Analysis of Solvent-Diluted Bitumen from Oil Sands Froth Treatment Using NIR Spectroscopy
✍ Scribed by Yicheng Long; Tadeusz Dabros; Hassan Hamza
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 450 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0008-4034
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✦ Synopsis
Abstract
Process control and optimization of bitumen froth treatment during oil sands processing require rapid analysis of asphaltene content in bitumen, solvent‐tobitumen ratio (S/B), and the density of solvent‐diluted bitumen. NIR spectroscopy was employed to meet this requirement. The NIR system comprised a spectrometer with no moving parts coupled with a double‐pass transflectance probe via a fiber‐optic cable. Quantitative calibration models were established using partial leastsquares regression in latent variables. The standard errors of calibration were 0.20 wt% for 0 to 20 wt% asphaltenes in bitumen, 1.1 wt% for 20 to 100 wt% asphaltenes in bitumen, 0.1 for S/B of solvent‐diluted bitumen, and 0.0017 g/mL for density of solvent‐diluted bitumen. It was shown that the process conditions could be monitored through the spectral scores from principal component analysis.