Patent · US Active

Method and apparatus for purifying nitration products

US9115048B2 · kind B2 · utility

2Cited by

3References

15Claims

0Family size

Assignee

JOSEF MEISSNER GMBH & CO. KG · DE

Inventors

Jürgen Pöhlmann · Cologne, DE
Heinrich Hermann · Cologne, DE
Mirko Händel · Neunkirchen, DE
Jürgen Gebauer · Geldern, DE

Key dates

Filing date	May 18, 2012
Grant date	Aug 25, 2015
Priority date	—
Expiry date	May 18, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/24
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a method for removing impurities from nitrated crude products obtained during the nitration of nitratable aromatic compounds, after removal of the final nitrating acid, by treatment with a washing medium, and also to a plant or apparatus suitable for implementing this method. Further provided by the invention is a production plant for the nitration of nitratable aromatic compounds with subsequent purification of the nitrated products.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.