The utility model discloses a solid material drying device that chemical production used, including a jar body, turn -down rig, gas distribution device, drying device and drive arrangement, the hollow cylinder of both ends intercommunications is set to jar body, and a jar internal portion is provided with dry chamber, and the left end opening part of jar body is provided with the left end lid, and the right -hand member opening part of jar body is provided with the right -hand member lid, and turn -down rig all sets up at dry intracavity with the gas distribution device, states drive arrangement and installs and cover at the right -hand member, and drying device installs and covers at the left end, and dehumidifying device installs and covers at the right -hand member. The utility model discloses a material turning plate's rotation has realized circulating to the material in the jar body and has turnned, is favorable to material and hot -air fully to contact, improves dry material's even degree to be provided with rotatable gas distribution device, be favorable to hot -air and material fully to contact, improve the dry quality and even degree of material.