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ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
AMMONIA PRODUCTION FROM ENERGY USE OF OIL SLUDGE GASIFICATION
Submission Author:
York Castillo Santiago , SP
Co-Authors:
York Castillo Santiago, Leandro Alcoforado Sphaier, Karoline da Costa Rocha Fernandes Ferreira , Aldemar Martínez
Presenter: York Castillo Santiago
doi://10.26678/ABCM.ENCIT2022.CIT22-0125
Abstract
This paper focuses on the study of oil sludge gasification and the potential use of syngas produced for ammonia production. For this purpose, a computational model of gasification was developed and validated to evaluate the influence of the air/steam mixtures as gasification agent on parameters such as cold gas efficiency, composition and low heating value (LHV) of syngas. The results show that as the gasification temperature rises, the volumetric fraction of H2 increases to 24.9% at 1380 °C and then decreases to 21.5% at 1380, while the CO augmented as the gasification temperature rises. On the other hand, the syngas LHV ranged between 5 and 10 MJ/Nm3 for equivalence ratio higher than 0.3 and steam/OS ratio values between 0.5 and 1.5 kg steam/kg OS, indicating that a greater addition of gasification agent favored the reforming and thermal cracking reactions of the heavier organic fractions contained in oil sludge. Subsequently, the produced syngas was used for ammonia synthesis, where 1.41 L NH3/kg-oil sludge was obtained at 30 bar. Based on the syngas properties, it is verified that heavy oil gasification could be a viable alternative that could efficiently transform a fuel from a refinery into add-value products.
Keywords
Gasification Process, Energy Use, Oil sludge, Ammonia production
