Patent · US Expired

Breakdown of waste waters containing aromatic nitro compounds

US5232605A · kind A · utility

30Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Karl Baur · Baierbrunn, DE
Toni Dockner
Ulrich Kanne · Bischofswerda, DE
Thomas Papkalla · Mannheim, DE

Key dates

Filing date	Feb 28, 1992
Grant date	Aug 3, 1993
Priority date	—
Expiry date	Feb 28, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/909
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A process for breaking down aromatic nitro compounds in waste waters from plants for the production of nitrobenzene by treatment with nitric acid is carried out at from 180.degree. to 350.degree. C. and under a pressure of from 40 to 250 bar.

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