Syngas production from oil sludge gasification and its potential use in power generation systems: An energy and exergy analysis

Aldemar Martínez González, Electo Eduardo Silva Lora and José Carlos Escobar Palacio

Energy, 2019, vol. 169, issue C, 1175-1190

Abstract: Thermo-chemical conversion of oil sludge (OS) is a promising technological alternative for management petroleum waste from crude oil refinery. In this study, an energetic and exergetic analysis has been approached, taking into account the exergy destruction by irreversibilities associated with syngas production and its potential use to power generation. A simulation kinetic model with air/steam mixtures by using Aspen-Hysys 8.6® software was accomplished to evaluate the effect of gasifying agents on OS gasification parameters. It was noted a decreasing trend of produced syngas LHV when equivalence ratio (ER) and steam to oil sludge ratio (SOS) are increased, reaching values between 5 and 10 MJ/Nm3 for ER > 0.30 ratios and SOS between 0.5 and 1.5, while syngas yield can range from 2.0 to 5.0 Nm3 H2/kg OS with hydrogen content close to 25% (mol.%) at the same conditions. Furthermore, when an integrated gasification power generation system and exergy balance were taken into account, exergy destruction was increased almost three times with respect to syngas production from OS gasification process, resulting in 64.4% of total exergy input of integrated plant. Considering the thermodynamic analysis, OS gasification process could become an added value technological alternative for oily waste treatment from the crude oil refining.

Keywords: Oil sludge; Gasification; Energy recovery; Exergy efficiency; Exergy destruction; Power generation (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:169:y:2019:i:c:p:1175-1190

DOI: 10.1016/j.energy.2018.11.087

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