| 摘要 |
<p>1372919 Separating gases KERNFORSCHUNGSANLAGE JœLICH GmbH 23 June 1972 [25 June 1971] 29525/72 Heading F4P A process for separating one or more inert gases from a mixture of the gas(es) with carbon dioxide, e.g. the gas mixture from combustion of irradiated nuclear fuel, comprises the steps of compressing the mixture to a pressure at which the CO 2 begins to liquefy, washing the compressed mixture with liquefied CO 2 and then rectifying the resulting solution of inert gases in CO 2 to obtain a fraction of high inert gas content. Apparatus for the process comprises a compressor 1 and heat exchanger 5 leading the mixture to the base of a scrubbing column 6, gas emerging at the top being vented to atmosphere through a valve 7. The liquid gathering at the base of column 6 is then pumped to a rectification column 9, from the top of which a fraction of high inert gas content (about 10%) is led off and passed via valve 10 to a collection vessel 11 or refluxed. The liquid CO 2 collected at the base of column 9 is pumped through a heat exchanger 13 to the top of column 6. If the gas mixture also contains a substantial quantity of another gas e.g. N 2 , a further reflux rectification column, is introduced between the columns 6 and 9, Fig. 2 (not shown).</p> |
