JPH0713429U - Roll type membrane module - Google Patents

Abstract

(57) [Abstract] [Purpose] Advantageous configurations of a wound membrane module for degassing gas dissolved in a liquid to be treated and a wound membrane module for adsorbing gas in the liquid I will provide a. A spiral membrane material, which is formed by winding a housing having a fluid supply port and a discharge port and a gas-permeable and liquid-impermeable sheet-shaped material in a longitudinal direction and is housed in the housing. A cylindrical seal film material 2 composed of 1 and one end of which is fixed to the inner surface of the housing between the spiral wound film material and the housing, and the other end of which is attached to the peripheral surface of the spiral wound film material 1. Is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wound-type membrane module, and a wound-type degassing membrane module for degassing gas dissolved in a liquid and a wound-type gas adsorption membrane for adsorbing gas in the liquid. The present invention relates to an advantageous configuration such as a module.

[0002]

[Prior art]

 The wound-type membrane module is a spirally wound membrane that is formed by spirally winding a sheet-shaped functional membrane around a central tube, and accommodates this in a housing. By joining the edge portions of the membrane, the envelope-shaped membrane is formed as if it was rolled, and set inside the housing.

The above-mentioned membrane module uses a gas-permeable and liquid-impermeable sheet-like material as a functional membrane to reduce the pressure inside the membrane and bring the liquid to be treated into contact with the outside. Used as a degassing membrane module. It can also be used as a gas adsorption membrane module for adsorbing a specific gas such as carbon dioxide gas by flowing a gas adsorbing liquid inside the membrane and bringing the gas to be treated into contact with the outside. Alternatively, conversely, the liquid material to be treated can be supplied to the inside of the membrane to make the outside of the membrane a depressurized state or a channel for the adsorbed liquid. Furthermore, by using a reverse osmosis membrane, an ultrafiltration membrane, or a precision separation membrane as the functional membrane, it can be used as a separation membrane module.

By the way, as a conventional method for mounting the above-mentioned spiral membrane material in the above-mentioned housing, there are shown in FIGS. 7 to 9, and the one in FIG. An adhesive layer 22 is formed between the ring-shaped film material 21 and the one shown in FIG. 8, and a ring member 24 using an O-ring 23 is provided between the housing 20 and the spiral wound film material 21. The member 24 and the spiral film material 21 are fixed by an adhesive layer 22.

In FIG. 9, a ring member 25 is provided in multiple stages between the housing 20 and the spiral wound film material 21, and the spiral wound film material 21 is stabilized.

[0006]

[Problems to be solved by the device]

 None of the above-described conventional settings of the spiral wound membrane material for the housing is preferable. That is, the spiral membrane material set in this way needs to be inspected, adjusted, or replaced as appropriate, but the spiral membrane material adhered with the adhesive layer 22 as shown in FIGS. 7 and 8 cannot be removed. It is impossible, and the spiral membrane material is damaged by removing it, and a solidified portion remains on the inner surface of the housing, making it difficult to set again.

Since the spiral member 21 is held by the ring member 25 in FIG. 9, inspection, repair and replacement by removing the spiral member 21 are easy, but the pressure of the fluid to be treated is large. Fluctuations and temperature fluctuations cause the spirally wound film material 21 to expand and contract, resulting in an inadequate tight sealing relationship between the inner surface of the body of the housing 20 and the spirally wound film material. Degassing or adsorption will not be obtained.

[0008]

[Means for Solving the Problems]

 The present invention has been studied to solve the problems of the conventional wound type membrane module described above, and succeeded in effectively solving those disadvantages by using a specific sealing membrane material. It is as follows.

(1) A housing having a fluid supply port and a fluid discharge port, and a gas-permeable and liquid-impermeable sheet-shaped material are wound in the longitudinal direction, and are housed in the housing. A tubular seal film made of a spiral film material, one end side of which is fixed to the inner surface of the housing between the spiral film material and the housing, and the other end side of which is attached to the peripheral surface of the spiral film material. A wound-type membrane module, which is provided with a material.

