The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1989
Filed:
Feb. 12, 1987
Alain Marsaly, Gignac la Nerthe, FR;
Andre Martens, Chateauneuf les Martigues, FR;
Frederic R Morterol, Sausset-les-Pins, FR;
Charles Raufast, Saint Julien les Martigues, FR;
BP Chemicals Limited, London, GB;
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.