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PROCESS FOR THE SEPARATION OF C IN2 XX, C IN3 XX OR C IN4 XX HYDROCARBONS
PROCESS FOR THE SEPARATION OF C IN2 XX, C IN3 XX OR C IN4 XX HYDROCARBONS
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机译：分离C IN2 XX，C IN3 XX或C IN4 XX烃的过程
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摘要
"PROCESS FOR THE SEPARATION OF C2+,C3+ OR C4+ HYDROCARBONS"ABSTRACT OF THE DISCLOSUREIn a process for the separation of C2+, C3+ or C4+hydrocarbons from a gas stream containing lighthydrocarbons and, if desired, of components boiling lowerthan methane, in which the gas stream, being under anelevated pressure, is cooled, partially condensed andseparated in a phase separator into a liquid and a gaseousfraction; the gaseous fraction is engine expanded, and theliquid fraction is fractionated by rectification into aproduct stream containing substantially C2+, C3+ or Chydrocarbons and a residual gas stream containingpredominantly lower boiling components, the improvementcomprising subjecting the gaseous fraction forming afterpartial condensation, before engine expansion thereof, toheat exchange with the engine expanded gaseous fraction,thereby cooling said gaseous fraction and separatingadditional components which condense out before the engineexpansion stage.
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