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Fabrication and Evaluation of Catalytic Microreactors to Verify the Conversion of Ethyl Mercaptan

Karami Basiri, Mohammad | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50436 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kazemeini, Mohammad
  7. Abstract:
  8. Sulfur compounds are largely an impurity in fossil fuels such as natural gas, crude oil and coal. In natural gas, the main sulfur compounds are hydrogen sulfide (H2S), carbonyl sulfide (COS),and C1-C3 mercaptans.Commercial methods for removing these compounds require the introduction of additional reactive substances (O2, H2, Olefins, NaOH, etc.), which often results in the production of other pollutants. Microfluid is a branch of science and technology that involves studying the behavior of fluid, the use of fluid and the manufacture of equipment or systems that are carried out in micro-channels.The dimensions of these canals are about ten to several hundred micrometers, and high of surface per volume ratio in this equipment makes it possible to ensure the uniformity of the whole of these equipment and, on the other hand, to transfer heat between the fluid and the equipment at high speed. The Metal foams are considered structured catalyst microreactor that leading to porosity. In this study, the conversion of ethyl mercaptan as one of the sulfur compounds in natural gas at 573K, 633K and 683K temperatures and atmospheric pressure in the presence of HZSM-5 Nano catalysts deposited on copper foam was investigated without the introduction of another reaction. After conducting test reactors, the major products were ethylene and H2S, but other side products, were formed such as alkanes and CS2. Finally utilizing using Nano HZSM-5 placed in microreactor lead to uniform mass and temperature distribution and in the optimum operating conditions, full conversion and 98.8% H2S selectivity obtained
  9. Keywords:
  10. Catalyst ; Metal Foam ; Microreactor ; Zeolite Catalyst HZSM-5 ; Ethyl Mercaptan

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