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

Claim 18:
19. A gas separation device comprising:
a separation unit that comprises an adsorption tower, and separates a first gas component and a second gas component from a 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 when
a flow rate meter provided in the first supply pipe is denoted by A
a densitometer that is provided in the first supply pipe and measures the concentration of the first gas component is denoted by B
a densitometer that is provided in the first supply pipe and measures the concentration of the second gas component is denoted by C
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 is denoted by D, 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 is denoted by E,
the gas component information acquisition device is made of at least one selected from the group consisting of:
a combination of A, and at least one of B and C;
a combination of A, and at least one of D and E; and
a combination of D and E, and
wherein, based on each of flow rates of the first gas component and the second gas component in the discharged gas which is obtained by the gas component information acquisition device, the first flow rate controller controls a flow rate VR1 of the first introduced gas that is introduced from the first separated gas container through the first introduction pipe into the raw material gas such that a total gas flow rate S1 of a flow rate VF1 of the first gas component in the discharged gas discharged from the rare gas using facility and a flow rate VR1 of the first introduced gas introduced into the raw material gas from the first separated gas container through the first introduction pipe is constant, and the second flow rate controller controls a flow rate VR2 of the second introduced gas that is introduced from the second separated gas container through the second introduction pipe into the raw material gas such that a total gas flow rate S2 of a flow rate VF2 of the second gas component in the discharged gas discharged from the rare gas using facility and a flow rate VR2 of the second introduced gas introduced into the raw material gas from the second separated gas container through the second introduction pipe is constant.