Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant

TL;DR

This study investigates how small dispersive coal dust particles of varying sizes affect the performance and aerodynamic characteristics of iodine air filters used in nuclear power plants.

Contribution

It provides experimental insights into the transport properties and distribution of micro and nano-sized coal dust particles within iodine air filters under realistic conditions.

Findings

Particle size influences distribution within the filter

Smaller particles significantly alter aerodynamic resistance

Vertical and horizontal filters show different performance characteristics

Abstract

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of the aerodynamic resistance of a model of the vertical iodine air filter is completed. The comparative analysis of the technical characteristics of the vertical and horizontal iodine air filters is also made.