Simulation and Empirical Studies of Solvent Evaporation Rates in Vacuum Evaporation Crystallization

Abstract

Simulation results for continuous vacuum evaporation crystallization obtained by Aspen Plus and experimental results for semi-batch vacuum evaporation crystallization are presented. In the crystallization experiments, the fixed heat duty was used to compare the water evaporation rates and crystal properties obtained at different pressures. The solution selected was aqueous glycine. It has the ability to form a number of different crystalline polymorphs, which allows it to exhibit a variety of different physical properties while maintaining its chemical properties. X-ray diffraction results demonstrated that mainly the g-crystal form is produced under the conditions applied in vacuum evaporation crystallization.

Optimizing solvent dipole moment enables PVDF to improve piezoelectric performance

“…After revising the suitable proportion between the high polar DMF and the low dipole acetone. To control the process of assembling molecular chains during forming a fixed crystal phase structure, the continuous vacuum crystallization method is used to weaken the rapid dispersion of the solvent due to heating [32]. Eventually, the DMF molecule forms the strongest solvent dipole moment with the acetone molecule at the ratio (A 4 D 6 ), generating strong interactions with the PVDF molecular chains, and then causing the phase inversion during solvent evaporation, driving more dipoles to align according to the β-phase.…”

Hydrophobic Modified Ceramic Aeration Membrane for Effective Treatment of Brine Wastewater

“…Currently, two main technologies for MLD have been developed. One is membrane-based technologies, which can be represented by reverse osmosis [11,12], and the other is thermal-based technologies, represented by multi-effect distillation and evaporative crystallization [13,14]. Membrane-based technologies provide the advantages of low energy consumption and high efficiency.…”

Thermal Performance Analysis of Ionic Liquid‐Pretreated Spent Coffee Ground Using Aspen Plus®

“…Gasification behavior can be effectively analyzed through syngas composition. Before designing pilot‐scale processes, it is highly recommended to test the efficiency of the fuel by using softwares including different simulators that can make accurate predictions 15. Aspen Plus® is a powerful simulation software used to predict process performance with high accuracy 16, 17.…”