Seungyeong Choi and Namkyu Lee and Dong Il Shim and Young Mun Lee and Yong-Ki Park and Hyung Hee Cho
Effect of the CrossSectional Geometry on Heat Transfer and Particle Motion of Circulating Fluidized Bed Riser for CO2 Capture
1930 - 1934
2017
11
12
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/10009201
https://publications.waset.org/vol/132
World Academy of Science, Engineering and Technology
Effect of the crosssectional geometry on heat transfer and particle motion of circulating fluidized bed riser for CO2 capture was investigated. Numerical simulation using Eulerianeulerian method with kinetic theory of granular flow was adopted to analyze gassolid flow consisting in circulating fluidized bed riser. Circular, square, and rectangular crosssectional geometry cases of the same area were carried out. Rectangular crosssectional geometries were analyzed having aspect ratios of 1 2, 1 4, 1 8, and 116. The crosssectional geometry significantly influenced the particle motion and heat transfer. The downward flow pattern of solid particles near the wall was changed. The gassolid mixing degree of the riser with the rectangular cross section of the high aspect ratio was the lowest. There were differences in bedtowall heat transfer coefficient according to rectangular geometry with different aspect ratios.
Open Science Index 132, 2017