In the hydrodealkylation of toluene to produce benzene, a stream of toluene is mixed with a recycle stream and enters a reactor along with a stream of pure hydrogen. The reaction products at 530°C enter a condenser where they are cooled to 45.0°C. A vapor stream containing 0.55 mol CH4/mol leaves the process, and a liquid stream containing 0.75 mol benzene/mol and 0.25 mol toluene/mol enters a distillation column. The distillate of the column leaves the process at 800.0 mol/hr and contains 0.9000 mol benzene/mol and 0.1000 mol toluene/mol. The bottoms of the column contain 0.15 mol benzene/mol and 0.85 mol toluene/mol and is recycled back to the fresh feed. Hydrogen is fed into the process at 1850 mol H2/hr. This process is carried out at 760 mmHg. Draw the process flow diagram and describe (label) it fully by solving for the unknown variables for all the streams. Calculate the Single Unit and Overall Conversion (%) of toluene.

How large is the content of ethanol expressed in mass percent and in mole percent in hand spirit?

Hand spirit contains 70 vol% ethanol.

Subjects density in (g/cm^3)

Ethanol 0.78934  

Water 0.99823

70% v / v ethanol 0.88650

Discuss and illustrate with examples TWO groups of polymers which are used in general biomedical applications.

The electrical conductivity of a metal depends upon,

(?) all of these selections

(?) dislocation density

(?) impurity content

(?) temperature

Consider a well-mixed tank filled with 200 L of liquid containing a chemical A at the concentration of 4 mol/L which decomposes following a first order kinetics RA=k.CA with a rate constant of k=0.05 min-1 . At t=0 an outlet stream starts to leave the tank with the flow rate of 5 L/min. After the liquid level falls to the half of the initial level, an inlet stream with CA=4 mol/L starts entering the tank at a flow rate of 5 L/min. Calculate the outlet stream concentration 30 minutes after the start of the operation.

answer these two questions (each question should have 200 words or more)  

1.Importance of reactors in various chemical process industries

2.Recent developments made in packed and fluidized bed columns

Pure sulfur is burned with 63% excess air according to the following reaction.
S + O2 = SO2 The furnace gases formed enter a reactor under a pressure of 1 atm at 500 ° C.
80% of SO2 is converted into SO3 by SO2 +1/2 O2 =SO3 reaction. According to this,
a) Calculate the equilibrium constant Kp of the SO2 +1/2 O2 = SO3 reaction. (10 points)
b) What should be the reactor pressure to increase the conversion rate of SO2 to 95% at the same temperature?

You mix together two flows of water. The first flow is a saturated liquid at 300 kPa, moving at a rate of 2 kg/s. The second flow is a superheated vapor at 300 kPa and 300 °C, and is moving at a rate of 0.2 kg/s. If the outlet is similarly at 300 kPa, (a) what is the mass flow rate of the outgoing water, (b) what is the temperature of the outgoing water, and (c) What is the rate of entropy generation for this process?

A substrate is decomposed in the presence of an enzyme according to the Michaelis-Menten equation
with the following kinetic parameters:
Km = 20 g/L
Vmax = 12.0 g/L-min
(a) Determine the concentration of substrate after leaving the second reactor in a two-reactor series of
20-liter CSTRs. The flow rate is 2.00 L/min. The inlet substrate concentration is 40 g/L. The
enzyme concentration in the two reactors is maintained at the same value all of the time.
(b) Determine the conversion in terms of substrate conversion of the two-reactor system and the
conversion of a single CSTR equal to the total volume of the two-reactor system. Clearly indicate
the configuration with the greater conversion

Based on the rum Production process, list the unit operations in which you can apply the theory of Multiphase systems to. For each unit operation explain briefly why this theory applies.

Enlist the names of different types of processes available for production Urea and select a particular production process with proper Justification. Draw a neat sketch of Process flow diagram with major equipments.

what are the unit operations involved in the production of date syrup in an industry?

For the sedimentation of a suspension of uniform particles in a liquid, the relation between observed sedimentation velocity Up and fractional volumetric concentration C is given by Up = UTɛ 4.8 where UT is the free-falling velocity of an individual particle. Calculate the concentration at which the rate of deposition of particles per unit area will be a maximum, and determine this maximum flux for 0.15 mm spheres of glass (density 2500 kg/m3 ) settling in water (density 1000 kg/m3 , viscosity 1 mNs/m2 ). It may be assumed that the resistance force F on an isolated sphere is given by Stokes’ law.