liquor such as single-type distilled shochu and continuous distilled shochu, and can also be applied to concentration treatment by dehydration.

  In this multitubular separation membrane module 1, the liquid membrane generating drum 12 is rotationally driven by a motor unit 18 via a magnet coupling mechanism. For this reason, the shaft rod 13 of the liquid film production | generation drum 12 does not penetrate the side wall of the tank body 2, and a liquid seal bearing is unnecessary. Therefore, the liquid to be treated is not contaminated by grease or the like.

  In this multitubular separation membrane module 1, the separation membrane unit 3 can be easily taken out from the tank body 2, and the separation membrane unit 3 and the tank body 2 can be easily cleaned.

  In addition, the subject matter to be separated (for example, dealcoholized) or concentrated (for example, dehydrated) is not limited to brewed liquor, and is particularly a liquid mixture composed of a plurality of components that can be separated or concentrated by a separation membrane. There is no restriction, and it may be distilled liquor or fruit juice.

  In the above embodiment, one separation membrane unit 3 and vaporization unit 4 are installed in the tank body 2, but a plurality of separation membrane units or vaporization units may be installed. Further, the number of tubular separation membranes of the separation membrane unit 3 may be other than eight.

  The above embodiment is an example of the present invention, and the present invention may be other than the above. In the above embodiment, the vaporization unit 4 has the liquid film generation drum 12. However, the vaporization unit 4 has a falling liquid film microgroove evaporator, a spray type, an evaporation sheet, a gas-liquid stirring mechanism, etc. The vaporization unit may be used.

  The vaporizing unit 4, the liquid film generating drum 12 and its shaft rod 13, the magnet plate 14, and the bracket 16 can be removed from the tank body 2, and the liquid to be processed can be simply put in the tank body.

  FIG. 10 shows a multi-tubular separation membrane module including a spray type vaporization unit 4A. The vaporization unit 4A includes a spray nozzle 40 provided in a lower portion of the side wall of the tank body 2 (lower than the tubular separation membrane 20), and the inside of the tank body 2 from a liquid outlet 41 near the bottom of the tank body 2 is provided. The liquid is taken out and supplied to the spray nozzle 40 via a pump 42 and a pipe 43. Fine droplets sprayed from the spray nozzle 40 are vaporized and separated by the tubular separation membrane 20.

  In the vaporization unit 4 </ b> B shown in FIGS. 11 and 12, a sprinkler 44 is installed instead of the spray nozzle 40. The sprinkler 44 extends below the tubular separation membrane 20 in the tank body 2 in the longitudinal direction of the tank body 2. A plurality of heater tubes 45 are installed below the sprinkler 44. The heater tube 45 is also extended in the longitudinal direction of the tank body 2. A liquid heat medium having a constant temperature (for example, 18 ° C. ± 2 ° C.) is circulated through the heater tube 45 through the inlet 45a and the outlet 45b.

  The liquid sent from the pump 42 is sprinkled from the sprinkler 44, poured into the heater tube 45, evaporated while flowing down the outer peripheral surface of the heater tube 45, and separated by the tubular separation membrane 20.

  The heater tube 45 is preferably a metal tube such as copper, but is not limited thereto. It is preferable to provide unevenness (for example, protrusions, concave holes, corrugated ridges, grooves, combinations thereof, etc.), fins, etc. on the outer peripheral surface of the heater tube 45 to increase the surface area.

  The vaporization unit 4 </ b> C shown in FIGS. 13 and 14 includes an evaporating sheet 50 with the sheet surface in the vertical direction so that the lower end is immersed in the liquid L in the tank body 2. The evaporation sheet 50 is suspended from the support block 10 and the support plate 11 by a support member 51, and is disposed below the tubular separation membrane 20. However, the evaporating sheet 50 may be a self-supporting type and may rise from the bottom surface of the tank body 2. Examples of the material for the evaporation sheet 50 include, but are not limited to, a nonwoven fabric and a hydrophilic porous synthetic resin sheet.

  The liquid L in the tank body 2 is sucked into the evaporating sheet 50 by capillary action, evaporates from the evaporating sheet 50 and is separated by the tubular separation membrane 20.

  The vaporization units 4D and 4E shown in FIGS. 15, 16 and 17 are each provided with a gas-liquid stirring mechanism. In the vaporization unit 4D shown in FIG. 15, after the gas in the tank body 2 is sucked through the suction pipe 60 and the collecting pipe 61 using the circulation pump 62 installed outside, the liquid is supplied by the air supply pipe 63 and the air diffusion pipe 64. By injecting into L, bubbles are generated and gas-liquid stirring is promoted.

  In the vaporization unit 4E shown in FIGS. 16 and 17, an aeration stirrer 70 is used. The aeration stirrer 70 covers a magnet plate 71 facing the lower surface of the cover plate 5, a rotating shaft 72 connected to the magnet plate 71, a rotating plate 73 provided at the lower end of the rotating shaft 72, and the rotating shaft 72. The bearing 75 etc. supported by 74 is provided. The cover 74 is attached to the lower surface of the lid plate 5.

  The turntable 73 is provided with a water inlet 76 at the center of the bottom surface and a plurality of ejection holes 77 extending in the radial direction from the water inlet 76.

  An intake port 78 is provided in the middle of the rotary shaft 72 in the vertical direction, and an introduction hole 79 connected to the intake port 78 extends downward. The lower part of the introduction hole 79 is branched into a plurality of branch holes 79 a, and the tip of each branch hole 79 a is connected to the middle of the ejection hole 77.

  A drive-side magnet plate 81 is disposed above the magnet plate 71 so as to face the upper surface of the lid plate 5, and is configured to be rotationally driven by a motor 82. The motor 82 is attached to the housing 83, and the housing 83 is attached to the upper surface of the lid plate 5.

