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Theoretical and Experimental Study of Essential oil Extraction from Damask Rose Flower

Darvishi Noshabadi, Mohammad Amin | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54684 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Gothbi, Cyrus; Karimi Sabet, Javad
  7. Abstract:
  8. The use of medicinal plants to improve living standards has coincided with the history of human life. Throughout history, man has had no choice but to resort to plants. Among all the plants, Iranians have had a deep connection with Mohammadi flowers and throughout history have tried to extract the plant in various ways. Therefore, in this article, we have examined the method of supercritical extraction. In order to create a criterion for comparing the maximum extraction rate with the Soxhlet method and with the help of normal hexane solvent, the extraction operation was performed and its efficiency was estimated to be equal to 1.02%. Then, with supercritical experiments, it was found that increasing the pressure and retention time increases the extraction rate and increasing the temperature has an inverse effect on the extraction rate. Recovery was based on dried plant with 54.9% of 2-phenylethanol. On the other hand, these parameters were also investigated for the extraction of 2-phenyl ethanol, and consequently temperature has a key effect on the extraction of this substance and increasing the temperature increases the extraction of this substance, so the maximum extraction is in the temperature of 50 degrees is equal to 58.8%. In the simulation chapter, according to the equilibrium data obtained at a residence time of 270 minutes, the extraction modeling was performed using the peng-Robinson equation of state and the binary interaction coefficients were optimized using the genetic algorithm. These coefficients were obtained with values of kij=0.311 and lij=0.037 Then, the process was simulated and the extraction unit of the solvent was investigated according to the ping-Robinson information obtained in the previous step. The most suitable temperature and pressure range for proper separation, reduce the recovery cost and reduce the amount of compensatory dioxide to the cycle (make-up) temperature range was 40-55 bar and 15-25 C At the end, simulation was performed by Hayes software and units were designed with the help of Wallace handbook. For example, extraction tanks with a volume of 200 liters with a length to diameter ratio of 3 and a thickness of 0.915 were considered to withstand a pressure of 125 bar. And an estimate of the cost of each equipment was made. In the appendix, the economic review of this project was performed, which showed that the project ROI is equal to 154% and the project PBP is equal to 0.62
  9. Keywords:
  10. Economic Analysis ; Supercritical Extraction ; Essential Oil ; Damask Rose ; Supercritical Carbon Dioxide ; Peng Robinson Equation of State ; Solubility Modelling

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