Method for ion liquid abstraction-catalytic oxidation desulfurization
A catalytic oxidative desulfurization and ionic liquid technology, applied in the refining of oxygenated compounds, petroleum industry, refining hydrocarbon oil, etc., can solve the problem of low sulfur removal rate, and achieve high removal efficiency, mild reaction conditions, and simple separation. Effect
Inactive Publication Date: 2008-07-16
CRPC INNOVATION ENERGY
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The invention relates to a method which uses ionic liquids extraction coupling tungsten, molybdenum and other polyoxometallate to catalyst oxidation so as to reduce the content of sulfur in the oil. The invention dissolves the catalyst into the ionic liquid and the volume ratio of the ionic liquid and the oil is 1:3 to 1:5, and the quantity range of the catalyst and the sulfur compounds is 1:100 to 4:100. The concentration of the aqueous hydrogen peroxide is 5 percent to 40 percent, and the content range with the sulfur compounds in the oil is 1:2 to 1:10. When the temperature is between 30 and 70 DEG C and the reaction time is 0.5 to 3 hours, coupling catalyst oxidation is extracted to reduce the content of sulfur in the oil to be less than 10 ppm. Compared with the traditional method, the method has the advantages that the sulfur has high removal efficient, and the reaction system is very simple, and the reaction condition is very soft and no pressure equipment is needed; the separation is very convenient and the ionic liquid can be recycled.
Application Domain
Refining with oxygen compounds
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