HYSYS SIMULATION/CSTR

 

INTRODUCTIC 
 

In this lecture, a flowsheet for the production of propylene glycol is presented. Propylene

 oxide is combined with water to produce glycol in a CSTR • The propylene oxide and

 

water feed streams are combined in a mixer. The combined stream is fed to a reactor,

 

operating at atmospheric pressure, in which propylene glycol is produced.

PROBLEM STATEMENT

 Simulate the production of Propylene Glycol from Propylene oxide and excess water

 

using a CSTR. 

                         H2O+ C3H6O -----------------> C3H8O2 

 

>Fluid package: UNIQUAC 

• Base Component: PropyleneOxide. 

• Reaction Phase: Combined Liquid.

 • Forward Reaction Arrhenius Parameters:

 -Frequency Factor: 1.7 x 10^13

- Activation Energy: 3.24 x 10^4. btu/Ibmole

 

see the simulation 

 

Simulate Equilibrium Reactor

PROBLEM STATEMENT

 The new application of hydrogen as a raw  for fuel cells for mobile power source

 (PEM fuel cells) requires that the inlet gas have a concentration lower than 10-20 ppm.

 Otherwise, the anode is poisoned and the cell efficiency abruptly drops. Hence, if the

hydrogen is produced from hydrocarbon or alcohol reforming, purification is required in 

 

order to reduce the CO levels to cell requirements. The most technologically feasible

 

purification train consist of a water gas shift reaction (WGS). The reaction 

CO + H20 <----------------->CO2 + H2 

has been employed for 40 years in the industrial process for H2 production from liquid

 

and gaseous hydrocarbon. The role of the WGS reaction is to increase the H2 ryield and

 

decrease the CO concentration, which is a poison for some catalyst used.

LEARNING OUTCOMES

>Simulate equilibrium reactor and reactions in HYSYS. 

>Re-Add the reactions and reaction 

>Attach reaction sets to the fluid package. 

SEE VIDIO PART1 AND 2

PART 1 SIMULATION

                  PART 2 SIMULATION 

 

Conversion of HYSYS Simulation

 

PROBLEM STATEMENT . 

Develop a model that represents partial oxidation of methane to produce hydrogen. 

• Given the following

 conditions; Fluid package: Peng- Robinson Temperature: 25°C. Molar flow for CH4 : 100 kgmole/hr

 Pressure: 2 bar. Molar flow for Air(79% N2 & 21% O2): 260 kgmole/hr %Conversion: 40% and 60% for

 Rxn 1 and 2 resp

BUILDING THE SIMULATION

 • Access Hysys. 

Define Simulation Basis. 

• Add reactions. Add reaction sets. Make sequential reactions. 

• Attach reaction to fluid package. Add feed streams 

• Add the conversion reactor 

Flash Separator

INTRODUCTION • 

A flash separator is a device or an equipment used in several industrial applications to separate a vapour- liquid mixture. It is performed to determine the product condition and phases. It is referred also to as flash drum or knock- out drums.

PROBLEM STATEMENT 

We have a stream containing 15% ethane, 20% propane, 60% i- butane, and 5% n- butane at 50°F and atmospheric pressure and a flowrate of 100lbmoles/hr. Th compressed to 50 psia, and then cooled to 32°F. The resulting vapour and liquid are to be separated as the two product streams. What the flowrates and compositions of these two streams?

 

Pipe Sizing- Hysys- pressure drop

 

 Pressure drop calculation and how use of adjust function  

Q= A . V  

P= 2 bar 

T=25c 

flow rate =?

 

 

Hysys Simulation of Pump

 

Estimate the outlet temperature of n-hexane and note down the duty of the pump 

Use hysys to find solution

ex: estimate  n-hexane pressure in  3 atm to 10 atm 

 

 

Adding Material Streams

 Hysys simulation -

>Starting HYSYS 

>Simulation Basis Manager

>Creating A New Simulation

>Adding Components to the Simulation

>Selecting A Fluids Package 

>Selecting Thermodynamics Model 

>Enter Simulation Environment

>Adding Material Streams

>Review and Summary Problems