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    • 3. 发明申请
    • MULTISTAGE BATH CONDENSER-REBOILER AND CRYOGENIC AIR SEPARATION UNIT USING THE SAME
    • US20230079087A1
    • 2023-03-16
    • US17785792
    • 2020-12-16
    • TAIYO NIPPON SANSO CORPORATION
    • Nobuaki EGOSHI
    • F25J3/04F28D9/00F28F3/02
    • One object of the present invention is to provide a multistage bath condenser-reboiler capable of suppressing a decrease in condensation efficiency and making it compact. The present invention provides a multistage bath condenser-reboiler, including: a heat exchange core including a heat exchange section formed by adjacently stacking an evaporation passage through which liquid to be evaporated flows, and which is partitioned into a plurality of stages, and a condensation passage through which gas is condensed by heat exchange with the liquid; a liquid reservoir which is configured to store liquid which is supplied into the evaporation passage or flowed out from the evaporation passage; and a liquid communication passage which is configured to flow the liquid in the liquid reservoir from an upper liquid reservoir into a lower liquid reservoir; and the liquid reservoir is provided for each evaporation passage partitioned into the plurality of stages on at least one side surface in a width direction of the heat exchanger core, which is orthogonal to a stacking direction of the condensation passage and the evaporation passage, wherein the condensation passage is divided at least two stages, and wherein the multistage bath condenser-reboiler further comprises: a gas header which is provided at the top of each stage of the condensation passage to supply the gas into the condensation passage of each stage; condensation inlet flow channels which introduce the gas supplied in the gas header into the condensation passage; a liquid header which is provided at the bottom of each stage of the condensation passage, and collects liquid generated by condensation of the gas in the condensation passage, and condensation outlet flow channels which flow out the liquid generated by condensation into the liquid header.