Polymerization device and method for producing polyolefin elastomer

The invention provides a polymerization device and method for producing a polyolefin elastomer, and the polymerization device comprises a first-stage tank reactor (105), and also comprises a tubular reactor (110) arranged at the downstream of the first-stage tank reactor (105). According to the polymerization device for producing the polyolefin elastomer and the corresponding polymerization method, the conversion rate of raw materials can be increased, and the production capacity of the polymerization device can be improved; polymerization reaction heat can be effectively removed, the temperature distribution in the tank reactor is strictly controlled, and the high activity of the catalyst is ensured; the polymer content of the outlet material of the reactor is increased, the energy consumption of subsequent separation procedures such as devolatilization and rectification is reduced, and the production cost is reduced; and the coking of the polymer on the inner wall of the tubular reactor is slowed down. 本发明提