Automatic efficient boiler desulfurization system

The utility model discloses an automatic efficient boiler desulfurization system, including stock bin unit, gas source unit, feeding unit and hearth unit, the bottom end of stock bin unit is connected with feeding unit through pipeline, one end of feeding unit is connected with gas source unit, the other end of feeding unit is connected with hearth unit. Limestone powder is stored through the stock bin unit, the limestone powder is discharged through the limestone powder side discharge port, a desulfurizing agent is added to the limestone powder through the feeding unit, the gas source unit serves as a power desulfurizing agent to be sprayed to the feeding unit, and the feeding unit mixes the limestone powder and the desulfurizing agent and jointly sprays the limestone powder and the desulfurizing agent into the hearth unit for desulfurization. Decomposition and desulfurization reactions are carried out in the hearth unit, a desulfurizer is decomposed at high temperature and then reacts with SO2 in flue gas,