Anti-blocking device suitable for complex iron catalysis coke oven gas desulfurization process

The utility model provides an anti-blocking device suitable for a coke oven gas desulfurization process by a complex iron catalysis method. Comprising a desulfurization tower (1), a regeneration tower (4) arranged on one side of the desulfurization tower (1), a reaction tank (2) arranged on the other side of the desulfurization tower (1) and connected with a pipeline of the desulfurization tower (1), a foam tank (5) connected with a foam overflow pipe (42) of the regeneration tower (4), and a filter press (7) connected with the foam tank (5) through a foam pump (6), the desulfurization tower (1) is lower than the regeneration tower (4); an overflow pipe (41) of the regeneration tower (4) is connected with the top of the desulfurization tower (1); and the reaction tank (2) is in pipeline connection with the regeneration tower (4) through the desulfurization circulating pump (3). The continuous full desulfurization can be realized without stopping the tower for maintenance, and the influence on the production a