Heavy oil refining method
OwnerMakoto Inomata, Tsuyoshi Okada +4inventors
InventorsMakoto Inomata, Tsuyoshi Okada, Akira Higashi, Hajime Sasaki, Susumu Kasahara, Yasushi Fujimura
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Abstract
A refined oil is obtained by using a heavy oil having a hydrogen content of 12 wt % or less as a feed oil, and after carrying out a solvent extraction process such that the hydrogen content increases by 0.2 wt % over that of the feed oil, hydrorefining process is carried out such that the hydrogen content increases by 0.5 wt % over the extracted oil. Thereby, an inexpensive heavy oil can be used as a feedstock, and using a simple and reliable method, refined oil can be produced.
Claims8
A refining method for heavy oil comprising the steps of:
- using a heavy oil having a hydrogen content of 12% or less as a feed oil, carrying out a solvent extraction process so that the hydrogen content increases by 0.2 wt % or greater with respect to said heavy oil, and obtaining a deasphalted oil (DAO) as an extracted oil;
- and
- subjecting said deasphalted oil to hydrorefining so that the hydrogen content increases by 0.5 wt % or greater with respect to said deasphalted oil to obtain a refined oil.
Dependencies are inferred from the claim text.