Process for thermal cracking of heavy oil

Details Process for thermal cracking of heavy oil Process for thermal cracking of heavy oil

1984-06-20

1987-06-23

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208106, C10G 932

Patent

active

046750983

ABSTRACT:
An improved process for thermal cracking of a heavy oil comprising a step of thermal cracking of the heavy oil in contact with a fluidized bed of heated fine particles and a step of gasification of the coke which has deposited on the fine particles used in the thermal cracking, which gasification is conducted on the fine particles withdrawn from the thermal cracking step by contacting the particles with gas containing molecular oxygen while the particles are fluidized by the gas, the steps being practiced while the fine particles are circulated therebetween is disclosed. The improvement comprises a use of fine particles of a porous material, and conducting the gasification under specified conditions and so as to produce a product gas which is highly reducing. Production of reducing gas at the gasification step whereby the used fine particles are regenerated for further use in the thermal cracking step results in converting by reduction heavy metals which have come from the heavy oil as the feed stock and are accumulated on the fine particles used into a state less harmful for the thermal cracking where the regenerated fine particles are used.

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