Nova Chemicals (international) S.a.

Nova Chemicals Inc.

Lawrence Van Asseldonk

XiaoChuan Wang

Qinyan Wang

Stephen John Brown

Fazle Sibtain

Stephen Salomons

Eric Clavelle

Yves Lacombe

Niousha Kazemi

Isam Jaber

Mohamed Aiffa

Amy Baltimore

Steven Clemens

Geoffrey Harding

Helena Ouskine

Perry Dewit

Robert Van Asseldonk

Abolfazl Noorjahan

Jeffrey Cahill

Carlos Duque

William Oberg

Holly Severin

The devolatilization of plastomer pellets is undertaken using nitrogen that is recycled in the process. Volatile hydrocarbons are removed from the nitrogen in a hydrocarbon extraction vessel (e.g. an adsorbent bed). In an embodiment, the recycled nitrogen contains less than 300 ppm of volatile hydrocarbons after being treated in the adsorbent bed.

Devolatilization of plastomer pellets

This disclosure relates to a method and an apparatus for the delivery of a multi-component olefin polymerization catalyst to a polymerization reactor. The apparatus includes: a first catalyst component delivery conduit; a second catalyst component delivery conduit which is disposed within the first catalyst component delivery conduit; a first catalyst component mixing conduit; a third catalyst component delivery conduit which is disposed within the first catalyst component mixing conduit; a second catalyst component mixing conduit comprising an upstream section and a downstream section, the downstream section terminating within the polymerization reactor; and a diluent delivery conduit; the first and second catalyst component delivery conduits each being open-ended and co-terminating at the first catalyst component mixing conduit; the first catalyst component mixing conduit and the third catalyst component delivery conduit each being open-ended and co-terminating at the upstream section of the second catalyst component mixing conduit; and the diluent delivery conduit terminating at the downstream section of the second catalyst component mixing conduit.

Multistage catalyst injection system for an olefin polymerization reactor

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Sarnia, Canada

Lawrence Van Asseldonk