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Flow Field of Circulating Fluidized Bed Reactor with Venturi Inlet Configuration(PDF)

Transactions of Tianjin University[ISSN:1006-4982/CN:12-1248/T]

Issue:
2005年02期
Page:
106-109
Publishing date:

Info

Title:
Flow Field of Circulating Fluidized Bed Reactor with Venturi Inlet Configuration
Author(s):
HU Jinbang LI Yanping~* CHEN Anxin
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
Keywords:
DOI:

Abstract:
Different two-equation k-ε models were used to simulate the gas flow field generated by a new type of circulating fluidized bed reactor with venturi gas distributor. The numerical results were compared with the experimental data. It has been shown that the simulation results from the standard k-ε model have the best match with the experimental data. Based on this model, the gas flow field in the venturi diffuser and riser was analyzed by the concept of velocity nonuniformity and dead zone percentage. Both the nonuniformity of gas velocity and the dead zone percentage reach the maximum at the venturi outlet due to the effect of the vortex. At the same time, it provides a good platform for the further optimization of the inlet configuration of circulating fluidized bed reactor.

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Last Update: 2011-05-04