초록 ▼

A process is provided for preparing pipelineable syncrude and asphalt from a heavy crude oil. The syncrude has substantially less metals content and Conradson Carbon Residue than the precursor crude oil, and may be used as feed for catalytic cracking or as fuel oil. The asphalt is adaptable for pavi

A process is provided for preparing pipelineable syncrude and asphalt from a heavy crude oil. The syncrude has substantially less metals content and Conradson Carbon Residue than the precursor crude oil, and may be used as feed for catalytic cracking or as fuel oil. The asphalt is adaptable for paving. The process consists of air-blowing the crude, deasphalting the air-blown product, and thermally cracking the deasphalted oil to reduce its viscosity, in that order. The process is adaptable to on-site use in or near a heavy oil field, using skid-mounted equipment.

대표청구항 ▼

A process for converting a metals-contaminated heavy crude oil characterized by an API gravity less than about 20°and a substantial Conradson Carbon Residue to a pipelineable and substantially upgraded syncrude with concomitant recovery of blown asphalt, said process comprising: (a) air-blowing at l

A process for converting a metals-contaminated heavy crude oil characterized by an API gravity less than about 20°and a substantial Conradson Carbon Residue to a pipelineable and substantially upgraded syncrude with concomitant recovery of blown asphalt, said process comprising: (a) air-blowing at least the 650°F.+fraction of the heavy crude oil at a temperature of 390°to 660°F. under conditions effective to increase its combined oxygen content by at least 0.5 weight percent; (b) deasphalting said air-blown crude oil with solvent whereby separately recovering a blown asphalt and an intermediate syncrude having a substantially lower concentration of metals and less Conradson Carbon residue than said heavy crude oil; and, (c) visbreaking said intermediate syncrude at 800°to 950°F. and at a severity effective to impart to it pipelineable viscosity characteristics.