Patent ID: 8398847

Claim:
A computer implemented method for processing used oils for a usable hydrocarbon product comprising: a. providing a feedstock stream; b. filtering the feedstock stream; c. heating the feedstock stream; d. filtering the heated feedstock stream; e. monitoring a flow rate of the feedstock stream; f. injecting an aqueous sulfuric acid into the heated feedstock stream; g. injecting a concentrated sulfuric acid into the heated feedstock stream; h. blending the aqueous sulfuric acid, concentrated sulfuric acid, and the heated feedstock stream to form a mixed stream; i. separating the mixed stream into a first interface layer, an intermediate oil product, and a water layer; j. injecting an aromatic solvent release agent into the intermediate oil product, k. mixing the intermediate oil product and the aromatic solvent release agent to form a blended intermediate oil product; l. separating the blended intermediate oil product into a finished oil product, a second interface layer, and a second water layer; and m. pumping the finished oil product to a first settling tank and allowing any remaining particulate to fall out of solution to form a finished product.