초록 ▼

Disclosed is a process for the thermal cracking of heavy oils, which comprises a thermal cracking step of contacting a heavy oil with a fine powder of a porous material fluidized by a fluidizing gas to mainly obtain a light oil and a regenerating step of gasifying and removing coke adhering to the f

Disclosed is a process for the thermal cracking of heavy oils, which comprises a thermal cracking step of contacting a heavy oil with a fine powder of a porous material fluidized by a fluidizing gas to mainly obtain a light oil and a regenerating step of gasifying and removing coke adhering to the fine powder taken out from the thermal cracking step while fluidizing the fine powder by a molecular oxygen-containing gas and a steam-containing gas, the fine powder being circulated between the two steps, wherein fine spherical particles having a pore volume of 0.2 to 1.5 cm3/g, a specific surface area of 5 to 1500 m2/g, an average pore size of 10 to 10,000 Åand a weight average size of 0.025 to 0.25 mm, in which these properties are stably maintained at the temperature adopted for the thermal cracking, are used as the fine powder, and a hydrogen gas is made present at the thermal cracking step, the partial pressure of hydrogen is maintained at about 0.5 to about 5 Kg/cm2 and the total pressure at said step is maintained at about 1 to about 10 Kg/cm2-G.

대표청구항 ▼

A process for the thermal cracking of heavy oils having a Conradson carbon residue, CCR value greater than 3, which comprises: thermal cracking a heavy oil by contacting said heavy oil with a fluidized bed of fine, porous particles having a pore volume of 0.2 to 1.5 cm3 /g, a specific surface area o

A process for the thermal cracking of heavy oils having a Conradson carbon residue, CCR value greater than 3, which comprises: thermal cracking a heavy oil by contacting said heavy oil with a fluidized bed of fine, porous particles having a pore volume of 0.2 to 1.5 cm3 /g, a specific surface area of 5 to 1500 m2 /g, an average pore size of 10 to 10,000 Å, a weight average size of 0.025 to 0.25 mm at an elevated temperature sufficient to thermally crack said oil, and said particles having heavy metal deposited thereon, which is obtained from the heavy oil which inherently contains heavy metal, in an amount of at least 0.5% by weight, said bed being fluidized with a hydrogen containing gas at a velocity such that the partial pressure of hydrogen ranges from about 0.5 to about 5 kg/cm2 while the total pressure in said cracking step ranges from about 1 to about 10 kg/cm2 -G, thereby producing a light oil product having a boiling point which is lower than the heavy oil feed without substantial consumption of the hydrogen gas being used while reducing the amount of coke which forms during thermal cracking; and regenerating fine, porous particles withdrawn from said thermal cracking step which have coke adhered thereto by fluidizing said coked particles with a molecular oxygen-containing gas and a steam-containing gas and recirculating said regenerated particles to said thermal cracking step.