Combined process of pulse feeding of catalyst free of inert solvent and propene continuous prepolymerization

The integrated technique for pulse charging and continual pre-polymerization without inert solvent and catalyst comprises mainly: (1) dipping the catalyst in liquid-phase propylene, pulse adding the main catalyst particle into kettle with propylene based on deposition-clear principle; (2) the complete mixing kettle can disperse the catalyst rapidly; (3) decreasing the concentration of main catalyst, enlarging pre-polymerization temperature range; (4) thekettle can be arranged by itself or in the lower vertical device. this invention saves cost, decreases post-treatment load, and benefit to security and environmental friendly.