UNIVERSITI TEKNOLOGI MARA

FAKULTI KEJURUTERAAN KIMIA

CHEMICAL ENGINEERING LABORATORY IV

(CPE613)

No. Title Allocated Marks (%) Marks

1 Procedure 10  

2 Process Flow Diagram (PFD) 20  

3 Workbook/Stream Summary 30  

4 Questions & Discussions 40  

TOTAL MARKS 100  

Remarks:

Checked by: Rechecked by:

------------------------------- -----------------------------------( ) ( )Date: Date:

NAME :ALIF ZULHILMI BIN RAZALISTUDENT I.D :2014274656EXPERIMENT :LAB 2 SPLIT RATIO AND DISTILLATION COLUMNDATE PERFORMED :22/10/2015SEMESTER : 5PROGRAM : EH220SUBMIT TO : DR NOOR FITRAH BINTI ABU BAKAR

PROCEDURE

1. The software of ASPEN HYSYS v8.6 is being opened.2. Methanol are being selected as the component in the component list at the

properties part.3. The step is being repeated by selecting water as another component because

component is mixture of methanol and water.

4. The property package selection are being selected using the peng-robinson equation.

5. The simulation part is being clicked. Drag the tee symbol at the interphase. All the input and output stream is being labeled. The flow ratio is being set as 0.5 and 0.5. At the condition part, the temperature is set to 25℃ and the pressure is being set to 521 kPA with the molar flow is set to 2700 kgmole/h. At the properties part, the composition of water is set to 0.5 mol% and 0.5 mol% for ammonia because it is equimolar state.

6. For the below stream also labeled as 'out2' , the pressure is need to be reduced. It has be done by dragged the valve icon. The valve is being named as valve and the input and output stream is being labeled. The delta P is being set to 419kPa because of pressure difference from initial pressure is 520kPa is reduced to 101kPa and it was convert to bar unit.

7. The distillation column is being drag to interphase and labeled as 'DC2'. The inlet stream is being set by taken the stream that have been through the vessel. The no of stages being set to 13 stages. The inlet stage is set as stage no 9. The energy stream was labeled as Q2 for condenser and H2 for reboiler. The condenser is set to total reflux. The overhead liquid is labeled as methanol 2 and water 2 for bottom liquid outlet which being produced by DC2.

8. After that, the button next was pushed and the reboiler configuration being selected as once-through and regular hysys reboiler type. After that, the condenser and reboiler pressure is still the same and no pressure drop at the column. So, the pressure was same as previous which was 101kPa. The temperature is being left out so hysys will calculate the suitable operating temperature. Next, the reflux ratio was set to 0.8340 and done button was being push. But, the process is unconverge.

9. At the design part, specs was being click and the distillation rate was clicked. The specification value is being set to 0.96kgmole/h. The composition fraction is being added and the stage was changed to condenser and the spec value was set to 0.96. The run button was being clicked and green bar appeared with converged written on the bar showed that the process was completed for the bottom which was out2.

10. jdaljla

PROCESS FLOW DIAGRAM (PFD)

1. The inlet stream is the mixture of ammonia (80 wt%) and water (20wt%) at temperature 143.6℃ and the pressure is 1724 kPA and the molar flow is 4536 kgmole/h.

2. The heat removed is 1700 kW by using the condenser.3. The valve is used to reduced the pressure from 1724kPa to 1034kPa.4. The vessel is used to separate the vapor and liquid form.

WORKBOOK

QUESTION AND DISCUSSION

1. What is the temperature of the outlet stream of the condenser? -140.1℃

2. What are the mole fraction for ammonia and water in the vapor and liquid stream of the separator?

Ammonia Vapor Stream- 0.8238Liquid Stream-0.2042

Water Vapor stream-0.1762Liquid Stream-0.7958

3. Determine the mass flow rate for each outlet stream of the condenser.

Vapor stream= 7.616e+004 kgmole/hr Liquid stream= 1944 kgmole/hr

4. Prove manually as what you get the energy balance in condenser

General balance equation

In-Out+Generation-Consumption=Accumulation