Exergy and Exergoeconomic Analysis of the Gas Subcooled Process for the Brazilian Market: An Approach to Enhance Natural Gas Liquids Recovery
Isidro Alejandro Argueta Flores, Ana Paula Meneguelo, Cintia Marangoni, Yuri Nascimento Nariyoshi, Marcelo Silveira Bacelos
TL;DR
This study evaluates different gas subcooled process designs in Brazil to improve natural gas liquids recovery by analyzing energy efficiency and costs.
Contribution
The novel contribution is the detailed exergy and exergoeconomic analysis of four GSP configurations to identify thermodynamic and economic inefficiencies.
Findings
The Turbo-Expander (TE) configuration achieves the highest exergy efficiency at 71%.
The TEMR setup has the highest exergy destruction cost at US $5687/h due to energy-intensive refrigeration.
The analysis provides actionable insights for improving GSP system design and infrastructure modernization.
Abstract
The gas subcooled process (GSP) is the most widely adopted natural gas liquid (NGL) recovery method due to its adaptability to varying gas compositions and its alignment with the market emphasis in Brazil on lighter hydrocarbons. However, the process remains limited by high energy consumption and significant thermodynamic inefficiencies, particularly in the expansion and separation stages. To address these drawbacks, this research employs a detailed exergy and exergoeconomic assessment of four GSP configurations, termed Turbo-Expander (TE), Joule–Thomson (JT), Turbo-Expander with Mechanical Refrigeration (TEMR), and Joule-Thomson with Mechanical Refrigeration (JTMR), to identify and quantify the sources of energy degradation and their associated economic impacts. The results reveal that the TE configuration achieves the highest exergy efficiency (71%) and demonstrates superior cost…
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Taxonomy
TopicsThermodynamic and Exergetic Analyses of Power and Cooling Systems · Global Energy and Sustainability Research · Process Optimization and Integration