The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2010
Filed:
Oct. 11, 2002
Wilfried Borgmann, Baierbrunn, DE;
Josef Kunkel, Gauting, DE;
Helmut Fritz, Munich, DE;
Gerhard Lauermann, Bad Tolz, DE;
Roland Walzl, Feldafing, DE;
Klaus Muller, Kirchseeon, DE;
Wilfried Borgmann, Baierbrunn, DE;
Josef Kunkel, Gauting, DE;
Helmut Fritz, Munich, DE;
Gerhard Lauermann, Bad Tolz, DE;
Roland Walzl, Feldafing, DE;
Klaus Muller, Kirchseeon, DE;
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method is described for processing an olefin-containing product stream () that contains, besides ethylene and propylene, longer-chain olefins and compounds of hydrocarbons with oxygen (oxygenates). Such a product stream (I) can occur in particular in olefin synthesis from methanol. The product stream is dewatered in successive process steps, optionally compressed in several steps and dried. Then it is subjected to fractionation. For removal of the undesired oxygenates it is proposed that the oxygenates be washed out of the gaseous product stream after the compression steps and before the drying step in a column () with methanol.