| 摘要 |
The invention refers to a continuous polymerization of olefines in fluidized bed with gas especially ethylene, propylene or mixtures of these with other alpha-olefines in which the recirculation gas that contains the monomer used for fluidizing the bed is made to pass through a separator. The separator is loaded with, and is maintained at least partially full of, liquid. The catalyst particles and/or dragged polymers are separated from the recirculation gas in the separator and these separated particles are maintained in suspension in the liquid of the separator. The recirculation current can cool until condensating at least part of the liquid hydrocarbons; the condensated liquid which can be a monomer or an inert liquid is separated from the recirculation gas in the separator and is directly fed to the bed for producing the cooling by the latent vaporization heat. The process reduces the incrustations in the separator.
|
