METHOD FOR RECYCLING UNUSED GAS IN MEMBRANE REACTOR

    公开(公告)号:EP4324549A1

    公开(公告)日:2024-02-21

    申请号:EP22820248.7

    申请日:2022-06-08

    Abstract: The purpose of the present invention is to provide a method for recycling an unused gas in a membrane reactor, the method making it possible to reduce production cost of a target product by recycling H2 gas permeating a separation membrane and flowing out from the membrane reactor. This method for recycling an unused gas in a membrane reactor includes: a gas phase reaction step in which a raw material gas containing hydrogen gas and at least one of carbon monoxide gas and carbon dioxide gas is introduced into a first space of a membrane reactor including a separation membrane, the first space being on a non-permeation side and filled with a catalyst, and a second space being on a permeation side, to synthesize a reaction product other and water vapor; a product membrane separation step in which at least one of the reaction product and the water vapor is allowed to permeate the separation membrane and enter the second space for separating; a mixed gas flowing out step in which a sweeping gas is flowed through the second space to cause hydrogen gas entering the second space to flow out; and a hydrogen gas recycling step in which at least hydrogen gas in the mixed gas flowed out is used as the raw material gas of the gas phase reaction step or a raw material gas of another process.

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