Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.
A. Less than
B. More than
C. Same as
D. None of these
Answer: Option B
This Question Belongs to Chemical Engineering >> Fluid Mechanics
Join The Discussion
Comments (1)
Related Questions on Fluid Mechanics
A. Thermal conductivity
B. Electrical conductivity
C. Specific gravity
D. Electrical resistivity
A. $$\frac{{\text{V}}}{{{{\text{V}}_{\max }}}} = {\left( {\frac{{\text{x}}}{{\text{r}}}} \right)^{\frac{1}{7}}}$$
B. $$\frac{{\text{V}}}{{{{\text{V}}_{\max }}}} = {\left( {\frac{{\text{r}}}{{\text{x}}}} \right)^{\frac{1}{7}}}$$
C. $$\frac{{\text{V}}}{{{{\text{V}}_{\max }}}} = {\left( {{\text{x}} \times {\text{r}}} \right)^{\frac{1}{7}}}$$
D. None of these
A. d
B. $$\frac{1}{{\text{d}}}$$
C. $$\sigma $$
D. $$\frac{l}{\sigma }$$
A. $$\frac{{4\pi {\text{g}}}}{3}$$
B. $$\frac{{0.01\pi {\text{gH}}}}{4}$$
C. $$\frac{{0.01\pi {\text{gH}}}}{8}$$
D. $$\frac{{0.04\pi {\text{gH}}}}{3}$$
The pressure drop in a fluidised bed reactor is typically:
✅ Less than that in a similar packed bed reactor.
Explanation:
In a packed bed reactor, the fluid must force its way through a fixed arrangement of particles, which leads to a higher pressure drop due to increased resistance.
In a fluidised bed, the particles are suspended in the fluid, creating a more dynamic and open structure, which offers less resistance to flow once fluidisation starts.
At minimum fluidisation velocity, the pressure drop in a fluidised bed becomes nearly constant and lower compared to a packed bed of the same height.
✅ Correct Answer: A. Less than