| abstract |
The present invention relates to an olefin polymerization method and system in the field of olefin polymerization. The method comprises: combining supported double catalysts with a series process; after performing heat exchange and gas-liquid separation on circulating airflow, introducing the obtained liquid materials into a separate first reactor to be in contact with the supported double catalysts for a polymerization reaction; then introducing reaction materials and first polyolefin generated by means of the reaction into a second reactor to continue the polymerization reaction, thereby enabling particles to circulate between the first reactor and the second reactor, so that the mixing effect of two polyolefin having distinct differences in properties is improved and the occurrence of separation phenomena is avoided, thereby facilitating producing an olefin polymer having a wide distribution of the molecular weight, good compatibility, and excellent performance. Moreover, ethylene gas is introduced into the first reactor, thereby further reducing a hydrogen/ethylene ratio, improving the molecular weight of polyethylene, and improving the product performance. |