Continuous cooling crystallizer

The invention discloses a continuous cooling crystallizer, comprising a crystallization tank and a heat exchanger in the crystallization tank, wherein, the heat exchanger comprises a top-enclosed heat exchange cylinder, a heat exchange pipe fixed in the heat exchange cylinder, a cooling medium inlet pipe and a cooling medium outlet pipe; a hollow shaft vertically passing through the top surface of the crystallization tank and a driving mechanism driving the hollow shaft to rotate are arranged above the crystallization tank, the top end of the hollow shaft is connected with a three-channel rotary joint, the bottom end of the hollow shaft is connected with the enclosed end of the heat exchange cylinder; a material pipe which has a top end communicated with one channel of the three-channel rotary joint and a bottom end passing through the heat exchange cylinder is arranged in the hollow shaft, one ends of the cooling medium inlet pipe and the cooling medium outlet pipe are respectively communicated with the inlet end and outlet end of the heat exchange pipe, and the other ends of the cooling medium inlet pipe and the cooling medium outlet pipe are respectively communicated with the rest two channels of the three-channel rotary joint. The continuous cooling crystallizer is used in a cooled shell-and-tube heat exchanger and arranged in the crystallization tank, rotates at a certain speed when working, and the cooling process and stirring process are combined as a whole, thus the crystallization efficiency is greatly increased.