Processing of Middle East Crude with Canadian Oil Sands Bitumen-derived Synthetic Crude Oil

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  • Sugimoto Yoshikazu
    National Institute of Advanced Industrial Science and Technology (AIST)
  • Aihara Yoichi
    NEDO Fellow, National Institute of Advanced Industrial Science and Technology (AIST)
  • Matsumura Akimitsu
    National Institute of Advanced Industrial Science and Technology (AIST)
  • Ohi Akihiko
    National Institute of Advanced Industrial Science and Technology (AIST)
  • Sato Shinya
    National Institute of Advanced Industrial Science and Technology (AIST)
  • Saito Ikuo
    National Institute of Advanced Industrial Science and Technology (AIST)
  • Yui Sok
    Syncrude Canada Ltd.

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  • 中東原油とカナダ産オイルサンドビチューメンからの合成原油との混合処理

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Abstract

Light (LGO) and heavy or vacuum gas oil (VGO) fractions from mixed Middle East crudes and respective fractions from a typical Canadian oil sands bitumen-derived synthetic crude oil (SCO) were blended at various ratios (up to 40%) and hydrotreated to investigate the kinetics of sulfur and nitrogen removal, and product quality. Hydrotreatment was carried out in down-flow micro reactors over commercially available NiMo/Al2O3 and CoMo/Al2O3 catalysts, varying reactor temperature (350-390°C), pressure (5-10 MPa), and space velocity (1-6 h−1). Blending the LGO with SCO enhanced both sulfur and nitrogen removal from Middle East crude LGOs. Ultra-low sulfur diesel (< 10 wtppm) meeting the Japanese cetane number (CN) specification could be produced under reasonable operating conditions. Engine tests of the hydrotreated LGOs showed that the emissions of CO, HC, NOx, and PM (particulate matters) from a diesel engine were correlated with the fuel CN and aromatics content. Hydrotreatment of blends of VGO and SCO led to lower sulfur content, but higher nitrogen content in the product oils. The estimated yields of FCC gasoline were slightly decreased by blending the SCO but not significantly.<br>

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