气相聚合反应器中的水动力学研究
Polyolefins are polymers produced from olefins such as ethylene and/orpropylene. Although polyolefins can be produced via different productionmethods, the gas-phase polymerization process based on fluidizedbed reactor technology is the most important method for the productionof polyethylene since the 1980’s and also polypropylene is increasinglyproduced via the gas-phase polymerization process. Although fluidizedbed reactors have been employed for several decades in the chemicalindustry, quantitative information on solids motion and macroscopiccirculation patterns is still incomplete.