
What is the equation for H_mf (hight of the bed during minimum fluidization) in a fluidized...
A fluidization catalyst, specific gravity 1.8, is fluidized with air at 550K and 2atm. The catalyst may be assumed spherical, with diameter 300 um. The gravitational acceleration is 9.8 ms-2. The static void fraction is 0.42. The unfluidized bed height is 1.5 m. Find in SI units: The minimum pressure drop will be: *
Identify major companents of a Fluidized Bed Reactor and their functionalities or (purpose).
1. Discuss the applications of fluidization along with examples and diagrams 2. What is expansion of fluidized beds and derive the equation for particulate fluidization to derive V, in terms of void fraction along with the charts 3. Derive Ergun equation, Kozney Karman equation and Burke Plummer equation and give their Reynolds number conditions 4. Solve Problem 7.16 : Air leaving a fluidized bed at 1500c contains a small amount of dust with particle sizes between 2 and 20 micro...
QUESTION 2: FLUIDIZATION 2.1 Explain the effect of fluid velocity on pressure gradient. (10) 2.2 Malume Pty Ltd is a consulting company specializing in fluidized bed technology. A client, Eagle's nest investments specializing in Coal to Liquids (CTL) brings the problem as outlined below to Malume Pty Ltd. Coal particles with size of 0.14mm, shape factor of 0.92 and a particle density of 1200kg/m are to be fluidized with air at 2 bar (abs) and 30'C. The bulk density of...
For a - Fluidized Bed
mer u te i ule Llul UN ULDF values. 6. Develop a model equation for the pressure drop, AP, needed to supply enough force to support the weight of the particles in the bed minus the buoyant force of displaced fluid. 7. Use the result in (6) to deriye a model for the minimum fluid
Particles having size of 0.1mm, a shape factor of 0.8 and a density of 1650 kg/m' are to be fluidized using air at 25°C (p=2.374 SI, u=1.45x10ʻSI) and 202.65kPa (abs pressure). The bed's height at minimum fluidizing conditions is Lmf=1.6m. The bed diameter is 0.5m and the bed height when the particles are at rest is Lo=1m. 3.1. What is the mass of particles to be used ? 3.2. Calculate the minimum void fraction of the fluidized bed? 3.3. Calculate...
6 (20 pts). The irreversible elementary reaction of A+B take place in the packed bed rector PRO as shown below. Unfortunately, the catalyst particle size is so small as to induce the pressurəsro across the catalyst bed (P. = 20 atm and Pout 9 atm). You want to reduce the pressure drop and thereby increase the overall conversion. One way to eliminate the pressure drop in the catalytic reactor is to use a fluidized CSTR-type reactor in which a catalyst...
Problem 5. The gas-phase elementar isomerization A B is carried out at 20 atm in a fluidized CSTR (below) containing 100 kg of catalyst where 50% conversion is achieved. Po:20 atm FAo 100kg . P-20 atm X 0.5 Someone proposed to replace the CSTR with a packed bed reactor (PBR, below), the entering pressure was 20 atm and the exit pressure was found to be 5 atm Po-20 atm FAo (100kg) (1) What would be the conversionif No pres ro...
A 40.0 kg crate rests on the flat bed of a truck. What is the minimum coefficient of friction between the bed of the truck and the crate for the truck to accelerate at 3.43 m/s2 without the crate sliding along the bed?
the nurse is giving a bed bath to client on strict bed rest. During the bath, the nurse utilizes long firm strokes from distal to proximal area. what is the purpose of this method while giving bed bath? A. it increase the client's activity intolerance. B. it promotes range of motion C. it decreases muscle atrophy D. it increases venous circulation