Method for feeding a mud-like catalyst into a polymerization reactor
US5195654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | May 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87249
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method and device for feeding a mud-like catalyst mixture into a polymerization reactor. The catalyst mixture is fed from a container into a batching space of a feeder connected thereto, from which channel the catalyst mixture is further fed by batches into the polymerization reactor by the use of the pressure of a medium fed into the feeder. In accordance with the invention, after each catalyst batch fed into the polymerization reactor, the medium is substantially removed from the batching space of the feeder by leading the medium via an outlet channel into a space between two on/off valves before filling the batching space with a new catalyst batch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.