masterThesis
Avaliação térmica dos resíduos da destilação atmosférica das blendas - biodiesel/diesel
Fecha
2012-11-28Registro en:
CAMPOS, Letícia de Oliveira. Thermal evaluation of atmospheric distillation
residues of blends - biodiesel / diesel. 2012. 236 f. Dissertação (Mestrado em Pesquisa e Desenvolvimento em Ciência e Engenharia de Petróleo) - Universidade Federal do Rio Grande do Norte, Natal, 2012.
Autor
Campos, Letícia de Oliveira
Resumen
The worldwide concern regarding the use of sustainable energy and preserving the
environment are determining factors in the search for resources and alternative sources
of energy and therefore fuel less aggressive nature. In response to these difficulties
Biodiesel has emerged as a good solution because it is produced from renewable
sources, produces burns cleaner and is easily reproducible. This work was synthesized
with biodiesel oil, sunflower via homogeneous catalysis in the presence of KOH, with
and without the use of BHT and subsequently added to the blends BX (a proportion of
biodiesel X = 5, 10, 15 and 20 %). Atmospheric distillation of the analysis, performed
in blends with and without BHT were collected residue generated by each sample and
performed a study heat from the thermogravimetric analysis at a heating rate of 10
°C*min-1, nitrogen atmosphere and heating to 600 °C. According to the specifications
of Resolution N 7/2008 for biodiesel, it was found that the synthesized material was in
accordance with the specifications. For blends showed that the samples are in
accordance with the Resolution of ANP N 42/2009. From the TG / DTG curves of the
samples of biodiesel, blends and waste can be seen that these show a single loss of
thermal decomposition concerning constituents present in each sample. The blends
without BHT with ratios of 5%, 10% and 15% biodiesel showed a lower amount of
waste (1,07%; 1,09% e 1,10%) to mineral diesel (1,15%). Therefore, it is concluded
that the addition of biodiesel with diesel mineral can improve some physico-chemical
parameters, but also, depending on the added amount, decreasing the amount of waste
generated. This fact is of great importance because the carbonaceous residue can cause
problems in mechanical equipment and parts for vehicles, causing more frequent
maintenance, and this is not desirable