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:
Oct. 17, 1989
Filed:
Apr. 01, 1988
Carlo Rescalli, San Donato Milanese, IT;
Riziero Ricci, Cortemaggiore, IT;
Adriano Scazzosi, Corbetta, IT;
Flavio Cianci, San Donato Milanese, IT;
Snamprogetti S.p.A., Milan, IT;
Abstract
A process is disclosed for the dehydration of a mixture of methanol and higher alcohols, containing 20 to 80% by weight of methanol, 1 to 60% by weight of at least a higher alcohol selected from those containing from 2 to 10 carbon atoms, 1 to 50% by weight of water and 0.1 to 10% by weight of hydrocarbons and/or of oxygen-containing organic compounds different from alcohols, which process comprises the following steps: p0 (a) feeding to a first rectification tower the mixture of methanol and higher alcohols to be dehydrated, a gaseous stream being discharged from the tower head, which contains a portion of the hydrocarbons and/or of the oxygen-containing organic compounds different from the alcohols; from a side point at a level higher than 2/3 of the tower height, a stream containing methanol and possibly ethanol being drawn; and from the tower bottom a stream being obtained with a methanol, and possibly ethanol, and having a content not larger than 10% by weight;