Two-Step Pyrolysis of Refinery Fuel Oil to Olefins and Fuel

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SHIRVANI SAMIRA; GHASHGHAEE MOHAMMAD; Ghambarian Mehdi

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Journal: Nashrieh Shimi va Mohandesi Shimi Iran Year:2020 | Volume:38 | Issue:4 (94) Page(s): 243-252

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Title

Two-Step Pyrolysis of Refinery Fuel Oil to Olefins and Fuel

Author(s)

SHIRVANI SAMIRA | GHASHGHAEE MOHAMMAD | Ghambarian Mehdi | Issue Writer Certificate

Keywords

Fuel oilQ1

Thermal crackingQ1

KineticsQ2

OlefinQ1

PyrolysisQ1

Thermal AnalysisQ1

GasolineQ2

Gas oilQ1

Abstract

In the present study, an efficient two-step Thermal cracking process has been investigated for the conversion of refinery Fuel oil to value-added products viz. Olefins and liquid fuels. In the first step of the process, the low-ranked heavy feedstock was thermally treated in the liquid phase at completely mild operating conditions in order to remove undesirable species and obtain suitable products which indicates high potential for utilization as a feedstock in Olefin units. The thermal treatment process was carried out at three different temperatures of 360, 400, and 440 ° C. The activation energy was found to be 68. 5 kJ/mol on the basis of the Arrhenius equation. Thermal Analysis using the isoconversional Kissinger model at four temperature programs on the heavy feedstock led to an activation energy of 59. 9 kJ/mol for the decomposition of the refinery Fuel oil, being in reasonable agreement with that from the Arrhenius equation. More than 90% of the heavy feedstock was converted at 440 ° C to products (mainly liquid products with a yield above 76 wt%). The obtained product was applied as a proper feedstock in the subsequent Thermal cracking step, which was performed in vapor phase within a wider range of temperatures (550– 750 ° C). The yield of Olefins in this step at 750 ° C was more than 88 wt% based on the dry gas composition and more than 45 wt% based on the applied feedstock. By decreasing the temperature, the reaction tended to produce liquids than gases particularly Gasoline and diesel fuel, such that at 550 ° C, only 1 wt% of the obtained products were gaseous.

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APA: Copy

SHIRVANI, SAMIRA, GHASHGHAEE, MOHAMMAD, & Ghambarian, Mehdi. (2020). Two-Step Pyrolysis of Refinery Fuel Oil to Olefins and Fuel. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), 38(4 (94) ), 243-252. SID. https://sid.ir/paper/402537/en

Vancouver: Copy

SHIRVANI SAMIRA, GHASHGHAEE MOHAMMAD, Ghambarian Mehdi. Two-Step Pyrolysis of Refinery Fuel Oil to Olefins and Fuel. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)[Internet]. 2020;38(4 (94) ):243-252. Available from: https://sid.ir/paper/402537/en

IEEE: Copy

SAMIRA SHIRVANI, MOHAMMAD GHASHGHAEE, and Mehdi Ghambarian, “Two-Step Pyrolysis of Refinery Fuel Oil to Olefins and Fuel,” NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), vol. 38, no. 4 (94) , pp. 243–252, 2020, [Online]. Available: https://sid.ir/paper/402537/en

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