Maximizing Liquid Fuel Production from Reformed Biogas by Kinetic Studies and Optimization of Fischer–Tropsch Reactions

Firas K. Al-Zuhairi, Zaidoon M. Shakor and Ihsan Hamawand ()
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Firas K. Al-Zuhairi: Chemical Engineering Department, University of Technology-Iraq, Baghdad 10066, Iraq
Zaidoon M. Shakor: Chemical Engineering Department, University of Technology-Iraq, Baghdad 10066, Iraq
Ihsan Hamawand: Wide Bay Water Process Operations, Fraser Coast Regional Council, Urangan, QLD 4655, Australia

Energies, 2023, vol. 16, issue 19, 1-21

Abstract: In the current work, the operating conditions for the Fischer–Tropsch process were optimized using experimental testing, kinetic modelling, simulation, and optimization. The experiments were carried out using a Ce-Co/SiO 2 catalyst to examine how operating parameters affected the conversion of CO and product selectivity. A power-law kinetic model was used to represent the reaction rates in a mathematical model that was created to replicate the Fischer–Tropsch synthesis (FTS). It was decided to estimate the kinetic parameters using a genetic optimization technique. The developed model was validated for a range of operating conditions, including a temperature range of 200–240 °C, a pressure range of 5–25 bar, a H 2 /CO ratio of 0.5–4, and a space velocity range of 1000–5000 mL/g cat ·h. The mean absolute relative error (MARE) between the experimental and predicted results was found to be 11.7%, indicating good agreement between the experimental data and the predicted results obtained by the mathematical model. Optimization was applied to maximize the production of liquid biofuels (C 5+) . The maximum C 5+ selectivity was 91.66, achieved at an operating temperature of 200 °C, reactor total pressure of 6.29 bar, space velocity of 1529.58 mL/gcat·h, and a H 2 /CO feed ratio of 3.96. The practical implications of the present study are maximizing liquid biofuel production from biomass and municipal solid waste (MSW) as a renewable energy source to meet energy requirements, reducing greenhouse gas emissions, and waste management.

Keywords: biogas; liquid biofuel; Fischer-Tropsch synthesis; kinetic modelling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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