C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/263
C10G 21/02 (2006.01) C10G 21/00 (2006.01)
Patent
CA 1169012
A B S T R A C T PROCESS FOR THE SIMULTANEOUS SEPARATION IN AROMATICS AND NON-AROMATICS OF A HEAVY HYDROCARBON STREAM AND A LIGHT HYDROCARBON STREAM A process for the simultaneous separation in aromatics and non-aromatics of a heavy hydrocarbon stream and a light hydro- carbon stream in which process: a) aromatics are extracted in a first extractor from the heavy hydrocarbon stream with the aid of a selective solvent which has a higher boiling point than that of said light hydrocarbon stream, b) selective solvent is removed from the raffinate obtained from said first extractor, to yield non-aromatics ex-heavy hydrocarbon stream, c) aromatics are extracted from the light hydrocarbon stream in a second extractor with the aid of the extract phase ob- tained from the first extractor, d) selective solvent is removed from the raffinate obtained from said second extractor to yield aromatics ex-heavy hydrocarbon stream and non-aromatics ex-light hydrocarbon stream, e) the extract phase from the second extractor is subjected to extractive distillation, f) the bottom fraction of the extractive distillation is separated by distillation in aromatics ex-light hydrocarbon stream and selective solvent, and g) the selective solvent obtained in step f is at least partially recycled to the first extractor.
383243
Shell Canada Limited
Smart & Biggar
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