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.
| Original language | English |
|---|---|
| Article number | 106318 |
| Journal | Fuel Processing Technology |
| Volume | 200 |
| DOIs | |
| Publication status | Published - Apr 2020 |
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Keywords
- Catalytic cracking
- Coke
- Deactivation
- Heavy metals
- Mathematical modeling
ASJC Scopus subject areas
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
Cite this
Modeling of the catalytic cracking : Catalyst deactivation by coke and heavy metals. / Nazarova, Galina; Ivashkina, Elena; Ivanchina, Emiliya; Oreshina, Alexandra; Dolganova, Irena; Pasyukova, Mariya.
In: Fuel Processing Technology, Vol. 200, 106318, 04.2020.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling of the catalytic cracking
T2 - Catalyst deactivation by coke and heavy metals
AU - Nazarova, Galina
AU - Ivashkina, Elena
AU - Ivanchina, Emiliya
AU - Oreshina, Alexandra
AU - Dolganova, Irena
AU - Pasyukova, Mariya
PY - 2020/4
Y1 - 2020/4
N2 - 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.
AB - 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.
KW - Catalytic cracking
KW - Coke
KW - Deactivation
KW - Heavy metals
KW - Mathematical modeling
UR - http://www.scopus.com/inward/record.url?scp=85077012452&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85077012452&partnerID=8YFLogxK
U2 - 10.1016/j.fuproc.2019.106318
DO - 10.1016/j.fuproc.2019.106318
M3 - Article
AN - SCOPUS:85077012452
VL - 200
JO - Fuel Processing Technology
JF - Fuel Processing Technology
SN - 0378-3820
M1 - 106318
ER -