公开(公告)号：US09469703B2

公开(公告)日：2016-10-18

申请号：US14429585

申请日：2013-09-05

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Enrico Balestra ,  Tiziana Caputo ,  Maurizio Dorini ,  Antonio Mazzucco ,  Silvia Soffritti

IPC: C08F2/34 ,  C08F2/01 ,  B01J19/24 ,  C08F10/06

CPC classification number: C08F10/06 ,  B01J8/24 ,  B01J8/26 ,  B01J8/388 ,  B01J19/24 ,  B01J2208/00274 ,  B01J2208/00283 ,  B01J2208/00734 ,  B01J2219/00164 ,  B01J2219/24 ,  C08F10/00 ,  C08F210/06 ,  C08F2/34 ,  C08F2/005 ,  C08F2/001 ,  C08F210/16 ,  C08F2500/12 ,  C08F2/01

Abstract: A process and apparatus for producing olefin polymers are disclosed, comprising:a. polymerizing one or more olefins in the gas phase, in the presence of an olefin polymerization catalyst, whereby growing polymer particles flow along a cylindrically-shaped downward path in densified form under the action of gravity so as to form a densified bed of downward-flowing polymer particles b. allowing said polymer particles to flow through a restriction of the densified bed, such restriction being positioned in a restriction zone extending from the bed upward to a distance of 15% of the total height of the densified bed; and c. metering an antistatic agent through a feed line connected to the densified bed at a feed point being located in a feed zone extending from the top of the restriction upward, to a distance five times the diameter of the section of the densified bed above the restriction.

公开(公告)号：US20150232588A1

公开(公告)日：2015-08-20

申请号：US14429585

申请日：2013-09-05

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Enrico Balestra ,  Tiziana Caputo ,  Maurizio Dorini ,  Antonio Mazzucco ,  Silvia Soffritti

IPC: C08F10/06 ,  B01J19/24

CPC classification number: C08F10/06 ,  B01J8/24 ,  B01J8/26 ,  B01J8/388 ,  B01J19/24 ,  B01J2208/00274 ,  B01J2208/00283 ,  B01J2208/00734 ,  B01J2219/00164 ,  B01J2219/24 ,  C08F10/00 ,  C08F210/06 ,  C08F2/34 ,  C08F2/005 ,  C08F2/001 ,  C08F210/16 ,  C08F2500/12 ,  C08F2/01

Abstract: A process and apparatus for producing olefin polymers are disclosed, comprising:a. polymerizing one or more olefins in the gas phase, in the presence of an olefin polymerization catalyst, whereby growing polymer particles flow along a cylindrically-shaped downward path in densified form under the action of gravity so as to form a densified bed of downward-flowing polymer particles b. allowing said polymer particles to flow through a restriction of the densified bed, such restriction being positioned in a restriction zone extending from the bed upward to a distance of 15% of the total height of the densified bed; and c. metering an antistatic agent through a feed line connected to the densified bed at a feed point being located in a feed zone extending from the top of the restriction upward, to a distance five times the diameter of the section of the densified bed above the restriction.

Abstract translation: 公开了一种用于生产烯烃聚合物的方法和设备，包括：a。 在气相中聚合一种或多种烯烃，在烯烃聚合催化剂的存在下，由此生长的聚合物颗粒在致密形式的重力作用下沿着圆柱形的向下的路径流动，以形成向下流动的致密化床 聚合物颗粒b。 允许所述聚合物颗粒流过致密化床的限制，这种限制被定位在从床向上延伸到致密化床的总高度的15％的距离的限制区域中; 和c。 通过连接到致密化床的供给管线的计量抗静电剂，所述供给管线位于从限制件的顶部向上延伸的进料区域中的进料点，距离所述限制物上方的致密化床部分的直径的五倍。