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PROCESS FOR THE SEPARATION OF C IN2 XX HYDROCARBONS FROM NATURAL GAS
PROCESS FOR THE SEPARATION OF C IN2 XX HYDROCARBONS FROM NATURAL GAS
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机译：从天然气中分离C IN2 XX烃的方法
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"PROCESS FOR THE SEPARATION OF C2+ HYDROCARBONSFROM NATURAL GAS"Abstract of the DisclosureA process for the separation of C2+ hydrocarbons fromnatural gas under pressure wherein the natural gas iscooled (2, 6), partially condensed, and separated (9) intoa liquid fraction and a gaseous fraction. The liquid frac-tion (10) is subcooled (11) and then expanded into theupper zone of a rectifying column (7). The gaseous frac-tion (23), after engine expansion (25), is also introducedinto the rectifying column (7). During rectification, aproduct stream (37) containing essentially C2+ hydrocarbonsand a residual gas stream (22) containing predominantlylower-boiling components are obtained. The residual gasstream (22) is initially heated by heat exchange (11) withthe liquid fraction (10) and then heated by heat exchange(21) with the gaseous fraction obtained after partial con-densation. The residual gas stream is then further heated(6, 2) by heat exchange with the feed stream of natural gasto be partially condensed. The heated residual gas is thenengine expanded (28) and reheated again by heat exchangewith the feed stream of natural gas to be partiallycondensed (2).
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