- Thermodynamic Calculation of distillation Column NewPriS TODIS - Optimal Thermodynamic Calculation of Distillation Column If you are scientificMessage 1 of 1 , May 4, 2001View Source
Thermodynamic Calculation of distillation Column NewPriS
TODIS - Optimal Thermodynamic Calculation of Distillation Column
If you are scientific researcher, student, spechialist in Chemistry or Chemical engeneering you know that rigorous calculation of distillation is a very complex math task. To start the calculation you need to know many information about the object - the number of plates, pressure drop for plates, hydrodynamic characteristics of flows and others. But on the design stage this information may be is not known. In this case System Information approach unfortunately not so well-known abroad is very useful. On this page you can find free Web-version of program TODIS for very fast short-cut calculation of distillation column. The based equations were obtained with the help of maximization of information entropy and allow to calculate concentration of exit flows when only composition of feed and concentration of key component in one of exit flow are defined. And that is all ! The rest parameters will be defined as thermodynamic optimal. The criteria of optimallity is separation power determined as difference between input and output information entropy of flows.
The Web version is now limited to ideal solutions and column with one feed ( Full Fractionator), but it is not principle for the approach. This software is absolutely free and it seems may be interesting not only for familiarization but for comparison with complex calculation method. As our researches showed there is practical no difference between complex plate-to plate simulation and short-cut method on the stage of defining output composition and slight difference on the stage of calculating compoents profile through the column.
The program TODIS ( beta 1.0) calculate distillation column with up to 20 components from databank of 480 components.
There is an ability to operate with different units of input and output parameters.
When calculation is produced, current parameters are stored for concrete user in his computer ( in the Cookies), so after some period you can return to your calculation without enter the data.
To produce thermodynamic calculation of distillation column just click here (By the way, I have'not found any web-oriented free calculation of distillation, so it is the unique). The program calculates composition of the flows and optimal flow rates of distillate and bottom product, minimal reflux ratio, concentrations in internal sections of column, but ...
This is just the beginning !
The next step is to modify the program for implement nonideal mixtures and the main, calculate thermodynamic optimal surface of mass transfer !!! It is nonsence in classical thermodynamic, but with the approach of extended version of thermodynamic it become real.All algorithms exists, it is necessary only to redesign it to the web.
Our researches show that if you install adding plates to the column and the surface of mass transfer wil be higher than calculating thermodynamic optimal surface, this plates will not work and there will be constant concentration zone in the column. So, the method to calculate mass transfer surface already exists, the time is necessary to recognize it.
I am very interested in developing this new revolutionaly approach to practice of industrial calculation. It is great idea to use this method in creating computer industiral column simulator, may be it is possible to base dynamic simulation with this equations. So if you are interested in this direction please send me a letter.
© Alexander Maikov 1999