Ceramic pervaporation membrane and ceramic vapor-permeable membrane
AssigneeNGK Insulators, Ltd.
InventorsMakoto Teranishi, Hideyuki Suzuki, Satoshi Sakashita, Manabu Isomura
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Abstract
A ceramic pervaporation membrane and a ceramic vapor-permeable membrane where the total aperture length of discharge channels parallel to the channel direction of water collection cells is at least 10% of the length of filtration cells and where the ratio m/n of the number m of rows of filtration cells to the number n of rows of water collection cells is between 1 and 4 have a high water permeation rate and a high separation coefficient.
Claims8
A ceramic filter comprising a porous body and a separation membrane that separates a mixed fluid containing water and an organic solvent into a permeated separation water vapor,
- wherein the porous body has opposed end faces and an outer peripheral face, plural filtration cells extending from one end face to the other end face and forming rows, and plural water vapor collection cells extending from one end face to the other end face and forming rows, the water vapor collection cells being plugged in both the end faces, and discharge channels provided so that the water vapor collection cells communicate with an external space, wherein a ratio m/n of the number m of the rows of filtration cells to the number n of the rows of water vapor collection cells is between 1 and 4,
- the separation membrane is disposed on inner wall faces of the filtration cells of the porous body,
- a total aperture length of the discharge channels parallel to the channel direction of the water vapor collection cells is at least 10% of the length of the filtration cells, and
- the permeation rate per membrane area of the ceramic filter is greater than 1.8 kg/m2h.
Dependencies are inferred from the claim text.