scholarly journals Modeling and Simulation of Fluidized Catalytic Cracking Riser Reactor Using Pseudo Reaction Kinetics : A Review

2017 ◽  
Vol 9 (3) ◽  
pp. 1667-1681
Author(s):  
Yadav P.K ◽  
Rajeev Kumar Garg
Keyword(s):  
Modeling And Simulation ◽  
Reaction Kinetics ◽  
Catalytic Cracking ◽  
Fluidized Catalytic Cracking ◽  
Riser Reactor

An Investigation of Multicomponent Droplet Vaporization in Fluidized Catalytic Cracking Risers

2002 ◽  
Author(s):  
B. J. Bowman ◽  
C. Q. Zhou ◽  
S. L. Chang
Keyword(s):  
Catalytic Cracking ◽  
Fluid Dynamic ◽  
Oil Refining ◽  
Reacting Flow ◽  
Droplet Vaporization ◽  
Fluidized Catalytic Cracking ◽  
Low Profile ◽  
Riser Reactor ◽  
Riser Flows ◽  
Cracking Process

Fluidized Catalytic Cracking (FCC) oil refining technology converts heavy feed oil into lighter, more valuable components using hot catalysts in a riser reactor. The interphase mixing, vaporization, and chemical reactions are the controlling processes inside the FCC riser. The interactions between the feed oil spray and the gas/solid flow determine the final products of the cracking process, and ultimately the profitability of the FCC unit. A three-phase reacting flow computational fluid dynamic (CFD) code, ICRKFLO, has been developed for the simulation of FCC riser flows. In this study, ICRKFLO is used to simulate a low profile FCC riser. A low profile riser has a shorter residence time than standard FCC risers, and the modeling of the droplet vaporization process is of great importance. Because feed oil is composed of many hydrocarbon components, each of which vaporize at a different temperature, a new vaporization model is developed to include multicomponent vaporization of a droplet. The model allows the boiling point temperature of the droplets to vary as the vaporizing droplet loses mass to the gaseous phase. Comparison between the existing and new models shows a significant change in gasoline yields at the riser exit.

Modeling and Simulation of Transport Riser Reactor for Catalytic Cracking of Palm Oil for the Production of Biofuels

2007 ◽  
Vol 21 (6) ◽  
pp. 3076-3083 ◽  
Author(s):  
Subhash Bhatia ◽  
Chew Thiam Leng ◽  
Pramila Tamunaidu
Keyword(s):  
Modeling And Simulation ◽  
Palm Oil ◽  
Catalytic Cracking ◽  
Riser Reactor

Fluidized Catalytic Cracking Catalyst Microstructure as Determined by A Scanning Ion Microprobe

1990 ◽  
Vol 48 (2) ◽  
pp. 302-303
Author(s):  
J.K. Lampert ◽  
G.S. Koermer ◽  
J.M. Macaoy ◽  
J.M. Chabala ◽  
R. Levi-Setti
Keyword(s):  
Catalytic Cracking ◽  
Secondary Ion Mass Spectrometry ◽  
Fuel Oil ◽  
Ion Microprobe ◽  
Fluidized Catalytic Cracking ◽  
Ion Probe ◽  
Silica Alumina ◽  
Resolution Imaging ◽  
The University ◽  
High Spatial Resolution Imaging

We have used high spatial resolution imaging secondary ion mass spectrometry (SIMS) to differentiate mineralogical phases and to investigate chemical segregations in fluidized catalytic cracking (FCC) catalyst particles. The oil industry relies on heterogeneous catalysis using these catalysts to convert heavy hydrocarbon fractions into high quality gasoline and fuel oil components. Catalyst performance is strongly influenced by catalyst microstructure and composition, with different chemical reactions occurring at specific types of sites within the particle. The zeolitic portions of the particle, where the majority of the oil conversion occurs, can be clearly distinguished from the surrounding silica-alumina matrix in analytical SIMS images.The University of Chicago scanning ion microprobe (SIM) employed in this study has been described previously. For these analyses, the instrument was operated with a 40 keV, 10 pA Ga+ primary ion probe focused to a 30 nm FWHM spot. Elemental SIMS maps were obtained from 10×10 μm2 areas in times not exceeding 524s.

An analytical microscopic study of metals in fluidized catalytic cracking catalyst

1986 ◽  
Vol 44 ◽  
pp. 854-855
Author(s):  
Clifford S. Rainey
Keyword(s):  
Electron Microscopy ◽  
Spatial Distribution ◽  
Catalytic Cracking ◽  
Catalyst Deactivation ◽  
Coke Formation ◽  
Acid Sites ◽  
Y Zeolite ◽  
Fcc Catalyst ◽  
Fluidized Catalytic Cracking ◽  
High Regeneration

The spatial distribution of V and Ni deposited within fluidized catalytic cracking (FCC) catalyst is studied because these metals contribute to catalyst deactivation. Y zeolite in FCC microspheres are high SiO2 aluminosilicates with molecular-sized channels that contain a mixture of lanthanoids. They must withstand high regeneration temperatures and retain acid sites needed for cracking of hydrocarbons, a process essential for efficient gasoline production. Zeolite in combination with V to form vanadates, or less diffusion in the channels due to coke formation, may deactivate catalyst. Other factors such as metal "skins", microsphere sintering, and attrition may also be involved. SEM of FCC fracture surfaces, AEM of Y zeolite, and electron microscopy of this work are developed to better understand and minimize catalyst deactivation.

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