Patents by Inventor Giuseppe Penzo

Giuseppe Penzo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11084016
    Abstract: A manhole for a polymerization unit having a through-hole formed with a shoulder matching a corresponding shoulder of a plug of a closure member operatively inserted in the through-hole. The through-hole can be closed with a minimum clearance, such that polymer particles do not deposit in the gap between the wall of the unit and the plug of the closure member.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: August 10, 2021
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Gian Luca Bonaccorsi, Giuseppe Penzo, Enrico Balestra, Maurizio Dorini, Riccardo Rinaldi
  • Patent number: 11078307
    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.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: August 3, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Pietro Baita, Maurizio Dorini, Giulia Mei, Gerhardus Meier, Giuseppe Penzo, Riccardo Rinaldi
  • Publication number: 20210214472
    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.
    Type: Application
    Filed: February 4, 2019
    Publication date: July 15, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Pietro Baita, Maurizio Dorini, Giulia Mei, Gerhardus Meier, Giuseppe Penzo, Riccardo Rinaldi
  • Publication number: 20210148633
    Abstract: Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.
    Type: Application
    Filed: June 21, 2018
    Publication date: May 20, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Giulia Mei, Juergen Mohrbutter, Dieter Littmann, Christoph Wolf, Andre-Armand Finette, Michael Deuerling, Giuseppe Penzo
  • Publication number: 20210102009
    Abstract: A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
    Type: Application
    Filed: August 2, 2018
    Publication date: April 8, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Gabriele Mei, Giulia Mei, Giuseppe Penzo
  • Publication number: 20200376458
    Abstract: A manhole for a polymerization unit having a through-hole formed with a shoulder matching a corresponding shoulder of a plug of a closure member operatively inserted in the through-hole. The through-hole can be closed with a minimum clearance, such that polymer particles do not deposit in the gap between the wall of the unit and the plug of the closure member.
    Type: Application
    Filed: July 17, 2018
    Publication date: December 3, 2020
    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
    Inventors: GIAN LUCA BONACCORSI, GIUSEPPE PENZO, ENRICO BALESTRA, MAURIZIO DORINI, RICCARDO RINALDI
  • Publication number: 20200222872
    Abstract: Fluidized-bed reactor for the gas-phase polymerization of olefins including a gas distribution grid installed in a lower part of the fluidized-bed reactor and a gas recycle line, which is equipped with a compressor and a heat exchanger and which is connected at the upper end with the top of the fluidized-bed reactor, wherein the gas recycle line splits at the lower end in at least two horizontal branches which are connected tangentially with the fluidized-bed reactor below the gas distribution grid and a process for preparing an olefin polymer carried out in the fluidized-bed reactor.
    Type: Application
    Filed: May 15, 2018
    Publication date: July 16, 2020
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: EMANUELE AZZARELLO, GABRIELE MEI, GIULIA MEI, GIUSEPPE PENZO, ROSARIO PESARE
  • Patent number: 10131719
    Abstract: Process for preparing a polyolefin polymer comprising the steps of a) forming a particulate polyolefin polymer by polymerizing one or more olefins in the presence of a polymerization catalyst system in a polymerization reactor; b) discharging the formed polyolefin particles from the polymerization reactor; c) degassing the polyolefin particles by a process comprising at least a final step of contacting the polyolefin particles with a nitrogen stream in a degassing vessel; and d) transferring the polyolefin particles from the vessel, in which the contacting of the polyolefin particles with the nitrogen stream is carried out, to a melt mixing device, in which the polyolefin particles are melted, mixed and thereafter pelletized, without passing the particles through a buffering device, wherein the degassing vessel is only partly filled with polyolefin particles and the empty volume within the degassing vessel is sufficient to take up additional polyolefin particles for at least 3 hours if the transfer of pol
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: November 20, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Giulia Mei, Gabriele Mei, Antonio De Lucia, Pietro Baita
  • Patent number: 9809659
    Abstract: A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 7, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Rodrigo Carvajal, Reinhard Kuehl, Elke Damm
  • Publication number: 20170204206
    Abstract: A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.
    Type: Application
    Filed: June 22, 2015
    Publication date: July 20, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: GIUSEPPE PENZO, Rodrigo CARVAJAL, Reinhard KUEHL, Elke DAMM
  • Patent number: 9458259
    Abstract: Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, the process comprising the steps of a) discharging the polyolefin particles continuously or discontinuously from the gas-phase polymerization reactor and transferring the particles to a first degassing vessel; b) contacting therein the polyolefin particles with a gaseous stream comprising at least 85 mol-% of C3-C5 alkane while the polyolefin particles have an average residence time in the first degassing vessel of from 5 minutes to 5 hours; c) transferring the polyolefin particles to a second degassing vessel; d) contacting therein the polyolefin particles with a stream comprising nitrogen and steam while the polyolefin particles have an average residence time in the second degassing vessel of from 5 minutes to 2 hours, wherein the contacting is carried out at conditions un
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 4, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Giulia Mei, Gabriele Mei, Antonio De Lucia, Pietro Baita
  • Patent number: 9399688
    Abstract: A process for polymerizing olefins at temperatures of from 30° C. to 140° C. and pressures of from 1.0 MPa to 10 MPa in the presence of a polymerization catalyst in a multistage polymerization of olefins in at least two serially connected gas-phase polymerization reactors, and apparatus for the multistage polymerization of olefins, comprising at least two serially connected gas-phase polymerization reactors and a device for transferring polyolefin particles from an up-stream gas-phase polymerization reactor to a downstream gas-phase polymerization reactor, the transferring device comprising—a gas/solid separation chamber placed downstream of the upstream gas-phase polymerization which gas/solid separation chamber is equipped at a lower part with an net for introducing a fluid, and—connected to the gas/solid separation chamber at least two lock hoppers, placed in a parallel arrangement, each connected to the downstream gas-phase polymerization reactor.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: July 26, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Gabriele Mei, Gerhardus Meier, Ulf Schueller, Antonio Ciarrocchi
  • Publication number: 20160108147
    Abstract: A process for polymerizing olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of: a) discharging polyolefin particles into a separation chamber being at a lower pressure than the pressure in the first reactor; b) transferring the polyolefin particles within the separation chamber into a lower part which contains a bed of polyolefin particles which moves from top to bottom of this part of the separation chamber and into which a fluid is introduced so that an upward fluid stream is induced, c) withdrawing polyolefin particles from the lower end and transferring them to one of at least two lock hoppers working intermittently in parallel; and d) simultaneously pressurizing another of the at least two lock hoppers working intermittently by means of a gas comprising reaction gas coming from the second reactor.
