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US 10,240,101 B2Granted
Process for combustion of heavy oil residue
AssigneeSaudi Arabian Oil Company
InventorsTidjani Niass, Mourad Victor Younes
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Abstract
The processes and systems herein described enable the use of CO2 to handle heavy oil fractions. A significant reduction in the requisite energy to maintain such a fuel in fluid form is attained. The energy reduction from herein described residue handling systems facilitate increased combustion plant efficiency and reduced CO2 emissions. The residue handling system is useful in refineries, power generation plants and other processes utilizing heavy oil residues as a feed.
Claims12
A method of improving efficiency of a combustion system utilizing a high viscosity heavy oil residue fuel, the method comprising:
- a. providing a source of CO2 or a CO2-rich gaseous mixture;
- b. bringing the CO2 or CO2-rich gaseous mixture into intimate contact with the heavy oil residue under predetermined conditions of temperature and a pressure below about 73 bar, to maintain CO2 below supercritical pressure conditions;
- c. maintaining the contact of the CO2 or CO2-rich mixture with the heavy oil residue below about 73 bar until a predetermined concentration of dissolved CO2 is attained and the viscosity of the heavy oil residue is reduced;
- d. pumping and atomizing the reduced-viscosity heavy oil residue for combustion in a combustion chamber.
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Dependencies are inferred from the claim text.