Patent ID: 11857930
Assignee: JGC CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 8:
9. A crystallization apparatus comprising:
a treatment container where treatment for precipitating a crystal of a target substance is performed;
a straight pipe-shaped porous membrane (excluding a hollow fiber membrane) provided so as to internally partition the treatment container into a first flow space and a second flow space, multiple pores through which a liquid passes being formed in the straight pipe-shaped porous membrane;
a raw material liquid supply unit continuously supplying the first flow space with a raw material liquid containing the target substance or a raw material substance as a raw material of the target substance;
a treatment liquid supply unit continuously supplying a treatment liquid to the second flow space at a pressure at which the treatment liquid passes through the porous membrane and enters the first flow space, the treatment liquid being a poor solvent lowering solubility of the target substance with respect to a mixed liquid obtained by mixing with the raw material liquid or a reaction liquid generating a target substance lower in solubility with respect to the mixed liquid than the raw material substance by reacting with the raw material substance;
an extraction unit continuously extracting a mixed liquid of the raw material liquid and the treatment liquid from the first flow space; and
an aging unit precipitating and growing a crystal of the target substance from a mixed liquid extracted from the extraction unit.