(270c) Interface Nucleation in Segmented Continuous Crystallization Process
AIChE Annual Meeting
Tuesday, October 30, 2018 - 8:51am to 9:14am
The continuous crystallization behavior of segmented tubular crystallization process was investigated using glycine as a model compound. In our previous work, air-liquid slug flow crystallization was studied systematically through experiments coupled with a Realizable kâÎµ model in a computational fluid dynamics platform and obtained optimal results. In order to alleviate the phenomenon of wall crystallization occurred in the air-liquid segmented tubular crystallization system, liquid-liquid slug flow crystallization was investigated using dodecane as the oil phase. Process parameters such as surface active agent, ultrasonic were studied experimentally for their effect on the growth rate, size distribution, and morphology of the produced crystals as well. Static nucleation experiment under microscope of air-liquid interface and liquid-liquid interface was specially conducted and compared, and the results indicated that the oil restrained the nucleation compared to gas. The binding energy between glycine and different tubing materials were simulated using the material studio software and found that the binding energy between glycine and silicon tube was the strongest.