Mobile straw carbonization and field returning equipment and method

The invention relates to the technical field of carbonization furnaces, in particular to movable straw carbonization returning equipment and method, the equipment is mounted on a frame and comprises two independent spaces, namely a carbonization chamber and a hearth, a feeding screw is arranged at the top of the carbonization chamber, a discharging hopper is further mounted at the lower part of the carbonization chamber, and the bottom of the discharging hopper is connected with an inlet of a grading screening device. The hearth is provided with a material pushing device and further provided with a fan system used for feeding pyrolysis gas and air of the carbonization chamber into the hearth, and a waste gas pipeline of the hearth is sequentially connected with the smoke side of the steam generator, the washing spraying tower, the activated carbon box and the dividing wall smoke chamber. In order to realize rapid treatment of straws in multiple scenes, through detailed design, the whole system does not need t