Gas emission and efficiency of an engine-generator set running on biogas

Souza, Samuel Nelson Melegari de; Lenz, Anderson M.; Werncke, Iván; Nogueira, Carlos Eduardo Camargo; Antonelli, Jhonatas; Souza, Juliano de

doi:10.1590/1809-4430-eng.agric.v36n4p613-621/2016

Cited by 6 publications

(1 citation statement)

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“…When compared to the data of Naegele et al (2013), in which biogas presented sulfate levels close to zero, the increase of sulfates was inexistent, however, in this study, because of the elevated concentrations of hydrogen sulfide there was an increase in sulfates that limited the oil change to 450 EOH. According to Souza et al (2016), contents of hydrogen sulfide in biogas must be minimized by filtration processes in order to avoid engine wear and contamination. Thus, for the utilization of biogas in engines, an efficient filtration is necessary, with as much reduction of hydrogen sulfide content as possible, as this action will have a direct impact on lubricant oil durability and also on engine durability because of the degrading power of this gas.…”

Section: Comparison Of Biogas and Lubricant Oil Resultsmentioning

confidence: 99%

<b>Analysis of lubricant oil contamination and degradation and wear of a biogas-fed otto cycle engine

et al. 2017

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ABSTRACT. The increasing deployment of biodigesters for the treatment of waste on farms and the use of the biogas generated in the production of energy have highlighted the need for knowing the influence of this fuel on internal combustion engines. This study aimed to analyze the influence of filtrated biogas on lubricant oil contamination and degradation, as well as on engine wear and corrosion. Lubricant oil samples were collected every 75 engine operating hours (EOH) and then correlated between each other and with a sample of new oil, determining the elements present in the biogas that contribute to lubricant oil contamination and degradation, as well as lubricant oil performance in the course of EOH and engine wear. The results demonstrate that hydrogen sulfide affects the performance of the lubricant oil and engine wear. Among the metals, we observed that the copper concentration exceeded the maximum limit recommended in the literature. As for the additives, the variation in concentrations of magnesium impacted on lubricant performance. By monitoring lubricant oil quality were able to extend the engine oil change interval of this study by 50%, what resulted in a savings of 33.3% in the cost of lubricant per hour worked.Keywords: contaminants, biogas, biodigester, biomethane, corrosion.Análise da contaminação e degradação do óleo lubrificante e desgaste de um motor ottolizado alimentado por biogás RESUMO. A crescente implantação de biodigestores para tratamento de resíduos nas propriedades rurais e a utilização do biogás gerado na produção de energia mecânica evidenciaram a necessidade de conhecimento da influência de utilização deste combustível nos motores de combustão interna. Este trabalho teve como objetivo analisar a influência da utilização do biogás filtrado na contaminação e degradação do óleo lubrificante, desgaste e corrosão do motor. Amostras de óleo lubrificante foram coletadas a cada 75 hM (horas de funcionamento do motor), e após correlacionadas dentre elas e com uma amostra de óleo novo, determinando os elementos presentes no biogás que contribuem para a contaminação e degradação do óleo lubrificante, como também o desempenho do lubrificante no decorrer das hM e o desgaste do motor. Os resultados demostraram que o gás sulfídrico influencia no desempenho do óleo lubrificante e no desgaste do motor. Dentre os metais, foi identificado que a concentração de cobre excedeu o máximo recomendado pela literatura, e a elevação da sua concentração teve relação com a elevação de chumbo e estanho, principalmente após as 375 hM. Em relação aos aditivos, foi a variação das concentrações de magnésio que impactou no desempenho do lubrificante. Por meio do monitoramento da qualidade do lubrificante é possível estender o intervalo de troca de óleo do motor do presente estudo em 50%, resultando em uma economia de 33,3% no custo do lubrificante por hora trabalhada.

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Section: Comparison Of Biogas and Lubricant Oil Resultsmentioning

confidence: 99%