caa a22 4500 378927728 CHVBK 20180305123621.0 cr unu---uuuuu 161128e20040128xx s 000 0 eng 10.2202/1542-6580.1078 doi (NATIONALLICENCE)gruyter-10.2202/1542-6580.1078 Radial Profiles of Particle Velocity in a Large Scale CFB Downer [Elektronische Daten] [Zhen Qian, Minghui Zhang, Hao Yu, Fei Wei] Radial profiles of particle velocity in a large scale (418 mm I.D.) downward Circulating Fluidized Bed (CFB downer) were obtained via a Laser Doppler Velocimetry (LDV) system. Results show that particle velocity is gradually increasing along the radial direction and there exists a peak value in the near wall region. Such unique radial profile shape can be explained by the solids accumulating trend in the near wall region of the downer. Experiment results in this large scale downer are also compared with those obtained by other researchers in small scale units so as to investigate the scale-up effect on the radial particle velocity distribution in the downer. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston Circulating Fluidized Bed nationallicence CFB Downer nationallicence Large scale nationallicence Particle Velocity nationallicence LDV nationallicence Scale-Up nationallicence Qian Zhen Department of Chemical Engineering, Tsinghua University, qzhen@flotu.org aut Zhang Minghui Department of Chemical Engineering, Tsinghua University, zhangminghui@csclc.com aut Yu Hao Department of Chemical Engineering, Tsinghua University, yuhao@flotu.org aut Wei Fei Department of Chemical Engineering, Tsinghua University, wf-dce@tsinghua.edu.cn aut International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-01-28) 2:1 2004 2 ijcre https://doi.org/10.2202/1542-6580.1078 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1542-6580.1078 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Qian Zhen Department of Chemical Engineering, Tsinghua University, qzhen@flotu.org aut NATIONALLICENCE 700 1- Zhang Minghui Department of Chemical Engineering, Tsinghua University, zhangminghui@csclc.com aut NATIONALLICENCE 700 1- Yu Hao Department of Chemical Engineering, Tsinghua University, yuhao@flotu.org aut NATIONALLICENCE 700 1- Wei Fei Department of Chemical Engineering, Tsinghua University, wf-dce@tsinghua.edu.cn aut NATIONALLICENCE 773 0- International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-01-28) 2:1 2004 2 ijcre CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter