Patent ID: 11925896
Assignee: TAIYO NIPPON SANSO CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 3:
4. A gas separation method in which a first gas component and a second gas component are separated from a raw material gas containing a plurality of gas components using a gas separation device,
wherein the gas separation device includes:
a separation unit that comprises an adsorption tower, and separates the first gas component and the second gas component from the raw material gas containing a plurality of gas components by pressure adsorption;
a raw material gas container that stores the raw material gas;
a first supply pipe that supplies a discharged gas discharged from a rare gas using facility into the raw material gas container;
a second supply pipe that connects the raw material gas container and the separation unit;
a first separated gas container that stores the first gas component separated by the separation unit;
a second separated gas container that stores the second gas component separated by the separation unit;
a first introduction pipe that introduces the first gas component in the first separated gas container as a first introduction gas into the raw material gas;
a second introduction pipe that introduces the second gas component in the second separated gas container as a second introduction gas into the raw material gas;
a first flow rate controller that is provided in the first introduction pipe;
a second flow rate controller that is provided in the second introduction pipe;
a gas component information acquisition device that acquires information of the first gas component and the second gas component which flow through the first supply pipe; and
an arithmetic device that is electrically connected to each of the first flow rate controller, the second flow rate controller, and the gas component information acquisition device,
wherein the gas component information acquisition device comprises:
a receiver that electrically receives from the rare gas using facility the flow rate information of the first gas component discharged from the rare gas using facility; and
a receiver that electronically receives from the rare gas using facility the flow rate information of the second gas component discharged from the rare gas using facility,
wherein the gas separation method comprises an introduction step in which the first gas component separated from the raw material gas is introduced as a first introduced gas into the raw material gas, and the second gas component separated from the raw material gas is introduced as a second introduced gas into the raw material gas, and
wherein, based on each of flow rates of the first gas component and the second gas component in the discharged gas, which are obtained by the gas component information acquisition device in the introduction step, each of total gas flow rate S1 and total gas flow rate S2 as shown below is controlled to be constant,
Total gas flow rate S1: total of a flow rate VF1 of the first gas component in the discharged gas and the flow rate VR1 of the first introduced gas
Total gas flow rate S2: total of a flow rate VF2 of the second gas component in the discharged gas and the flow rate VR2 of the second introduced gas.