Questions 1. a. In the chemical process engineering, PFD and P &ID stand for b. How many major mechanims of heat transfer in the chemical process engineerng? Which one is transfer of heat due to the collision of the molecules? c. A reactor contains 800kg ethanol and is fed with 200kg h ethanol and has one pipe going out at 160kgh. What is solutionspile.com

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Questions 1. a. In the chemical process engineering, PFD and P\&ID stand for b. How many major mechanims of heat transfer in the chemical process engineerng? Which one is transfer of heat due to the collision of the molecules? c. A reactor contains

800 kg

ethanol and is fed with

200 kg

h ethanol and has one pipe going out at

160 kg h

. What is the mass balance for this reactor? Is the system under unsteady state'steady state? Questions 2. Design a PFD dagnu for an antomated industral process for producing C from A and B: A

B ? C

, based upon the laboratory scheme represented in Figure 1 but automated using chemical engineerng principles). Questions 3. For each of the following, indicate whether metal, ceramic, or polymer materals should be used (when ceramic or polymer is selected, also indicate if it should be an insert invide a metal structure). a. A pipeline is to cary a conosive salt solution in a process and is subjected to considerable vibration and flexing. b. A reactor is to contain very ageressive reactants at high temperature. c. A tank must hold an inert gas (argon) at high pressure. Questions 4. Depict the molecular diffusion in the

x

direction through area

S

and write the rate of transfer of species

i

through species

j

by molecular difficion in the

x

direction. How to increase the rate of transfer of

i

molecules through

j

molectles from one locatices to another by molecular diffusice? Questious 5. Draw a shell and tube beat-exchanger: one tube pass, on shell pass. Summanize the steps for deterunining the beat transfer area of the heat exchanger and give ideals to design a heat exchanger in chemical process engineering Question 6. A simple case of a series reaction is illustrated below:

A_{1} ? r_{1} A_{2} ? r_{2} A_{3}

Assuming an approach of first-order nate eçuation of the following type:

r_{1} = k_{1} C_{A 1} : r_{2} = k_{2} C_{M 2}

. The initial concentrations of the three component are.

C_{A 1}^{0} = 1; C_{A 2}^{0} = C_{A 1}^{?} = 0

. Write the mass balance equations of each component and solve the equations. Draw the graph of concentrations

A 1, A 2, A 3

versus time.

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