[0010]

A spiral membrane material formed by winding a housing having a fluid supply port and a discharge port and a gas-permeable and liquid-impermeable sheet-shaped material in the lengthwise direction and housed in the housing. The degassing membrane module, the gas adsorption membrane module, or the like is formed in the housing.

By providing a cylindrical seal film material, one end of which is fixed to the inner surface of the housing and the other end of which is attached to the peripheral surface of the spiral film material, between the spiral film material and the housing. , Facilitating the removal, inspection, repair and replacement of the spiral wound membrane material, allowing expansion and contraction of the spiral wound membrane material, and allowing the fluid to pass between the housing and the spiral wound membrane material. Take care of.

[0012]

【Example】

 A specific embodiment of the present invention as described above will be described below with reference to the accompanying drawings.

First, in the present invention, the sheet-shaped material forming the spiral wound membrane material needs to be gas permeable and liquid impermeable, and as such a source, polyethylene, polypropylene, polystyrene is used. A continuous porous material such as polyvinyl chloride, polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyester, and fluororesin is used. For example, a porous polytetrafluoroethylene resin film and a breathable bonding material are preferably laminated. It is formed. In the case of a wound type degassing membrane module, it is preferable to further laminate a non-porous gas permeable material on the liquid side at the time of use. As the non-porous gas permeable material, a silicone resin, which is a polymer resin having a gas permeable function, is suitable.

It is preferable that the sheet-shaped material is laminated so that the bonding material layers face each other, and the edge portions thereof are bonded by heat fusion to form an envelope-shaped film. Since it is made of a material having a melting point lower than that of the fluoroethylene resin, the thermal fusion does not change the quality of the porous polytetrafluoroethylene resin. Further, the spiral film material is formed by winding the envelope film in the length direction, but a stainless steel or plastic core material may be used for the winding. Also, the membrane material requires at least one fluid outlet. In the case of a degassing membrane module, only the discharge port may be used, but in the case of a gas adsorption membrane module, both a supply port and a discharge port for the gas adsorbing liquid are required. As a result, the spiral film material 1 as shown in FIGS. 1 to 6 is obtained.

The housing 10 for accommodating the spiral wound membrane material 1 is formed of vinyl chloride or metal into a cylindrical shape, and after the spiral wound membrane material 1 is charged, lid members are provided at both ends or one end. Is also provided with a fluid supply port and a fluid discharge port.

In the present invention, in the structure as described above, as shown in FIGS. 1 and 2, the housing 10 and the spiral wound membrane material 1 (such as polypropylene, polyethylene, There is a sheet-like material such as soft vinyl chloride or porous polytetrafluoroethylene impregnated with a silicone resin) and a cylindrical sealing film material 2 is used, and the sealing film material is flexible. However, it is impermeable to fluids such as liquids or gases, and is basically impermeable to aqueous liquids for degassing membrane modules and gas impermeable for adsorption membrane modules. Anything is fine. One side of this cylindrical seal film material is fixed to the inner surface of the housing body 10 by the band 5, and in this embodiment, the other end side of the seal film material 2 is joined to the spiral wound film material 1 in a free state. Is made to be done.

That is, when a fluid is supplied from below the housing body 10 in FIG. 1 and a fluid pressure is applied, the other end 11 of the seal film member 2 is joined to the peripheral surface of the spiral wound film member 1. The sealing relationship is automatically obtained by the pressure, there is nothing that restricts the expansion and contraction of the spiral wound membrane material 1, and the whole amount of fluid passes through the spiral wound membrane material 1. Become. Of course, the sealing film is properly removed only by removing the band 5, and there is nothing that hinders the replacement or inspection of the spiral wound film material 1.

