Environment-friendly biogas biological catalytic desulfurization tower

The utility model relates to the technical field of biogas desulfurization, in particular to an environment-friendly biogas biological catalytic desulfurization tower which comprises a tower body, the top end of the tower body is connected with a sealing plate through a screw, a gas inlet pipe is installed on the sealing plate, the bottom end of the gas inlet pipe is connected with a gas conveying pipe through a rotating joint, and a spraying assembly is arranged in the tower body and located on the outer side of the gas conveying pipe. The bottom end of the gas conveying pipe communicates with a gas distribution box, the side end of the gas distribution box communicates with a plurality of gas distribution pipes, and the top ends of the gas distribution pipes communicate with a plurality of gas spraying heads. A motor is installed at the bottom end of the tower body, the output end of the motor is connected with a rotating shaft, the bottom end of the rotating shaft is fixedly connected with the bottom end o