Mineral oils: processes and products – Refining – Metal contaminant removal
Patent
1985-07-15
1986-10-21
Metz, Andrew H.
Mineral oils: processes and products
Refining
Metal contaminant removal
208309, C10G 1700, C10C 300
Patent
active
046184139
ABSTRACT:
This invention is a process for removing nickel and vanadium metalloporphyrinic compounds from oils which contain them. The process involves the extraction of those compounds using certain solvents which are not miscible with the oils involved and which are defined using variables known as three-dimensional solubility parameters. The most preferred solvents which meet the disclosed criteria are ethylene carbonate, propylene carbonate, ethylene trithiocarbonate and dimethylsulfone. The solvents are particularly useful in removing the nickel and vanadium compounds from heavier oils such as crude oils and the so-called gas oils obtained during the early stages of the refining process.
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Exxon Research and Engineering Company
Metz Andrew H.
Myers Helane
Wheelock E. Thomas
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