Avaliação das incertezas associadas à determinação do parâmetro de solubilidade de Hildebrand de petróleos

Química Nova

Lyzette Gonçalves Moraes De Moura²  Marlus Pinheiro Rolemberg²  Antonio Carlos Da Silva Ramos²  Maria De Fátima Pereira Dos Santos¹  Evaldo López Zilio¹ 

[1] ,Universidade Federal do Maranhão Departamento de Tecnologia Química São Luís MA ,Brasil

关键词: asphaltenes;    Hildebrand solubility parameter;    uncertainty propagation;   

DOI  :  10.1590/S0100-40422011000200011

来源: SciELO

【 摘 要 】

Asphaltenes are fractions of crude oils that can precipitate and one of the parameters used in the prediction of the conditions in which this phenomenon occurs is the Hildebrand solubility parameter. In this work, it was evaluated the uncertainty propagation in the experimental determination of the solubility parameter of different crude oils, calculated from data of the asphaltenes precipitation by the addition of n-heptane, identified by optical microscopy. It was verified that the solubility parameter of an oil and the associated uncertainty are specific, being recommended that, whenever viable, it is determined parallel both, conferring higher credibility to the results.

【 授权许可】

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