Polymerization catalyst delivery
US10179826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2017 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | May 5, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00752
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is described for introducing a catalyst into a polymerization zone by detecting one or a combination of (i) a change in a concentration of the catalyst in a catalyst feed stream upstream of the polymerization zone, (ii) a change in a concentration of monomer in the polymerization zone, and (iii) a change in a polymer production rate of the polymerization zone, adjusting a first catalyst flow rate of the catalyst in the catalyst feed stream to a second catalyst flow rate based on the one or a combination of (i), (ii), and (iii), and introducing the catalyst into the polymerization zone downstream of a location in the catalyst feed stream where the step of adjusting is performed. A catalyst injection system for carrying out such a process is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.