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- Title
Application of CFD to study the flow in a molten salt chlorination furnace.
- Authors
Chen, Huiting; Qiu, Dejin; Ren, Jie; Wei, Han; Khan, Inam Ullah; Mohamed, Abdallah Ahmed; Yu, Yaowei
- Abstract
A numerical simulation based on computational fluid dynamics and population balance model has been accomplished to analyze the gas-liquid-solid three phases in molten salt chlorination furnace. A two-way coupled model considering the influence of the bubble size distribution (BSD) on the flow field by transmitting the data of the Sauter mean diameter is firstly set up and validated with the experimental and simulation results. Based on the mechanisms of bubble coalescence and breakup induced by the turbulence and the bubble-particle interaction, some factors like the velocity field, volume fraction, turbulence dissipation rate, BSD, bubble number density and particle distribution are discussed. The results show that 40 m/s is an appropriate operation parameter for the inlet velocity of molten salt chlorination furnace, for the reason that the large bubble in the upper part of the furnace can break up into fine bubbles distributed uniformly in the whole furnace. It is conducive to the increase the interaction opportunity among phases, promote the chemical reactions, and reduce the area of "dead zone", providing theoretical support and engineering design basis for the production of large-scale molten salt chlorination furnace. [Display omitted] • The influence of bubble size distribution is modeled with two-way coupled CFD-PBM considering particle effects. • The performance of gas stirring is well predicted and analyzed in the molten salt furnace. • The appropriate operation parameter (40 m/s) for the inlet velocity of molten salt chlorination furnace is proposed. • The efficiency of bubble-particle entrainment and gas stirring are studied by discussing the turbulence dissipation rate.
- Subjects
FUSED salts; CHLORINATION; FURNACES; COMPUTATIONAL fluid dynamics; ENGINEERING design; BUBBLES
- Publication
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A, 2023, Vol 196, p354
- ISSN
0263-8762
- Publication type
Article
- DOI
10.1016/j.cherd.2023.06.034