Method for eliminating nitriding during acrylonitrile production
US5256810A · kind A · utility
8Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for substantially eliminating, preferably completely eliminating of nitride formation on feed conduits for fluid bed catalyst reactors used in the manufacture of unsaturated nitriles from corresponding olefins, NH.sub.3 and oxygen comprising maintaining the temperature of the ammonia inside the conduit below its dissociation temperature and/or maintaining the temperature of the inside surface of the conduit below the temperature at which any monoatomic nitrogen can react with the conduit to form a nitride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.