| 摘要 |
<p>The method of recovery and recycling of inert gases, especially noble gases, from processes such as vacuum furnaces and other applications. A first gas stream comprising the inert gas and oxidisable impurities, is supplied to an oxidation column comprising a metal oxide. The impurities in the first gas stream are oxidised in the column in the presence of the metal oxide to form a second gas stream containing carbon dioxide and water, the second gas stream is supplied to a regenerable carbon dioxide removal column; the carbon dioxide is removed from the second gas stream in the column to form a third gas stream. Water is removed from the third gas stream in an absorption column, and the exhausted, purified inert gas is collected from the absorption column for conveying to a process utilising the inert gas. The recovered gas stream is of around 6N purity (99.9999% pure) i.e. having 1 ppm total contaminants.</p> |
