Apparent viscosity of binary particle system in gas-solid separation fluidized bed
| Autor: | Guanghui Yan, You Zhou, Zhenxing Zhang, Enkhsaruul Byambajav, Xuan Wang, Pengfei Zhao, Bo Zhang, Junwei Guo, Mengyao Guo, Sun Zongsheng |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Particle system
Materials science business.industry General Chemical Engineering Thermodynamics 02 engineering and technology Apparent viscosity 021001 nanoscience & nanotechnology Viscosity chemistry.chemical_compound 020401 chemical engineering chemistry Fluidized bed Particle Coal 0204 chemical engineering 0210 nano-technology business Mass fraction Magnetite |
| Zdroj: | Powder Technology. 387:348-353 |
| ISSN: | 0032-5910 |
| DOI: | 10.1016/j.powtec.2021.04.036 |
| Popis: | The apparent viscosity of binary particles has a crucial impact on the efficiency of gas-solid separation fluidized bed. Herein, apparent viscosity of the binary particles consisting of magnetite and coal particles was measured by the falling ball method. The test results indicate that the apparent viscosity of binary particles decreased with the increase in coal powder. When the mass fraction of coal increased by 2%, the apparent viscosity, on an average, decreased by 0.12 Pa·s, and dropped by half with increase in operating gas speed from 9.5 cm/s to 12.2 cm/s. The adjustment of gas velocity and magnetite powder content can effectively reduce the apparent viscosity and improve the separation efficiency, without changing the bed density. A modified model has been developed for predicting the apparent viscosity of binary particle. The model performed well in estimating the viscosity with an overall standard deviation of 13.00% from experimental results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect