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This question is based more on concepts and I am looking for a logical approach to the problem
1 with proper explanationl s)/assurnptions) at each step. i
Consider the spincoating process used to coat (for example) silicon wafers with photoresist. The
p
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Two parallel, plane circular disks (of radius R)lie one above the other a small distance apart. The
' space between them is lled with a uid. The upper disk approaches the lower at a constant (small)
velocity U, displacing the uid. The pressure at r = R
A parallel  disk viscometer consists of two circular disks of (4)0
.radiusRseparated by a small gapB(withR> B). A uid of +1 I!
r
constant density p, whose viscosity ,u is to be measured, is placed in .
the gap between the disks. The lower disk atz= 0 is
I\/ A thrustbearing as shown in the gure is lubricated by puinpingoil at a high pressure of
po. The angular velocity is equal to to. Note that under laminar conditions, both Vr and V9
in the thin gap will be nonzero and p is a
function of r only. Neglec
,7/ The lower plate of a lubricated thrust bearing i Plate ofweightW 5 l
oves to the right at velocity Vo . The stop at
6 right prevents uid ow beyond that point. FLl _l Stop
ind the weight W that can be supported by 2b Liquid 3122,)
t e uid (of viscosity
MASS TRANSFER
ASSIGNMENT No  1
Instructor: Prof. B. c. Meikap
Last Date for Submission: 12022017
Ql: A single stage extraction is performed in which 400 kg of a solution containing 35wt%
acetic acid in water is contacted with 400 kg of pure
CLL 122 Chemical Reaction Engineering I
Semester II: 201617
Instructor(s):
Shantanu Roy
Block I, Room No. 314
Telephone: 6021
Email: roys@chemical.iitd.ac.in
roys.iitd@gmail.com (please use this ID for all communication regarding this course)
Credits:
(3
HW 2112013 CounterCurrent Extraction Process
A quantity of 100 Kg/hr of 5050 acetonewater solution is to be reduced to 10% acetone using 30
kg/hr of 1, 1, 2trichloroethylene in a multi stage counter current extraction operation at 25oC.
Calculate th
HW 14/01/2013 Single Stage Solvent Extraction
A 2500 Kg batch of PyridineWater solution containing 50% Pyridine is to be reduced to
10% Pyridine using 2200 Kg of Chlorobenzene in a single stage extraction process.
HW 2812013 CounterCurrent Extraction Eith Reflux
An extraction cascade equipped with a perfect solvent separator to provide extract reflux, is used to
separate methylcyclopentane (A) and nhexane (C) into a final extract and raffinate containing, on a
Assignment MT120153
Section 1
1.1 Develop an expression for
(a) Drying time in the case of drying of a Spherical water droplet
(b) Sublimation time of a Cylindrical naphthalene rod
(c) Molar transfer rate from a tank 1 to tank 2 connected through a tape
Assignment MT120155
Section 1
(Based on Lecture Notes)
1.1 ) Explain Two Resistance Theory or Two Film Theory. Why is it called so?
1.2 ) Establish the graphical relationship between local mass transfer coefficients and
interfacial concentration in case
Assignment MT120152
Section =1
(Based on lecture notes)
1.1) Derive the equation of continuity in terms of molar flux.
1.2) Considering the steady state diffusion in binary gas mixture derive the
equation for the flux for the following cases
a. Diffusio
Assignment MT120151
Section =1
(Based on lecture notes)
Note:
1) Use the notations used in the class whenever necessary
2) Assume Binary mixture
Q.1) Define
1. Mass average velocity
2. Molar average velocity
3. n , i and j
4. N,I and J
Q.2) Write the st
Assignment MT120154
Section 1
(Based on lecture notes)
Note:  Use the notations used in the class whenever necessary
Q.1.1) What are the ways to obtain mass transfer coefficient?
Q.1.2)
a)
b)
c)
d)
Derive an expression for mass transfer coefficient usi
(1) WWWR 24.1
Liquified natural gas, LNG, is to be shipped from the Alaskan Kenai Peninsula by an
ocean carrier to processing plant on Yaquina Bay, Oregon. The molecular composition
ofg commercial LNG is
Methane, CH4
Ethane, C2H6
Propane, C3H8
Carbon Diox
Mass Transfer  II (CH31010)
Solution to Tutorial Sheet No.: MTII/NCP/2016/2

1. A oncethrough cooling tower is to cool hot process water at the rate of 3.5 x 105 kg/h by air
coming from a blower at a rate of 2.5 x 105 kg/h. The air enters the tower at
QuantitativeMethodsI:SectionsA&B
(COMPUTER)ASSIGNMENTII
Dueonorbefore:11pmonAugust1,2015
1. This is with reference to the Clear Tone Radios Case, with the following modifications:
the lot has 250 radios (instead of 100) and Shankar decides to inspect 4 ra
Exhibit3: Current Production of Regular Shirts
Type of
Operation
Cutting
Sewing
Inspection
Ironing
Packaging
Demand=
Direct Labour Content (min/shirt)
Number of Number of
Workers Machines
4
1
48
48
4
4
4
4
Average WIP
(in 60 shirt batch)
16
144
12
12
12
1
QuantitativeMethodsI:
SectionsA,B
ASSIGNMENTIV(Optional?)
Dueonorbefore:September2,2015
This exercise is optional in the sense that for grading purpose, wed consider best 3 out 4.
If you could not submit any 1 of the earlier assignment in acceptable mode
BTP REPORT
DEPARTMENT OF CHEMICAL ENGINEERING
IIT KHARAGPUR
Optimization of photo catalytic reaction with Reactive Red dye over
titaniazirconia composite catalyst using BoxBehnken design
B.Tech. Project Report
Submitted By
Nitin Gautam
09CH3018
4th Year