Ultrasonic catalyst feed for fluid bed olefin polymerization
US6365695B1 · kind B1 · utility
4Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2000 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Apr 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/919
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid catalyst composition is fed to a fluidized bed olefin polymerization reactor through an ultrasonic nozzle, enabling improved control over average catalyst composition droplet size and size distribution, which provides better control over resin particle size. The spray may be surrounded by a shroud of gas which creates a particle lean zone, thus reducing the likelihood of contact by the catalyst composition with existing product particles already suspended in the fluid bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.