Patent · US Active

Removal of laughing gas in nitric acid production

US7906091B2 · kind B2 · utility

3Cited by

4References

12Claims

0Family size

Assignee

UHDE GMBH · DE

Inventors

Meinhard Schwefer · Meschede, DE
Rainer Maurer · Schwelm, DE
Thomas Turek · Boston, US

Key dates

Filing date	Jan 9, 2001
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Jul 12, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/151
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and device for removal of N2O in nitric acid production are disclosed. The device is arranged after a heat exchanger, post ammonia burning, before the absorption tower and contains a catalyst, which essentially comprises one or several iron loaded zeolites.

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