RD Lab - Exp-03 - G-A1.pdf

Koya University
Faculty of Engineering
Chemical Engineering Department
3rd Stage (2021-2022)
Reactor Laboratory
Lab Report
Number of Experiment: 3
Experiment Name:
Continuous Stirred Tank Reactor (CSTR) - Conversion Test
Experiment Date: 20/10/2021
Submitted on: 27/10/2021
Instructor: Mr. Ahmed Abdulkareem Ahmed
Group: A1
Prepared by:
Safeen Yaseen Jafar
Ahmed Mamand Aziz
Rivan Dler Ali
Ramazan Shkur Kakl
Rokan Mohammad Omer
Ibrahim Ali

Table of Content
1. Aim of Experiment..................................................................................................................................1
2. Procedure.................................................................................................................................................2
3. Tools and Apparatus...............................................................................................................................3
4. Table of Reading .....................................................................................................................................5
5. Calculation and Results..........................................................................................................................6
6. Discussion...............................................................................................................................................10

1
1. Aim of Experiment
- The aim (goal) of this experiment is to examine the performance of
continuously stirred tank reactor for the reaction of NaOH and Ethyl
acetate.

2
2. Procedure
Preparing reactant for the test:
1. Prepare 1 L and 0.05 M of NaOH liquid (solution). after it, we need to prepare second
reactant for reaction occur prepare 1 L and 0.05 M of CH3COOC2H5 solution .
2. First of all, in the service units close all valve if open. After that put the bottles in specific
places in service unit. And be careful to that the pipes and valves are connected as well.
3. Turn on the switch control box (power supply).
4. This experiment operates in the room temperature (at 28 oC in this experiment).
5. Set the limited flow rate of the reagents before run the steps.
Procedure Steps
6. Switch on the valves and pumps of reactants
7. Take the reactants from their containers (bottles to the first).
8. We fill the reactor by both reactant liquids and the flow rate should be limited at both
flow meters in the control box.
9. Switch on the stirrer from the power supply box.
10. Turn on the conductivity meter (which connected firstly to the reactor).
11. Feeds continuously enter the reactor and out the reactor.
12.The conductivity measurements (Conductivity Meter) should be recorded while change
of the conductivity reach the constant value.
13. The readings should be taken at every 15 second.
End of the Procedure
14. At the end of the experiment, turn off the pumps and stirrer from the main control box.
15. Turn off the power of control interface box.
16. Reactants should be removed from both reactant containers 1 and 2. also, the solutions
should be put in their places for the next experiment. Finally drain liquids that remain in
the reactors (all liquids settle out by gravity because we make a space and different
elevation between the CSTR’s).

3
3. Tools and Apparatus
Figure 2: Service Unit - Back
Part
Figure 1: Service Unit - Front Part
1
2
4
3
5
6
7
Figure 3: Control Unit
8
10
11
12
Figure 4: CSTR Reactor

4
Service Unit, control unit and its parts:
1. Water Bath: is the tank which contain water it used for control temperature of reactants.
2. Water Bath temperature switch button and controllers: to select the temperature and
change in it.
3. Reactant Container 1: For storage reactant 1.
4. Reactant Container 2: For storage reactant 2.
5. Water Pump AB-1: it used for pumping water.
6. Pump AB-2: It used for pump the reactor 1.
7. Pump AB-3: It used for pump the reactor 2.
8. Pump AB-1 on/off button: It used for switch on or switch of pump AB-1.
9. Power Button: Used to turn on control unit.
10. Temperature Display: For displaying the temperatures
11. Temperature Sensor: for record temperature.
12. Speed Controller: For control the velocity of reactant.
13. Sensor Selector: it used for select the temperature sensor that you want.
CSTR parts:
1. Coil: for control the temperature of the reaction.
2. Conductivity Sensor: for record the conductivity.
3. Temperature sensor: to read or record the temperature of the reaction.
4. Vessel: it is the closed tank that contain reactants and the reaction happen in it.
5. Stirrer: for mix the reactants and make a collision for reactants.
6. Overflow valve: to out the solution to another reactor during the reaction.
7. Drain valve: to empty the vessel at the end of experiment.

5
4. Table of Reading
Time (s) Conductivity or 𝛌 (mS)
10 4.21
20 4.25
30 4.43
40 4.54
50 4.9
60 4.82
70 4.83
80 4.87
90 4.89
100 4.96
110 4.94
120 4.92
130 4.96
140 4.98
150 4.95
160 5.05
* These data recorded under room temperature (28 o
C)

6
5. Calculation and Results
Concentration calculated by this equation:
𝐶𝐴
𝐶𝐴𝑜
=
λo− λ
λo− λ∞
Conversion calculated by this equation: X =
CAo−CA
CAo
Time (sec) Conductivity (mS) Concentration (M) Conversion Ratio
10 4.21 0.05 0
20 4.25 0.047619048 0.047619048
30 4.43 0.036904762 0.261904762
40 4.54 0.030357143 0.392857143
50 4.9 0.008928571 0.821428571
60 4.82 0.013690476 0.726190476
70 4.83 0.013095238 0.738095238
80 4.87 0.010714286 0.785714286
90 4.89 0.00952381 0.80952381
100 4.96 0.005357143 0.892857143
110 4.94 0.006547619 0.869047619
120 4.92 0.007738095 0.845238095
130 4.96 0.005357143 0.892857143
140 4.98 0.004166667 0.916666667
150 4.95 0.005952381 0.880952381
160 5.05 0 1
* This experiment is under the room condition.

