JPH0632175Y2 - Hollow fiber membrane module cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to various treatments such as purification, absorption and separation of liquid or gas by a combination of an adsorbent and a hollow fiber membrane,
The present invention relates to a hollow fiber membrane module cartridge that can be easily assembled, replaced and stored.

[Conventional technology and its problems]

In recent years, environmental standard regulations for wastewater, waste liquid, smoke exhaust, exhaust from chemical, petrochemical, pharmaceutical, steel and other key industrial sites have become more stringent, and it is necessary to purify them, absorb waste and separate them. Nature is increasing. Also, due to the concentration of population in large cities and the rise of outdoor sports due to the improvement of living standards, there is an increasing demand for clean water and delicious water. Furthermore, the problem of drainage of the nuclear industry or the purification of water due to the development of the electronic industry, which requires a large amount of water purification, has become a major problem.

Conventionally, the treatment of various liquids or gases as described above is carried out by combining a large number of treatment equipments according to the purpose of each liquid or gas or treatment. Therefore, the device becomes complicated, the operation becomes complicated, and not only the device itself is expensive, but also the cost required for operation is great. In addition, a treatment device combining an adsorbent and a hollow fiber membrane has been developed, but the combination of the adsorbent and the hollow fiber membrane is complicated, or the adsorbent and the hollow fiber membrane can be sufficiently processed. In many cases, it cannot be said that they are present.

[Means for solving problems]

According to the present invention, a hollow fiber bundle is disposed in the hollow portion of a solidified and molded tubular structure made of an adsorbent, and a porous tubular body is provided so as to circumscribe the hollow fiber bundle. The present invention relates to a hollow fiber membrane module cartridge used for processing.

That is, according to the present invention, a hollow fiber bundle solidified and molded from an adsorbent accommodates a hollow fiber bundle that is fixed in a fluid-tight manner by a potting material while keeping at least one open end in an open state. In this hollow membrane module cartridge, a porous tubular body is provided externally to the hollow fiber bundle, and the end of the porous tubular body is embedded in a potting material so as to be integrated with the hollow fiber bundle. The present invention relates to a hollow fiber membrane module cartridge, which is fixed to the hollow fiber membrane module cartridge with a potting material.

The hollow fiber membrane module cartridge of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing an example of the hollow fiber membrane module cartridge of the present invention.

In FIG. 1, 1 is a hollow fiber membrane module cartridge, 2 is a tubular structure, 3 is a porous tubular body, 4 is a hollow fiber bundle, 5 is a potting material portion, and 6 is a sealing portion.

Examples of adsorbents that form the tubular structure 2 include carbonaceous adsorbents such as activated carbon, coal, and coke, silica, alumina,
Silica-alumina-based adsorbents made of activated alumina, activated clay, zeolite, etc., adsorbents made of inorganic fine particles containing oxides, hydroxides or salts of metals such as magnesium, lead, iron, cobalt, nickel, copper, polystyrene. ,
(Meth) acrylate polymers such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, polyvinyl acetate, polyvinyl chloride,
Polyvinylidene chloride, polyacrylonitrile, polyurethane, polyethylene terephthalate, aromatic polyamide, polysulfone, polyether sulfone, polycarbonate, ethylene-propylene copolymer, polybutadiene, an adsorbent made of a polymer material such as polyisoprene,
Examples include adsorbents made of natural products such as asbestos, chrysotile, kaolinite, feldspar powder, diatomaceous earth, titanium oxide, and peat. The shape of the adsorbent is powder, granular, fruit-shaped,
Both flakes and fibers can be used and are not particularly limited.

As a means for forming the solidified and molded tubular structure 2 made of an adsorbent, there is a method of solidifying and adsorbing the adsorbent. Examples of the method for solidifying and molding the adsorbent include publicly known means such as a method in which synthetic fibers are mixed with the adsorbent and the mixture is heated and compression-molded to be heat-crimp-bonded. In the tubular structure 2 formed by solidification molding, the adsorbent does not drop off very much, and crushing due to the resistance of the processing fluid, consumption, movement, and flow channels associated with the change in the mass of the molded body do not occur, so the fluid to be processed is not leaked. Is extremely small. Also, since the contact area between the adsorbent and the fluid to be treated is large, the adsorption capacity is maximized and the filtration life is extremely extended.

The tubular structure 2 of the present invention may be any columnar body having a hollow portion capable of accommodating the hollow fiber bundle 4 in the center thereof, and has a circular cross section,
It may have any shape such as an ellipse, a triangle, a quadrangle, and a polygon. In addition, the tubular structure 2 may be entirely composed of the same adsorbent, or in order to provide the hollow fiber membrane module cartridge 1 with multiple functions, a plurality of adsorbents may be mixed or laminated in the radial direction. It may have a different structure. Further, the inner and outer surfaces of the tubular structure 2 may be protected by a non-woven fabric, a mesh metal or the like, if necessary.