    Type: Application
    Filed: May 13, 2014
    Publication date: April 21, 2016
    Applicant: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Gabriele Mei, Gerhardus Meier, Ulf Schueller, Antonio Ciarrocchi
  • Publication number: 20150322178
    Abstract: Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, the process comprising the steps of a) discharging the polyolefin particles continuously or discontinuously from the gas-phase polymerization reactor and transferring the particles to a first degassing vessel; b) contacting therein the polyolefin particles with a gaseous stream comprising at least 85 mol-% of C3-C5 alkane while the polyolefin particles have an average residence time in the first degassing vessel of from 5 minutes to 5 hours; c) transferring the polyolefin particles to a second degassing vessel; d) contacting therein the polyolefin particles with a stream comprising nitrogen and steam while the polyolefin particles have an average residence time in the second degassing vessel of from 5 minutes to 2 hours, wherein the contacting is carried out at conditions un
    Type: Application
    Filed: December 11, 2013
    Publication date: November 12, 2015
    Inventors: Giuseppe Penzo, Giulia Mei, Gabriele Mei, Antonio De Lucia, Pietro Baita
  • Publication number: 20150315302
    Abstract: Process for preparing a polyolefin polymer comprising the steps of a) forming a particulate polyolefin polymer by polymerizing one or more olefins in the presence of a polymerization catalyst system in a polymerization reactor; b) discharging the formed polyolefin particles from the polymerization reactor; c) degassing the polyolefin particles by a process comprising at least a final step of contacting the polyolefin particles with a nitrogen stream in a degassing vessel; and d) transferring the polyolefin particles from the vessel, in which the contacting of the polyolefin particles with the nitrogen stream is carried out, to a melt mixing device, in which the polyolefin particles are melted, mixed and thereafter pelletized, without passing the particles through a buffering device, wherein the degassing vessel is only partly filled with polyolefin particles and the empty volume within the degassing vessel is sufficient to take up additional polyolefin particles for at least 3 hours if the transfer of pol
    Type: Application
    Filed: December 11, 2013
    Publication date: November 5, 2015
    Inventors: Giuseppe Penzo, Giulia Mei, Gabriele Mei, Antonio De Lucia, Pietro Baita
  • Patent number: 9133291
    Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin p
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 15, 2015
    Assignee: Basell Polyolefine GmbH
    Inventors: Massimo Covezzi, Giuseppe Penzo, Gabriele Mei, Giulia Mei, Pietro Baita, Gerhardus Meier, Antonio De Lucia, Ulf Schueller, Gianpiero Ferraro
  • Patent number: 9073027
    Abstract: A gas-phase polymerization reactor having interconnected polymerization zones comprising:—a riser through which the polymer particles flow upwards under fast fluidization conditions or transport conditions;—a downcomer through which the polymer particles flow downward in a densified form under the action of gravity, the bottom of said downcomer being connected to the lower region of said riser by means of a transport section, said transport section being designed as a bend descending from the downcomer to the riser.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 7, 2015
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Silvia Soffritti, Riccardo Rinaldi, Maurizio Dorini, Giuseppe Penzo
  • Publication number: 20140309384
    Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin partic
    Type: Application
    Filed: December 4, 2012
    Publication date: October 16, 2014
    Applicant: Basell Polyolefine GmbH
    Inventors: Massimo Covezzi, Giuseppe Penzo, Gabriele Mei, Giulia Mei, Pietro Baita, Gerhardus Meier, Antonio De Lucia, Ulf Schueller, Gianpiero Ferraro
  • Publication number: 20130165605
    Abstract: A gas-phase polymerization reactor having interconnected polymerization zones comprising:—a riser through which the polymer particles flow upwards under fast fluidization conditions or transport conditions—a dowcomer through which the polymer particles flow downward in a densified form under the action of gravity, the bottom of said downcomer being connected to the lower region of said riser by means of a transport section, said transport section being designed as a bend descending from the downcomer to the riser.
    Type: Application
    Filed: September 2, 2011
    Publication date: June 27, 2013
    Applicant: Basell Poliolefine Italia S.r.I.
    Inventors: Silvia Soffritti, Riccardo Rinaldi, Maurizio Dorini, Giuseppe Penzo
  • Patent number: 8198383
    Abstract: A process for the gas-phase polymerization of ?-olefins carried out in two interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, the process being characterized in that: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer by introducing into the upper part of said downcomer a liquid stream LB having a composition different from the gaseous mixture present in the riser; (b) the ratio R between the flow rate Fp of polymer circulated between said downcomer and said riser and the flow rate LB of said liquid being adjusted in a range from 10 to 50.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 12, 2012
    Assignee: Basell Poliolefine Italia, s.r.l.
    Inventors: Antonio Mazzucco, Riccardo Rinaldi, Silvia Soffritti, Enrico Balestra, Giuseppe Penzo, Gabriele Mei