| 摘要 |
<p>The invention provides a process for removing contaminant from a feed stream having a temperature of less than -40 °C and a pressure of less than 110 bara, which feed stream comprises a liquid phase or a liquid phase and a gaseous phase, wherein the liquid phase comprises liquid phase contaminant and the gaseous phase, if present, comprises a gaseous product and gaseous contaminants, the process comprising: 1) providing the feed stream; 2) lowering the temperature and optionally the pressure of the feed stream to obtain a stream having a temperature between -50 and -85 °C and optionally a pressure between 30 and 80 bara; 3) cooling the stream as obtained in step 2) further to a temperature at which a slurry is formed which comprises a gaseous phase rich in gaseous product, solid phase contaminant and optionally liquid phase contaminant; 4) introducing the slurry obtained in step 3) into a gas/liquid/solids separation device; and 5) removing from the separation device a gas stream rich in gaseous product and a stream comprising solid contaminant and optionally comprising liquid phase contaminant, wherein the solid contaminant, liquid phase contaminant and gaseous contaminants are carbon dioxide and/or hydrogen sulphide.</p> |
