TITLE:
Development and Performance Evaluation of Catalyst for Productive Ethylene Cracking Feedstock in Selective Hydrocracking of Straight Run Diesel Oil
AUTHORS:
Tiezhen Zhang, Xin Zhang, Yungang Jia, Haiyan Li, Fangming Xie, Zijin Yan, Hongyu Tian, Hongyu Zhang
KEYWORDS:
Straight Run Diesel, Mild Hydrocracking, Catalyst, Ethylene Cracking Feedstock, Process Research
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.13 No.3,
March
28,
2023
ABSTRACT: The upgrading of diesel oil to produce ethylene rich cracking feedstock
is an important and promising technical route to reduce the ratio of diesel to
gasoline. In the present work, a hydrocracking catalyst suitable for selective
hydrocracking of straight run diesel oil to produce high-quality ethylene
cracking feedstock at low cost was developed, by optimizing the composition of
catalyst support materials, using amorphous silicon aluminum and aluminum oxide
with high mesopore content as the main support, and modified Y zeolite with
excellent aromatic ring opening selectivity as the acidic component. The catalyst has in-depth characterized by X-ray
diffraction, transmission electron microscopy, scanning electron
microscopy, N2-low temperature adsorption-desorption, NH3-temperature-programmed desorption, and
IR techniques. And its catalytic cracking straight run diesel oil
performance was evaluated. The results show that the prepared catalyst has high
polycyclic aromatic hydrocarbon ring opening cracking selectivity. However,
alkanes retained in diesel distillates can achieve the goal of producing more
ethylene cracking feedstocks with low BMCI value under low and moderate
pressure conditions. This work may shed significant technical insight for oil
refining transformation.