System for collecting and refining SF6 gas and method therefor

摘要

SF6 gas is collected from the inside of a gas insulated machine during maintenance and inspection and is refined. Compositions of the refined SF6 gas are analyzed and confirmed to be reusable at the site. In the process of SF6 gas collecting and refining, acidic gases are neutralized and removed by a dry method using filters and the refined SF6 gas is collected in a collecting tank. In particular, after the refining, the composition of the collected SF6 gas is measured and confirmed by analysis equipment to quantitatively confirm whether or not the refined SF6 gas is reusable.