Abstract This paper proposes a model of the cracking process considering the catalyst deactivation by Ni, V and coke. The developed model is sensitive to the feedstock composition and describes the kinetics of cracking reactions leading to coke formation, the structural and selective properties of the catalyst. It also reflects the main technological parameters. The forecast calculations showed that when the resins and Ni contents in the feedstock increase by 4.2 wt% and 0.6 ppm, the coke contents on the catalyst increase by 0.75 and 0.32 wt% wt. under the other equal conditions. The catalyst activity decreases by 4.4% relative to initial value along with increasing the V content in the feedstock by 1.9 ppm due to its dealumination. If the Ni with V co-presence in the catalytic cracking feedstock and the Ni content increases by 0.6 ppm, the V destructive effect reduces by 1.2% due to reaction of Ni with the vanadic acid, also Ni on the catalyst increases the catalyst dehydrogenation activity. According to the calculations performed, the yield of the gasoline fraction changes by 4.43 wt%, depending on the feedstock composition (CSH/CAH = 1.6–1.8 units), other things being equal.

中文翻译：

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催化裂化建模：焦炭和重金属引起的催化剂失活

摘要 本文提出了一种考虑镍、钒和焦炭失活的裂化过程模型。开发的模型对原料组成很敏感，并描述了导致焦炭形成的裂化反应动力学、催化剂的结构和选择性。它还反映了主要的技术参数。预测计算表明，当原料中的树脂和镍含量增加 4.2 wt% 和 0.6 ppm 时，催化剂上的焦炭含量增加了 0.75 和 0.32 wt% wt。在其他同等条件下。由于脱铝，催化剂活性相对于初始值降低了 4.4%，同时原料中的 V 含量增加了 1.9 ppm。如果催化裂化原料中的 Ni 与 V 共存且 Ni 含量增加 0.6 ppm，由于Ni与钒酸反应，V破坏作用降低了1.2%，而且催化剂上的Ni提高了催化剂的脱氢活性。根据进行的计算，汽油馏分的产率变化 4.43 wt%，这取决于原料组成（CSH/CAH = 1.6-1.8 单位），其他条件相同。