TABLE OF CONTENT

1.0 PROCEDURE

2.0 PROCESS FLOW DIAGRAM (PFD)

3.0 WORKBOOK

4.0 QUESTIONS AND DISCUSSIONS

5.0 APPENDIX

OBJECTIVE:

1. To understand the usage of condenser, valve and separation process.

1.0 PROCEDURE

1.Open the Aspen HYSYS

2.Press new, and firstly insert the component in component list

3.Insert the component, choosing from fluid packages and press stimulation.

3. Arrange the equipment and insert material streams.

4. Insert the feed component information

Under Principles of Process Flowsheet Simulation, access Getting Started in HYSYS (overview). Its main menu consists of four sections (1. Define the Fluid Package, 2. Set Up the Simulation, 3. Convergence of Simulation, and 4. Advanced Techniques). You should review the module Property Package in the first section, and the first three modules in the second section on Setting Up the Simulation.

2.0 POCESS FLOW DIAGRAM (PFD)

3.0 WORKBOOK

STREAM ID

STREAM 1

STREAM 2

STREAM 4

STREAM 5

STREAM 6

Phase vapor vapor liquid vapor liquid Vapor Liquid vapor liquidVapour/Phase fraction

1.0 0.9650 0.0350

0.9759 0.0241

1.0000 0.000 0.0000 1.0000

Temperature

℃ 143.6 140.1 140.1 123.7 123.7 123.7 123.7 123.7 123.7

Pressure kPa 1724 1724 1724 1034 1034 1034 1034 1034 1034Molar flow

kgmole /h 4536 4536 158.9 4427 109.1 4427 0.000 0.0000 109.1

Mass flow

kg /h 7.810e+004

7.810e+004

2826 -7.616e+004

1944 7.616e+004

0.000 0.0000 1944

Std ideal liq vol flow

m3/h 117.1 117.1 3.233 114.9 2.184 114.9 0.000 0.0000 2.184

Molar enthalpy

kJ /kgmole 7.962e+004

8.097e+004

2.266e+005

7.716e+004

2.3544e+005

7.716e+004

2.354e+005

7.716e+004

2.3544e+005

Molar entropy

kJkgmole−C

162.7 159.4 87.07 165.3 82.70 165.3 82.70 165.3 82.70

Heat flow kJ /h 3.611e+008

3.673e+008

3.602e+007

3.416e+008

2.569e+007

3.416e+008

0.000 0.0000 2.569e+007

Liq vol flow @std cond

m3/h 115.7 115.7 3.154 113.7 2.132 113.7 0.000 0.0000 2.132

4.0 QUESTIONS AND DISCUSSIONS

4.1 QUESTIONS

1. What is the temperature of the outlet stream of the condenser?

-The temperature of the outlet stream of the condenser is 123.7 ºC

2. What are the mole fractions for ammonia and water in the vapor and liquid stream of the

separator?

-Mole fractions of Ammonia is 0.8238 and water is 0.1762

3. Determine the mass flow rate for each outlet of the separator.

-The mass flow rate outlet for stream 4 is 4427 kgmol/h and for the stream 5 is 109.1

kg/h

4.2 DISCUSSION

This experiment is to perform separation of ammonia and water. The purpose is to

understand the separation process. First of all, the mixture of ammonia and water in vapor phase

is feed into the condenser. At the condenser, the pressure is at 1724 kPa. The heat is also

removed and the vapor phase will turn to vapor - liquid phase. The vapor – liquid phase is then

flow into the valve. At the valve, the pressure was decreased to 1034 kPa. The effect of the

decrease of pressure will be observed. Then, the vapor – liquid phase of mixture will flow into

the separator. At the separator, the product will divide into two streams which are liquid and

vapor product.

From the program run, the temperature of the outlet stream from the condenser is 123.7

ºC, the outlet pressure is 1034 kPa. The mole fraction for ammonia and water in the vapor outlet

of separator are 0.8238 and 0.1762 respectively. In the vapor outlet, the ammonia is the major

product.By referring to the results of this laboratory, the reason why we required a valve to

expand the pressure of effluent of the condenser is because the feed is in mixture of liquid and

gases. Thus, it is suitable to used valve to substitute the function of expander. Outlet pressure of

the valve should be 1034 kPa because it is the required pressure needs to be expanding before the

mixture of ammonia and water enters the flash vessel.

5.0 APPENDIX