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:
Sep. 22, 2015
Filed:
Feb. 17, 2011
Alfred A. Guenkel, Vancouver, CA;
Sergio Berretta, Vancouver, CA;
Alfred A. Guenkel, Vancouver, CA;
Sergio Berretta, Vancouver, CA;
NORAM INTERNATIONAL LIMITED, Dublin, IE;
Abstract
A method and apparatus for removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which process an aromatic reactant is nitrated () to produce a nitrated aromatic product using a molar excess of the aromatic reactant, and non-nitrated aromatic reactant is recovered () from the produced nitrated aromatic product and is recycled () for use in the nitration production process. A portion of the removed excess non-nitrated aromatic reactant is diverted () and subjected to nitration (). The nitrated stream may be further processed by separating out the spent acids () and the non-aromatic impurities (). These streams may be sent () to a suitable location in the nitration production train.