Abstract
To investigate flow structure and solids holdups inside the particle clusters, time series of local solids concentration in two CFB risers were systematically measured by a reflective-type fiber-optic solids concentration probe and over a wide region of operation conditions. The two risers, both having 100 mm i.d., are 15.1 m and 10.5 m high, respectively, and the particles are FCC and sand. Analysis for the time series of local solids concentration indicates that the solids holdups inside clusters are clearly dependent on the local time-mean solids holdups, and there obviously exists a similarity between their radial profiles of the dimensionless solids holdups. Based on the experimental data of this work and other literatures, a correlation between the solids holdups inside cluster and the local time-mean solids holdups is presented.
| Original language | English |
|---|---|
| Pages (from-to) | 46-50 |
| Number of pages | 5 |
| Journal | Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) |
| Volume | 37 |
| Issue number | 5 |
| Publication status | Published - Sept 2005 |
| Externally published | Yes |
Keywords
- Circulating fluidized beds
- Particle cluster
- Riser
- Solids holdups inside cluster
ASJC Scopus subject areas
- General Engineering