ie6b00360_si_001.pdf (238.96 kB)
Synergistic Process for FCC Light Cycle Oil Efficient Conversion To Produce High-Octane Number Gasoline
journal contribution
posted on 2016-04-12, 00:00 authored by Nan Jin, Gang Wang, Libo Yao, Miao Hu, Jinsen GaoLight
cycle oil (LCO) from fluid catalytic cracking (FCC) was treated
by selective hydrogenation and then cracked in a FCC apparatus. Compared
with LCO, hydrogenated LCO (hydro-LCO) exhibited remarkable FCC performance,
recording with that 50.83 wt % hydro-LCO was converted into gasoline
fraction. This is attributed to the reduction of aromatics in hydro-LCO,
especially for the multiring aromatics. After hydrogenation, the amount
of multiring aromatics significantly decreased from 63.2 to 9.5 wt
%, while naphthenoaromatics (including indans, tetralin, and indenes)
increased from 8.8 to 34.2 wt %. In accordance with the experimental
results and theoretical analysis of LCO reaction characteristics,
a synergistic process for LCO efficient conversion to high octane
number gasoline was proposed, and simulation experiments were carried
out. The results show that, compared with routine FCC, 20 wt % higher
conversion and 16 wt % more gasoline could be obtained. Moreover,
gasoline from synergistic process exhibited decreased sulfur and olefins,
but increased aromatics, and thereby improved octane number. These
findings indicate that the proposed synergistic process could be an
effective option for producing gasoline with high octane number.