Patent · US Active

Method for producing hydrogen cyanide

US11897781B2 · kind B2 · utility

0Cited by

21References

16Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Martin Steurenthaler · Singapore, SG
Martin Steffan · Darmstadt, DE
Thomas Muller · Bad Homburg vor der Höhe, DE
Manfred Bäuml · Brühl, DE

Key dates

Filing date	Sep 26, 2017
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Jul 10, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/247
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a method for producing hydrogen cyanide by passing a feed mixture comprising ammonia and methane through reaction tubes, coated on the inner surface with a catalyst comprising platinum, at a reaction temperature of 1000° C. to 1400° C., operated for a time period of at least 100 h, the concentration difference between the ammonia concentration and the methane concentration in the product gas mixture is maintained in a range of from 1.05 % by volume to 3.0% by volume for at least 80% of the time.

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