Manufacturing method of hetero fuzzy propylene polymerization material

摘要

PROBLEM TO BE SOLVED: To provide a polyolefin production system reducing gel included in a molded body made of the obtained polyolefin and also capable of stably, continuously producing polyolefin, a method for producing polyolefin, and a method for producing a heterophasic propylene polymerization material.SOLUTION: Provided is a polyolefin production system (1) comprising: a cylindrical part elongating to a vertical direction; a diameter reduction part formed at the cylindrical part, and in which the inside diameter is made smaller as it goes to the lower part and also the lower edge is provided with an opening for gas introduction; jet flow layer type olefin polymerization reaction regions (25) surrounded by an inner surface of the diameter reduction part and an inner surface of the cylindrical part above the diameter reduction part, and in which a jet flow layer is formed; and a fluid bed type olefin polymerization reaction region connected to the latter part of each jet flow layer type olefin polymerization reaction region (25), and the number of the jet flow layer type olefin polymerization reaction regions (25) is three or more.SELECTED DRAWING: Figure 1