Measurement of solids velocity and concentration in a large cold CFB model

Juho Peltola, Lassi Karvonen, J Elfvengren, J Kolehmainen, Sirpa Kallio, D Pallares, F Johnsson

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

This work applies optical probe and particle image velocimetry (PIV) measurements for determining the local characteristics of the solids flow in a CFB riser and discusses benefits and limitations of the two methods. Measurements were carried out in an 8.5 m tall CFB riser with a cross-section of 0.7 m x 0.12 m. The optical probe was used to measure both solids volume fraction and velocity whereas the PIV was limited to solids velocity measurements. In addition, the vertical pressure profile and solids circulation rate were measured by means of pressure transducers. The work demonstrates the challenge of applying detailed solids flow measurements in CFB reactors. Both methods applied are associated with limitations and inaccuracies and it is concluded that a combination of both local measurement methods and the global pressure measurements will improve the interpretation of the solids flow field in CFB risers

Original languageEnglish
Title of host publicationCFB-11: Proceedings of the 11th International Conference on Fluidized Bed Technology
Place of PublicationBeijing, China
Pages589-594
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
Event11th International Conference on Fluidized Bed Technology, CFB 2014 - Beijing, China
Duration: 14 May 201417 May 2014

Conference

Conference11th International Conference on Fluidized Bed Technology, CFB 2014
Abbreviated titleCFB 2014
CountryChina
CityBeijing
Period14/05/1417/05/14

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Peltola, J., Karvonen, L., Elfvengren, J., Kolehmainen, J., Kallio, S., Pallares, D., & Johnsson, F. (2014). Measurement of solids velocity and concentration in a large cold CFB model. In CFB-11: Proceedings of the 11th International Conference on Fluidized Bed Technology (pp. 589-594).