Results 81 to 90 of about 7,502 (225)

Supercritical water deasphalting and desulphurization of heavy fuel oil with comprehensive molecular‐level analysis and techno‐economic analysis

The Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 1727-1742, April 2026.
Supercritical water deasphalting. Abstract The removal of sulphur from heavy fuel oil (HFO) is essential to address environmental concerns and comply with the stringent regulations imposed by the International Maritime Organization (IMO) in 2020. Previously, the acceptable limit for sulphur was 3.5 wt.%, but it was recently changed to 0.5 wt.%.
Biswajit Saha, Sundaramurthy Vedachalam, Nathalie Baquerizo, Ajay K. Dalai, Aiping Chen, Saumitra Saxena, Bassam Dally   +6 more
wiley   +1 more source

Asphaltene Stability of Some Iraqi Dead Crude oils

Journal of Engineering, 2019
Asphaltene is one of the fractions of the crude oil which is soluble in aromatics such as benzene or toluene and insoluble in alkane such as n-heptane, n-pentane or petroleum ether (mixture of alkane compounds).
Ali Anwar Ali, Mohammed S. Al-Jawad, Abdullah A. Ali   +2 more
doaj   +1 more source

Experimental and mechanism study on the synergistic influence of asphaltene and pressure on the flow and rheological characteristics of waxy oil

Journal of Pipeline Science and Engineering
In underground reservoirs and offshore oilfields, the production and transportation of waxy oil inevitably involve pressure and asphaltene environment.
Yun Lei, Dehua Lai, Haoran Zhu, Rui Dou, Jiangbo Wen, Hanwen Chen, Haoping Peng, Pengfei Yu   +7 more
doaj   +1 more source

Enhancing asphaltene precipitation modeling by cubic-PR solid model using thermodynamic correlations and averaging techniques

Petroleum Science, 2019
Cubic equation-of-state solid models are one of the most widely used models to predict asphaltene precipitation behavior. Thermodynamic parameters are needed to model precipitation under different pressures and temperatures and are usually obtained ...
Aktham E. Shoukry, Ahmed H. El-Banbi, Helmy Sayyouh   +2 more
doaj   +1 more source

Asphaltene biotransformation for heavy oil upgradation

, 2021
Globally, the reserves of heavy crude oil are seven times more abundant than that of light crude, and yet, they are underutilized because of their high viscosity and density, which is largely due to the presence of large amounts of asphaltenes ...
Skiadas, Ioannis, Ioannis Skiadas, Manoj Kumar, Saroj Mishra, Arif Nissar Zargar, Zargar, Arif Nissar, Kumar, Ankur, Kumar, Manoj, Srivastava, Preeti, Ankur Kumar, Anurag Sinha, Mishra, Saroj, Preeti Srivastava, Sinha, Anurag   +13 more
core   +1 more source

Some biogenic-related compounds occluded inside asphaltene aggregates

, 2009
International audienceThe occluded compounds inside asphaltene aggregates were released from 16 asphaltenes through mild degradation processes oxidized by the H 2O2/CH3COOH system.
Liao, Zewen, Zhang Lvhui, Liao Zewen, Zhang, L., Creux, Patrice, Yang, C., Yang Chupeng, Creux Patrice   +7 more
core  

EKSTRAKSI ASPHALTENE DARI MINYAK BUMI [PDF]

, 2009
Analisis elemental yang menentukan kadar-kadar unsur karbon, hidrogen, belerang, nitrogen, oksigen dan logam-logam tidak memberi gambaran mengenai karakter dan sifat minyak bumi.
Permatasari, Gita, Siswadi, Adharatiwi Dida   +1 more
core  

Mechanistic Investigation of Asphaltene Deposition

, 2016
Asphaltenes are the most polar molecules in crude oil and are responsible for a large number of deposition and fouling problems in the oil industry.
Krittin Binabdullah (3218685), Pantid Phichphimok (3218688), Apirak Hanpan (3218682), H. Scott Fogler (1276908), Cláudio Vilas Bôas Fávero (1935907)   +4 more
core   +1 more source

Molecular Interactions between Asphaltene and Surfactants in a Hydrocarbon Solvent: Application to Asphaltene Dispersion

, 2020
Heavy oil and bitumen supply the vast majority of energy resources in Canada. Different methods can be implemented to produce oil from such unconventional resources.
Zhangxin Chen, Mohammadali Ahmadi
core   +1 more source

Deposition and removal studies of asphaltene from the glass surface [PDF]

, 2021
Asphaltene deposition in crude oil reservoirs and transportation lines affects the oil recovery and incurs additional operational costs. The current study discusses the removal of asphaltene from inorganic silica surfaces using hydrodynamic forces.
Rizvi, Syed Haider Abbas, Phirani, Jyoti, Yadav, Anil, Singh, Vikram   +3 more
core