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Évaluation énergétique du gaz de synthèse comme combustible pour les centrales électriques à turbine à gaz régénérative.

Energetic assessment of syngas fuel for regenerative gas turbine power plants.

Numéro : 2561

Auteurs : REU C. J., SIDDHARTH P., ELHADI A. M.

Résumé

Wood chips available in Sudan can be successfully used in gasification process on the same basis as bio-renewable energy resources. Simulation models were used to characterize the gasification process integrated with a regenerative gas turbine unit. As observed, at low ambient temperatures, equivalence ratio growth at low levels has significant reducing effect on the specific fuel consumption (SFC) of the regenerative gas turbine (RGT) power plant. The specific
fuel consumption of the RGT power plant remains low at higher gasification pressures. As observed, the higher the wood chips of Acacia syngas rate, the more air is required to complete the gasification reactions, depending on the moisture content of the feed biomass rates. In addition, results observed that, at optimum air equivalence ratio (ER), the higher the biomass moisture content, the lower the gasifier’s air low rate. Results revealed that, the combustor heat
rate remains low at higher gasification pressure. At low ambient temperature and growth level of the ER, results observed gradual decreases of the RGT combustor heat rates. Results verified that, for RGT pant at low ambient temperatures, heat rates remain low at lower gasification temperature, and higher heating value of the syngas. The RGT thermal efficiency remains low at higher gasification temperatures. The CO, H2, CH4 mole fractions at the syngas final product show decreases amid increasing of the syngas rates and remain high at lower gasifier’s ER. Moreover, results observed that, increasing of the Acacia wood chips syngas rate has led to decrease sharply the RGT thermal efficiency due irreversibilities. Results show that ER growth at low level increases the RGT power plant to an optimum limit. Results concluded that at lower level of ER and for constant syngas rate, temperature, pressure, and low compressor inlet temperature the RGT power is higher at lower gasifier efficiency due to the excess amount of wood
chips, whereas at moderate and higher rates of the gasifier’s air ER, the RGT power is higher at higher gasifier efficiency.

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Pages : 10 p.

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Détails

  • Titre original : Energetic assessment of syngas fuel for regenerative gas turbine power plants.
  • Identifiant de la fiche : 30030772
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 2022

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