\(c_{i}\) |
concentration of component i
(mol/m3) |
\(c_{\text{CO}}^{s}\) |
concentration of CO at the external surface of
the pellet (mol/m3) |
dp
|
pore diameter (nm) |
De,i
|
effective diffusivity of component i in
catalyst pellet (m2/s) |
Di,g
|
gas phase comprehensive diffusivity of
component i in pellet (m2/s) |
Di,k
|
Knudsen diffusivity of component i in pore
(m2/s) |
Di,m
|
gas phase molecular diffusivity of
component i in bulk (m2/s) |
Di,j
|
binary gas phase diffusivity
(m2/s) |
f |
kinetic correction factor |
F |
filling factor |
k |
reaction rate constant
(mol/s·kg·MPa2) |
\(k_{\alpha}\) |
parameter for chain growth factor model |
L |
character diffusion length of the catalyst pellet (m) |
Mi
|
molecular weight of component
i
|
P |
total pressure (MPa) |
Pi
|
partial pressure for component i
(MPa) |
\(r\) |
distance to the center of the pellet (mm) |
\(r_{p}\) |
pellet radius (mm) |
\(R_{p}\) |
pore radius (mm) |
R |
universal gas constant (J/mol·K) |
\(R_{\text{CO}}\) |
CO consumption rate
(mol/kgcat·s) |
Rco,total
|
overall CO consumption rate per unit
(mol/kgcat·s) |
\(R_{\text{CO}}^{s}\) |
CO consumption rate at the external surface of
the pellet (mol/kgcat·s) |
\({\overline{R}}_{\text{CO}}\) |
dimensionless reaction rate of
CO |
Re |
Reynolds number |
Sc |
Schmidt number |
\(S_{C_{5+}}\) |
selectivity of C5+ components
(%) |
\(\text{STY}_{C_{5+}}\) |
space-time yield f C5+
(g/mLcat·h) |
T |
temperature (K) |
X |
conversion (%) |
\(x\) |
dimensionless distance to the center of the
pellet |
\(y_{i}\) |
mole fraction of component i
|