Numerical simulation of gas solid characteristics in double inlet square cyclone separator |
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Authors: | LIU Han zhou LU Xiao feng and HUANG Yong jun |
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Institution: | Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University, Ministry of Education, Chongqing University, Chongqing 400044,P.R.China;Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University, Ministry of Education, Chongqing University, Chongqing 400044,P.R.China;Southwest Electric Power Design Institute, Chengdu,Sichuan, 610021,P.R.China |
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Abstract: | This paper uses RSM turbulence model to conduct the numerical simulation on the gas flow field in double inlet square separator and calculate the velocity field and pressure distribution in the seperator. At the same time, it simulates the solid particle trajectories in the separators using Lagrangian model. The results show that the velocity field and pressure distribution in double inlet square separator have good symmetry, but the flow swirl intensity is insufficient and easy to decay; different sizes and different injection locations bring significant differences for the particle trajectories; injecting small particles can be easy to form flow short-circuit phenomenon inside the separator, injecting particles near the top of separator can be easy to form top ash ring phenomenon inside the separator; these phenomena have adverse factors to the separation efficiency. When the separation cylinder corners of square separator are changed into cutting-shaped chamfers, the flow field in the separator can be improved, and the separation efficiency of separator can be effectively improved. |
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Keywords: | Key words:circulation fluidized bed double inlet square cyclone separator flow of gases particles track numerical simulation |
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