Process for starting-up an ethylene oxide reactor
US5155242A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00548
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a process for starting up a fixed bed ethylene oxide reactor containing a supported silver catalyst promoted with one or more alkali metal promoter(s) which involves heating the reactor to slightly below normal operating conditions, passing an ethylene containing gas over the catalyst, adding a chlorohydrocarbon moderator to the gas passing over the catalyst and after approximately 0.1-5 milliliters of moderator (basis liquid) per cubic foot of catalyst has been added, then adding oxygen to the gas passing over the catalyst to initiate the ethylene oxidation reaction and subsequently raising the reactor temperature and gas flow rates to operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.