To provide an oxidation method, an oxidation catalyst, an oxidation desulfurization method and an oxidation desulfurization apparatus suitable for oxidation desulfurization of liquid containing an organic sulfur compound.
In the desulfurization method, an oxidant is added into liquid containing the organic sulfur compound, the liquid is heated in the presence of an oxidation catalyst, thereby, the organic sulfur compound is converted into a sulfur oxide and, subsequently, the produced sulfur compound is selectively adsorbed and removed. As the oxidant, at least one kind of oxidant selected from among peroxide water, organic peroxide, organic hypochlorite compound and organic hypobromite compound is added to the liquid by stoichiometric quantity or more necessary for oxidation of sulfur atom in the organic sulfur compound, the oxidation reaction is performed by using the oxidation catalyst and, further, the oxidized sulfur compound is removed by adsorption etc. Furthermore, by using the oxidation desulfurization apparatus provided with a first step reactor filled with the oxidation catalyst and a second step reactor filled with the adsorbent, a petroleum product whose sulfur content is in the order of several hundreds ppb can be supplied.
ISHIHARA ATSUSHI
SEN EIKA
ISHIHARA ATSUSHI
SEN EIKA
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