Simulation of Catalytic Cracking in a Fixed-Fluidized-Bed Unit

Vieira, R.C.; Pinto, José Carlos; Biscaia, Evaristo C.; Baptista, Claudia M. L. A.; Cerqueira, Henrique S.

doi:10.1021/ie049781t

Cited by 30 publications

(22 citation statements)

References 25 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Supporting Information for this article can be found under DOI: 10.1002/ceat.202000577. This section includes additional references to primary literature relevant for this research [50][51][52][53][54][55][56].…”

Section: Supporting Informationmentioning

confidence: 99%

Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils

et al. 2021

View full text Add to dashboard Cite

Ten gas oils and one deasphalted hydrocracked vacuum residue obtained from ebullated‐bed vacuum residue hydrocracking have been cracked in a laboratory advanced catalyst evaluation unit on a commercial fluid catalytic cracking (FCC) catalyst. It was found that the eleven secondary heavy oils obey second‐order reaction kinetics. The relations between gas oil properties and FCC conversion, product yields, and quality were evaluated by means of intercriteria analysis. It could be stated that the FCC conversion strongly correlates with the gas oil Kw characterization factor. The product yields were established to depend on the secondary gas oil carbon atoms number, aromatic ring index, paraffinic and aromatic carbon content, and the total aromatics content.

show abstract

Section: Supporting Informationmentioning

confidence: 99%

Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The gas oils treated using the silica and clay adsorption processes were passed through a previously used fluidized bed reactor (ACE unit) to simulate the performance of a FCC unit.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the use of adsorbent materials in the removal of nitrogen compounds from gas oil as a pre‐treatment for feeds for fluid catalytic cracking units

et al. 2016

View full text Add to dashboard Cite

This study was designed to investigate the use of commercial adsorbent materials for the removal of nitrogen compounds from a vacuum gas oil obtained from an industrial atmospheric distillation unit. Two types of adsorbents were tested: a clay developed specifically for the removal of nitrogen compounds from middle distillates (jet fuel and diesel); and a silica used in a variety of industries. Kinetic and thermodynamic equilibrium experiments were conducted at three temperatures: 80, 100, and 120 °C. The variation in the concentration of nitrogen and aromatic compounds was monitored throughout the kinetic adsorption and thermodynamic equilibrium experiments. When an adsorbent/gas oil mass ratio of 0.75 was used, the clay removed around 70 % of the basic nitrogen compounds from the gas oil, while the silica removed 80 % of the same compounds, which are the ones that effectively hamper catalytic cracking. The silica also removed 14.2 % of the aromatic compounds, while the clay only removed 4.1 %. This study shows that it is possible to treat a viscous hydrocarbon feed using an adsorption process to remove nitrogen compounds without the need to dilute the feed. Using a fluidized bed advanced cracking evaluation (ACE) unit, which simulates a fluid catalytic cracking unit on a bench scale, the gas oil treated with silica produced 3 % more liquid petroleum gas (LPG) and 4 % more gasoline, while the gas oil treated with clay produced 2 % more LPG and 3 % more gasoline than the untreated gas oil.

show abstract

“…Its principal function is to convert high-molecular weight hydrocarbons obtained from crude oil distillation into more valuable products, mainly gasoline [12][13][14][15]. Its principal function is to convert high-molecular weight hydrocarbons obtained from crude oil distillation into more valuable products, mainly gasoline [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Fluid catalytic cracking (FCC) is a key process in a modern oil refinery because its flexibility makes it adapted to fluctuations in feedstock and product demands. Its principal function is to convert high-molecular weight hydrocarbons obtained from crude oil distillation into more valuable products, mainly gasoline [12][13][14][15]. Coprocessing vacuum gas oil (VGO), a standard fluid catalytic cracking feed, and hydrodeoxygenated pyrolysis oil (HDO-oil) lead to feedstocks that differ in terms of composition.…”

Section: Introductionmentioning

confidence: 99%

Analytical techniques tailored for biomass transformation to biofuels

Fogassy

Lorentz

Toussaint

et al. 2011

Env Prog and Sustain Energy

View full text Add to dashboard Cite

An analytical platform was developed for the detection of biomass oxygenates and biocarbon in biogasoline produced by coprocessing of hydrodeoxygenated pyrolysis oils (HDO‐oil) and vacuum gas oil. A combination of different analytical techniques is necessary for analyzing such complex mixtures. The presence of various oxygenated compounds such as alcohols, acids, and phenols was quantified using phosphorus nuclear magnetic resonance spectroscopy. Different alkylphenols were identified using two‐dimensional gas chromatography‐mass spectrometry. The transformations of lignin oligomers present in HDO‐oil were determined with size‐exclusion chromatography carried out for the products. Accelerator mass spectrometry was used to make the distinction between carbonaceous material of biological origin and that of fossil origin. This type of analytical platform, which is tailored for bio‐oil identification and quantification, appears to be required for exploratory catalyst research and kinetic studies in this rapidly expanding domain. © 2011 American Institute of Chemical Engineers Environ Prog, 32: 377‐383, 2013

show abstract

Simulation of Catalytic Cracking in a Fixed-Fluidized-Bed Unit

Cited by 30 publications

References 25 publications

Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils

Catalytic Cracking of Diverse Vacuum Residue Hydrocracking Gas Oils

Evaluation of the use of adsorbent materials in the removal of nitrogen compounds from gas oil as a pre‐treatment for feeds for fluid catalytic cracking units

Analytical techniques tailored for biomass transformation to biofuels

Contact Info

Product

Resources

About