My self made Powerpoint Presentation on reaction inside plug plow reactor

1. Reaction Engineering and Thermodynamics LAB
Dr. B.R. Ambedkar National Institute Of Technology, Jalandhar
Department Of Chemical Engineering
Presented by:- Ankit Choudhary
18112008 – 3rdyear
9-March-2021

2. Name: ANKIT CHOUDHARY
Roll Number: 18112008
SEMESTER: 6
BRANCH: CHEMICAL ENGINEERING

3. CONTENT
AIM
To determine the rate constant for saponification reaction of ethyl acetate with
NaOH in a plug flow reactor.
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4. INTRODUCTION
. A plug flow reactor is more efficient than the mixed flow reactor
for reaction whose rates increases with reactants condition.
. Concentration of the reactant varies along the length of the
reactor but not in the radial direction.
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5. THEORY
In case of a coil, turbulence is introduced due to frequent change
in the direction of flow and presence of secondary flow. So higher
value of k is expected in case of a coil type PFTR.
For steady state rate operation:
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7. DESCRIPTION
The set up consists of 2 feed tanks through which 2 reactants are
fed to the reactor.
Rotameters are provided to measure the individual flow of
chemicals.
The concentration of feed and the product coming out from the
reactor are analyzed by chemical titration and then check the
effect and the performance of the reactor.
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8. 8
UTILITIES REQUIRED
Electric Supply: Single Phase, 220 V AC, 50Hz, 0.5 kW with
earth connection.
Water Supply.
Drain.
Compressed Air Supply at 2 Bar, 0.5 CFM.
5 conical flasks.
Measuring cylinder.
Stopwatch.
Burette.
Chemicals Quantity
NaOH Pellets 80 gm
N/10 HCI 20 ml
Ethyl acetate 200 ml
Indicator (phenolphthalein). Few drops

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10. EXPERIMENTAL PROCEDURE:
1.Prepare 20L of N/10 NaOH solution by dissolving 80gm of
NaOH in 20L of water.
2. Prepare 20L of N/10 ethylacetate solution by mixing 176 ml of
ethyl acetate in 20L of water.
3. Fill the respective tanks with these solutions.
4. Pass equimolar feed rates of ethyl acetate and NaOH into the
PFTR by allowing equal volumetric feed rates of reactants into
the reactor.
5. After about 10 min i.e when steady sate is achieved, collect
exact 10ml of the sample of the liquid at the outlet, in a graduated
cylinder that already contains 20ml of Std. N/10 HCL. Transfer
this solution (30ml) in a 250ml or 100mL titration flask.
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11. EXPERIMENTAL PROCEDURE
6. Using phenolphthalein as indicator, titrate this solution (i.e
excess HCI) against N/10 NaOH (add NaOH from burette) & note
the volume of N/10 NaOH used (VNaOH).
7. For calculating the conversion at equilibrium condition, collect
the sample 10ml, in an empty conical flask and allow the reaction
to proceed for completion for 2hrs. After 2hrs titrate the solution
with N/10 HCI using phenolphthalein as indicator. Note the
volume of N/10 NaOH used.
8. Repeat all the steps for different flow rates of feed.
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12. NOMENCLATURE
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CA Concentration of unreacted
NaOH in the reactor, g mole/L
CAO Initial Concentration of NaOH
in the feed mixture, g mole/L
HCLO Amount of HCL taken for
quench, g mole
HCLR Amount of HCL reacted with
NaOH, g mole
k Rate constant, L/g mol min
NHCL Number of moles of HCL used,
g mole/L
N NaOH Number of moles of NaOH
used, g mole/L
VR Reactor volume, L

13. VO Volumetric feed rate, LPH
VHCI Volume of N/10 HCI taken for
quench, ml
VSAMP Volume of sample taken, ml
V NaOH Volume of NaOH used for
neutralizing, ml
XA Degree of conversion
t Residence time, min
NOMENCLATURE

14. OBSERVATION AND CALCULATIONS
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16. PRECAUTIONS & MAINTENANCE INSTRUCTIONS:
1. Measure the exact volume of water and weigh the chemicals.
2. Always use clean water and good quality chemicals and
standard solution for titration.
3. Use electronic balance for weighing of chemicals. Don’t mix
the droppers of different chemicals.
4. Keep close all the drain valves and vent valve should be open
while filling the reactant in feed tanks.
5. Flow should not be disturbed during the experiment.
6. Use jacketed PFR In order to maintain the temperature.
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17. TROUBLESHOOTING
1. If any type of suspended particles come in the Rotameter.
Remove the Rotameter clean the tube and fit that at its place.
2.If there is any leakage tight that part or remove that and fix that
again after wrapping Teflon tape.
3. If Rotameter is fluctuating more than average, tight control knob
of that.