Experimental study of solids holdups inside particle clusters in CFB risers

Xiao Bo Qi, Tao Zeng, Wei Xing Huang, Jing Xu Zhu, Yan Fu Shi

Research output: Journal PublicationArticlepeer-review

26 Citations (Scopus)


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 languageEnglish
Pages (from-to)46-50
Number of pages5
JournalSichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition)
Issue number5
Publication statusPublished - Sept 2005
Externally publishedYes


  • Circulating fluidized beds
  • Particle cluster
  • Riser
  • Solids holdups inside cluster

ASJC Scopus subject areas

  • Engineering (all)


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