High-pressure fuel gas complex iron desulfurization pure oxygen regeneration process

The invention relates to a high-pressure fuel gas complex iron desulfurization pure oxygen regeneration process, which mainly comprises a bubbling spray desulfurization tower, a desulfurization gas-liquid separator, a regeneration gas-liquid separator, a desulfurization tower liquid level regulating valve group, a high-pressure desulfurization circulating pump, a pure oxygen cyclic regeneration tower, a filter press, a sulfur filter press pump, a filtrate tank, a filtrate pump and a cyclic oxidation fan, fuel gas containing hydrogen sulfide enters the bubbling and spraying desulfurization tower through a high-pressure fuel gas inlet pipe, firstly makes contact with desulfurization alkali liquor stored at the bottom of the tower, then continues to move upwards to make reverse contact with desulfurization alkali liquor sprayed by a spraying liquid distributor of the desulfurization tower for desulfurization, and after desulfurization of a bubbling layer and a spraying layer, hydrogen sulfide is discharged out o