lab 1 simulation proccess
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Transcript of lab 1 simulation proccess
1.0 OBJECTIVE
The objective of this control simulation laboratory is to understand the usage of
condenser, valve and separation process on the process system.
2.0 PROCEDURE
By using ASPENTECH Aspen HYSYS V8.6 software. We create a simulation process based
on the given process condition in first laboratory manual. Step by step procedure was given to
create this process on the program.
Figure 2.1: Aspen HYSYS software.
1. First, select a new project and then properties. At the properties section, added 2
components which is ammonia and water onto the system feed component and used
Advance Pend-Robinson property package.
2. Then at the simulation section, the Stream material icon was selected and named it
into ammonia and water stream. This value on table 2.1 was inserted into it.
Temperature 143.6°C
Pressure 1724 kPa
Molar flowrate 4536 kgmole/hr
Composition (weight percent) Ammonia : 0.2
Water : 0.8
Table 2.1: Properties of ammonia and water stream.
Figure 2.2: Feed stream parameter.
3. After that, select the condenser icon to connect with the feed stream of water and
ammonia and then insert the value as follow. Create a output stream labelled as
stream 2.
Figure 2.3: Condenser flow connection.
Figure 2.4: Condenser working parameter.
4. Then, select a Control Valve icon and connect it into stream 2. Put the parameter
value as given in a manual into the system to reduce the output pressure of the stream
to 1034 kPa. The output stream from the Control Valve was labelled as Stream 3 and
is connected to separator equipment.
Figure 2.5: Control Valve connection.
5. Select the Separator/Flash icon and connected it into Stream 3. This equipment will
separated the vapour and liquid. The upper stream which is vapour stream is for
ammonia. The lower stream was for liquid stream that is water.
Figure 2.6: Separator connection.
3.0 PROCESS FLOW DIAGRAM
Figure 2.7: The finish process flow simulation.
4.0 STREAM SUMMARY
Ammonia and water stream
Temperature 143.6 °C
Pressure 1724 kPa
Molar flow rate 4536 Kgmole/h
Composition Ammonia: 0.2
Water: 0.8
Stream 2
Temperature 143.6 °C
Pressure 1724 kPa
Molar flow rate 4536 Kgmole/h
Stream 3
Temperature 131.6 °C
Pressure 690.0 kPa
Molar flow rate 4536 Kgmole/h
Ammonia Stream
Temperature 131.6 °C
Pressure 690.0 kPa
Molar flow rate 4536 Kgmole/h
Mole fraction(ammonia) 0.8088
Mole fraction(water) 0.1912
Water stream
Temperature 131.6 °C
Pressure 690.0 kPa
Molar flow rate 0 Kgmole/h
Mole fraction(ammonia) 0.2020
Mole fraction(water) 0.7980
5.0 QUESTION AND DISCUSSION
1) What is the temperature of the outlet stream of the condenser?
The temperature of the outlet stream of the condenser should be lower than inlet
stream. However, because of the some error during the data input on simulation
program, the temperature on both stream does not change.
2) What are the mole fractions for ammonia and water in the vapour and liquid stream of
the separator?
Mole fraction for ammonia and water in vapour stream was 0.8088 for ammonia and
0.1912 for water. While, at the liquid stream the mole fraction for ammonia and water
was 0.2020 and 0.7980 respectively.
3) Determine the mass flowrate for outlet stream of the separator?
The mass flow rate for the vapour stream is 7.810x104 kg/h. While, the mass flow rate
for liquid stream is 0. This number is not possible because the flow rate of vapour
stream is too big and there are no flow on liquid stream even thought that there are
water and ammonia composition in there. This error may cause by false data input on
the condenser equipment.