Sulfur foam overflow device of desulfurization regeneration tower

The utility model discloses a sulfur foam overflow device of a desulfurization regeneration tower. The sulfur foam overflow device comprises the desulfurization regeneration tower, a regenerator is arranged in the desulfurization regeneration tower; an annular sulfur foam overflow groove is formed in the edge of the upper end of the regenerator, and a regenerated liquid outflow pipe is arranged on one side of the regenerator in a communicating manner; the leading-out end of the regenerated liquid outflow pipe faces upwards, the leading-out end of the regenerated liquid outflow pipe is sleeved with a movable pipe, an overflow opening is formed in the upper end of the movable pipe, and the driving structure drives the movable pipe to slide up and down relative to the regenerated liquid outflow pipe; a PCL automatic control system is adopted, the liquid level of desulfurization regeneration liquid in the desulfurization regeneration tower is automatically adjusted through the U-shaped pipe principle according to