PEFTEC 2017

PEFTEC 2019 - Abstract

Abstract Title: A review of analytical methods for polymer grade ethylene and propylene.
Abstract Type: Poster
Session Choice: Online & Process Monitoring
Presenter Name: Mr Ken Brady
Co-authors:Mr George Gonzalez
Company/Organisation: Agilent Technologies
Country: United Kingdom

Abstract Information :

High purity olefins are required for efficient production of polymer products. Polymer manufacturers require extremely low ultra-low concentrations of arsine phosphine contamination in the range of 5ppb. The effects of other impurities (COS, H2S, O2, CO & CO2) on polymerization activity based on the catalyst type and contaminant concentration. Reduced metallocene and Ziegler-type catalyst activity is driving a requirement to monitor impurities at the lowest possible detection limits.

Contaminants react and accumulate on catalyst's sites. Precise, low level detection of these contaminants during the production process offers the stability for olefin producers to take steps to mitigate these contaminants. To support this an analytical system must have excellent sensitivity to sub-picogram levels of AsH3 & PH3 while being reliable, robust and reproducible. This is addressed with Agilent's pre-configured analyser using the novel high efficiency ion source (HES) with the long-term reproducibility ensured with a novel JetClean self-cleaning-ion-source.