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Improvement of fuel oil from fluidized catalytic cracking unit with ethanol by etherification reaction |
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| รหัสดีโอไอ | |
| Title | Improvement of fuel oil from fluidized catalytic cracking unit with ethanol by etherification reaction |
| Creator | Piyaporn Thipsunet |
| Contributor | Suttichai Assabumrungrat, Worapon Kiatkittipong |
| Publisher | Chulalongkorn University |
| Publication Year | 2549 |
| Keyword | Gasoline, Catalytic cracking, Etherification |
| Abstract | This thesis concerns the fuel oil quality improvement by the direct etherification of FCC gasoline with ethanol. The reactions were carried out at 343 K in a pressurized liquid phase reactor at 0.8 MPa and catalyzed by two commercial catalysts, i.e., Beta-zeolite and Amberlyst 16. Typically, the reactive olefins available in FCC gasoline are mainly in a range of C[subscript 5]-C C[subscript 7] compounds. The experimental results showed that the bRvp of etherified FCC gasoline was lower than that of gasohol whereas the octane number is slightly lower than that of gasohol, indicating that the gasoline form this process is more suitable than gasohol especially for the tropical zone or in summer. It was found that Beta-zeolite was a more suitable catalyst than Amberlyst 16 for the etherification of FCC gasoline with ethanol because it offered products with higher RON and ethanol conversion with lower bRvp because some isomerization also occurred without aromatization to benzene. Therefore, Beta-zeolite was further investigated to determine the effect of operating temperature by using the same reactor at three temperature levels of 333, 343 and 353 K. It was observed that the etherification conversions and ether yields decreased with the increasing temperature. In addition, azeotropic ethanol was used to study for the etherification and the hydration of FCC gasoline over Amberlyst 16.The presence of water in the ethanol azeotropic mixture caused a drop in the etherification conversion and ether yield. |
| URL Website | cuir.car.chula.ac.th |
