Homework 1 Problem 1 Aspen Heat Exchanger

# Homework 1 Problem 1 Aspen Heat Exchanger -...

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This problem is based on Felder’s and Rousseau’s Elementary Principles of Chemical Processes Example Problem 8.3-6. Homework 1 Problem 1 Aspen™ Heat Exchanger 20 points possible due Friday September 2, 2011 Grader: Alan Problem Statement: Methanol vapor leaves a synthesis unit at a temperature of 800 ° F and passes through a waste heat boiler in which it cools, and in doing so generates saturated steam at 70 psia. The water fed to the boiler enters at 70 ° F and 70 psia. If the molar feed ratio of water to methanol is 0.2 and the boiler is assumed to operate adiabatically, what is the exit temperature of the methanol? Data The heat capacity of methanol vapor between 400 ° F and about 800 ° F is given by the equation: C p (Btu/lb mole* ° F) = 10.54 + 9.2E 3 T( ° F) From the steam tables in Perry’s Chemical Engineer’s Handbook, the enthalpy of liquid water at 70 ° F is 38.05 Btu/lb m , and that of saturated steam at 70 psia is 1180 Btu/lb m , both relative to liquid water at 32 ° F. Method of Solution: Use the Heat Exchanger Unit Operation in HYSYS TM to model the described heat exchanger. Solution: 1) Start the Aspen Plus TM program: All Programs/AspenTech/Process Modeling V7.2/Aspen Plus/Aspen Plus User Interface 2) Select the Blank Simulation radio button and click OK.

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• Fall '11
• Wiemer
• chemical processes, Elementary Principles, Rousseau’s Elementary, Rousseau’s Elementary Principles of Chemical Processes

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Homework 1 Problem 1 Aspen Heat Exchanger -...

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