METHOD FOR OBTAINING PURE AROMATIC COMPOUNDS FROM HYDROCARBON FRACTIONS CONTAINING AROMATIC COMPOUNDS

WIPO Patent Application WO/2010/102712

A3

The invention relates to a method for obtaining a pure product which contains aromatic compounds. The pure product is obtained by extractive distillation of a benzene which is rich in aromatic compounds, and olefins, diolefins and polyolefins being removed. The extractive distillation is followed by hydration of the resulting product stream which is rich in aromatic compounds and low in olefins, the alkylated aromatic compounds, especially toluol and xylols being dealkylated, and the paraffinic dealkylation products being reacted to give methane so that due to the nature of the hydration step after the extractive distillation the amount of hydrogen can be considerably reduced since the mixture of aromatic compounds is free of olefins and no hydrogen is required for olefin hydration. The invention also relates to a device for carrying out said method, preferably a column being used for extractive distillation which column allows an extractive distillation with solvent recirculation, thereby eliminating the need for an additional stripping column for removing the extracted solvent.

DIEHL THOMAS (DE)
GEHRKE HELMUT (DE)
KOLBE BAERBEL (DE)
WILKEN DIETER (DE)

PCT/EP2010/001024

November 04, 2010

February 18, 2010

Click for automatic bibliography generation  

UHDE GMBH (DE)
DIEHL THOMAS (DE)
GEHRKE HELMUT (DE)
KOLBE BAERBEL (DE)
WILKEN DIETER (DE)

B01D3/34; C10G7/08; C07C15/02; C10G45/58; C10G47/02; C10G47/22

GB1174279A	1969-12-17
US3304340A	1967-02-14
US3862254A	1975-01-21

UHDE GMBH (Dortmund, DE)

View/Download PDF      PDF Help

Previous Patent: AUXILIARY-RANGE TRANSMISSION DEVICE

Next Patent: LINEAR GENERATOR AND WAVE ENERGY PLANT