Publication Date:
2012-03-14
Description:
The effect of temperature has been studied in hydrocracking of light cycle oil (LCO), byproduct of fluidized catalytic cracking (FCC) units on a bifunctional catalyst (Pt-Pd/HY zeolite). The increase in both temperature and H 2 partial pressure have an important attenuating effect on catalyst deactivation, given that they decrease sulfur equilibrium adsorption and enhance hydrocracking of coke precursors. Therefore, the catalyst maintains significant hydrodesulfurization and hydrocracking activity. As the temperature is increased, hydrocracking conversion and naphtha selectivity increase, although there is no significant dearomatization of the medium distillate fraction in the range of the studied experimental conditions. 400 °C is the more suitable temperature for obtaining a high yield of naphtha with a high content of i -paraffins. Valorization of light cycle oil into valuable blending streams (naphtha and medium distillates) can be reached by means of hydrocracking over a Pt-Pd catalyst, supported on a very acid HY zeolite. The effect of temperature as a key factor on conversion, yield, and selectivity of product fractions of interest is determined and evaluated.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
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Process Engineering, Biotechnology, Nutrition Technology
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