Evaluation of Gaseous Fluid Dispersion Through Packed Bed Using Radiotracers Technique


Autoria(s): RAMOS, Vitor Santos; CRISPIM, Verginia Reis; BRANDÃO, Luis Eduardo Barreira
Data(s)

07/07/2016

07/07/2016

2009

Resumo

In this study, it was developed a methodology for the determination of the dispersion of a gaseous tracer in porous media using the radiotracer technique. In order to evaluate several porous media, a cylindrical filter was constructed in PVC and connected to a system with constant flow. Inside this unit silica crystals (16-20) mesh was used as porous media and CH3Br (Methyl Bromide) marked with 82Br was used as radiotracer. An instantaneous pulse of tracer was applied in the system entrance and registered by two NaI (3x3)” scintillation detectors located one before and the other after the filter. The curves produced by the radioactive cloud and recorded by the detector were analyzed statistically using the weighted moment method. The mathematical model one considered as great dispersion of tracer was used to evaluate the flow conditions inside the filter system. The results show us that the weight moment method associated with radiotracer techniques is useful to evaluated an industrial filter and allows to measure the residence time distribution, τ, and the axial dispersion, DAB, gas in a porous medium.

Identificador

http://carpedien.ien.gov.br:8080/handle/ien/1795

Idioma(s)

eng

Publicador

Instituto de Engenharia Nuclear

Brasil

IEN

Direitos

openAccess

Palavras-Chave #Gaseous Tracers #Porous Media #Radiotracers
Tipo

conferenceObject