  When the motor 82 is driven to rotate the magnet plate 81, the magnet plate 71 is driven and rotated, and the rotating shaft 72 is rotated. Then, centrifugal force acts on the liquid in the ejection hole 77, and the liquid L in the tank body 2 flows out from the water inlet 76 through the ejection hole 77 in the radial direction. By the ejector action by this flow, the gas G in the tank body 2 is bubbled together with the liquid L into the liquid L through the intake port 78, the introduction hole 79, and the branch hole 79a.

  Even when any of the above vaporization units is used, the tank body 2 and / or the liquid L should be cooled (preferably externally (not shown here)) before the residual liquid in the tank body 2 is discharged and taken out. Thus, the vapor existing in the tank may be condensed and recovered. The cooling operation may be continued while discharging the residual liquid.

  Sake was dealcoholized using the multi-tubular separation membrane module 1 shown in FIGS. The tank body 2 has a height of 252 mm, a longitudinal direction of 550 mm, and a lateral direction of 150 mm. The liquid film generating drum 12 has a diameter of 70 mm and a length of 440 mm. Eight tubes having a diameter of 12 mm and a length of 400 mm were installed as the tubular separation membrane 20 of the separation membrane unit 3. The distance between the upper surface of the liquid membrane generating drum 12 and the lower surface of the tubular separation membrane 20 of the separation membrane unit 3 is 65 mm, and the distance between the upper surface of the tubular separation membrane 20 of the separation membrane unit 3 and the lower surface of the lid plate 5 is 80 mm.

  Commercially available sake A (initial alcohol concentration: 13.0 vol.%) Or sake B (initial alcohol concentration: 15.6 vol.%) Was poured into 1,000 g tank body 2. The protruding height of the liquid film generating drum 12 from the surface of the sake liquid was about 50 mm. The liquid film production drum 12 was rotated at 70 rpm, and the dealcoholization treatment was performed for 10 hours (Sake A) or 7.5 hours (Sake B) at a liquid temperature of 26 to 27 ° C. and a gas phase temperature of 25 to 26 ° C. A vacuum pump was connected to the nozzle 7 via a pressure-resistant hose and a cold trap, and the pressure at the outlet of the nozzle 7 was reduced to 0.2 to 0.4 kPaA.

  The permeate flux of alcohol vapor is shown in FIG. As shown in FIG. 18, the alcohol permeation flux of sake A and sake B shows a difference according to the alcohol concentration. In both sake A and sake B, the alcohol permeation flux decreases with time. This is because the alcohol concentration of sake in the tank body 2 decreases with time due to dealcoholization treatment.

DESCRIPTION OF SYMBOLS 1 Multitubular separation membrane module 2 Tank body 3 Separation membrane unit 4,4A, 4B, 4C, 4D, 4E Evaporation unit 10 Support block 12 Liquid membrane production | generation drum 14,18b Magnet plate 18 Motor unit 20 Tubular separation membrane 40 Spray nozzle 42 Pump 44 Sprinkler 45 Heater tube 50 Evaporating sheet 64 Air diffuser tube 70 Aeration stirrer 73 Turntable

Claims (13)

A tank body having an opening on the upper surface;
A tubular separation membrane installed in the upper part of the tank;
A vaporization unit disposed in a lower portion of the tank;
A multi-tubular separation membrane module comprising: In Claim 1, it is a multi-tubular separation membrane module provided with the separation membrane unit provided in the tank,
The separation membrane unit is
A lid plate removably attached to the opening;
The tubular separation membrane supported by the lid plate;
A suction port provided in the lid plate;
A multitubular separation membrane module comprising communication means for communicating the suction port and the inside of the tubular separation membrane. In claim 2,
One end side of the tubular separation membrane is fixed to a support block,
The other end of the tubular separation membrane is sealed and supported by a support plate;
A multi-tubular separation membrane module, wherein a passage is provided in the support block for sucking the inside of the tubular separation membrane.   4. The multi-tubular separation membrane module according to claim 3, wherein the tubular separation membrane is inserted into and supported by an opening provided in the support plate.   5. The multi-tubular separation membrane module according to claim 1, wherein the vaporizing unit includes a liquid membrane generating drum having a horizontal axis direction. In claim 5, a first magnet is provided at the end of the shaft rod that supports the liquid film generating drum, the first magnet faces the inner surface of the side wall of the tank body,
A multi-tubular separation membrane characterized in that a second magnet is arranged on the outer surface of the side wall of the tank body so as to face the first magnet, and the second magnet can be rotated by a motor. module.   5. The multi-tubular separation membrane module according to claim 1, wherein the vaporizing unit includes a falling liquid membrane type micro-groove evaporator.   5. The multi-tubular separation membrane module according to claim 1, wherein the vaporizing unit is a spray type.   5. The multi-tubular separation membrane module according to claim 1, wherein the vaporization unit includes an evaporation sheet.   5. The multi-tubular separation membrane module according to claim 1, wherein the vaporization unit has a gas-liquid stirring mechanism.   A liquid processing method using the multi-tubular separation membrane module according to claim 1. In claim 11,
Supplying the liquid to be treated in the tank so as not to be immersed in the tubular separation membrane;
Vaporizing the liquid to be treated by the vaporizing unit and depressurizing the inside of the tubular separation membrane to permeabilize the liquid to be treated; and
A step of discharging the liquid in the tank after the liquid level of the liquid to be treated in the tank is lowered to a predetermined level;
The liquid processing method characterized by having.   The liquid processing method characterized by having the process of cooling a tank body and / or a liquid before the process of discharging | emitting the liquid in a tank.

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