مقاله CFD-PBE simulation of gas-phase hydrodynamics in a gas-liquid-solid combined loop reactor : تی پی بین

خلاصه مقاله

The computational fluid dynamics (CFD)-population balance equations (PBE) coupled model is employed to investigate the hydrodynamics in a gas-slurry internal loop reactor with external slurry circulation. The predicted radial profiles of local gas holdup and bubble diameter are in good agreement with the corresponding experimental data. The spatio-temporal velocity profile of the gas phase reveals that the upward movement of gas is slowed down and the residence time of gas is prolonged by the downward momentum of the slurry. Introduction of the external slurry can greatly improve the uniformity of gas holdup distribution in the reactor, especially in the downcomer-tube action region. Moreover, the interaction between the downward slurry and upward gas can lead to small bubble size and high interfacial area as well as good mass and heat transfer. The above results suggest the function of external slurry circulation for the internal loop reactor and would be helpful for optimizing the design and scale up of reactors.

نویسندگان

Nana Qi [ 1274. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China 2274. School of Chemical Engineering, University of Adelaide, South Australia, SA, 5005, Australia ]

Kai Zhang [ 1274. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China 2274. School of Chemical Engineering, University of Adelaide, South Australia, SA, 5005, Australia ]

Yongping Yang [ 1274. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China 2274. School of Chemical Engineering, University of Adelaide, South Australia, SA, 5005, Australia ]

Hu Zhang [ 1274. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China 2274. School of Chemical Engineering, University of Adelaide, South Australia, SA, 5005, Australia ]

کلمات کلیدی

CFD PBE simulation external slurry circulation gas liquid solid hydrodynamics population balance model

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Petroleum Science 2013

Petroleum Science (a journal on petroleum science and technology in the English edition), sponsored by China University of Petroleum, enjoys the assistance of the Science Technology Department of CNPC and three research institutes under the three major oil corporations, CNPC, Sinopec and CNOOC. Petroleum Science is the only English journal in China on petroleum science and technology that is intended for professionals engaged in petroleum science research and technical applications all over the world, as well as the managerial personnel of oil companies. It covers petroleum geology, petroleum geophysics, petroleum engineering, petrochemistry chemical engineering, petroleum mechanics and economic management.

حوزه های تحت پوشش : Mineral Resources, Industrial Chemistry,Chemical Engineering, Industrial and Production Engineering, Energy Economics