Quantitative correlations of cracking performance with physiochemical properties of FCC catalysts by a novel lump kinetic modelling method

Xiong, Kai; Lu, Chunxi; Wang, Zhifeng; Gao, Xionghou

doi:10.1016/j.fuel.2015.07.081

Cited by 26 publications

(17 citation statements)

References 12 publications

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“…The activation energies that were retrieved via the fixed bed reactor modeling were also kept constant in the riser model at their previous values. After a thorough literature survey, it was found that the employed values for the activation energies lie within the range of the literature reported values [9,13,14,[20][21][22].…”

Section: Determination Of Kinetic and Thermodynamic Parametersmentioning

confidence: 66%

Model based analysis of the effect of 2-ethylphenol addition to n-decane in fluid catalytic cracking over a series of zeolites

Alexiadis

Heuchel

Traa

et al. 2019

Chemical Engineering Journal

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Section: Determination Of Kinetic and Thermodynamic Parametersmentioning

confidence: 66%

Model based analysis of the effect of 2-ethylphenol addition to n-decane in fluid catalytic cracking over a series of zeolites

Alexiadis

Heuchel

Traa

et al. 2019

Chemical Engineering Journal

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“…1.15 S c (average sphericity of catalyst particles) 0.72 E c catalyst activation energy (kJ/kg mol) 49,000 Ancheyta and Rogelio [15] ρ c (density of catalyst, kg/m 3 Table 8 summarizes the variables, feed and catalyst characteristic and other parameters used in this simulation. Most of the parameters were obtained from the industry and literature [19,20,58] (Table 9).…”

Section: Variable Valuementioning

confidence: 99%

“…It is a key technology that converts heavy distillates, such as bottoms of vacuum and atmospheric distillation units, into desirable products such as gasoline, diesel and middle distillates, using zeolite-cracking catalyst [2]. These cracking reactions take place in the riser column [3]. The FCC is a type of secondary unit operation and one of the most important processes in a petroleum refinery.…”

Section: Introductionmentioning

confidence: 99%

Maximization of propylene in an industrial FCC unit

2018

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The FCC riser cracks gas oil into useful fuels such as gasoline, diesel and some lighter products such as ethylene and propylene, which are major building blocks for the polyethylene and polypropylene production. The production objective of the riser is usually the maximization of gasoline and diesel, but it can also be to maximize propylene. The optimization and parameter estimation of a six-lumped catalytic cracking reaction of gas oil in FCC is carried out to maximize the yield of propylene using an optimisation framework developed in gPROMS software 5.0 by optimizing mass flow rates and temperatures of catalyst and gas oil. The optimal values of 290.8 kg/s mass flow rate of catalyst and 53.4 kg/s mass flow rate of gas oil were obtained as propylene yield is maximized to give 8.95 wt%. When compared with the base case simulation value of 4.59 wt% propylene yield, the maximized propylene yield is increased by 95%.

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“…The FCC process is one of the most important feedstock conversion units in the oil refinery industry. FCC is a major contributor to the production of gasoline [1][2][3][4][5]. Catalytic cracking endothermic reactions are accompanied with coke formation.…”

Section: Introductionmentioning

confidence: 99%

Catalyst/Feedstock Ratio Effect on FCC Using Different Catalysts Samples

Alkhlel

Lasa

2019

Catalysts

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The present study is a follow-up to a recent authors contribution which describes the effect of the C/O (catalyst/oil) ratio on catalytic cracking activity and catalyst deactivation. This study, while valuable, was limited to one fluidized catalytic cracking (FCC) catalyst. The aim of the present study is to consider the C/O effect using three FCC catalysts with different activities and acidities. Catalysts were characterized in terms of crystallinity, total acidity, specific surface Area (SSA), temperature programmed ammonia desorption (NH3-TPD), and pyridine chemisorption. 1,3,5-TIPB (1,3,5-tri-isopropyl benzene) catalytic cracking runs were carried out in a bench-scale mini-fluidized batch unit CREC (chemical reactor engineering centre) riser simulator. All data were taken at 550 °C with a contact time of 7 s. Every experiment involved 0.2 g of 1,3,5-TIPB with the amount of catalyst changing in the 0.12–1 g range. The resulting 0.6–5 g oil/g cat ratios showed a consistent 1,3,5-TIPB conversion increasing first, then stabilizing, and finally decreasing modestly. On the other hand, coke formation and undesirable benzene selectivity always rose. Thus, the reported results show that catalyst density affects both catalyst coking and deactivation, displaying an optimum C/O ratio, achieving maximum hydrocarbon conversions in FCC units.

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Quantitative correlations of cracking performance with physiochemical properties of FCC catalysts by a novel lump kinetic modelling method

Cited by 26 publications

References 12 publications

Model based analysis of the effect of 2-ethylphenol addition to n-decane in fluid catalytic cracking over a series of zeolites

Model based analysis of the effect of 2-ethylphenol addition to n-decane in fluid catalytic cracking over a series of zeolites

Maximization of propylene in an industrial FCC unit

Catalyst/Feedstock Ratio Effect on FCC Using Different Catalysts Samples

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