Feed purification at ambient temperature
US6987152B1 · kind B1 · utility
22Cited by
67References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for olefin polymerization is provided. A feed stream comprising more than 0.1 ppm by volume of oxygen and 0.3 ppm by volume of water is passed through a first packed bed to selectively remove at least a portion of the oxygen. The feed stream is then passed through a second packed bed to selectively remove at least a portion of the water, providing a purified feed stream comprising less than 0.1 ppm by volume of oxygen and 0.3 ppm by volume of water. Both the first and second packed beds operate at a temperature of from about 0° C. to about 50° C. The purified feed stream is then passed to a polymerization reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.