| 摘要 |
PURPOSE:To make it possible to remove the heat of polymerization without decreasing the capacity of a cooling and condensation section for a long time, by cooling the path of a stream of an evaporated vapor to the cooling and condensation section and spraying a nonvolatile matter-free liquid over the vapor in the polymerization of a 2-8Calpha-olefin in the presence of a liquid phase. CONSTITUTION:In the production of a polyolefin by reacting a 2-8Calpha-olefin (e.g., ethylene or butene-1) in the presence of a liquid phase, part of the liquid phase is evaporated in a reaction vessel 1 and the evaporated vapor is sent through a path 4 to a cooling and condensation section 2. The liquid formed by cooling and condensation is returned through a line 12 to the reaction vessel. The path 4 is cooled by a cooling jacket 14 and a nonvolatile matter-free liquid 8 is sprayed from a spray nozzle 9 over the vapor. Even when the operation is continued for a long time, the heat of polymerization can be removed without decreasing the cooling capacity of the cooling and condensation section 2.
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