Ultrasonic catalyst feed for fluid bed olefin polymerization
US6150478A · kind A · utility
5Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
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.