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Aspen Plus Tutorial 4_Using Heat Transfer with a Plug Flow Reactor

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					Aspen Plus Tutorial 4

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Aspen Plus Tutorial 4: Using Heat Transfer with a Plug Flow Reactor
This is an adjustment of Aspen Tutorial 3. In that tutorial, we assumed the reactor would operate isothermally. Now we want to make sure that it does by adding heat transfer. Start from Aspen Tutorial 3 and add the "HEATX" heat exchanger and the water cooling streams indicated in the flowsheet below. The screenshots below illustrate how do configure such a system in Aspen Plus. An assignment is given below.

http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

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http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

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http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

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http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

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http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

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Assignment:
You'll probably find that the conversion of VA is pretty low. The conversion can be increased by reducing the feed stream inlet to 10000 lbmol/hr and increasing the pipe diameter to 2 inches. Make modifications to your system reflecting these changes while still maintaining a relatively isothermal reactor. It is a good idea to try to get your cooling water stream "COOL_OUT" to be all vapor at the same temperature of its input counterpart. Also be sure you have enough cooling water to cool the coolant stream. (Note: the cold water is very cold; it would be difficult to get a utility provider to inexpensively sell you this stream) In one page, summarize the following (you won't be able to do this with a simple printout from Aspen): Changes (if any) in reactor temperature (inlet vs. outlet). VA production, overall reaction ratio (2*VAout/CO2out), and reactor conversion (VAout/AAin). Coolant and cooling water flowrates. Heat exchanger configuration.

http://www.che.utexas.edu/~che473k/aspen/aspentutor4.htm

2005-2-24


				
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