Refined oil and process for producing the same
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United States of America Patent
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Jun 10, 2008
Grant Date -
Feb 19, 2004
app pub date -
Oct 19, 2001
filing date -
Oct 24, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
According to the method of manufacturing refined oil of the present invention, refined oil which has a viscosity of 20 cst or lower at 135.degree. C., a pour point of 30.degree. C. or lower, an alkali metal content of 1 wt ppm or less, a vanadium content of 10 wt ppm or less and a sulfur content of 0.3 wt % or lower can be prepared, by bringing feed oil into contact with hydrogen in the presence of the demetalizing/desulfurizing catalyst 3 and the hydrogenolysis catalyst 5. This method can decrease the viscosity, pour point and sulfur concentration of the refined oil to sufficiently low levels, and decreases the production cost.
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