Project Description
I need a detailed Aspen HYSYS model that mirrors my pilot-scale absorber/stripper running 30 wt % MEA on natural-gas flue gas. You will start from the experimental runs I provide (gas composition, column dimensions, tray efficiency, heat-duty readings) and reproduce current performance in the simulator. Once the base case is validated, the task is to drive a systematic optimisation of solvent flow rate, temperature and pressure to minimise specific reboiler duty while keeping CO₂ capture ≥ 90 % and meeting product CO₂ purity targets.
Because the work is simulation-centric, please anchor every assumption in HYSYS, document thermodynamic packages chosen, and keep a clear trail of the optimiser settings you test. A short sensitivity scan is acceptable if it helps converge on global optima faster; however, the final results must reflect a full optimisation, not a single-factor study.
Deliverables
• Aspen HYSYS file with all case studies and the final optimised case saved as separate scenarios
• Concise technical report (≈10 pages) detailing methodology, validation against experimental data, optimisation logic, and key plots (Pareto curves, energy vs. capture rate, etc.)
• Summary table highlighting base-case vs. optimised performance: capture rate, reboiler duty, solvent circulation, column temperatures/pressures
Acceptance criteria
– Simulated base case matches experimental CO₂ removal within ±3 %
– Final configuration shows at least 15 % reduction in specific reboiler duty compared with the validated base case
– All files open and run error-free in Aspen HYSYS (version noted in the report)
Feel free to suggest additional variables if they can unlock further energy savings, but keep the primary focus on the three parameters listed above.