| 摘要 |
PURPOSE:The titled apparatus capable of continuously precipitating a crystal from a solution in good efficiency without adhering the same to a pipe inner wall or a stirring blade, constituted so as to rotate the spring-formed stirring blade, which has a rotary outer diameter near to the inner diameter to a cooling pipe, in the said cooling pipe. CONSTITUTION:In a continuous crystal precipitation apparatus wherein a spring- formed stirring blade 2 is mounted to a cooling pipe 1 having a cooling jacket, the above mentioned stirring blade 2 is rotated by the motor 3 connected thereto and a super-saturated solution is supplied into the cooling pipe 1 from an inlet while a cooling medium is passed through the jacket from an inlet 6 to a discharge port 7. By this method, the above mentioned solution is cooled to precipitate a crystal and the formed slurry can be continuously taken out from a discharge port 5. In addition, the precipitated crystal is prevented from precipitation and adhering to the pipe wall and grown thereon by rotating the stirring blade 2. Furthermore, by assembling the above mentioned cooling pipe 1 in a continuous multi-stage fashion, the capacity thereof can be simply increased.
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