Continuous slurry polymerization volatile removal
US6926868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Jun 3, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent of a slurry loop reactor containing a flow of slurry therein, comprising a discharge conduit extending a distance into the loop reactor; the conduit having a longitudinal axis and an opening inside the loop reactor; at least a portion of the conduit being curved along its longitudinal axis inside the loop reactor; and the opening substantially facing the flow of the slurry, wherein the discharge conduit is located within a lower leg of the loop reactor such that a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank wherein volatile inert diluent and unreacted monomers are removed and the polymer solids which remain after removal of about 50 to 100% of the inert diluent therefrom to a second flash tank at a lower pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.