FIGS. 3 and 4 show a method of fixing the other end side of the seal film material 2 in the one shown in FIGS. 1 and 2, that is, the spiral shape covered with the seal film material 2. The mounting band 6 made of polypropylene or the like is fixed to the peripheral surface of the film material 1 in one or more stages. 3 and 4, since the upper and lower sides of the sealing film material 2 are fixed respectively, the mounting relationship becomes extremely stable.

Further, FIG. 5 shows one of more preferable modes for mounting the above-mentioned seal film material 2 on the housing 10 side. That is, as described above, the end face of the housing body 10 is provided with a lid, and the end portion of the housing body 10 is formed with the step portion 12 for providing the lid 8 above the step portion 12. The plug-like projection 18 of the lid 8 is fitted to the lid 8 and is sealed by the packing 9 provided on the peripheral surface of the plug-like projection 18. In the present invention, the step 12 is shown in FIG. The part up to the position indicated by the dotted line in FIG. 2 is further extended to the attachment part of the band 5.

That is, even if the band 5 is attached by making it as shown in FIG. 5, the band does not particularly protrude from the inner surface of the housing body 10, and the attachment state of the seal film material 2 is also stable. And a favorable utilization relationship is formed.

The band 5 is made of an elastic material such as steel, especially stainless steel (stainless steel), so that the elastic state restores the mounting state as shown in FIG. 1, 2 or 5. Can be formed as desired. The band 5 can be formed by fastening both ends of the band 5 as shown in FIG.

In the present invention, the cylindrical sealing film material is used as described above to secure the sealing property between the inner peripheral surface of the housing and the spiral film material, but the sealing property is not required to be perfect. Absent. However, if this sealing property is insufficient, part of the fluid to be treated will flow out without passing through the inside of the spiral wound membrane material, resulting in a decrease in degassing efficiency, adsorption efficiency, etc. Will end up.

[0023]

[Effect of device]

 According to the present invention as described above, the sealing film material provided between the housing and the spiral wound film material effectively prevents the fluid to be processed from passing through between these members, and further, the bonding is performed. Since it is not necessary to perform the inspection, the spiral membrane material can be easily inspected, repaired and replaced, and the expansion and contraction of the spiral membrane material can be appropriately allowed for advantageous use. Above is a device with a great effect.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional explanatory view schematically showing a configuration of a typical example according to the present invention.

FIG. 2 is a cross-sectional explanatory view of what is shown in FIG.

FIG. 3 is a side view showing a mounting state on one end side of the seal film material.

FIG. 4 is a plan view thereof.

FIG. 5 is a partial side view showing an example of a mounting relationship of a seal film to a housing.

FIG. 6 is a perspective view of a band used in the present invention.

FIG. 7 is an explanatory diagram showing an adhesive relationship between a spiral wound film material and a housing according to a conventional technique.

FIG. 8 is an explanatory diagram showing an adhesive relationship between a spiral wound film material and a housing according to a conventional technique that employs an O-ring.

FIG. 9 is an explanatory diagram showing an adhesive relationship between a spiral wound film material and a housing according to a conventional technique in which ring members are provided in multiple stages.

[Explanation of symbols]

 1 Spiral Membrane Material 2 Sealing Membrane Material 5 Band 6 Mounting Band 8 Lid 9 Packing 10 Housing Body 11 Seal Membrane Other End 12 Step 15 Fixing 18 Plug-like Protrusion 20 Housing 21 Spiral Membrane 22 Adhesive Layer 24 O-ring 24 Ring member 25 Ring member

Claims (1)

[Scope of utility model registration request] 1. A spiral shape which is formed by winding a housing having a fluid supply port and a discharge port and a gas-permeable and liquid-impermeable sheet-shaped material in a longitudinal direction and is housed in the housing. A tubular seal film material comprising a film material, one end side of which is fixed to the inner surface of the housing between the spiral film material and the housing, and the other end side of which is attached to the peripheral surface of the spiral film material. A wound type membrane module characterized by being provided.