Kinetic study of catalytic cracking of heavy oil over an in-situ crystallized FCC catalyst
Kinetic study of catalytic cracking of heavy oil over an in-situ crystallized FCC catalyst
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DOI：
10.1016/j.fuel.2014.10.072
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发表时间：
2015-02
期刊：
影响因子：
7.4
通讯作者：
K. Xiong;Chunxi Lu;Zhifeng Wang;Xiong-hou Gao
中科院分区：
文献类型：
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作者：
K. Xiong;Chunxi Lu;Zhifeng Wang;Xiong-hou Gao
首次报道了原位晶化催化裂化催化剂的动力学特性。建立了包含24个动力学参数的六集总动力学模型，其中一个参数用于碱性氮中毒，另一个参数用于芳烃吸附，另外两个参数用于催化剂失活。根据460、480、500和520°С的实验数据，用四阶龙格-库塔法和最小二乘法估计了动力学参数。根据Arrhenius方程计算了频率因子和表观活化能。产物分布的预测值与实验值吻合较好，相对误差主要在10%以内。模型分析表明，相对较低的温度更适合生产轻质油。
The kinetic characteristics of an in-situ crystallized FCC catalyst were reported for the first time. A six-lump kinetic model containing 24 kinetic parameters, one parameter for basic nitrogen poisoning, another parameter for aromatics adsorption and other two parameters for catalyst deactivation was established. Kinetic parameters were estimated based on experimental data at 460, 480, 500 and 520 °С by fourth order Runge–Kutta algorithm and the least square method. Frequency factors and apparent activation energies were then calculated according to Arrhenius equation. The predicted data of product distribution showed good agreement with experimental data, and the relative errors were mainly within 10%. Model analysis indicated that a relative low temperature was more suitable for the production of light oil.