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Patent Agency Ranking
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
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.
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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
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.
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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
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.
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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
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.
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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
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.
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