| 摘要 |
A gas treating unit that uses external refrigeration to cool a high pressure stream of natural gas condenses and separates at substantially pipeline pressures higher boiling point hydrocarbons from pipeline gas. The pipeline gas is heated by heat transfer with the refrigerant to substantially pipeline temperature and delivered to a sales gas line. The condensed higher boiling point hydrocarbons are cooled by expansion in a Joule-Thompson expansion to provide cooling for the condenser of a fractionating tower into which the condensed hydrocarbons are charged as feed for stripping volatile components therefrom to produce a liquid product of acceptable vapor pressure. Heat from the compression of the refrigerant is used to supply heat to the reboiler for the fractionating tower.
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