Abstract
Cold-state model numerical simulation of opposed tetra-burner gasifier was done using FLUENT software that gives the flow field distribution inside the gasifier and particle residence time, and the simulation results are consistent with the experimental results. The results show that: After fluid impact, some of the downward fluid flows out of the gasifier quickly without recirculation zone, which is not conducive to an adequate reaction between the materials; because of turbulent in jet strike zone and dynamic area in furnace, there has a good mixing effect, the maximum of turbulent kinetic energy is 237 m−2/s2, and other regions’ turbulent kinetic energy is small, less than 10 m2/s2, and poor mixing; particle residence time changes from 2.12 to 34.1 s, and 65 % of them is less than 8.12 s, so it is necessary to improve the particle residence time distribution for opposed tetra-burner gasifier.
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Acknowledgments
This work was supported by the national natural science foundation of China (NO. 5127613).
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© 2016 Springer Science+Business Media Singapore and Tsinghua University Press
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Zhou, J., Fang, Q., Dong, T. (2016). Cold-State Model Numerical Simulation of Coal Water Slurry Gasifier. In: Yue, G., Li, S. (eds) Clean Coal Technology and Sustainable Development. ISCC 2015. Springer, Singapore. https://doi.org/10.1007/978-981-10-2023-0_83
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DOI: https://doi.org/10.1007/978-981-10-2023-0_83
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