The invention discloses a novel
ionic liquid extraction and electrocatalytic oxidation coupled desulfurization method, and the adopted
ionic liquid serves as a catalyst to accelerate an oxidation desulfurization reaction on one hand, and also serves as an extraction agent to promote rapid extraction of
sulfide on the other hand. According to the innovative method, the desulfurization speed and efficiency are greatly improved, and compared with a traditional oxidation desulfurization technology, the
reaction rate is obviously improved by about 20 times. Besides, simulated
seawater (hereinafter referred to as acidic brine) is adopted as an
electrolyte, so that the generation of an in-situ oxidant is realized, and ClO <-> with
catalytic oxidation performance is generated by effectively utilizing the Cl <-> oxidation reaction of the
anode. The innovation not only improves the efficiency of electrolyzing sea water to produce
hydrogen, but also avoids low efficiency and potential safety hazards caused by the introduction of a traditional oxidant. Considering that
seawater resources are rich and low in cost, the technology is suitable for being implemented around an
oil refinery, and an
oxidizing agent does not need to be additionally added, so that the cost of ultra-deep desulfurization is reduced, and the safety of the desulfurization process is enhanced.