Patents by Inventor Lieven Van Looveren

Lieven Van Looveren 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).

  • Flash Line for Improving the Devolatilization of Polymer Slurry Produced in a Polymerization Reactor
    Publication number: 20140048152
    Abstract: The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: Total Research & Technology Feluy
    Inventors: Lieven Van Looveren, Marc Moers, Mathias Wijffels
  • Process for improving the devolatilization of polymer slurry produced in a polymerization reactor
    Patent number: 8618227
    Abstract: The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 31, 2013
    Assignee: Total Research & Technology Feluy
    Inventors: Lieven Van Looveren, Marc Moers, Mathias Wijffels
  • Process for improving the devolatilization of polymer slurry produced in a polymerization reactor
    Patent number: 8372923
    Abstract: The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: February 12, 2013
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Lieven Van Looveren, Marc Moers, Mathias Wijffels
  • Method and system for degassing polymer powder
    Patent number: 8034896
    Abstract: The present invention relates to a method for degassing polymer powder comprising flushing the polymer powder in a first chamber with a first flow of flushing gas, transferring the polymer powder into a second chamber and flushing the polymer powder with a second flow of flushing gas in said second chamber. The present invention also relates to a system suitable for carrying out this method.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: October 11, 2011
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Eric Damme, Marc Moers, Lieven Van Looveren
  • Process for Improving the Devolatilization of Polymer Slurry Produced in a Polymerization Reactor
    Publication number: 20110098421
    Abstract: The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line.
    Type: Application
    Filed: October 26, 2007
    Publication date: April 28, 2011
    Applicant: TOTAL PETROCHEMICAL RESEARCH FELUY
    Inventors: Lieven Van Looveren, Marc Moers, Mathias Wijffels
  • Method and System for Degassing Polymer Powder
    Publication number: 20100041825
    Abstract: The present invention relates to a method for degassing polymer powder comprising flushing the polymer powder in a first chamber with a first flow of flushing gas, transferring the polymer powder into a second chamber and flushing the polymer powder with a second flow of flushing gas in said second chamber. The present invention also relates to a system suitable for carrying out this method.
    Type: Application
    Filed: March 6, 2007
    Publication date: February 18, 2010
    Applicant: Total Petrochemicals Research Feluy
    Inventors: Eric Damme, Marc Moers, Lieven Van Looveren
  • Method for Making a Transition between Polymer Grades
    Publication number: 20100016523
    Abstract: The present invention relates to a method of transition between polymer grades in a polymerisation process comprising polymerising at least one monomer in at least a first reactor and a second reactor connected to each other in series, wherein the monomer feed in the first reactor is maintained essentially constant during the transition.
    Type: Application
    Filed: March 28, 2007
    Publication date: January 21, 2010
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Marc Moers, Lieven Van Looveren, Mathias Wijffels