Difunctional hydroxyl iron oxide desulphurization agent and preparation method thereof

The invention discloses a difunctional hydroxyl iron oxide desulphurization agent and a preparation method thereof. The method adopts ferrite and sodium metaaluminate as raw materials to have homogenous co-precipitation reaction, the one-step synthesis is performed in a co-precipitation method, impurities are removed in a separation manner, then by virtue of a series of steps such as half drying,addition of adhesive, mixing pre-extrusion, extrusion molding and drying, the difunctional hydroxyl iron oxide desulphurization agent is finally obtained. By adopting the desulphurization agent, the hydrogen sulfide and carbonyl sulfide can be removed, and the desulphurization agent is excellent in performance under the saturated sulfur capacity and regeneration test. The preparation method is simple in preparation process, stable in product, capable of simplifying the procedures, and capable of effectively reducing the equipment investment, so that the difunctional hydroxyl iron oxide desulphurization agent is good i