Process for introducing a powder with catalytic activity into a fluidized-bed polymerization reactor
US4774299A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Apr 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/919
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Device and process for introducing a powder with catalytic activity into a fluidized bed polymerization reactor (1), the said device comprising: PA0 a storage enclosure (2) for powder with catalytic activity, provided with a feed line (3) for powder with catalytic activity and a shut-off valve (26), this enclosure being connected to a metering device (4) making it possible to deliver periodically a given volume of powder with catalytic activity, PA0 an intermediate chamber (5), placed below the metering device to receive direct the powder delivered by the latter, this intermediate chamber comprising in its upper part a tube (6) bringing in an inert carrier gas, provided with a shut-off valve, PA0 piping for conveying the powder (8) connecting the bottom part of the intermediate chamber to the fluidized-bed reactor, this piping having a portion which is more or less horizontal, the said powder conveying piping being provided with a full-bore rapid-opening valve (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.