Dynamic crystallizer and processing technology for producing high-purity refined naphthalene

The invention relates to a dynamic crystallizer which is characterized in that a skirt barrel is mounted below a collecting tank barrel, a crystallizer barrel is mounted above the collecting tank barrel, an end socket arranged at the lower part of the collecting tank barrel is arranged at the upper part in the skirt barrel, and a feeding hole is formed in the top of the crystallizer barrel; an upper tube plate and a lower tube plate are arranged in the crystallizer barrel up and down, two layers of medium liquid distributors are arranged between the two tube plates, 810 falling film thin-wall tubes are uniformly distributed between the two tube plates, each falling film tube penetrates through the two layers of medium liquid distributors, a heating coil a is arranged below the lower tube plate, a sealing head is arranged at the bottom end of the collecting tank barrel, and a heating coil a is arranged at the bottom end of the collecting tank barrel. A heating coil b is arranged outside the end socket, and a p