Research Association for Residual Oil Processing

Chiyoda Chemical Engineering & Constr.

Hideo Hashimoto

Toru Takatsuka

Ryuzo Watari

Itaru Matsuo

Shuzo Satoh

Yasuyuki Morimoto

Yoshihiko Shohji

Tamotsu Ito

Hitoshi Maekawa

Takeru Iimori

Yuzo Takahashi

A process of thermally cracking a heavy petroleum oil wherein the heavy petroleum oil is treated successively in a cracking furnace and then in a perfect mixing type tank reactor. The thermal cracking in the cracking furnace is performed at a temperature at the outlet of the cracking furnace of 450.degree.-520.degree. C. with a conversion of at least 60-75% of the overall conversion rate while the thermal cracking in the tank reactor is performed at a temperature of 400.degree.-450.degree. C. a pressure of from ambient pressure to 1 kg/cm.sup.2 for a period of time of less than 30 minutes but not less than 10 minutes while feeding steam having a temperature of 435.degree.-700.degree. C. to the tank reactor in an amount of 8-20% by weight of the heavy petroleum oil fed to the cracking furnace.

Process of thermally cracking heavy petroleum oil

A method of cracking a heavy hydrocarbon oil containing a residual fraction with a boiling point of 538.degree. C. or higher, including contacting the heavy hydrocarbon oil with a fluidized bed of a particulate composite catalyst which includes an amorphous refractory inorganic oxide and a crystalline aluminosilicate dispersed in the oxide and which has a surface area distribution such that the surface area of pores having pore diameters in the range of from three times to six times the average molucular size of the residual fraction is at least 60% of the surface area of pores having pore diameters in the range of 15-150 .ANG..

Fluid catalytic cracking of heavy hydrocarbon oil

Growing community of inventors

Sagamihara, Japan

Hideo Hashimoto