A Novel Photometric Technique to Detect the Onset of Asphaltene Precipitation at Low Concentrations: The Effect of Maltenes and Water
✍ Scribed by Geza Horvath-Szabo; Jacob H. Masliyah; Jan Czarnecki
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 215 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0008-4034
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A photometer was utilized to measure the intensity of scattered light in toluene / heptane / asphaltenes mixtures. On the scattering‐intensity versus heptane‐to‐toluene ratio functions, two linear regions can be observed. The intersection of these regions determines the heptane‐to‐toluene ratio at which the precipitation of asphaltenes starts. The onset of asphaltene precipitation was determined as a function of asphaltene concentration in the presence and in the absence of maltenes as well as water. The onset is dependent on the asphaltene concentration. The presence of water promoted while the presence of maltenes inhibited the precipitation of asphaltenes.