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Process for producing high octane gasoline having lower benzene content and distillation end point with its environmental effect of engine exhaust emissions

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Abstract

In this research, a process is discussed for upgrading reformate and power former in Iraq’s Al-Doura refinery, by reducing the amount of benzene in the gasoline product with simultaneous reduction in the gasoline’s ASTM distillation end point. The process consists of fractionation of the reformate and power former to recover that fraction (90–180°C) of hydrocarbons. This was directly used as gasoline without further conversion. The heavy bottom fraction (180°C—EBP) consisting of the aromatic and non-aromatic hydrocarbons was recovered and used as antiknock additives to gasoline. The other fraction with (IBP—90°C) was used as feedstock to producing benzene by solvent extraction. The reformate and power former fractions (90–180°C) are blended with light straight run naphtha at ratio (75: 25) to producing gasoline as well as Al Doura gasoline. It was found that the amount of benzene was reduced from 1.41 wt % in the original pool to 1.37 and 1.31 in the alternative products. Engine emissions were also reduced when using the alternative products compared with original pool product.

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Abbreviations

ASTM:

American System Testing Method

BTX:

Benzene Toluene Xylene

EBP:

End Boiling Point

FCC:

Fluid Catalytic Cracking

HSRN:

Heavy Straight Run Naphtha

IBP:

Initial Boiling Point

LSRN:

Light Straight Run Naphtha

RON:

Research Octane Number

RVP:

Reid Vapor Pressure

U.S. Pat.:

United State Patent

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Authors and Affiliations

  1. University of Technology, Energy and Renewable Energies Technology Center, Industrial Street, Baghdad, Iraq

    Eman Ali Eh. Sheet

  2. Petroleum Technology Department, University of Technology, Industrial Street, Baghdad, Iraq

    Nabil Majd Alawi

Authors
  1. Eman Ali Eh. Sheet
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  2. Nabil Majd Alawi
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Correspondence to Eman Ali Eh. Sheet.

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Sheet, E.A.E., Alawi, N.M. Process for producing high octane gasoline having lower benzene content and distillation end point with its environmental effect of engine exhaust emissions. Pet. Chem. 54, 157–164 (2014). https://doi.org/10.1134/S0965544114020091

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  • DOI: https://doi.org/10.1134/S0965544114020091

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