Detection of anomalies in gas fluidized bed polymerization
US4858144A · kind A · utility
22Cited by
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13Claims
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Assignee
Inventors
Key dates
| Filing date | Feb 12, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Feb 12, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00191
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for detecting anomalies in a fluidized bed, e.g. the incidence of agglomeration in gas-fluidized bed polymerization, comprises sensing and converting into electrical signals the pressure at one level, or the pressure difference between two or more levels in the reactor, processing these signals by computer to produce a pressure spectrum and comparing with a reference spectrum obtained in the absence of anomalies. The device comprises one or more pressure sensors 11,12,13, which measure the pressure at various levels in the reactor 1, and a computer 27.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.