Episode 58 : Tools Integration Examples
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The document outlines tools integration examples for separation processes in chemical engineering, specifically focusing on the separation of a binary mixture of acetone and chloroform as well as the effluent from an esterification reaction involving methanol and acetic acid. It describes the steps involved in using the ICAS software for problem definition, mixture analysis, and simulation of separation techniques, including solvent-based and extractive distillation methods. The document also addresses the challenges and criteria for selecting appropriate solvents, demonstrating the use of CAMD tools in combination with ICAS for process optimization.
Episode 58 : Tools Integration Examples
- 1. SAJJAD KHUDHUR ABBAS Ceo , Founder & Head of SHacademy Chemical Engineering , Al-Muthanna University, Iraq Oil & Gas Safety and Health Professional – OSHACADEMY Trainer of Trainers (TOT) - Canadian Center of Human Development Episode 58 : Tools Integration Examples
- 2. Tools Integration: Examples Lecture 10 Problem Solution Through ICAS
- 3. Tools Integration (ICAS): Two Examples * Separation of a binary mixture of Acetone-Chloroform (Determine the optimal separation scheme) * Separation of the mixture components from the reactor effluent stream containing the reactants and products for esterification of methanol with acetic acid (Determine a feasible separation sequence)
- 4. Separation of Acetone-chloroform *Analyze the mixture to generate more information (this will help to define the issues or intents) * Generate positions for each issue ,and, arguments (criteria) for each position * Test the positions through simulation/analysis and make the selection (step) to obtain the artifact
- 5. ICAS: TOOLS (Use only the underlined features) * Integrated Option/Stand-alone tools Integrated Option Modeling, simulation, toolbox (properties utilities, synthesis, modeling, solvent design, data/parameter estimation) Stand-alone ProPred, ProCamd, ModGen, ProSyn, Data For more details visit http://www.capec.kt.dtu.dk/Software/ICAS-and-its-Tools/
- 6. Problem Solution Steps Problem Definition in ICAS (use of thermo-utilities) 1. Enter the ICAS main screen 2. Draw a stream 3. Select the compounds in the mixture (if compounds are not available in the database, use ProPred to estimate properties) 4. Define the stream (stream specification page) 5. Select calculation options 6. Select thermo-model options 7. Start the computations
- 7. In the following pages, use of ICAS and PDS are illustrated for acetone-methanol. On the ICAS main screen, draw a stream, then click on the icon for compounds selection
- 8. Select acetone and chloroform and click on OK. Double click on the compound to see their pure component properties.
- 9. On return to the ICAS main screen, double click on the stream. The mixture specification screen appears. Give T, P & x. Click on on the top left hand corner
- 10. The calculation options are selected. Simulation is started by clicking on Plots are obtained by clicking on . Before this, options under “what to plot needs to be selected.
- 11. Before the calculations can be started, thermo-models must be selected. First enter the “selection of thermodynamic model” menu. Then click on “Gamma-Phi” and then “Select Liquid Phase Model” and then select Org UNIFAC VLE and then “default” before returning to the “property utility” menu by clicking OK
- 12. VLE-phase diagram (T-xy) for acetone-chloroform is shown below. Repeat these calculations at different pressures, for example, at 0.5 atm and 5 atm and observe if the location of the azeotrope moves
- 13. Tools Integration (ICAS): Example-I Mixture Analysis Results * Azeotropic mixture * Pressure does not affect the azeotropic point significantly * Totally miscible at azeotrope New Issue: Separate Chloroform from Acetone Positions: Distillation (V-L), Pressure-swing distillation(V-L at varying P), Solvent based separation(solvent to break azeotrope) Select (Step): Solvent-based separation Sub-issue: Select/find solvent
- 14. Now we will try to find an extractive agent for separation of the binary azeotrope ! We will use the CAMD-tool for this purpose. Click on “CAMD” from the ICAS main screen. The CAMD main screen will be shown. This screen is divided into two parts. The left side is used to define the problem and the right side is used to show the results. We take the case of Acetone- Chloroform as an example.
- 15. Specify “general problem specification” page. We would like to consider hydrocarbons, alcohols, esters, ketones and aldehydes.
- 16. Specify “mixture properties” page
- 17. Specify “azeotrope/miscibility calculation” page. We do not want any additional azeotrope !
- 18. Click on “GO” to run. Solution found. Information on the solution is given. In the background, the performance of water (defined compound) is shown).
- 19. 2-methyl heptane has been found as a possible solvent
- 20. Now we exit CAMD and go back to the ICAS main screen. Then we will add the new compound to the defined set of compounds. Then we will have a ternary mixture. Return to the ICAS main screen and double click on the stream. The stream specification screen appears. Give T, P and x. Then click on the “thermo” icon. Choose the calculation options and run. We can also go directly to a tool for analysis of ternary azeotropic mixture (note that we have found a “cleaner” solvent - benzene is a known solvent !)
- 21. Tools Integration (ICAS) : Example-I Issue: Solvent-based separation (vapor-liquid) Positions: Benzene (known), 2-methyl heptane (determined through CAMD) Arguments: Both solvents satisfy solubility properties; benzene has environmental problem, 2-methyl heptane does not have such a problem Select (step): Extractive distillation with 2- methyl heptane * We will now test (validate) the selection
- 22. Figure shows the ternary diagram plus location of azeotropes and residue curves obtained through PDS
- 23. The final step of the exercise is to verify by simulation if the new solvent performs as well as benzene in separating the mixture of acetone- chloroform. The flowsheet will consist of two distillation columns. The first column is the extractive distillation column while the second column will recover the solvent and recycle it back to the first column. Where will acetone and chloroform come out from (first column or second column) ? For simulation, Pro-II/Provision has been used as the simulation engine
- 24. Figure shows the flowsheet configuration for extractive distillation
- 25. Computer Aided Process Engineering - Lecture 10 (R. Gani) 24 Steady state simulation results obtained from the simulation engine
- 26. Tools Integration: ICAS (Example-II) * Generate information related to issues, positions, arguments and steps for separation of the reactor effluent for esterification of methanol * Define stream (mixture to be separated) in ICAS * Click on Process Synthesis in the lower tool-bar
- 27. A stream with methanol, methyl acetate, water & acetic acid has been defined
- 28. Within CAPSS, the first step is to perform mixture analysis (click on “mix”). The screen below shows the results. This is used to define issues, positions, etc.
- 29. The next step is binary ratio matrix. This information is used to define position- argument tables. A ratio value >> 1 indicates feasible separation for some separation technique
- 30. The next step is to identify the feasible separation techniques (positions) and why they are feasible (arguments). Note that the feasibility region for the problem can be define now.
- 31. Now we make a selection (step) for the first separation task (issue). Click on “add to flowsheet” to generate the flowsheet. Click on “view” to see mass balance results.
- 32. Through simple mass balance models, separation of stream 1 (issue) by the selected separation technique (position) has been computed. This defines the first artifact.
- 33. Repeating the procedure for each new stream, a feasible flowsheet is generated. Adding the alternatives to each separation task (issue), a super-structure can be generated.
- 34. Tools Integration: ICAS (Example -II) * The final steps involve test/validation (with a simulation engine) * The test validation may include constraints related to environment, energy, operation/control in addition to product purity specifications.
- 35. Thanksfor Watching Please follow me / SAJJAD KHUDHUR ABBAS