Understanding asphaltenes stability in Marine Fuel Oil through separability number

作者：Odhiambo John Otieno; Wei Haijun^*; Li Pinyou; Jia Fengguang

来源：Information Technology Journal, 2013, 12(24): 8510-8513.

DOI：10.3923/itj.2013.8510.8513

• Acceleration regions
• Asphaltene flocculation
• Asphaltene stability
• High transmittance
• Light transmittance
• Marine fuel oil
• Separability number
• Stability reserve

Near Infra-red (NIR) Spectroscopy method was used to analyze NIR light transmittance through Marine Fuel Oil (MFO) samples. This method uses Separability Number as a measure of asphaltene stability inMFO. The separability number as given by the Near Infrared Optical Scanning Machine (NIR-OSM) directly indicates the stability reserve in the MFO. In this study, an in-depth analysis of separability number to understand its science and meaning as a method for determining asphaltenes stability in MFO is presented. An analysis of rates of asphaltene flocculation, aggregation and settlement for six Intermediate Fuel Oil (IFO 180) samples is also presented. It was realized that separability number is a fast and reliable method for asphaltene stability analysis in MFO. The gradient of the graph of line of best fit for average percentage NIR transmittance can also be used to predict the stability reserve in the MFO. The smaller the gradient value;the more stable is the fuel oil. It was also established that there are three regions of NIR transmittance;low transmittance region, acceleration region and high transmittance region. The dominance of any of the three regions directly influences Separability Number obtained for a sample.

• 出版日期2013
• 单位上海海事大学