Reformulating fuel oil using re-refined used composite byproducts as a new cutter stock
AssigneeSaudi Arabian Oil Company
InventorsShahreyar Khan, Nasiru M. Tukur
Life of this patent
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Abstract
To reformulate a new fuel oil blend. Used lube oil feedstock, which is received from collection storage intermediary facilitiesis re-refined to form multiple re-refined byproducts including light solvent, used fuel oil, light extract, and heavy extract. A used oil composite byproduct is formed by blending a portion of the light solvent, a portion of the used fuel oil and a portion of the light extract. A portion of the used oil composite byproduct as viscosity cutter stock is blended with refined fuel oil to reformulate a final refined fuel oil blend. The refined fuel oil to which the portion of the used oil composite byproduct is added includes heavier hydrocarbons than the used oil composite byproduct.
Claims20
A method to reformulate a fuel oil blend, the method comprising:
- receiving used lube oil feedstock produced as a byproduct of refining crude oil;
- re-refining the used lube oil feedstock to form a plurality of re-refining byproducts comprising light solvent, used fuel oil and light extract;
- forming a used oil composite byproduct by blending a portion of the light solvent, a portion of the used fuel oil and a portion of the light extract;
- and
- blending a portion of the used oil composite byproduct with refined fuel oil to reformulate a final refined fuel oil blend, wherein the refined fuel oil to which the portion of the used oil composite byproduct is added comprises heavier hydrocarbons than the used oil composite byproduct.
A method to make a fuel oil blend, the method comprising:
- refining crude oil in a hydrocarbon refinery to produce fuel oil which is a byproduct of refining the crude oil;
- flowing a portion of the fuel oil to a fuel oil reservoir;
- re-refining the used lube oil feedstock to form a plurality of re-refined byproducts comprising light solvent, used fuel oil, light extract, and heavy extract;
- mixing the light solvent, the used fuel oil and the light extract to form a used oil composite byproduct;
- and
- flowing the used oil composite byproduct to the fuel oil reservoir to mix with the portion of the fuel oil to form a refined fuel oil blend.
A method to make a fuel oil blend, the method comprising:
- refining crude oil in a hydrocarbon refinery to produce fuel oil and used oil;
- re-refining the used oil to produce re-refined base oil, residual water, and a plurality of byproducts comprising light solvent, used fuel oil and light extract;
- combining the light solvent, the used fuel oil and the light extract to form a used oil composite byproduct;
- and
- combining the fuel oil and the used oil composite byproduct to form a refined fuel oil blend.
Dependencies are inferred from the claim text.