Device and method for preparing charcoal by pyrolyzing sludge based on microwave-induced directional heating technology

The invention relates to a device for preparing charcoal by pyrolyzing sludge based on a microwave-induced directional heating technology, and relates to the technical field of resource utilization ofmunicipal sludge. The device comprises a primary pyrolyzing furnace, a microwave pyrolyzing furnace, a material mixer, a rotary shaft of a material containing tray, a material inlet, a pyrolyzing charcoal discharge port, a guide plate, a rotary material containing tray, a bottom furnace body, an outer furnace body, a pyrolyzing charcoal cooling device, a pyrolyzing charcoal discharge port, an inner furnace body and a sealing layer, wherein the primary pyrolyzing furnace and the microwave pyrolyzing furnace form an annular furnace body structure; the material mixer, the rotary shaft of the material containing tray, the pyrolyzing charcoal discharge port, the guide plate, the rotary material containing tray, the inner furnace body and the sealing layer are arranged in the annular furnace body; the material inlet is