UTILIZATION OF PNEUMATIC ATOMIZATION NOZZLES IN THE SPRAY CRYSTALLIZATION OF POLYOLEFIN CATALYST CARRIERS

Spray crystallization technology is utilized to obtain the desired pro perties of the catalyst carrier in the polyolef in catalyst preparatio n process. The morphological properties of the catalyst carrier refer to the morphological properties of the final polymer product, which is known as the replica effect. This article examines the particle size distribution and Sauter mean diameter of the sprayed catalyst carrier, and the Ziegler-Natta catalyst carrier in particular. The effect of d ifferent pneumatic nozzles, process conditions in atomization, and the physical properties of the carrier melt were studied experimentally. A simulation model for the sauter Mean Diameter (SMD) of the carrier s pray was produced. The most important variables in catalyst carrier at omization were identified for pneumatic nozzles. Particles less than 5 0 mum diameter are easy to produce by this spraying technology. They a re spherical or oval in shape and have good flowability properties.