Gas separation membrane operation method
AssigneeLotte Chemical Corporation
InventorsSang Jung Lee, Sang A Nam, Myung Wook Kim
Life of this patent
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Abstract
The present invention relates to a gas separation membrane operation method. The method may include (a) introducing an external gas into a separation membrane module through an inlet line, (b) separating, by the separation membrane module, the external gas into a permeable gas and an impermeable gas according to permeability with respect to a separation membrane, transferring the permeable gas to the separation line, and transferring the impermeable gas to the outflow line, and (c) injecting at least a part of the impermeable gas transferred to the outflow line into an inlet of the separation membrane module.
Claims4
A gas separation membrane operation method comprising:
- (a) introducing an external gas into a separation membrane module through an inlet line connected to an inlet of the separation membrane module;
- (b) separating, by the separation membrane module, the external gas into a permeable gas and an impermeable gas according to permeability with respect to a separation membrane, transferring the permeable gas to a separation line connected to a lateral surface of the separation membrane module, and transferring the impermeable gas to an outflow line connected to a side of the separation membrane module opposite the inlet;
- (c) storing at least a part of the impermeable gas transferred to the outflow line in a cleaning tank connected to the outflow line;
- and
- (d) cleaning the separation membrane module by injecting the impermeable gas stored in the cleaning tank into the inlet of the separation membrane module through a cleaning line, wherein the cleaning line has one side connected to the cleaning tank and the other side connected to a lateral portion of the inlet line.
Dependencies are inferred from the claim text.