SDA semi-dry method deacidification tower for flue gas purification

According to the technical scheme, the SDA semi-dry method deacidification tower is characterized in that a spray head is arranged and used for solving the problem that part of reactants are hung on the wall and inconvenient to clean after the flue gas reacts with a deacidification agent, and fan blades are arranged and used for solving the problem that the static reaction of the flue gas and spray is insufficient; an external water source is introduced through the water pipe, the flow divider is matched with the flow dividing pipe to convey the water source to the spray head, the spray head sprays water out to wash the inner wall of the tower body, reactants are prevented from hanging on the wall, and the effect of cleaning the inner wall of the tower body is achieved; an external deacidification agent is introduced through the water pipe, the atomizer atomizes the deacidification agent in the flow divider, when the fan blades rotate, the fan blades drive air to flow, so that flue gas conveyed into the tower