Process for preparing unsaturated nitriles from alkanes
US4609502A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1985 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Feb 14, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Unsaturated nitriles, particularly acrylonitrile, are produced in a process which integrates dehydrogenation of an alkane, particularly propane, to the corresponding olefin, followed by ammoxidation of the olefin in the dehydrogenation reactor effluent to the corresponding nitrile. After recovery of the nitrile product, the residual gases are processed to remove hydrogen, oxygen, and carbon oxides, after which the gases are recycled to the dehydrogenation reactor. By operating with relatively low conversion of olefin to nitrile in each pass, the overall efficiency of the process is improved despite the need to recirculate substantial amounts of unreacted hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.