Normally undergraduate student projects will involve Aspen Plus or Aspen Properties. To start either of these packages, be sure to look for the corresponding. in 24 Hours. Integrating Aspen Plus into the Chemical Engineering Classroom . Not Recommended: Using lecture time to prepare students for the tutorial. This manual is intended as a guide to using AspenTech’s software. Beginning with Aspen Plus , there is also an XML Results file available from Aspen.
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The computers in the computer lab in Olin Hall should have Windows XP Professional, if not the latest operating system, installed and running, so we will try to base our example on that assumption. Enter the same stage you had been operating at previously. The Pinch Point is the point at which there are the most restrictions in the design tutorail the heat exchanger network.
This should be what you want to increment so that you obtain a change in the flowsheet aspsn, which will be the block variables temperature or pressure. Using the new chosen flowrate, our results are as follows: That means that the tank must have no flow in or out from the time the samples are taken.
Aspen Process Manual
But it’s a terrible idea if you connect to the Internet through your LAN, using a software or hardware router, since it will block File and Printer Sharing. Check the cost, because some items are too project-specific for IPE to pluus, and you may need to research a cost and aepen it in. Usually you will be dealing with an equilibrium or conversion reaction, but a salt precipitation is not out of the question.
This tutorial was produced for educational purposes and any distribution of this material without the expressed written consent of Cornell University is strictly prohibited.
This should be very similar to the manner in which you set up the absorber, except that you now have to include a Reboiler when you get to the Setup page. If you are in a Tuesday group, you will need to find this number or more pertinent information yourself Solution Methodology: On XP professional, the maximum limit is Plastic Pall Rings Packing: Click when you are done. The Solvent Extraction Process Manual contains 8 volumes covering topics that include general principles, liquid-liquid separation fundamentals, solvents, extraction processes, phase separation, equipment, recommended procedures, and related process technology.
This should select all data below it. In other words just make sure you are using absolute pressure unless the units on the right say psig or barg. You will, at the very least, see warnings everywhere. I had written several sets of instructions for solving various problems with Aspen and Icarus and, over the years, we had assembled lots of specific but unorganized answers to questions.
We ended up with a condenser pressure of psia below. The first step in heat integration is to define hot and cold streams.
Here, the hot pinch is The driving force, DTmin, must be chosen to minimize heat exchange area, and maximize energy recovery. One last piece of advice: Here you should see a diagram that looks like the diagram to the right: For having the composition in terms of mole fractions, you must select Mole-Frac from the menu on the right. However, it is always recommended that hand-calculations of these are done before modeling, since there is no real basis for comparison.
Since this is an absorber, the feed and outlet streams all leave either the top Segment 1 of the column or the bottom Segment 11 of it, with the gas entering from the bottom and the liquid from the top.
Modeling Coal Combustion
We will try to show you how to model an entire process, which you could hopefully translate to your own work. Since RX Feed has a bigger Cp value, we will pair the two streams.
One tank would be receiving feedstock, and the other would be providing feedstock to the process.
Finally, set the error Tolerance, which is the allowable difference between the spec and the target, and it is necessary to stop iteration. In this case, starting above the pinch, the biggest hot stream is RX Effluent. First you need to select the piece s of equipment you desire. The methane-rich Residue Gas can then be resold at a higher price than purchased.
On the Variable Definition form, select the category All or Streamsand fill out the required fields under Reference and click Next.
Modeling Coal Combustion
Click OK to map. Trust me, it will save you time in the long run, when you have actually added the recycle stream.
If we were given the percent flooding instead of the column diameter in the problem statement, we could have Aspen calculate the diameter for us by selecting Use calculated diameter. More extensive resources for Pinch Technology can be found at www. This is because the default convention for stream location is Above Segment. That’s not what we want at all! So, we are only initially going to deal with our first main column, the absorber, and not worry about the recycle or the stripper.