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Area of Science:

  • Chemical Engineering
  • Process Chemistry
  • Catalysis

Background:

  • Acid gas management (H2S, CO2) is crucial in industrial processes like refineries.
  • Conventional methods often waste hydrogen from H2S through combustion.
  • Acid gas-to-syngas (AG2S) offers a novel route to convert H2S and CO2 into syngas (H2, CO).

Purpose of the Study:

  • To optimize the Acid Gas-to-Syngas (AG2S) process design.
  • Investigate the impact of H2S/CO2 and H2S/O2 molar ratios on syngas yield.
  • Maximize syngas production while considering downstream application requirements.

Main Methods:

  • Utilized detailed kinetic and thermodynamic modeling for process simulation.
  • Developed accurate surrogate models based on flowsheet simulation data.
  • Employed a Design of Experiments (DoE) approach to explore parameter space.

Main Results:

  • Achieved reliable prediction of H2S conversion, syngas flow rate, and H2/CO ratio.
  • Identified optimal feed molar ratios for maximizing syngas production.
  • Demonstrated a trade-off between syngas quantity and quality (H2/CO ratio).

Conclusions:

  • The AG2S process shows promise for valorizing acid gases into syngas.
  • Feed ratio optimization is key to balancing syngas yield and purity.
  • Low H2/CO ratios may limit direct application in certain downstream processes.