TY - JOUR
T1 - DEM study of the porosity distribution of pellet sandpile formed by ternary size particles
AU - Wei, Han
AU - Ge, Yao
AU - Li, Meng
AU - Li, Ying
AU - Saxén, Henrik
AU - He, Zhijun
AU - Yu, Yaowei
N1 - vst
Post-print, 24 mån embargo, CC-BY-NC-ND
Mail till Saxén 11.1.2021 / LN
PY - 2020/1/15
Y1 - 2020/1/15
N2 - Porosity is an important parameter to reflect the internal structure of the heap, and it is related to the permeability of a packed bed. Thus, understanding and further adjusting the porosity distribution will help to control the gas-solid reaction in a chemical reactor. In this work, sandpiles formed by ternary size particles with variable mass ratio were researched by discrete element method. The porosity increases with the increase of the mass fraction of small particles. Different dump methods (Drop Test and Chute Test) both cause four distinct porosity regions (Zone A, B, C and D), but the locations are not the same. Changing the drop height in Drop Test and chute properties in Chute Test both have influence on the porosity zone, especially for the upper porosity. Furthermore, size segregation will lead to uneven porosity distribution, but there is no evident relationship between porosity and size segregation in sandpile.
AB - Porosity is an important parameter to reflect the internal structure of the heap, and it is related to the permeability of a packed bed. Thus, understanding and further adjusting the porosity distribution will help to control the gas-solid reaction in a chemical reactor. In this work, sandpiles formed by ternary size particles with variable mass ratio were researched by discrete element method. The porosity increases with the increase of the mass fraction of small particles. Different dump methods (Drop Test and Chute Test) both cause four distinct porosity regions (Zone A, B, C and D), but the locations are not the same. Changing the drop height in Drop Test and chute properties in Chute Test both have influence on the porosity zone, especially for the upper porosity. Furthermore, size segregation will lead to uneven porosity distribution, but there is no evident relationship between porosity and size segregation in sandpile.
UR - https://www.sciencedirect.com/science/article/pii/S0032591019309611
U2 - 10.1016/j.powtec.2019.11.017
DO - 10.1016/j.powtec.2019.11.017
M3 - Article
SN - 0032-5910
VL - 360
SP - 1337
EP - 1347
JO - Powder Technology
JF - Powder Technology
ER -