TY - JOUR
T1 - Bed collapse and expansion characteristics of multi-walled carbon nanotubes in fluidized beds
AU - Jeong, Sung Woo
AU - Lee, Dong Hyun
N1 - Publisher Copyright:
© 2018 The Society of Powder Technology Japan
PY - 2018/3
Y1 - 2018/3
N2 - The objective of this study was to investigate bed collapse and expansion characteristics of different types of multi-walled carbon nanotubes (MWCNTs) in fluidized bed with a 0.14 m-ID × 2.4 m-height Plexiglas column. Three types of MWCNTs were used as bed materials: (i) N, NC7000™ prepared by Nanocyl®, (ii) Sf, fine entangled MWCNTs agglomerated by strong cohesive force such as van der Waals force, (iii) Sc, coarse entangled MWCNTs with a single particle. Similarity between MWCNTs and Geldart group particles was investigated based on bed collapsing process. Results showed that bed collapsing processes of N, Sf, and Sc were similar to those of Geldart groups A, C, and B particles, respectively. Based on bed collapse and expansion characteristics, dense phase voidages of N and Sf were 0.795 and 0.921, respectively, in bubbling fluidization at superficial gas velocity of 0.19 m/s.
AB - The objective of this study was to investigate bed collapse and expansion characteristics of different types of multi-walled carbon nanotubes (MWCNTs) in fluidized bed with a 0.14 m-ID × 2.4 m-height Plexiglas column. Three types of MWCNTs were used as bed materials: (i) N, NC7000™ prepared by Nanocyl®, (ii) Sf, fine entangled MWCNTs agglomerated by strong cohesive force such as van der Waals force, (iii) Sc, coarse entangled MWCNTs with a single particle. Similarity between MWCNTs and Geldart group particles was investigated based on bed collapsing process. Results showed that bed collapsing processes of N, Sf, and Sc were similar to those of Geldart groups A, C, and B particles, respectively. Based on bed collapse and expansion characteristics, dense phase voidages of N and Sf were 0.795 and 0.921, respectively, in bubbling fluidization at superficial gas velocity of 0.19 m/s.
KW - Bed collapse
KW - Bed expansion
KW - Fluidized beds
KW - Multi-walled carbon nanotubes
UR - https://www.scopus.com/pages/publications/85040329206
U2 - 10.1016/j.apt.2017.12.017
DO - 10.1016/j.apt.2017.12.017
M3 - Article
AN - SCOPUS:85040329206
SN - 0921-8831
VL - 29
SP - 751
EP - 755
JO - Advanced Powder Technology
JF - Advanced Powder Technology
IS - 3
ER -