Synthesis method of complexing iron ion desulfurizer

The invention belongs to the technical field of hydrogen sulfide-containing gas purification, and particularly relates to a complex iron ion desulfurizer synthesis method, which comprises: mixing nitrilotriacetic acid and ethylenediaminetetraacetic acid according to a molar ratio of 1: 1-1: 2, mixing iron oxide and the mixture according to a molar ratio of 1: 1-1: 2, adding water as a solvent, heating the mixed solution to 95-100 DEG C, reacting for 1-2 hours, and cooling to room temperature to obtain the complex iron ion desulfurizer. The accelerant is gradually added into the mixed solution, meanwhile, the solution is stirred, the reaction is finished after solids in the solution are completely dissolved, and the method is used for synthesizing the desulfurizing agent. 本发明属于含硫化氢气体净化技术领域，具体涉及一种络合铁离子脱硫剂的合成方法，将次氮基三乙酸和乙二胺四乙酸按摩尔比1:1～1:2混合，再将氧化铁与上述混合物按摩尔比1:1～1:2混合，加入水作为溶剂，将混合液加热至95-100℃，逐步向混合液中添加促进剂，同时对溶液进行搅拌，待溶液中固体全部溶解后即反应结束，本发明用于合成脱硫剂。