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Multiobjective Optimization of a Hydrogen Production System with Low CO2 Emissions
- Wu, Wei, Liou, Yan-Chi, Zhou, Ya-Yan
- Industrial & Engineering Chemistry Research 2012 v.51 no.6 pp. 2644-2651
- algorithms, carbon dioxide, engineering, greenhouse gas emissions, heat recovery, hydrogen production, methane, steam, synthesis gas, temperature
- Since the steam methane reforming usually increases the temperature of stream and concentration of CO₂, this work introduces a CO₂ reformer that can produce syngas by consuming CH₄ and CO₂. In the proposed configuration, a CO₂ reformer is directly added between the steam methane reforming (SMR) process and a high-temperature shift (HTS) converter. To pursue the process optimization with respect to maximizing hydrogen production and minimizing carbon dioxide emission, a nondominated sorting genetic algorithm-II (NSGA-II) is employed to solve a constrained multiobjective optimization (MOO) problem. Finally, the proposed system configuration with heat recovery manner is validated by an Aspen HYSYS simulator.