| 摘要 |
<p>Sulphur compounds are removed from gaseous carbon dioxide by contacting the carbon dioxide with water vapour in the presence of a carbonyl sulphide hydrolysis catalyst such as alumina, thereby converting carbonyl sulphide in the gas stream to hydrogen sulphide, contacting the resulting gas stream with a reducible metal oxide such as ferric oxide, thereby removing hydrogen sulphide from the gas stream as elemental sulphur, and, if desired, contacting the remaining gas stream with copper oxide, zinc oxide, a mixed copper-zinc oxide or mixtures of these, thereby removing any remaining sulphur compounds from the gaseous carbon dioxide. <MATH></p> |
