CFD modeling of asphaltene deposition rate from crude oil

Haghshenasfard M. and Hooman, Kamel (2015) CFD modeling of asphaltene deposition rate from crude oil. Journal of Petroleum Science and Engineering, 128 24-32. doi:10.1016/j.petrol.2015.01.037


Author Haghshenasfard M.
Hooman, Kamel
Title CFD modeling of asphaltene deposition rate from crude oil
Journal name Journal of Petroleum Science and Engineering   Check publisher's open access policy
ISSN 0920-4105
1873-4715
Publication date 2015-04-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.petrol.2015.01.037
Open Access Status
Volume 128
Start page 24
End page 32
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Abstract In this work, rate of asphaltene deposition from crude oil flowing under forced convection through a vertical pipe have been investigated using computational fluid dynamics (CFD). Effects of operating conditions such as surface temperature, Reynolds number, asphaltene concentration and surface roughness on the heat transfer coefficient, thermal resistance, and asphaltene deposition rate are studied numerically. For smooth pipe, the results showed that deposition rate of asphaltene decreases as crude oil velocity increases while it increases with increasing the surface temparature and flocculated asphaltene concentration. According to the results, by increasing the crude oil velocity from 0.6 to 1.6 m/s, the thermal resistance reduced to 62%. Also by increasing the concentration of flocculated asphaltene from 3.5 to 5.5 kg/m3, reduction in the heat transfer coefficient ratio is 4.5%, while the rate of asphaltene deposition and thermal resistance increases to 18.3%, and 17%, respectively. These are in agreement with previously published experimental results and theoretical models. The simulation then was extended to consider the wall roughness effects on asphaltene deposition rate. It was observed that increasing the wall roughness reduces the deposition. However, the deposition rate plateaus with further increase of the wall roughness beyond 0.2 mm, which is just under 1% of the pipe diameter.
Keyword Crude oil
Asphaltene deposition
Fouling
Computational fluid dynamics (CFD)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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