| 摘要 |
A process for recovering liquefied C<SUB>3 </SUB>compounds from a natural gas stream containing C<SUB>3 </SUB>compounds which comprises (a) chilling the natural gas stream under conditions sufficient to liquefy the natural gas, whereby a mixture comprising liquid natural gas (LNG) and liquid C<SUB>3 </SUB>compounds is formed; (b) fractionating the mixture comprising liquid natural gas (LNG) and liquid C<SUB>3 </SUB>compounds in a separation zone under sub-atmospheric pressure and under conditions predetermined to vaporize a significant portion of the natural gas present while retaining the C<SUB>3 </SUB>compounds as a liquid fraction; and (c) recovering separately from the separation zone natural gas and liquid C<SUB>3 </SUB>compounds.
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