| 摘要 |
PROBLEM TO BE SOLVED: To provide a recovery apparatus and a recovery method of a nitrogen monoxide gas capable of recovering a nitrogen monoxide gas easily and efficiently.SOLUTION: An apparatus for recovering a nitrogen monoxide gas is an apparatus for recovering a nitrogen monoxide gas used for recovering a nitrogen monoxide gas as an aqueous nitric acid solution and including a nitrogen dioxide gas generation flow channel for generating a nitrogen dioxide gas by oxidizing a nitrogen monoxide gas and a nitric acid generation flow channel for obtaining an aqueous nitric acid solution by generating nitric acid based on the contact, with water, of the nitrogen dioxide gas generated within the nitrogen dioxide gas generation flow channel. A method for recovering a nitrogen monoxide gas is a method for recovering a nitrogen monoxide gas used for recovering a nitrogen monoxide gas as an aqueous nitric acid solution where a nitrogen dioxide gas is generated by oxidizing a nitrogen monoxide gas and where nitric acid is generated and recovered by contacting, with water, the generated nitrogen dioxide gas. |
