This standard specifies the type, basic parameters, main dimensions, technical requirements, test and inspection methods, packaging, transportation and storage of glass-lined double cone rotary vacuum dryers from 200L to 5000L. This standard is applicable to glass-lined double cones that use hot water, steam or thermal oil as heat exchange medium, the design pressure in the tank is vacuum, the design pressure in the jacket is less than or equal to 0.6MPa, and the design temperature of the jacket is less than or equal to 200℃ Rotary vacuum dryer.