Both end surfaces of the tubular structure 2 are liquid-tightly and airtightly sealed by a sealing material. The end face may be sealed by directly applying an adhesive such as an epoxy-based, urethane-based, or silicon-based adhesive, or by bonding a molded product made of rubber, resin, metal, or the like with the adhesive described above. Good. If the material used for sealing and the structural material can be fused, they may be sealed by fusion.

As the hollow fiber membranes forming the hollow fiber bundle 4, hydrophilic porous hollow fiber membranes made of hydrophilic resin such as cellulose resin and polyvinyl alcohol, polyolefin resin, fluorocarbon resin, polyester resin, polyamide resin, etc. The hydrophobic porous hollow fiber membranes made of the above hydrophobic resin, those obtained by hydrophilizing these hydrophobic porous hollow fiber membranes with a surfactant, grafting hydrophilic monomers and coating hydrophilic polymers. Hydrophilized or ceramic membrane, polysulfone resin,
Examples include non-porous hollow fiber membranes made of polyether sulfone resin, polyimide resin, polyamide resin, cellulose resin and the like.

The hollow fiber bundle 4 need only be flow-tightly fixed by a potting material while keeping at least one of the open ends in an open state, or may be a U-shaped bundle that is open at both ends. Alternatively, they may be arranged in a straight line so that one end is closed and the other end is opened.

The porous tubular body 3 is made of synthetic resin, metal, or the like, has a large number of holes or slits on its side surface, and is provided for protecting the hollow fiber bundle 4 and reinforcing the entire module. The end of the porous tubular body 3 is fixed to the inner peripheral surface of the tubular structure 2 with a potting material together with the hollow fiber bundle 4, and the potting material is fixed by communicating with the hole or slit of the porous tubular body 3. Since it is done (anchor effect), it is fixed extremely firmly. Therefore, the material forming the porous tubular body 3 does not necessarily have good adhesiveness to the potting material, and a material having no adhesiveness or a poor adhesiveness such as fluorocarbon resin or polyethylene. It is also possible to combine the porous tubular body 3 made of polyolefin such as polypropylene with a potting material made of polyurethane resin, epoxy resin or the like.
Further, since the porous tubular body 3 is embedded inside the potting material portion, the shape of the potting material portion can be appropriately designed according to the method of sealing the end surface of the tubular structure 2.

The shape and size of the pores or slits of the porous tubular body 3 are not particularly limited, but the pore diameter is 1 to 500 μm, preferably 5 to 400 μm, and the porosity is 20 to 60.
%, Preferably 30 to 50% of the holes are present substantially uniformly on the front surface. In general, the pore diameter of the hollow fiber membrane is often 1 μm or less, and since the porous tubular body 3 having the above pore diameter and porosity acts as a prefilter for the hollow fiber membrane, the hollow fiber membrane has a long filtration life. Very preferable. When the pore size is less than 1 μm, the pressure loss of the fluid passing through the porous tubular body 3 becomes excessive, and when the pore size exceeds 500 μm, the function of the hollow fiber membrane as a prefilter is lost, which is not preferable. If the porosity is less than 20%, the fluid pressure loss becomes excessive and the flow of the fluid becomes non-uniform, and if the porosity exceeds 60%, the mechanical strength of the tubular structure 3 decreases. Not preferable.

The potting material used for the potting material part 5 is not particularly limited, but it is preferable to use a polyurethane resin.

The hollow fiber membrane module cartridge of the present invention is, for example,
After fixing the hollow fiber bundle and the porous tubular body together with a potting material, the hollow fiber bundle is housed in the hollow portion of the solidified and molded tubular structure made of an adsorbent and sealed with a sealing material other than the opening of the hollow fiber membrane. It can be formed by hermetically sealing the end faces. Further, if necessary, the end portion on the side opposite to the potting material portion may be completely sealed including the hollow portion of the tubular structure.

[Effect of device]

The hollow fiber membrane module cartridge of the present invention is provided with a porous tubular body circumscribing the hollow fiber bundle so that the hollow fiber bundle is physically protected and has a specific pore diameter and porosity. Since the tubular body acts as a prefilter, the filtration life of the hollow fiber membrane is extremely long. Further, since the end of the porous tubular body is fixed to the inner peripheral surface of the tubular structure together with the hollow fiber bundle in a state where it is completely embedded in the potting material portion, the shape of the cartridge end is arbitrary. Therefore, the tubular structure, the porous tubular body, and the hollow fiber bundle can be extremely firmly fixed by the potting material and the sealing material.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of the hollow fiber membrane module cartridge of the present invention. 1: Hollow fiber membrane module cartridge 2: Tubular structure 3: Porous tubular body 4: Hollow fiber bundle 5: Potting material part 6: Seal part

Claims (1)

[Scope of utility model registration request] 1. A hollow fiber bundle solidified and molded from an adsorbent, and a hollow fiber bundle fixed in a flow-tight manner by a potting material is stored in the hollow portion while at least one of the open ends is kept open. In the hollow membrane module cartridge, a porous tubular body is provided so as to circumscribe the hollow fiber bundle, and the end portion of the porous tubular body is embedded in a potting material so as to be integrated with the hollow fiber bundle. A hollow fiber membrane module cartridge characterized by being fixed by a potting material.