Investigation the Nucleation Process in Rapid Expansion of Supercritical Solution (RESS) Process
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
View: 466
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
NCNNN02_023
تاریخ نمایه سازی: 2 تیر 1397
Abstract:
When a supercritical solution is rapidly expanded, large solute supersaturation can be attained, and small particles are formed. The evolution of the homogeneous nucleation rate, work of nucleus formation, and critical nucleus size along different expansion paths is investigated here for the model system benzoic acid-carbon dioxide. Nucleation rates are the result of the competition among solvent expansion, cooling due to depressurization, and high supersaturation. Although supersaturation can reach very high values (> 106), relatively flat nucleation rate profiles result due to cooling and expansion.
Keywords:
Authors
Hamidreza Bagheri
PhD candidate, Chemical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Hassan Hashemipour
Department of Chemical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran