FINE-TUNING DEA AMINE CONDITIONS FOR EFFICIENT CO₂ REMOVAL IN NATURAL GAS PROCESSING: A SIMULATION-BASED APPROACH
DOI:
https://doi.org/10.11113/jurnalteknologi.v88.24172Keywords:
Amine DEA, Absorption, CO2 Composition, DiethanolamineAbstract
Efficient CO₂ removal from natural gas is essential for meeting pipeline specifications and minimizing corrosion risks. This study investigates the influence of temperature, pressure, and Diethanolamine (DEA) concentration on CO₂ absorption efficiency in the gas sweetening process, using simulations conducted with Aspen HYSYS V.10. Through a comprehensive sensitivity analysis, we explore the interaction between these parameters, revealing that temperature is a primary driver in optimizing DEA’s CO₂ capture capability. Results indicate that elevated temperatures (60–80°C) significantly enhance CO₂ absorption, stabilize performance, and reduce CO₂ composition to near-zero levels, especially at DEA concentrations between 0.4–0.6 mol/mol. While pressure contributes to absorption efficiency, its impact is most pronounced at lower temperatures and diminishes as temperature increases. A critical concentration threshold of 0.4–0.5 mol/mol is identified, beyond which CO₂ removal efficiency markedly improves, particularly at 40°C and higher. The findings suggest that optimal conditions for industrial gas sweetening applications include a temperature of 60–80°C, a DEA concentration of 0.4–0.6 mol/mol, and adjusted pressures to maintain stability without excessive dependency. These conditions enable maximum CO₂ removal, ensure compliance with gas quality standards, enhance operational efficiency, and reduce energy consumption. This study provides actionable insights for the gas processing industry, offers a roadmap for optimizing CO₂ absorption processes through precise parameter control, and supports the development of more sustainable and cost-effective gas sweetening technologies, with implications for improved environmental compliance and enhanced profitability in gas treatment operations.
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