Thermovolumetric and thermogravimetric analysis of diesel S10
- 37 Downloads
The volatility characteristic of diesel fuel represents one of the most important properties, directly influencing its ignition temperature, thus being an important information for handling and storage safety. The ASTM D86 standard test method is the most commonly used to evaluate the volatility of a fuel at ambient pressure, being used in this work to analyze a diesel S10 from a Brazilian refinery. Thermogravimetric (TG) analyses and density determinations of the ASTM D86 distillation collected fractions of a diesel S10 were performed. TG analyses were accomplished in open platinum pans and in aluminum pans sealed with pinhole lids, from room temperature to 580 °C at a heating rate of 10 °C min−1, using 50 mL min−1 of nitrogen, as the purge gas. Densities were measured from the respective masses and volumes of the collected fractions, which were used to obtain the corresponding distillation thermogravimetric (TG) and thermovolumetric (TV) curves, as a function of respective boiling temperature. The ASTM D86 results are quite like those obtained by TG/DTG curves of diesel S10, performed in sealed pans with pinhole lids. Due to the density evolution of the collected condensed fractions, the shape of the TV curve when compared to the TG curve may indicate the presence or absence of some typical organic classes usually present in diesel composition, which in the present case indicate that it is composed mainly by paraffinic components.
KeywordsDiesel ASTM D86 TG curve Distilled fraction Thermovolumetric curve
To the Laboratory of Biodiesel Stability Evaluation of the Chemistry School at Federal University of Rio de Janeiro / Brazil and to the Brazilian National Council of Research (CNPq).
- 1.ANP. Oil, natural gas and biofuels statistical yearbook 2018. National Agency for Petroleum, Natural Gas and Biofuels. ANP. 2018. http://www.anp.gov.br/images/publicacoes/anuario-estatistico/2018/anuario_2018.pdf. Accessed 13 Oct 2018.
- 2.Farah MA. Petróleo e seus derivados: definição, constituição, aplicação, especificações, características de qualidade. Selo Editorial: LTG; 2012 (in Portuguese).Google Scholar
- 4.Murta Valle ML. Produtos do setor de combustíveis e de lubrificantes. Publit Companies; 2007 (in Portuguese).Google Scholar
- 5.Brazil. Federal Law Number 11097, from 13 January 2005. Brasilia, Brazil; 2005. https://www.planalto.gov.br.
- 6.Brazil. Federal Law Number 13263, from 23 March 2016. Brasilia, Brazil, establishes the mandatory blending percentages of biodiesel into mineral diesel that is commercialized in Brazil; 2016. https://www.planalto.gov.br.
- 9.ANP. Technical Regulation number 50/2013, Brazilian specifications for on-road diesel fuel, established by Brazilian National Agency for Petroleum, Natural Gas and Biofuels (ANP); 2013. https://www.anp.gov.br. Accessed 19 Jan 2018.
- 10.ASTM D613. Standard test method for cetane number of diesel fuel oil. West Conshohocken: ASTM (American Society for Testing and Materials) International; 2017. p. 1–18.Google Scholar
- 11.ASTM D93. Standard test methods for flash point by small scale closed cup tester. West Conshohocken: ASTM (American Society for Testing and Materials) International; 2013. p. 1–10.Google Scholar
- 12.ASTM D445. Standard test method for kinematic viscosity of transparent and opaque liquids (and calculation of dynamic viscosity). West Conshohocken: ASTM (American Society for Testing and Materials) International; 2016. p. 1–16.Google Scholar
- 13.ASTM D4052. Standard test method for density, relative density, and API gravity of liquids by digital density meter. West Conshohocken: ASTM (American Society for Testing and Materials) International; 2018. p. 1–9.Google Scholar
- 14.ASTM D86. Standard test method for distillation of petroleum products at atmospheric pressure ASTM D-86, vol. 5. West Conshohocken: ASTM (American Society for Testing and Materials) International; 2007. p. 1–23.Google Scholar
- 15.Totten GE, Westbrook SR, Shah RJ. Fuels and lubricants handbook: technology, properties, performance, and testing., ASTM manual series: MNL37WCDWest Conshohocken: ASTM; 2013.Google Scholar
- 17.Rand Salvatore J, Verstuyft Allen W. Manual significance of test for petroleum products. 9th ed., ASTM stock number: MNL1-9THWest Conshohocken: ASTM; 2018.Google Scholar
- 34.Dos Santos APF, da Silva KK, D’ Avila LA, Dweck J. Characterization of fuel detergent–dispersant additives by thermogravimetry. J Therm Anal Calorim. 2016;131:1–6.Google Scholar
- 40.Perry RH. In: Perry Robert H, Green Don W, Maloney James O’Hara, editors. Perry’s chemical engineers’ handbook. 7th ed. New York: McGrawHill; 1997.Google Scholar
- 41.Dweck J. Significant experimental factors in thermogravimetry—Internal Publication of Thermal Analyses Course of Materials and Processes, Chemical School—Federal University of Rio de Janeiro; 2015 (in Portuguese).Google Scholar