C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
202/77
C07C 7/08 (2006.01) C07C 7/00 (2006.01) C07C 7/04 (2006.01) C10G 7/08 (2006.01) C10G 21/00 (2006.01)
Patent
CA 1184145
ABSTRACT OF THE DISCLOSURE Disclosed is a method for recovering pure aromatic sub- stances from a mixture of hydrocarbons containing both aromatic and non-aromatic fractions. The input mixture is fed through an extractive stage provided with a preliminary and/or after-treat- ment distillation columns. In the preliminary and/or after- treatment stage the aromatics-containing product is treated at a pressure up to 20 bar and a temperature up to 300°C. The pressure is adjusted to a value at which the operational temper- ature of the preliminary and/or after-treatment stage is higher than the pressure and temperature in the extractive stage and the heat of the vapors discharged from the preliminary and/or after-treatment stages is used for heating the extractive stage. -1-
410557
Emmrich Gerd
Preusser Gerhard
Schneider Hans-Christoph
Schulze Martin
Fetherstonhaugh & Co.
Krupp-Koppers G.m.b.h.
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