Gas collection method and apparatus therefor

Abstract

A liquid film is formed on the surface of a porous body provided with a hydrophobic layer and hydrophilic layer, by moving thereon an ionic liquid having a selective absorption capacity of specific gas, and the specific gas within the gas to be processed is absorbed into the liquid film by bringing pressurized gas to be processed into contact with the liquid film. The specific gas is, for example, a carbon dioxide gas and the ionic liquid is, for example, an imidazolium salt. The specific gas absorbed into the liquid film is passed through the porous body by the use of a difference in pressure, whereby it is collected on a low pressure side. The specific gas absorbed into this collected liquid is then separated into a gas and a liquid by a separator, and the specific gas is released and collected.

Dependencies are inferred from the claim text.