Question

Hi everybody,can you help me for problem 4 in the attach . Thank for help!

The elementary reversible reaction A + B 2C occurs in the liquid phase in isothermal CSTR. A stream containing equimolar amounts of A and B in a solvent enters. the reactor, and the conversion of A is measured to be 60%. The equilibrium conversion o A under the same inlet conditions is known to be 80%. The volumetric flowrate into the process is to be increased by a factor of 1.5, with the inlet concentrations of A and B and the temperature remaining constant. What is the new conversion of A? The elementary irreversible reaction A + B rightarrow C is conducted in a gas phase in an isothermal PFR. The feed enter the reactor at the pressure of 10 bur and the temperature of 650 K and consists of 30% A, 30% B, and 40% inert (in mole). The conversion of A in an existing PFR is measured to be 50%. By what factor should the PFR volume used for this process be increased to achieve a conversion of 75% if there is no change in the feed stream? The gas phase, irreversible reaction A + 2B rightarrow C takes place in an isothermal, packed bed reactor. The feed contains 25% A and 75% B (in mole) at 2 bar and 600 K. The inlet volumetric flow rate is 10 L/min, and the outlet volumetric flow rate is the same. The conversion of A is 70%. Estimate the outlet pressure. (10%) The irreversible gas phase reaction A + B rightarrow 2C is carried out in a PBR. The reaction is non-elementary in that it is first order in A and zero order in B. The feed is equal molar in A and B. and the pressure at the entrance is 10 atm and the pressure at the exit is 2 atm.F_A0 = 100 mol/s; k = 1 dm^3 kg^-1 s^-1; C_A0 = 1 mol/dm^3 What is the conversion exiting the reactor? If the flow were turbulent, what would be the pressure drop if the cross sectional area was increased by a factor of 2 and the particle size decreased by a factor of 10? All other conditions remain the same. The gas phase irreversible reaction is carried out isothermally in a PBR. A rightarrow B The reaction is zero order. The entering temperature is 400 K, and the entering pressure is 10 atm. The flow is turbulent. For a 10 kg PBR with a pressure drop parameter a = 0.01 kg'1, the exit conversion was found to be 0.4. What catalyst weight of the PBR will you require if you need an exit conversion of 0.8, assuming that the particle diameter is decreased by a factor of 2 so that the pressure drop parameter is now increased to 0.02? Assume all other operating conditions are the same as for the base case (i.e. W = 10 kg). For the fixed inlet pressure of 10 atm, will the volumetric flow rate v, (dm3/s), be greater smaller, or remain the same when the particle diameter is decreased by a factor of 2?

Answer 1

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