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Mathematical Modeling of Catalyst Deactivation of the Methanol to Gasoline (MTG) Process in a Fixed-bed Reactor

Hashemizadeh, Yahya | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49949 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kazemeini, Mohammad
  7. Abstract:
  8. Nowadays, with respect to environmental pollution and energy supply, producing gasoline from methanol or syngas is one of the most interesting research subjects. Gasoline production from methanol is a catalytic process that produces high-quality gasoline with minimum unwanted compounds. So this gasoline is a clean fuel and it can be replaced to petroleum gasoline. Because of that, it can be a valuable process in the petrochemical industry. One of the most important aspects of this process is catalyst deactivation with respect to time on stream. Catalyst deactivation is usually caused by poisoning, sintering, blocking pores, and coking. In this research, material and energy balance equations has been written for a fixed bed reactor. Then, they have been solved with proper initial and boundary conditions. In verification of modeling results, it was observed that olefins and gasoline relative errors are about 12% and absolute error of methanol was 0.1. To reduce these errors, it has been decided to import an extra reaction to reaction network. After optimization of this reaction constants to experimental data, it was observed that olefins and gasoline relative errors reduced to 6% and 3% respectively. Methanol absolute error reduced to under 0.008. It is noteworthy that we can say temperature relative error is under 4.5%. After this modification, we investigated process variables on catalyst activity, temperature, and product distribution. Now, we can say that this reactor has been fully investigated
  9. Keywords:
  10. Optimization ; Mathematical Modeling ; Catalyst Deactivation ; Fixed Bed Reactor ; Methanol Conversion to Gasoline (MTG)Process

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