This invention provides a method for on-line prediction of polymer properties. In a continuous polymerization reactor in which an irreversible polymerization reaction occurs, sensors provide axial temperature and pressure profile in the reactor as well as monomer flow rates and concentration for det ...
An advanced control method is disclosed for the polymerization of an alpha olefi n in a substantially horizontal, quench-cooled, stirred bed reactor.
A method and apparatus for operating a pressure vessel (25) containing a bed of particulate material (32) comprising substantially leveling the bed and employing a fluid flow distributor (52) above the bed (32).
A method and apparatus for operating a pressure vessel containing a bed of particulate material comprising substantially leveling the bed and employing a plug-flow inducer in the bed.
A method for the control of a polymerization process, which method employs the combination of a densitometer measurement of the polymerization reaction mixture and a quadratic computer model.