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摘要
Euler-Euler two flow model was applied to investigate the effects of nozzle diameter and nozzle position on the hydrodynamics in the airlift loop reactor to provide theoretical guidance for suspension bed industrial equipment with the oil-hydrogen system under the conditions of temperture 703.15 K and pressure 11 MPa. The simulation results showed that there appeared a radial deviation for the maximum of gas holdup and liquid circulation velocity when the diversion tube diameter was too big or too small. The flow performance was better when the ratio of diversion tube diameter to reactor diameter(Di/Do) was 0.70. For small reactor volume, the flow characteristic changed little along with the change of Di/Do. In the process of amplification, the overall gas holdup increased little after the first increase with the increase of Di/Do, while liquid circulation velocity showed a trend of decrease after first increase. For loop reactor volume of 23.03 m3, good flow properties achieved at Di/Do of 0.75, while the optimal Di/Do was 0.70 for loop reactor volume of 109.42 m3 and 208.42 m3. The optimal interval of Di/Do appeared "the left"phenomenon in the amplification.
- 出版日期2016-8-25
- 单位中国石油大学（华东）
