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Flow Characteristic of Binary Mixtures on a Cold Model of Interconnected Fluidized Beds for Chemical Looping Gasification
Received date: 2013-11-26
Revised date: 2014-02-13
Online published: 2014-02-28
A cold model of interconnected fluidized bed system for chemical-looping gasification of biomass has been designed and built in the laboratory. Fluidized characteristic of sawdust and quartz sand binary mixtures in different conditions were studied, and the results indicated that it was harder for sawdust alone to achieve fluidization and the stable fluidized operating range was also smaller. While, with the Quartz sand content increased in the binary mixtures, the fluidized state in the reactor was improved continuously and the steady state operating range of the material was enlarged. When the content of quartz sand was more than 70%, the binary system fluidized state was closed to the pure quartz sand. Similarly, the material circulation and particle velocity were increased persistently with increasing gas velocity.
Key words： biomass; chemical-looping gasification; binary mixtures; flow behavior
WEI Guo-qiang , HE Fang , HUSEYIN Sozen , LI Xiao-ming , LI Hai-bin . Flow Characteristic of Binary Mixtures on a Cold Model of Interconnected Fluidized Beds for Chemical Looping Gasification[J]. Advances in New and Renewable Energy, 2014 , 2(1) : 18 -24 . DOI: 10.3969/j.issn.2095-560X.2014.01.004
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