Catalysts & Chemicals Industries Co., Ltd.

Yuusaku Arima

Katsuhiro Shirono

Hidehiro Higashi

Yoichi Nishimura

Shinichi Yoshida

A two-stage process for hydrotreating asphaltenes and metallic contaminants-containing heavy hydrocarbon oils which comprises a demetallization step using a catalyst composition which is smaller in pore size and less in active metal amount than the conventional demetallization catalysts, and a hydrotreating step using a catalyst composition which is larger in pore size and more in active metal amount than the conventional hydrodesulfurization catalysts or hydrocracking catalysts, said hydrotreating step being located downstream of said demetallization step.

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Fukuoka, Japan

Yuusaku Arima