Vent gas purge optimizer for slurry loop polyethylene reactors
US11596918B2 · kind B2 · utility
0Cited by
8References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 20, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Jun 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for minimizing the amount of catalyst inactivating agent that is present in a liquid fraction recovered from a slurry-based polymer production process, the liquid fraction comprising diluent used in the polymer production process, is disclosed. The method includes steps for controlling the pressure over the liquid fraction collected during diluent recovery so as to minimize the concentration of catalyst inactivating agent that is retained in the recovered liquid fraction. Embodiments of apparatus suitable for conducting the disclosed method are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.