Patent ID: 9139509
Filing Date: 2015-09-22
Classification: C07C,Y02P

Abstract:
1. A method of removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which production 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, the method comprising the steps of: (a) diverting all or a portion of the recovered, non-nitrated aromatic reactant to form a stream comprising non-nitrated aromatic reactant with non-aromatic impurities; and (b) subjecting the stream comprising non-nitrated aromatic reactant formed in step (a) to nitration to produce a first stream comprising nitrated aromatic product with non-aromatic impurities.