CO2 separation system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKouseki Sugiyama
Life of this patent
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Abstract
A CO2 separation system configured to separate CO2 from mixed gas containing CO2 includes a CO2 separator, a CO2 collector, and a pressure difference generator. The CO2 separator includes a separation membrane configured to separate the CO2 from the mixed gas, and a separation-membrane upstream chamber and a separation-membrane downstream chamber demarcated by the separation membrane. The CO2 separator is disposed to cause the mixed gas to flow into the separation-membrane upstream chamber. The pressure difference generator includes at least a negative pressure generator. The negative pressure generator is disposed on a gas path of the permeating gas that connects the separation-membrane downstream chamber and the CO2 collector.
Claims6
A CO2 separation system configured to separate CO2 from mixed gas containing the CO2, the CO2 separation system comprising:
- a CO2 separator including
- a separation membrane configured to separate the CO2 from the mixed gas, and
- a separation-membrane upstream chamber and a separation-membrane downstream chamber demarcated by the separation membrane,
- the CO2 separator being disposed to cause the mixed gas to flow into the separation-membrane upstream chamber;
- a CO2 collector configured such that permeating gas that contains the CO2 is introduced into the CO2 collector, the CO2 collector being configured to collect the CO2 in the permeating gas, and the permeating gas being gas that has permeated the separation membrane and flowed out of the separation-membrane downstream chamber;
- and
- a pressure difference generator configured to generate a pressure difference between the separation-membrane upstream chamber and the separation-membrane downstream chamber such that a pressure in the separation-membrane upstream chamber is higher than a pressure in the separation-membrane downstream chamber;
- a dehumidifier configured to dehumidify the permeating gas;
- and
- a heater, wherein:
- the pressure difference generator includes at least a negative pressure generator;
- the negative pressure generator is disposed on a gas path of the permeating gas that connects the separation-membrane downstream chamber and the CO2 collector;
- the dehumidifier and the negative pressure generator are disposed on the gas path of the permeating gas in order of the dehumidifier and the negative pressure generator from an upstream side in a flow direction of the permeating gas;
- the dehumidifier is configured to dehumidify the permeating gas by cooling the permeating gas through heat exchange with a heating medium and condensing moisture in the permeating gas;
- and
- the heater is configured to heat the CO2 collector by using heat of the heating medium that is received through the heat exchange with the permeating gas.
Dependencies are inferred from the claim text.