Process and apparatus for separating diluent from polymer solids
US6838531B2 · kind B2 · utility
28Cited by
12References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Sep 15, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer solids are maintained in an intermediate pressure zone for a desired polymer solids residence time and then transferred to a purge zone or other lower pressure zone. An increase in the polymer solids residence time in the intermediate pressure zone allows more diluent to flash or separate, thereby avoiding or reducing the need for a low pressure flash zone. A fluff chamber may be disposed between the intermediate pressure zone and a lower pressure zone transporter tank may be used to transport polymer solids after the intermediate pressure zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.