Method for Determining a Stickiness Temperature of a Resin

摘要

Methods and systems for controlling a polymerization reactor in a non-sticking regime are disclosed. An exemplary method includes measuring parameters for the polymerization reaction including a reactor temperature and a concentration of an induced condensing agent (ICA) in a polymerization reactor. An equivalent partial pressure ((PICA)equiv) of the ICA is calculated. The polymerization reactor operation is located in a two dimension space defined by a reactor temperature dimension and a ((PICA)equiv) dimension. The location in the two dimensional space is compared to an non-sticking regime, defined as the space between an upper temperature limit (UTL) curve and a lower temperature limit (LTL) curve. Parameters of the polymerization reactor are adjusted to keep the reactor within the non-sticking regime.

主权项

1. A method for determining a stickiness temperature of a resin, comprising:
adding resin to a testing device comprising an agitator; adding an induced condensing agent (ICA) to the testing device; running the agitator; and increasing the temperature until a value of a torque used to run the agitator exceeds a limit.