7
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
5.1
0 20 40 60 80 100 120 140 160 180
Conductivity VS Time
0
0.01
0.02
0.03
0.04
0.05
0.06
0 20 40 60 80 100 120 140 160 180
Concentration
in
M
Time in (Sec)
Concentration VS Time

8
0
0.2
0.4
0.6
0.8
1
1.2
0 20 40 60 80 100 120 140 160 180
Conversion
Ratio
Time in (Sec)
Conversion VS Time

10
6. Discussion
Discussion – Safeen Yaseen Ja’far
The datas in this experiment which taken from the (stopwatch and the
conductivity meter) are the same datas that we took from batch reactor experiment
If we see the graph, we know that the conductivity of the experiment will decrease
and comes to constant in both of CSTR and Batch reactor (conductivity decreases
with the increase of time).
But from the calculations, results and graph the differences between this
experiment and previous experiment (CSTR and Batch Reactor, respectively), are
that in the CSTR’s conversion test the conductivity in CSTR rise than batch
reactor. And the conversion in the CSTR more than Batch because CSTR in
continuous, it means that reactants flow continuously into the vessel, and products
flow continuously out of the reactor. There is no relation between the values of
conductivity and conversion with the temperature because, temperature in this
experiment is constant (28 o
C) (room temperature).

11
Discussion – Rivan Dler Ali
Throughout this experiment we found the relation between conductivity and
conversion and concertation with time, and effect of temperature on conductivity.
Also, relationship between concertation and conversion which are vice-versa.
When time passed the conversion and conductivity will increases but,
concentration will decreases.so the relationship between conversion and
conductivity with time are proportional but with concentration is vice-versa.
Conductivity with concentration is vice-versa means when conductivity increase
concentration decreases. Conductivity with conversion is proportional, when
conductivity increase it indicate that conversion will increase too.

12
Discussion – Ibrahim Ali
In the experiment of CSTR we want to discover the relationship between
concentration, conversion and conductivity so in the during the process we
discover the relationship between conductivity and time this relation is directly
when conductivity is increase the time is increase and this is a relationship we
show in the graph the line is from low level is increase to the high level and about
the relationship between concentration and time is reversible so in the during the
process we discover the relationship between concentration and time this relation is
reversible when conductivity is decrease the time is increase and this is a
relationship we show in the graph the line is from high level is increase to the low
level. And about the relationship between conversion and time the relation
conversion is discovered because of concentration so this relation of conversion
and time is directly so when the time is increase at same time the conversion is
increase

13
Discussion – Ahmed Mamand Aziz
During this experiment we were found the relationship between
{conductivity with time} and {conversion with time} and {concentration with
time}, and we found the effect of temperature change with conductivity,
concentration and also with conversion. And we recorded some value of
conductivity according to time, and we saw that during the time would pass the
conductivity would increase [proportional relationship]. By using the little low that
written of our report we could found the CONVERSION. If we see the graph, we
will know the relationship between (conductivity-conversion} both with time, and
we know that the relation between (cond. and time) is proportional, meaning that
conductivity will increase when the time will pass. And we know that the
relationship between (concentration and time) is opposite meaning that when the
time will pass the concentration will decrease, and we know that the relationship
between (conversion and time) is proportional, meaning that conductivity will
increase when the time will pass.

14
Discussion – Rokan Mohammad
In this experiment we were known some knowledge about conductivity and
conversion and concentration and relationship between them and time. also, we
found the effect of time change with conductivity, concentration and also with
conversion. And we recorded some experimental data about conductivity
according to time, and we know that when the time would increase the
conductivity also would increase. And we could find conversion by using the
equation which mentioned in the report. So, if we see the graph, we will show the
relationship between conductivity and conversion both during time, and the
relation between conductivity and conversion is proportional. The relationship
between conversion and time is also proportional, meaning that when the time
would increase the conversion also would increase. But the relation between
concentration and time is opposite, meaning that when the time would increase the
concentration would decrease.

15
Discussion – Ramazan Shkur Kakl
During this experiment we known that the relationship between conversion,
concentration and conductivity with time, and effect of temperature on
conductivity. Likewise, the relationship between time with conversion and
conductivity are proportional from the graph we know when the time goes on
conversion and conductivity will increases but the concentration will decrease with
time. But, relationship between concentration with conversion and conductivity are
vice-versa. conversion and conductivity are proportional means that when
conductivity increases conversion increases with.

RD Lab - Exp-03 - G-A1.pdf

More Related Content

What's hot (20)

Similar to RD Lab - Exp-03 - G-A1.pdf (20)

More from Safeen Yaseen Ja'far (19)

Recently uploaded (20)

RD Lab - Exp-03 - G-A1.pdf