Polymerization apparatus and process
US4276261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jul 16, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a solid state polymerization apparatus comprising a vertically oriented tube through which particulate resin flows downwardly in a plug flow fashion to the cone-shaped bottom portion of the reactor. The apparatus contains as an improvement a resin distribution means in the top portion thereof to distribute added resin in an orderly fashion to maintain a uniform level of polymer and also a double cone perforated gas distribution means in the bottom thereof to prevent backmixing and assure that a uniform plug flow condition is maintained as the polymer descends down the apparatus to a discharge valve at the bottom thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.