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Static Melt Crystallizer Simulation and Design with CFD

Karimzadeh Sureshjani, Hamed | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56089 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Farhadi, Fathollah; Pishvaei, Mahmood Reza
  7. Abstract:
  8. Layer melt crystallization is one of the most attractive and productive separation methods in the chemical industry. One of the most important coal tar components, which is present in concentration between 10 to 12% is naphthalene. One of the most commonly used techniques for producing naphthalene crystallization. In this thesis, the layer melt crystallization in a mixture of naphthalene and benzothiophene has been investigated using computational fluid dynamics. The simulation of crystallization was performed in Comsol Multiphisics version 5.6 and the thickness of the crystal layer was obtained according to the time. At first, simulation results were verified with the labroratory results of the articles, and after confirming the solvent, the crystallization of the mixture of naphthalene and benzothiophene was investigated. The effect of various factors on the process was investigated. Supercooling conditions was applied in two forms, constant temperature and three temperatures of 67, 70, and 73 degrees Celsius, as well as constant cooling rates of 1.5, 3, and 5 degrees Celsius per hour. The results showed that the lower temperature and lower cooling rate led to a higher speed of movement of solid-liquid interface
  9. Keywords:
  10. Naphthalene ; Simulation ; Modeling ; Computational Fluid Dynamics (CFD) ; Crystallizers ; Cooling Rate ; Layer Melt Crystallization

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