GAS-PHASE POLYMERIZATION APPARATUS

摘要

In order to discharge the gas, which enters together with powder polymer through a polymer discharge pipe from a gas-phase polymerization vessel into a sedimentation tank, from the sedimentation tank, the sedimentation tank is connected by a gas discharge pipe to the portion of the lower pressure than the pressure in the sedimentation tank of a gas-phase circulation system for circulating the gas between the outside and inside of the gas-phase polymerization vessel, so that the mass of powder is not formed in the gas discharge pipe connecting the gas-phase polymerization vessel and the sedimentation tank.