Journal of Petroleum Science and Technology

Journal of Petroleum Science and Technology

Experimental study on viscosity reduction of Iranian heavy export crude oil by using imidazolium based ionic liquids supported on ZIF-8 organic framework

Document Type : Research Paper

Authors
Ali Asghar Pasban 1
Ali Reza Asghari 1
Ali Akbar Miran Beigi 2
Maryam Rajabi 1
1 Department of Chemistry, Semnan University, Semnan, Iran
2 Oil Refining Research Division, Research Institute of Petroleum Industry, (RIPI), Tehran, Iran
10.22078/jpst.2024.5102.1874
Abstract
Chemical - Thermal Technology is used to upgrade the quality and to decrease the viscosity of Iranian extra-heavy crude oil in atmospheric pressure. In this present study, quality preparation of [OMIM][NTf2]-ZIF-8 (IL@ZIF-8) nanostructures were performed solvothermal by using an oil-soluble long chain Ionic Liquids, [OMIM][NTf2] and a zeolitic imidazolate framework, ZIF-8. This complex was used in the thermal cracking of heavy oil as a chemical additive. The injection of a small amount of the IL@ZIF-8 into extra-heavy oil caused the production of gaseous compounds, naphtha, middle distillates, lubricating oil,  and tar. The viscosity measurement results show an evident viscosity reduction of 91% for extra-heavy oil after chemical-thermal cracking at 370 °C for a maximum of 120 min. The technique is ideally suited for cracking extra-heavy Iranian Crude oils, such as in the Nowrooz-Soroosh oilfields. To our knowledge, no report has been found about the chemothermal cracking of heavy crude oils, especially by using IL@ZIF-8 metal-organic frameworks.
Keywords
IL@ZIF-8
Extra-heavy export crude oil
Chemical-Thermal cracking
Ionic Liquids, Viscosity Reduction
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