Nitrogen conservation in polymerization processes
US11623176B2 · kind B2 · utility
2Cited by
67References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Jun 23, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A closed-loop nitrogen transport system including a first transfer line configured for nitrogen pressure conveyance of a polymer fluff from at least one upstream vessel to at least one downstream vessel, a second transfer line configured to return a nitrogen gas stream comprising primarily nitrogen from the at least one downstream vessel to the at least one upstream vessel, a conveyor blower operable to provide flow throughout the closed loop, and a treatment unit operable to remove hydrocarbons from at least a portion of the nitrogen gas stream comprising primarily nitrogen, to provide a purified nitrogen stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.