公开(公告)号：US20230001372A1

公开(公告)日：2023-01-05

申请号：US17782047

申请日：2020-12-09

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Maurizio Dorini ,  Riccardo Rinaldi ,  Silvia Soffritti ,  Giulia Mei

IPC: B01J8/18 ,  B01J8/26 ,  B01J8/00 ,  C08F10/00

Abstract: Apparatus for carrying out a catalytic gas-phase olefin polymerization having a first polymerization zone for growing polymer particles to flow upward under fast fluidization or transport conditions, a second polymerization zone for the growing polymer particles to flow downward, and a gas/solid separation zone; wherein the second polymerization zone has an upper part being connected to the separation zone and a lower part being connected to the upper part; wherein the ratio of the height H01 of the separation zone to the diameter D01 of the separation zone is 2.5 to 4.5.

公开(公告)号：US11078307B1

公开(公告)日：2021-08-03

申请号：US16967387

申请日：2019-02-04

Applicant: Basell Polyolefine GmbH

Inventor： Pietro Baita ,  Maurizio Dorini ,  Giulia Mei ,  Gerhardus Meier ,  Giuseppe Penzo ,  Riccardo Rinaldi

IPC: C08F10/02 ,  C08F2/34 ,  C08F2/01 ,  C08F10/06 ,  C08L23/08 ,  C08F2/00

Abstract: A gas-phase polymerization reactor for the gas-phase polymerization of olefins including a polymerization zone having a recycle line for (a) withdrawing reaction gas from the reactor, (b) leading the reaction gas through a heat-exchanger for cooling, and (c) feeding the reaction gas back to the reactor, wherein the recycle line has the heat-exchanger, a centrifugal compressor having variable guide vanes, and a butterfly valve, and a related process for preparing an olefin polymer in the gas-phase polymerization reactor.

公开(公告)号：US20230016760A1

公开(公告)日：2023-01-19

申请号：US17783170

申请日：2020-12-09

Applicant: Basell Polyolefine GmbH

Inventor： Giulia Mei ,  Giuseppe Penzo ,  Riccardo Rinaldi ,  Emanuele Azzarello ,  Rosario Pesare

IPC: B01J8/00 ,  B01J19/24

Abstract: An apparatus for carrying out a gas-phase olefin polymerization having a first polymerization zone having a cylindrical segment of diameter D01, a second polymerization zone having a cylindrical upper part of diameter D05 and a cylindrical lower part of diameter D06, a separation zone of diameter D04, a first connecting element of diameter D03, which is a bend of radius R03 or has a bend part of radius R03, a gas recycle line of diameter D08, a transition segment of diameter D02, and a second connecting element of a diameter D09, which is a bend or has a bend part, wherein the ratio D04 to D05 is 1.0 to 1.5, the ratio D05 to D06 is 1.2 to 2, the ratio R03 to D03 is 1 to 6, the ratio D03 to D01 is 0.3 to 0.85, and the ratio D08 to D02 is 1.0 to 2.2.

公开(公告)号：US20240271876A1

公开(公告)日：2024-08-15

申请号：US18568147

申请日：2022-06-07

Applicant: Basell Polyolefine GmbH

Inventor： Pier Luigi Di Federico ,  Riccardo Rinaldi ,  Gian Luca Bonaccorsi ,  Giuseppe Penzo ,  Maurizio Dorini

IPC: F28D7/16 ,  C08F2/34 ,  F28D1/053 ,  F28F1/00 ,  F28F9/02

CPC classification number: F28D7/163 ,  C08F2/34 ,  F28D1/053 ,  F28F1/006 ,  F28F2009/029

Abstract: A multitubular heat exchanger for cooling a gas stream. including an inlet chamber: a bundle of tubes encased in a shell structure: and an outlet chamber, wherein (a) each tube has an inlet with a diameter of d1: a longitudinal middle part with a diameter of d2: an outlet: and (b) d1 is larger than d2.

公开(公告)号：US20240075450A1

公开(公告)日：2024-03-07

申请号：US18256065

申请日：2021-12-07

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Maurizio Dorini ,  Riccardo Rinaldi ,  Enrico Balestra ,  Gian Luca Bonaccorsi

IPC: B01J19/24 ,  B01J4/00 ,  B01J8/18

CPC classification number: B01J19/2435 ,  B01J4/001 ,  B01J8/1854 ,  B01J19/2405 ,  B01J2204/002 ,  B01J2208/00991 ,  B01J2219/185

Abstract: A reactor for carrying out a gas-phase olefin polymerization in the presence of a polymerization catalyst, made from or containing (i) a first polymerization zone adapted and arranged for growing polymer particles to flow upward under fast fluidization or transport conditions, (ii) a second polymerization zone adapted and arranged for the growing polymer particles to flow downward, and (iii) a set of bars for introducing feedstock or a barrier stream into the reactor, wherein each bar has (a) a hollow space along the length of the bar, (b) a particle deviating top, and (c) a multiplicity of openings arranged along the bottom half of the periphery of the bar.

公开(公告)号：US20210214472A1

公开(公告)日：2021-07-15

申请号：US16967387

申请日：2019-02-04

Applicant: Basell Polyolefine GmbH

Inventor： Pietro Baita ,  Maurizio Dorini ,  Giulia Mei ,  Gerhardus Meier ,  Giuseppe Penzo ,  Riccardo Rinaldi

IPC: C08F10/02 ,  C08F2/34 ,  C08F2/01 ,  C08F2/00 ,  C08F10/06 ,  C08L23/08

Abstract: A gas-phase polymerization reactor for the gas-phase polymerization of olefins including a polymerization zone having a recycle line for (a) withdrawing reaction gas from the reactor, (b) leading the reaction gas through a heat-exchanger for cooling, and (c) feeding the reaction gas back to the reactor, wherein the recycle line has the heat-exchanger, a centrifugal compressor having variable guide vanes, and a butterfly valve, and a related process for preparing an olefin polymer in the gas-phase polymerization reactor.