Master batch drying system

The master batch drying system comprises a tank body, a discharging hopper, a first drying device, a dust removal device and a second drying device, a discharging opening in the bottom of the discharging hopper is communicated with a feeding opening formed in the tank body, and the first drying device, the second drying device and the dust removal device are respectively communicated with the interior of the tank body. The first drying device is used for drying and dedusting master batches entering the tank body, the first drying device comprises a first drying disc, a second drying disc and a heat source device, the first drying disc and the second drying disc are each of a conical hollow interlayer structure, the first drying disc is arranged over the second drying disc, and the master batches can fall onto the second drying disc along the first drying disc; the second drying device comprises a first hot air ring, a second hot air ring and a hot air device; drying is conducted in a heat conduction mode and