| 초록 |
Crystallization separation techniques such as melt crystallization have received a great deal of attention in the industrial field due to their ability to produce ultra-pure chemicals and their potential of low-carbon emission effect by increasing the process energy efficiency. This study will present results of purification of organic chemicals by using an accurate thermodynamic framework-based melt crystallization process. The measurement of solid-liquid phase equilibrium which indicates the thermodynamic feasibility of the purification process, is developed by synthetic methods and analytical methods and is calculated by activity coefficient model NRTL (Non-random two-liquid model). The crystallization process was carried out in solid layer growth melt crystallization in lab scale and provides crystallization rate, yield, feed impurity concentration and final product purity. Development of AspenPlus package that simulates this crystallization process and this crystallization simulation results can be extended to evaluate actual plant samples to evaluate the feasibility to scale-up this technology. |
