Decentralized Valorization of Associated Petroleum Gas via Modular Oxy-Combustion and Carbon Capture: A Scalable Strategy for Global Flaring Reduction.
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| Title: | Decentralized Valorization of Associated Petroleum Gas via Modular Oxy-Combustion and Carbon Capture: A Scalable Strategy for Global Flaring Reduction. |
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| Authors: | Chiriboga, Gonzalo1 (AUTHOR) wgchiriboga@uce.edu.ec, Núñez, Brandon1 (AUTHOR), Montero-Calderón, Carolina1 (AUTHOR), Gutiérrez, Christian1 (AUTHOR), Almeida, Carlos1 (AUTHOR), Vega, Michael A.1 (AUTHOR), Carvajal-Chávez, Ghem1 (AUTHOR) |
| Source: | Energies (19961073). Apr2026, Vol. 19 Issue 8, p1949. 24p. |
| Subject Terms: | *Oil fields, *Flare gas systems (Chemical engineering), *Carbon sequestration, *Energy consumption |
| Abstract: | This study evaluates the technical feasibility of deploying containerized oxy-combustion power modules with integrated CO2 capture in remote Ecuadorian Amazon oil fields. Associated petroleum gas is conditioned with a 35 wt.% diethanolamine (DEA) sweetening stage specifically implemented to remove H2S and reduce acid-gas loading prior to combustion, improving fuel quality and protecting downstream equipment while increasing methane mole fraction for combustion. System efficiency is governed by stoichiometric oxygen demand, with methane requiring 2 mol O2/mol fuel and hexane requiring 11 mol O2/mol fuel; favoring methane-rich streams reduces ASU energy demand, enhances combustion performance, and lowers separation costs. The combined oxy-combustion cycle attains a thermal efficiency of 33.10% and an exergetic efficiency of 39.98%. Major energy penalties arise from the cryogenic air separation unit and the CCS train, yet operational tuning of CO2 recirculation and steam flow could raise thermal efficiency by up to 2%. The ASU produces oxygen at 96.67% purity with an energy consumption of 0.385 kWh/kg O2, while the CCS achieves 99.99% CO2 capture at 0.41 kWh/kg CO2. Sourcing gas from three production blocks provides flexibility to accommodate supply variability. The modular 272 MW unit demonstrates viability for off-grid power supply, routine flaring reduction, and scalable acid-gas valorization in frontier oilfields. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | This study evaluates the technical feasibility of deploying containerized oxy-combustion power modules with integrated CO2 capture in remote Ecuadorian Amazon oil fields. Associated petroleum gas is conditioned with a 35 wt.% diethanolamine (DEA) sweetening stage specifically implemented to remove H2S and reduce acid-gas loading prior to combustion, improving fuel quality and protecting downstream equipment while increasing methane mole fraction for combustion. System efficiency is governed by stoichiometric oxygen demand, with methane requiring 2 mol O2/mol fuel and hexane requiring 11 mol O2/mol fuel; favoring methane-rich streams reduces ASU energy demand, enhances combustion performance, and lowers separation costs. The combined oxy-combustion cycle attains a thermal efficiency of 33.10% and an exergetic efficiency of 39.98%. Major energy penalties arise from the cryogenic air separation unit and the CCS train, yet operational tuning of CO2 recirculation and steam flow could raise thermal efficiency by up to 2%. The ASU produces oxygen at 96.67% purity with an energy consumption of 0.385 kWh/kg O2, while the CCS achieves 99.99% CO2 capture at 0.41 kWh/kg CO2. Sourcing gas from three production blocks provides flexibility to accommodate supply variability. The modular 272 MW unit demonstrates viability for off-grid power supply, routine flaring reduction, and scalable acid-gas valorization in frontier oilfields. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961073 |
| DOI: | 10.3390/en19081949 |
