High-efficiency moving bed calcium-based desulfurization device

The utility model provides a high-efficiency moving bed calcium-based desulfurization device, which relates to the field of smoke desulfurization equipment and comprises a desulfurization box, two air inlet pipes and a negative pressure air pipe are symmetrically arranged on one side of the desulfurization box, the negative pressure air pipe is connected with an air outlet pipe through a negative pressure fan, and the air outlet pipe and the air inlet pipes are located at the same height. Two groups of desulfurization assemblies are symmetrically arranged in the desulfurization box, each desulfurization assembly comprises a first-stage desulfurization tower, a second-stage desulfurization tower and a third-stage desulfurization tower which are arranged at equal intervals, the upper parts and the lower parts of the first-stage desulfurization tower, the second-stage desulfurization tower and the third-stage desulfurization tower are respectively connected with a feeding hopper and a discharging hopper which ar