Heavy Oil Upgrading


The upgrading of heavy oils means the conversion processes primary producing products that have lower boiling point than the feedstock oils. The need for upgrading technology for processing heavy oils and residue is now increasing.

Heavy oil upgrading process technology

The technology for upgrading heavy oils which converts atmospheric and vacuum residues, and other heavy oils into more valuable products, features many processes with different characteristics such as thermal cracking, FCC, hydrocracking, gasification and so on, enabling the effective utilization of crude oils. TOYO has designed and constructed over 20 facilities for upgrading heavy oil resources both within Japan and abroad, for various licensed processes of UOP, AXENS, KBR, Lummus, Shell, Exxon Mobil, Foster Wheeler, Petrobras and many others.

Example of the process flow for upgrading heavy oil

Example of the process flow for upgrading heavy oil

Features and benefits of visbreaking process technology


Visbreaking is a thermal cracking process that intends to reduce the viscosity and pour point of residual oil without using catalyst, from which high-quality fuel oil and a small amount of naphtha and distillate are obtained.
This process has an important role in reducing the amount of cutter stocks although its cracking severity is mild and it’s producing a relatively small amount of lighter distillate.
TOYO has designed and constructed more than 5 units of visbreaking plants.

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