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A platform for research: civil engineering, architecture and urbanism
CERAMIC POROUS SUPPORT BODY FOR SEPARATION MEMBRANE
To provide a ceramic porous support body for a separation membrane for increasing the surface area of a membrane forming surface without causing reduction in mechanical strength and an increase in permeation resistance.SOLUTION: A porous base material 12 has a large average pore diameter, but a porous membrane 14 for covering its outer peripheral surface 12a has a small average pore diameter, and a material and a surface state suitable for forming a separation membrane are realized by the porous membrane 14. The porous base material 12 is constituted in a thickness dimension required for securing mechanical strength due to having a large pore diameter such as sufficiently reducing permeation resistance of a treatment object fluid, and even if a permeation distance long part in the thickness direction is generated by providing a projection strip 16, permeation resistance is kept in a sufficiently small state. That is, while keeping the permeation resistance small, the area of the outer peripheral surface 12a is enlarged as compared with a case of a simple cylindrical shape.SELECTED DRAWING: Figure 1
【課題】機械的強度の低下や透過抵抗の増大を伴うことなく膜形成面の表面積を増大させた分離膜用セラミック多孔質支持体を提供する。【解決手段】多孔質基材１２は大きな平均細孔径を備えているが、その外周面１２ａを覆う多孔質膜１４は小さな平均細孔径を備えており、分離膜を形成するために好適な材料や表面状態が多孔質膜１４によって実現されている。また、多孔質基材１２は、処理対象流体の透過抵抗が十分に小さくなるような大きな細孔径を有しているので、機械的強度の確保に必要な厚さ寸法に構成し、且つ、凸条１６が設けられることによって厚み方向の透過距離の長い部分が生じても、透過抵抗が十分に小さい状態に保たれる。すなわち、透過抵抗を小さく保ったまま、外周面１２ａの面積が、単純な円筒形状の場合に比較して大きくされている。【選択図】図１
CERAMIC POROUS SUPPORT BODY FOR SEPARATION MEMBRANE
To provide a ceramic porous support body for a separation membrane for increasing the surface area of a membrane forming surface without causing reduction in mechanical strength and an increase in permeation resistance.SOLUTION: A porous base material 12 has a large average pore diameter, but a porous membrane 14 for covering its outer peripheral surface 12a has a small average pore diameter, and a material and a surface state suitable for forming a separation membrane are realized by the porous membrane 14. The porous base material 12 is constituted in a thickness dimension required for securing mechanical strength due to having a large pore diameter such as sufficiently reducing permeation resistance of a treatment object fluid, and even if a permeation distance long part in the thickness direction is generated by providing a projection strip 16, permeation resistance is kept in a sufficiently small state. That is, while keeping the permeation resistance small, the area of the outer peripheral surface 12a is enlarged as compared with a case of a simple cylindrical shape.SELECTED DRAWING: Figure 1
【課題】機械的強度の低下や透過抵抗の増大を伴うことなく膜形成面の表面積を増大させた分離膜用セラミック多孔質支持体を提供する。【解決手段】多孔質基材１２は大きな平均細孔径を備えているが、その外周面１２ａを覆う多孔質膜１４は小さな平均細孔径を備えており、分離膜を形成するために好適な材料や表面状態が多孔質膜１４によって実現されている。また、多孔質基材１２は、処理対象流体の透過抵抗が十分に小さくなるような大きな細孔径を有しているので、機械的強度の確保に必要な厚さ寸法に構成し、且つ、凸条１６が設けられることによって厚み方向の透過距離の長い部分が生じても、透過抵抗が十分に小さい状態に保たれる。すなわち、透過抵抗を小さく保ったまま、外周面１２ａの面積が、単純な円筒形状の場合に比較して大きくされている。【選択図】図１
CERAMIC POROUS SUPPORT BODY FOR SEPARATION MEMBRANE
分離膜用セラミック多孔質支持体
WATANABE HIROKAZU (author) / EDA TOMOKAZU (author) / NISHIDA YUKO (author)
2019-05-30
Patent
Electronic Resource
Japanese
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