Page 1 of 15 Homework 1 Problem 3 HYSYS™ Mixer with Multiple Adjusts20 points possible due Friday September 2, 2011 Grader: AlanProblem 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 oC. 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 HYSYSTMto 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 HYSYSTMprogram: All Programs/AspenTech/Process Modeling V7.2/Aspen HYSYS/Aspen HSYSY 2)Open a new case by either selecting File/New/Casefrom the top menu bar or clicking on the icon on the tool bar. 3)The Simulation Basis Managerwill appear. Click on the Fluid Pkgstab. Click Add. 4)This is a relatively ideal system, select the Peng-Robinson equation of state. Click on Peng-Robinsonin the Property Package Selectionlist.
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