Gas hydrogenation catalyst sulfurization and sulfurization waste gas treatment and emission process

The invention discloses a gas hydrogenation catalyst sulfurization and sulfurization waste gas treatment and emission process, wherein the problems of concentrated heat release and sulfur release during activation of the out-of-device pre-sulfurized catalyst and reduction of the catalyst before sulfurization are solved by adopting the catalyst and the out-of-device pre-sulfurized catalyst. The total interlayer number is an odd number of 5-15, wherein the uppermost layer and the lowermost layer are both catalysts, in the initial stage of sulfurization, the first layer of catalyst is supplied with sulfur and heat by a system, and the rest odd layers of catalysts are respectively supplied with sulfur and heat by an out-of-reactor pre-sulfurized catalyst on the upper layer; the sulfuration waste gas enters a heating furnace to be combusted, SO2 in the flue gas is removed to 30 mg/m3 or below through a dry flue gas desulfurization device, and the flue gas is discharged after being subjectedto white smoke removal t