کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
172727 458558 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A systematic model-based analysis of a downer regenerator in fluid catalytic cracking processes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A systematic model-based analysis of a downer regenerator in fluid catalytic cracking processes
چکیده انگلیسی

Performance improvement of a catalyst regenerator for gasoline production in a fluid catalytic cracking (FCC) process is needed to achieve higher burning efficiency. This study performed a systematic model-based analysis of a downer-type regenerator to recover the activity of FCC catalyst by using a one-dimensional model of the regenerator coupled with its hydrodynamic characteristics and the kinetics of catalyst regeneration. The results of a sensitivity analysis showed that higher carbon content on spent catalyst causes a higher regeneration temperature. The ratio of the recycled-to-spent catalyst flow rate in range of 1.0–3.5 and temperatures of the spent catalyst in range of 703.15–803.15 K have insignificant effects on the overall performance of the regenerator. The suitable superficial gas velocity and the spent catalyst flow rate are in range of 4–7 m s−1 and 20–40 kg m−2 s−1, respectively.


► Performance of a novel downer regenerator to reactivate FCC catalyst was studied.
► Hydrodynamic of the regenerator and kinetics of catalyst regeneration was explained.
► Effects of key operating parameters on catalyst regeneration efficiency were reported.
► Temperature of the downer regenerator has a key effect on a regeneration process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Chemical Engineering - Volume 49, 11 February 2013, Pages 136–145
نویسندگان
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