Carbon membrane for fluid separation, fluid separation membrane module, and method for producing carbon membrane for fluid separation
AssigneeToray Industries, Inc.
InventorsKosaku Takeuchi, Kentaro Tanaka, Takaaki Mihara, Tomoyuki Horiguchi
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Abstract
The present invention provides a carbon membrane for fluid separation with which a high-pressure fluid can be separated and purified and which has excellent pressure resistance and is less apt to be damaged. The present invention relates to a carbon membrane for fluid separation, including: a core layer which has a co-continuous porous structure; and a skin layer which has substantially no co-continuous porous structure and is formed around the core layer.
Claims18
A carbon membrane for fluid separation, comprising:
- a core layer which has a co-continuous porous structure;
- and a skin layer which has substantially no co-continuous porous structure and is formed around the core layer, wherein the co-continuous porous structure of the core layer has a structural period of 0.002 to 10 μm.
A hollow-fiber carbon membrane for fluid separation comprising:
- a core layer which has a co-continuous porous structure;
- a skin layer which has substantially no co-continuous porous structure and is formed around the core layer;
- and a hollow part formed inside the core layer, wherein the co-continuous porous structure of the core layer has a structural period of 0.002 to 10 μm.
A process for producing a carbon membrane for fluid separation, the process comprising:
- step 1:
- a step in which 10 to 90% by weight of a carbonizable resin and 90 to 10% by weight of an eliminable resin are brought into a compatibly mixed state to obtain a resin mixture;
- step 2:
- a step in which the resin mixture obtained in the step 1 is caused to undergo phase separation to form a co-continuous phase separation structure and the separated phases are fixed to obtain a precursor for the carbon membrane for fluid separation;
- and
- step 3:
- a step in which the precursor for the carbon membrane for fluid separation obtained in the step 2 is carbonized by pyrolysis.
A process for producing a hollow-fiber carbon membrane for fluid separation, the process comprising:
- step 1:
- a step in which 10 to 90% by weight of a carbonizable resin and 90 to 10% by weight of an eliminable resin are brought into a compatibly mixed state to obtain a resin mixture;
- step 2:
- a step in which the resin mixture that has been brought into the compatibly mixed state in the step 1 is spun into a hollow fiber and caused to undergo phase separation to form a co continuous phase separation structure to obtain a precursor for the hollow-fiber carbon membrane for fluid separation;
- and
- step 3:
- a step in which the precursor for the hollow-fiber carbon membrane for fluid separation obtained in the step 2 is carbonized by pyrolysis.
Dependencies are inferred from the claim text.