【2026 Simulation Calculation】Calculation of alkaline electrolyzers using Aspen Plus
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This post was last edited by The one on 2026-5-21 13:20. Step 1: Add components. 1.1 Open the software and add the following substances on the Components – Specifications page. Water, oxygen, hydrogen, potassium hydroxide.
1.2 Click on the Electrolyte Wizard, and the following interface will appear. No selections are required on this page; simply click “Next”.
1.3 After this interface appears, we need to select potassium hydroxide from the list of \"Available components\" on the left and move it to the \"Selected components\" list. We should uncheck the default option \"Include salt formation\", check \"Include water dissociation reactions\", and then click \"Next\".
1.4 No selections are required on this page; click “Next”.
1.5 Select the “Apparent Component Method” and click “Next”.
1.6 No selections are required on this page; click “Complete”. At this point, the relevant ions will appear in the component list.
1.7 After that, keep clicking until the message \"Material property input completed\" appears, and then click \"Go to simulation environment\".
1.8 Draw a flowchart on the simulation environment interface.
1.9 Select “Shortcut”; if detailed data on the electrolyzer is available, choose “Rigorous”.
1.10 Click “Specify” and enter the relevant parameters.
1.11 Enter the relevant information for the feed stream FEED.