Principles of Process Equipment Design — Winter 2022

What do you mean by Optimum Pipe Size?

What are the criteria and factors for design?

With Suitable design equations explain the process design of pump.

Write down the design equation for power required in blower and in adiabatic Compressor.

What is the difference between PFD and P&ID diagrams?

Find out the power required for a turbo blower for the following duty. Fluid: Atmospheric air Capacity = 1000 Nm3/h Discharge pressure = 2 atm a Also find the discharge temperature of air.

Athree stage reciprocating compressor is used to compress 306 Sm3/h of methane from 0.95 atm a to 61.3 atm a. The inlet temperature is 26.70C. Specific heat ration of methane, k = 1.31. Calculate (a) Power required for compression, if mechanical efficiency is 80 percent and

Discharge temperature of gas after 1st stage.

Define Equivalent length of pipe and Number of velocity heads.

What are the different types of baffles used in shell and tube Heat exchanger? Explain it with suitable figures and also mention the functions of baffles.

Explain the general design method for shell and tube heat exchanger with suitable equations.

Define: Reflux ratio. How to determine reflux ratio for binary distillation?

Describe Tinker’s flow model in detail.

Explain the design of Vertical Thermo syphon Reboiler.

Explain in brief about NPSH.

Write down the criteria of selection between kettle type reboiler and thermosyphon reboiler.

Feed mixture to a distillation column contains 30% n-hexane, 32% n- propane, 20% n-butane and 18% n-pentane (by mole). Total flow rate of the feed is 100 kmol/h. If butane and pentane are selected as light key and heavy key components, respectively then (a) fix the operating pressure of distillation column and (b) find the product compositions.1

Explain degree of completion of reaction.

Define (a) Light key (b) Heavy key (c) Adjacent key (d) split key

Butyl acetate formation is carried out in a batch reactor at 900C with sulphuric acid as a homogeneous catalyst. The feed contained 4.97 moles of n-butanol per mole of acetic acid and the catalyst concentration is 0.032% by mass as H SO . Rate equation for this reaction is –r = kC2 . 2 4 A A Where, C = Concentration of acetic acid in mol/cm3 , A k = 17.4 cm3/(mol.min) Density of the reaction mixture at 900C can be assumed constant and equal to 0.75 g/cm3. Calculate the time required to obtain conversion of 50%.

Explain Jet flooding and Down comer flooding.

Explain FUG method for Multicomponent distillation with suitable equation.

Explain in detail about factors affecting the performance of bubble column reactor.

Mention the criteria of selection between tray tower and packed tower.

Explain Advantages and disadvantages of batch reactor over continuous flow reactor.

Explain in detail about process design of bubble column reactor.