A Fundamental Kinetic Model for the Catalytic Cracking of Alkanes on a USY Zeolite in the Presence of Coke Formation

2001 ◽  
Vol 40 (5) ◽  
pp. 1337-1347 ◽  
Author(s):  
Hans C. Beirnaert ◽  
John R. Alleman ◽  
Guy B. Marin
Keyword(s):  
Kinetic Model ◽  
Catalytic Cracking ◽  
Coke Formation ◽  
Usy Zeolite

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.

Five-Lump Kinetic Model for the Catalytic Cracking Process\

2018 ◽  
Vol 69 (10) ◽  
pp. 2633-2637
Author(s):  
Raluca Dragomir ◽  
Paul Rosca ◽  
Cristina Popa
Keyword(s):  
Kinetic Model ◽  
Programming Language ◽  
Catalytic Cracking ◽  
Computational Method ◽  
Industrial Data ◽  
New Model ◽  
Optimization And Control ◽  
Cracking Process ◽  
And Control ◽  
Matlab Programming

The main objectives of the present paper are to adaptation the five-kinetic model of the catalytic cracking process and simulation the riser to predicts the FCC products yields when one of the major input variable of the process is change. The simulation and adaptation are based on the industrial data from Romanian refinery. The adaptation is realize using a computational method from Optimization Toolbox from Matlab programming language. The new model can be used for optimization and control of FCC riser.

The Lumping Kinetic Model for the Heavy Oil Catalytic Cracking MIP Process

2010 ◽  
Vol 28 (17) ◽  
pp. 1778-1787 ◽  
Author(s):  
G. Zong ◽  
H. Ning ◽  
H. Jiang ◽  
F. Ouyang
Keyword(s):  
Kinetic Model ◽  
Heavy Oil ◽  
Catalytic Cracking

Single-Event MicroKinetics for coke formation in catalytic cracking

2005 ◽  
Vol 107-108 ◽  
pp. 619-629 ◽  
Author(s):  
Roberto Quintana-Solórzano ◽  
Joris W. Thybaut ◽  
Guy B. Marin ◽  
Rune Lødeng ◽  
Anders Holmen
Keyword(s):  
Catalytic Cracking ◽  
Coke Formation ◽  
Single Event

Modeling Fluid Catalytic Cracking in a Novel CREC Riser Simulator: Adsorption Parameters under Reaction Conditions

2003 ◽  
Vol 1 (1) ◽  
Author(s):  
Jesus A Atias ◽  
Gabriela M Tonetto ◽  
Hugo Ignacio de Lasa
Keyword(s):  
Catalytic Cracking ◽  
Batch Reactor ◽  
Fluid Catalytic Cracking ◽  
Zeolite Catalysts ◽  
Initial Reaction ◽  
Adsorption Parameters ◽  
Reaction Conditions ◽  
Reactor Unit ◽  
Usy Zeolite ◽  
Heats Of Adsorption

The complexity of a heavy gas oil feedstock and the multitude of reaction pathways have limited previous attempts to model fluid catalytic cracking (FCC). The demand for more detailed kinetic information motivates the use of pure components to first elucidate the dominant pathways and mechanisms and then determine the associated rate parameters, including adsorption constants and heats of adsorption. The aim of the present work is to evaluate adsorption constants and heats of adsorption, under FCC relevant reaction conditions. The experiments are carried out in a novel CREC Riser Simulator (batch reactor unit) using USY zeolite catalysts with different crystallite sizes (0.4 and 0.9 microns). This study confirms a special feature of the CREC Riser Simulator, as a valuable tool for the study of adsorption phenomena. Adsorption constants and heats of adsorption are evaluated for benzene, toluene, xylene and trimethylbenzene, at initial reaction conditions. Catalytic conversion experiments for 1,2,4-trimethylbenzene help to demonstrate the consistency of the determined adsorption parameters at various temperatures and reaction times. In addition, adsorption constants and heats of adsorption are found to be constant throughout the reaction time and the formation of coke does not hinder the adsorption of 1,2,4-TMB, although it significantly affects the reactivity of this model compound.

Stabilized hierarchical USY zeolite catalysts for simultaneous increase in diesel and LPG olefinicity during catalytic cracking

2013 ◽  
Vol 3 (4) ◽  
pp. 972 ◽  
Author(s):  
Cristina Martínez ◽  
Danny Verboekend ◽  
Javier Pérez-Ramírez ◽  
Avelino Corma
Keyword(s):  
Catalytic Cracking ◽  
Zeolite Catalysts ◽  
Simultaneous Increase ◽  
Usy Zeolite
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