CFD simulation of ultrasonic atomization pyrolysis reactor: the influence of droplet behaviors and solvent evaporation
| Autor: | Jian Wang, Shouqi Yuan, Wei-Cheng Yan, Jichuan Wu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cfd simulation
Materials science General Chemical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ultrasonic atomization 0104 chemical sciences Physics::Fluid Dynamics Chemical engineering Solvent evaporation Physics::Atomic and Molecular Clusters Physics::Chemical Physics 0210 nano-technology Pyrolysis |
| Zdroj: | International Journal of Chemical Reactor Engineering. 19:167-178 |
| ISSN: | 1542-6580 2194-5748 |
| Popis: | Previous work showed that particle behaviors in ultrasonic atomization pyrolysis (UAP) reactor have a great influence on the transport and collection of particles. In this study, the effects of droplet behaviors (i.e. droplet collision and breakage) and solvent evaporation on the droplet size, flow field and collection efficiency during the preparation of ZnO particles by UAP were investigated. The collision, breakage and solvent evaporation conditions which affect the droplet size distribution and flow pattern were considered in CFD simulation based on Eulerian-Lagrangian method. The results showed that droplet collision and breakage would increase the droplet size, broaden the droplet size distribution and hinder the transport of droplets. Solvent evaporation obviously changed the flow pattern of droplets. In addition, both droplet behaviors and solvent evaporation reduced the collection efficiency. This study could provide detail information for better understanding the effect of droplet behaviors and solvent evaporation on the particle production process via UAP reactor. |
| Databáze: | OpenAIRE |
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