Solid material in fluidized-bed polymerization reactors consists of two components with different triboelectric properties. The main material is a granular polymer with the particle size from ∼100 to >1000 μm. The second component, very small in volume, is fresh catalyst, spherical particles with the diameter from 20 to 40 μm. Small loads of catalyst particles are periodically fed into the reactors through narrow metal tubes with a gas flow (nitrogen or monomer).

This catalyst injection process leads to accumulation of a significant electric charge on the catalyst particles. This paper describes results of laboratory experiments aimed at determining sources of electrostatics generation in spherical catalyst particles passing through narrow tubes, a possible mechanism of the charging and methods of its mitigation.

流化床聚合反应器中的固体材料由具有不同摩擦电特性的两种成分组成。主要材料是颗粒状聚合物，粒径为~100至> 1000μm。第二个成分，体积非常小，是新鲜的催化剂，直径为 20 至 40 微米的球形颗粒。少量催化剂颗粒通过带有气流（氮气或单体）的窄金属管定期送入反应器。

这种催化剂注入过程导致大量电荷在催化剂颗粒上积累。本文介绍了旨在确定通过窄管的球形催化剂颗粒中产生静电的来源、可能的充电机制及其缓解方法的实验室实验结果。