Cyanide and ammonia removal from synthesis gas
US6107353A · kind A · utility
15Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Feb 7, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/0485
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cyanide and ammonia are removed from a gas, such as a synthesis gas, by catalytically hydrolyzing cyanide in the gas to ammonia, water scrubbing the hydrolyzed gas to dissolve ammonia and at least a portion of remaining cyanide, and optionally, contacting the scrubbed gas with an adsorbent for cyanide and ammonia to form a clean gas containing less than 50 vppb of a combined total of cyanide and ammonia. The clean synthesis gas is then fed into a hydrocarbon synthesis reactor wherein it produces hydrocarbons with substantially reduced catalyst deactivation and cleaner hydrocarbon products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.