Learn Aspen Plus in 24 Hours by Thomas A. Adams II & Thomas A. Adams II

Author:Thomas A. Adams II & Thomas A. Adams II [Adams II, Thomas A.]
Language: eng
Format: azw3
ISBN: 9781260116458
Publisher: McGraw-Hill Education
Published: 2017-09-07T04:00:00+00:00

Q5) How long does it take to achieve 98% conversion of allyl alcohol using the k obtained from experimental data?

Q6) How much of the propionate in kg is there in the reactor at the end of 200 seconds using the k obtained from experimental data?

PART 3: EXPANDING TO PLUG FLOW REACTORS

At this point, you have successfully taken experimental data from a laboratory batch reactor and found a suitable kinetic model. The nice thing about kinetic equations is that they apply to other types of reactors. So let’s simulate a plug flow reactor and see if we can get a similar result.

Use Aspen Plus to determine how big of a liquid plug flow reactor will be needed to achieve 98.5% conversion of allyl alcohol and the same inlet conditions. Use the experimentally-determined power law pre-exponential coefficient. Keep the diameter of the reactor at 40 cm and operate isothermally at 32°C.

The RPlug model can be used for this analysis. Make sure your valid phases are set to Liquid-Only.

Note, you may find it helpful to reinitialize and rerun if you notice that results are not changing like they should.

Q7) What is the length of the PFR that achieves 98.5% conversion of allyl alcohol? (Hint: consider using a design spec—review Tutorial 3 to see how to set it up.)

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