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公开(公告)号：EP1778392B1
公开(公告)日：2010-09-08
申请号：EP05762273.0
申请日：2005-07-04
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： MICHIELIN, Luciano , DORINI, Maurizio , PENZO, Giuseppe , RINALDI, Riccardo
CPC classification number: B01J8/002 , B01J8/003 , B01J8/1809 , B01J8/20 , B01J19/2435 , B01J2208/00539 , B01J2208/00761 , Y10S526/901
Abstract: A method of discharging polymer from a continuously operated polymerization reactor, wherein at least a monomer is polymerized to form polymer particles, the method comprising adjusting the discharge rate of the polymer particles by means of a piston valve having a piston element connected to an actuator, said actuator being able to modulate the piston stroke inside said piston valve.
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公开(公告)号：EP2281010B1
公开(公告)日：2013-03-20
申请号：EP09753799.7
申请日：2009-05-15
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： RINALDI, Riccardo , MAZZUCCO, Antonio , BALESTRA, Enrico , PENZO, Giuseppe , DORINI, Maurizio , MEI, Gabriele
CPC classification number: B01J19/2435 , B01J19/2465 , B01J2219/00087 , C08F10/00 , C08F110/02 , C08F110/06 , Y10S526/901 , C08F2/34 , C08F2/001 , C08F2/01 , C08F2500/05 , C08F2500/15
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公开(公告)号：EP2475690A1
公开(公告)日：2012-07-18
申请号：EP10749834.7
申请日：2010-08-27
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： MAZZUCCO, Antonio , CAPUTO, Tiziana , RINALDI, Riccardo
IPC: C08F10/00
CPC classification number: C08F210/06 , C08F110/06 , C08F2/005 , C08F2/34 , C08F2/001 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F210/16
Abstract: A process for the gas-phase polymerization of one or more alpha-olefms in the presence of a polymerization catalyst, the process comprising: - at least a polymerization step wherein the polymer particles flow downward in densified form under the action of gravity so as to form a densified polymer bed; - metering an anti-fouling agent in said polymerization step by means of at least N feeding lines placed at different heights of said densified polymer bed, N being the integer number satisfying the equation N> (1+0.08 % H), where H is the height (expressed in meters) of the polymer bed.
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Patent Agency Ranking
公开(公告)号：EP2190889A1
公开(公告)日：2010-06-02
申请号：EP08787527.4
申请日：2008-08-27
Applicant: Basell Poliolefine Italia S.R.L.
Inventor： DORINI, Maurizio , PENZO, Giuseppe , RINALDI, Riccardo
CPC classification number: B01J8/1809 , B01J19/2435 , B01J2208/00212 , B01J2208/0061 , B01J2219/0004 , C08F10/06 , C08F110/06 , C08F210/16 , C08F2/34 , C08F2/001 , C08F2500/12 , C08F210/08
Abstract: A process for the multistage polymerization of olefins in a sequence of an upstream slurry reactor and a downstream gas-phase reactor, the transfer of polymer from the upstream reactor to the downstream reactor comprising the following steps: a) heating the slurry of polyolefin particles to evaporate the liquid polymerization medium; b) separating the polyolefin particles from the obtained gaseous phase in at least a separation chamber; c) transferring the polyolefin particles to said downstream reactor by means of a couple of lock hoppers working intermittently in parallel, where one of said lock hoppers is continuously filled with the polymer coming from said separation chamber, while simultaneously the other one is continuously pressurized by means of a gas comprising the reaction mixture coming from said downstream reactor.
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公开(公告)号：EP1778392A1
公开(公告)日：2007-05-02
申请号：EP05762273.0
申请日：2005-07-04
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： MICHIELIN, Luciano , DORINI, Maurizio , PENZO, Giuseppe , RINALDI, Riccardo
CPC classification number: B01J8/002 , B01J8/003 , B01J8/1809 , B01J8/20 , B01J19/2435 , B01J2208/00539 , B01J2208/00761 , Y10S526/901
Abstract: A method of discharging polymer from a continuously operated polymerization reactor, wherein at least a monomer is polymerized to form polymer particles, the method comprising adjusting the discharge rate of the polymer particles by means of a piston valve having a piston element connected to an actuator, said actuator being able to modulate the piston stroke inside said piston valve.
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公开(公告)号：EP3394110B1
公开(公告)日：2020-10-07
申请号：EP16802037.8
申请日：2016-11-28
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： MAZZUCCO, Antonio , MEI, Gabriele , CAPUTO, Tiziana , PANTALEONI, Roberto , BALESTRA, Enrico , DI DIEGO, Maria , DESTRO, Mara , RINALDI, Riccardo
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公开(公告)号：EP2475690B1
公开(公告)日：2014-01-08
申请号：EP10749834.7
申请日：2010-08-27
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： MAZZUCCO, Antonio , CAPUTO, Tiziana , RINALDI, Riccardo
IPC: C08F10/00 , C08F110/06 , C08F210/06
CPC classification number: C08F210/06 , C08F110/06 , C08F2/005 , C08F2/34 , C08F2/001 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F210/16
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公开(公告)号：EP2281010A1
公开(公告)日：2011-02-09
申请号：EP09753799.7
申请日：2009-05-15
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： RINALDI, Riccardo , MAZZUCCO, Antonio , BALESTRA, Enrico , PENZO, Giuseppe , DORINI, Maurizio , MEI, Gabriele
CPC classification number: B01J19/2435 , B01J19/2465 , B01J2219/00087 , C08F10/00 , C08F110/02 , C08F110/06 , Y10S526/901 , C08F2/34 , C08F2/001 , C08F2/01 , C08F2500/05 , C08F2500/15
Abstract: A process for the polymerisation of olefins carried out in a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into the riser, a gas recycle stream being withdrawn from said first polymerisation zone, subjected to cooling below its dew point and then returned to said first polymerisation zone, the process being characterised in that said gas recycle stream is cooled at a temperature Tc ranging from 0.05°C to 3°C below its dew point.
Abstract translation: 在具有互连聚合区的气相反应器中进行烯烃聚合的方法，其中生长的聚合物颗粒在快速流化或运输条件下向上流过第一聚合区（提升管），离开所述提升管并进入第二聚合 （降液管），在重力作用下它们向下流动，离开所述降液管并被再次引入提升管，从所述第一聚合区排出气体再循环流，经受冷却到其露点以下，然后返回到所述第一 该方法的特征在于所述气体再循环流在低于其露点0.05℃至3℃的温度Tc下冷却。
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