Application of time domain nuclear magnetic resonance (TD-NMR) for study of the distillation curve of petroleum

Author(s)

Montes, Luciana F. ; Morgan, Vinicius G. ; Kock, Flavio V. C. ; Castro, Eustaquio V. R. ; Barbosa, Lucio L.

• Document type: Journal article
• Source: Magnetic Resonance in Chemistry; v. 61, n. 1, p. 8-pg., 2022-10-20.

Abstract

Crude oil distillates are a highly useful industrial product, mainly for energy generation. Unfortunately, they are rarely studied, mainly due to the low accessibility to products directly obtained from the distillation process, which is a laborious, expensive, and time-consuming operation. This work presents and discusses the use of time-domain nuclear magnetic resonance (TD-NMR) as a simple, affordable, and straightforward tool for the development of correlations supported on the transverse relaxation time (T-2) and boiling temperature. The results point out a high convergence between TD-NMR experimental data and the ASTM D2892 method for distillates from light, medium, and heavy oils, with up to 52.20% of accumulated mass and boiling point temperature (T-b) up to 400 degrees C. Furthermore, an unprecedented relationship between T-2 values and the accumulated mass of the distillates is first demonstrated. This new insight opens new perspectives for future prediction of accumulated mass for unknown crude oils, placing the TD-NMR relaxometry as an appeal spectroscopy approach with a potential to meaningfully contribute to the daily refining petrochemical industry field operations. (AU)

• FAPESP's process: 17/02856-0 - Development of Methodologies for Determine Brazilian Petroleum Properties and Onset Precipitation of Asphaltenes.
• Grantee: Lúcio Leonel Barbosa
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/16040-5 - Biorational control of Pest-Insect
• Grantee: Flavio Vinicius Crizostomo Kock
• Support Opportunities: Scholarships in Brazil - Post-Doctoral