Homework 1 Problem 3 HYSYS Mixer with Multiple Adjusts

Homework 1 Problem 3 HYSYS Mixer with Multiple Adjusts -...

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Page 1 of 15 Homework 1 Problem 3 HYSYS™ Mixer with Multiple Adjusts 20 points possible due Friday September 2, 2011 Grader: Alan Problem Statement : A feed stream to a process is to consist of 100 kg/h of a gas that is 20 mole percent hydrogen, with the balance being nitrogen. The stream is obtained by blending gases from two separate tanks: Tank A and Tank B have compositions of 10 mole percent and 50 mole percent hydrogen, respectively. Assume that the entire process is at atmospheric pressure and 25 o C. Calculate the required molar flow rate (kmol/h) from Tank A and Tank B to obtain the desired process feed. Method of Solution: Use the Mixer unit in HYSYS TM to simulate the blending of the two streams into the process feed. Use the Adjust operator to solve for the flow rates from Tank A and Tank B needed to obtain the desired composition. Solution: 1) Open the HYSYS TM program: All Programs/AspenTech/Process Modeling V7.2/Aspen HYSYS/Aspen HSYSY 2) Open a new case by either selecting File/New/Case from the top menu bar or clicking on the icon on the tool bar. 3) The Simulation Basis Manager will appear. Click on the Fluid Pkgs tab. Click Add . 4) This is a relatively ideal system, select the Peng-Robinson equation of state. Click on Peng-Robinson in the Property Package Selection list.
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Page 2 of 15 5) Click View to add the process components. Type “nitrogen” into the Match field, be sure that you highlight the appropriate component, and then click Add Pure or press enter to add it to the Selected Components list. Add hydrogen in the same manner. 6) When both components have been added, close the Component View by clicking the in the upper right-hand corner of the window. Also close the Fluid Package windows. 7) Click to open the PFD workspace. 8) From the top menu bar select Flowsheet/Add Operation . Scroll down the list of available unit operations, select “Mixer”, and click Add .
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Page 3 of 15 9) Before we specify our mixer, let’s make sure that SI units will be used in the
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This note was uploaded on 11/14/2011 for the course CHEN 4520 taught by Professor Wiemer during the Fall '11 term at Colorado.

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Homework 1 Problem 3 HYSYS Mixer with Multiple Adjusts -...

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