Relationship between the saturated vapor pressure of alkali solutions and temperature
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Xiaobai has a question as stated in the title: he wants to create a model and simulation for the production of hydrogen through the electrolysis of alkaline water, and for this purpose he needs data on how the saturated vapor pressure of 30% concentration alkali solutions changes with temperature. The paper mentions that this data can be obtained from Aspen; could someone please tell me where and how to export it? Thank you all. It seems that the method of pure component analysis cannot be used
In the Aspen Plus software, the Property Analysis function can be used to obtain data on how the saturated vapor pressure of alkaline solutions (such as sodium hydroxide NaOH solutions) changes with temperature. You can obtain the required information by following these steps: 1. Open the Aspen Plus software. 2. Create a new simulation case. 3. Define the components involved, such as “NaOH” and “H2O”. 4. Select an appropriate property method; for example, “ELECNRTL” is suitable for electrolyte solutions. 5. In the simulation environment, set a NaOH aqueous solution flow at a concentration of 30%. 6. Go to the “Property Sets” section in the “Data Browser”. 7. Create a new property analysis set and select the properties to be analyzed, such as “Vapor Pressure”. 8. Set the temperature range and run the simulation. 9. To view the results, in the “Results Summary”, you can find the data on the saturated vapor pressure at the corresponding temperature. 10. These data can be exported to an Excel spreadsheet for further analysis. Please note that there may be slight differences in actual operation, depending on the version of Aspen Plus you are using and the features it provides. If you are not familiar with the operation process, it is recommended to refer to the official Aspen Plus user manual or online tutorials to carry out simulations and data export more accurately. .