Continuous crystal transformation and ion exchange device and process

A continuous crystal transformation and ion exchange device, characterized by comprising:

• M+N reaction tanks which are in serial connection, wherein a feed opening of a latter reaction tank communicates with a discharge opening of a former reaction tank by means of a reaction solution circulation pipeline, and a discharge opening of an M+Nth reaction tank communicates with a feed opening of a first reaction tank by means of a reaction solution circulation pipeline;
• wherein no more than M reaction tanks are used for a crystal transformation process, and no more than N reaction tanks are used for an ion exchange process;
• all reaction tanks are each provided with four solution inlet pipelines, three solution outlet pipelines and one reaction solution circulation pipeline, wherein the four solution inlet pipelines are a deionized water inlet pipeline, a new alkali solution inlet pipeline, a new ion exchange solution inlet pipeline and a pH adjusting solution inlet pipeline, respectively, and the three solution outlet pipelines are a waste water outlet pipeline, a waste alkali solution outlet pipeline and a waste ion exchange solution outlet pipeline, respectively;
• and
• pipelines communicating with reaction tanks are controlled to be opened and closed by valves.