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Título del libro: Proceedings Of The 23rd International Conference On Efficiency, Cost, Optimization, Simulation, And Environmental Impact Of Energy Systems, Ecos 2010
Título del capítulo: Exergoeconomic analysis of a cryogenic process to purify natural gas

Autores UNAM:
RICARDO RIVERO RODRIGUEZ;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2010

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Palabras clave:

Costs; Cryogenics; Energy efficiency; Environmental impact; Equipment; Exergy; Natural gas; Optimization; Thermodynamics; Cryogenic process; Energy intensive equipments; Energy-efficient process; Exergoeconomic analysis; Exergy improvement potentials; Irreversibility; Non-renewable natural resources; Performance parameters; Cost benefit analysis

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Resumen:

In order to have more energy efficient processes for obtaining purified natural gas (PNG) it is important to improve the cryogenic processes needed to separate this non-renewable natural resource. In this paper a typical turbo-expansion cryogenic process is analyzed in which hydrocarbons are separated by a demethanizer column, previously cooling the dry sweet gas. An exergy analysis has been conducted in order to obtain three relevant exergy performance parameters: the Irreversible exergy losses (Irr), the Effectiveness (e) and the Exergy Improvement Potential (Pot). Thermodynamic properties have been obtained using the simulation of the cryogenic process with the HYSYS simulation code. For the exergoeconomic analysis, the estimation of the equipment costs was obtained from different data bases and empirical correlations. For chemical exergy the Szargut's reference model was corrected to reference conditions. The results show that one of the most energy intensive equipment of the process is the demethanizer tower, including its reboiler, but the turbo-expander, the feed tank and feed cooler are very important; also, a mixer and a valve present important values of the exergy improvement potential. From this, new technology could be developed to improve these equipment items and the overall process.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781456303006
Editorial:
Aabo Akademi University

Tipo de producto:
Conference Paper