METHOD OF PRODUCING LUBE BASE OIL AND LUBE BASE OIL PRODUCED THEREBY
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Mar 25, 2024
filing date -
Mar 25, 2024
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Abstract
A method of producing a lube base oil mixture includes providing a waste lubricant-derived refined oil fraction derived from a waste lubricant containing a lube base oil of API Group I or II. The waste lubricant-derived refined oil fraction contains an ionic refined oil, a first regenerated base oil, or a combination thereof, dewaxing the waste lubricant-derived refined oil fraction to produce a second regenerated base oil, and blending the second regenerated base oil with a separate lube base oil to produce a lube base oil mixture of Group III or higher. The method has an economical advantage because low-quality waste lubricant is used as a feedstock for the production of higher quality lube base oils. In addition, the method is advantageous in an environmentally friendly aspect because waste lubricant is reused rather than being disposed of.
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